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1What: /sys/bus/iio/devices/iio:deviceX
2KernelVersion: 2.6.35
3Contact: linux-iio@vger.kernel.org
4Description:
5 Hardware chip or device accessed by one communication port.
6 Corresponds to a grouping of sensor channels. X is the IIO
7 index of the device.
8
9What: /sys/bus/iio/devices/triggerX
10KernelVersion: 2.6.35
11Contact: linux-iio@vger.kernel.org
12Description:
13 An event driven driver of data capture to an in kernel buffer.
14 May be provided by a device driver that also has an IIO device
15 based on hardware generated events (e.g. data ready) or
16 provided by a separate driver for other hardware (e.g.
17 periodic timer, GPIO or high resolution timer).
18
19 Contains trigger type specific elements. These do not
20 generalize well and hence are not documented in this file.
21 X is the IIO index of the trigger.
22
23What: /sys/bus/iio/devices/iio:deviceX/buffer
24KernelVersion: 2.6.35
25Contact: linux-iio@vger.kernel.org
26Description:
27 Directory of attributes relating to the buffer for the device.
28
29What: /sys/bus/iio/devices/iio:deviceX/name
30KernelVersion: 2.6.35
31Contact: linux-iio@vger.kernel.org
32Description:
33 Description of the physical chip / device for device X.
34 Typically a part number.
35
36What: /sys/bus/iio/devices/iio:deviceX/label
37KernelVersion: 5.8
38Contact: linux-iio@vger.kernel.org
39Description:
40 Optional symbolic label for a device.
41 This is useful for userspace to be able to better identify an
42 individual device.
43
44 The contents of the label are free-form, but there are some
45 standardized uses:
46
47 For proximity sensors which give the proximity (of a person) to
48 a certain wlan or wwan antenna the following standardized labels
49 are used:
50
51 * "proximity-wifi"
52 * "proximity-lte"
53 * "proximity-wifi-lte"
54 * "proximity-wifi-left"
55 * "proximity-wifi-right"
56
57 These are used to indicate to userspace that these proximity
58 sensors may be used to tune transmit power to ensure that
59 Specific Absorption Rate (SAR) limits are honored.
60 The "-left" and "-right" labels are for devices with multiple
61 antennas.
62
63 In some laptops/tablets the standardized proximity sensor labels
64 instead indicate proximity to a specific part of the device:
65
66 * "proximity-palmrest" indicates proximity to the keyboard's palmrest
67 * "proximity-palmrest-left" indicates proximity to the left part of the palmrest
68 * "proximity-palmrest-right" indicates proximity to the right part of the palmrest
69 * "proximity-lap" indicates the device is being used on someone's lap
70
71 Note "proximity-lap" is special in that its value may be
72 calculated by firmware from other sensor readings, rather then
73 being a raw sensor reading.
74
75 For accelerometers used in 2-in-1s with 360° (yoga-style) hinges,
76 which have an accelerometer in both their base and their display,
77 the following standardized labels are used:
78
79 * "accel-base"
80 * "accel-display"
81
82 For devices where an accelerometer is housed in the swivel camera subassembly
83 (for AR application), the following standardized label is used:
84
85 * "accel-camera"
86
87What: /sys/bus/iio/devices/iio:deviceX/current_timestamp_clock
88KernelVersion: 4.5
89Contact: linux-iio@vger.kernel.org
90Description:
91 String identifying current posix clock used to timestamp
92 buffered samples and events for device X.
93
94What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency
95What: /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency
96What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency
97What: /sys/bus/iio/devices/triggerX/sampling_frequency
98KernelVersion: 2.6.35
99Contact: linux-iio@vger.kernel.org
100Description:
101 Some devices have internal clocks. This parameter sets the
102 resulting sampling frequency. In many devices this
103 parameter has an effect on input filters etc. rather than
104 simply controlling when the input is sampled. As this
105 affects data ready triggers, hardware buffers and the sysfs
106 direct access interfaces, it may be found in any of the
107 relevant directories. If it affects all of the above
108 then it is to be found in the base device directory.
109
110 The stm32-timer-trigger has the additional characteristic that
111 a sampling_frequency of 0 is defined to stop sampling.
112
113What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
114What: /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency_available
115What: /sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available
116What: /sys/.../iio:deviceX/buffer/sampling_frequency_available
117What: /sys/bus/iio/devices/triggerX/sampling_frequency_available
118KernelVersion: 2.6.35
119Contact: linux-iio@vger.kernel.org
120Description:
121 When the internal sampling clock can only take a specific set of
122 frequencies, we can specify the available values with:
123
124 - a small discrete set of values like "0 2 4 6 8"
125 - a range with minimum, step and maximum frequencies like
126 "[min step max]"
127
128What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio
129KernelVersion: 2.6.38
130Contact: linux-iio@vger.kernel.org
131Description:
132 Hardware dependent ADC oversampling. Controls the sampling ratio
133 of the digital filter if available.
134
135What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio_available
136KernelVersion: 2.6.38
137Contact: linux-iio@vger.kernel.org
138Description:
139 Hardware dependent values supported by the oversampling filter.
140
141What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw
142What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw
143What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_raw
144What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_raw
145KernelVersion: 2.6.35
146Contact: linux-iio@vger.kernel.org
147Description:
148 Raw (unscaled no bias removal etc.) voltage measurement from
149 channel Y. In special cases where the channel does not
150 correspond to externally available input one of the named
151 versions may be used. The number must always be specified and
152 unique to allow association with event codes. Units after
153 application of scale and offset are millivolts.
154
155 Channels with 'i' and 'q' modifiers always exist in pairs and both
156 channels refer to the same signal. The 'i' channel contains the in-phase
157 component of the signal while the 'q' channel contains the quadrature
158 component.
159
160What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw
161KernelVersion: 2.6.35
162Contact: linux-iio@vger.kernel.org
163Description:
164 Raw (unscaled) differential voltage measurement equivalent to
165 channel Y - channel Z where these channel numbers apply to the
166 physically equivalent inputs when non differential readings are
167 separately available. In differential only parts, then all that
168 is required is a consistent labeling. Units after application
169 of scale and offset are millivolts.
170
171What: /sys/bus/iio/devices/iio:deviceX/in_currentY_raw
172What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw
173KernelVersion: 3.17
174Contact: linux-iio@vger.kernel.org
175Description:
176 Raw (unscaled no bias removal etc.) current measurement from
177 channel Y. In special cases where the channel does not
178 correspond to externally available input one of the named
179 versions may be used. The number must always be specified and
180 unique to allow association with event codes. Units after
181 application of scale and offset are milliamps.
182
183What: /sys/bus/iio/devices/iio:deviceX/in_powerY_raw
184KernelVersion: 4.5
185Contact: linux-iio@vger.kernel.org
186Description:
187 Raw (unscaled no bias removal etc.) power measurement from
188 channel Y. The number must always be specified and
189 unique to allow association with event codes. Units after
190 application of scale and offset are milliwatts.
191
192What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw
193KernelVersion: 3.2
194Contact: linux-iio@vger.kernel.org
195Description:
196 Raw capacitance measurement from channel Y. Units after
197 application of scale and offset are nanofarads.
198
199What: /sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_raw
200KernelVersion: 3.2
201Contact: linux-iio@vger.kernel.org
202Description:
203 Raw differential capacitance measurement equivalent to
204 channel Y - channel Z where these channel numbers apply to the
205 physically equivalent inputs when non differential readings are
206 separately available. In differential only parts, then all that
207 is required is a consistent labeling. Units after application
208 of scale and offset are nanofarads.
209
210What: /sys/.../iio:deviceX/in_capacitanceY-capacitanceZ_zeropoint
211KernelVersion: 6.1
212Contact: linux-iio@vger.kernel.org
213Description:
214 For differential channels, this an offset that is applied
215 equally to both inputs. As the reading is of the difference
216 between the two inputs, this should not be applied to the _raw
217 reading by userspace (unlike _offset) and unlike calibbias
218 it does not affect the differential value measured because
219 the effect of _zeropoint cancels out across the two inputs
220 that make up the differential pair. It's purpose is to bring
221 the individual signals, before the differential is measured,
222 within the measurement range of the device. The naming is
223 chosen because if the separate inputs that make the
224 differential pair are drawn on a graph in their
225 _raw units, this is the value that the zero point on the
226 measurement axis represents. It is expressed with the
227 same scaling as _raw.
228
229What: /sys/bus/iio/devices/iio:deviceX/in_temp_raw
230What: /sys/bus/iio/devices/iio:deviceX/in_tempX_raw
231What: /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw
232What: /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw
233What: /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw
234What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw
235KernelVersion: 2.6.35
236Contact: linux-iio@vger.kernel.org
237Description:
238 Raw (unscaled no bias removal etc.) temperature measurement.
239 If an axis is specified it generally means that the temperature
240 sensor is associated with one part of a compound device (e.g.
241 a gyroscope axis). The ambient and object modifiers distinguish
242 between ambient (reference) and distant temperature for contact-
243 less measurements. Units after application of scale and offset
244 are milli degrees Celsius.
245
246What: /sys/bus/iio/devices/iio:deviceX/in_tempX_input
247KernelVersion: 2.6.38
248Contact: linux-iio@vger.kernel.org
249Description:
250 Scaled temperature measurement in milli degrees Celsius.
251
252What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw
253What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw
254What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw
255KernelVersion: 2.6.35
256Contact: linux-iio@vger.kernel.org
257Description:
258 Acceleration in direction x, y or z (may be arbitrarily assigned
259 but should match other such assignments on device).
260 Has all of the equivalent parameters as per voltageY. Units
261 after application of scale and offset are m/s^2.
262
263What: /sys/bus/iio/devices/iio:deviceX/in_accel_linear_x_raw
264What: /sys/bus/iio/devices/iio:deviceX/in_accel_linear_y_raw
265What: /sys/bus/iio/devices/iio:deviceX/in_accel_linear_z_raw
266KernelVersion: 6.1
267Contact: linux-iio@vger.kernel.org
268Description:
269 As per in_accel_X_raw attributes, but minus the
270 acceleration due to gravity.
271
272What: /sys/bus/iio/devices/iio:deviceX/in_gravity_x_raw
273What: /sys/bus/iio/devices/iio:deviceX/in_gravity_y_raw
274What: /sys/bus/iio/devices/iio:deviceX/in_gravity_z_raw
275KernelVersion: 4.11
276Contact: linux-iio@vger.kernel.org
277Description:
278 Gravity in direction x, y or z (may be arbitrarily assigned
279 but should match other such assignments on device).
280 Units after application of scale and offset are m/s^2.
281
282What: /sys/bus/iio/devices/iio:deviceX/in_angl_raw
283What: /sys/bus/iio/devices/iio:deviceX/in_anglY_raw
284KernelVersion: 4.17
285Contact: linux-iio@vger.kernel.org
286Description:
287 Angle of rotation. Units after application of scale and offset
288 are radians.
289
290What: /sys/bus/iio/devices/iio:deviceX/in_positionrelative_x_raw
291What: /sys/bus/iio/devices/iio:deviceX/in_positionrelative_y_raw
292KernelVersion: 4.19
293Contact: linux-iio@vger.kernel.org
294Description:
295 Relative position in direction x or y on a pad (may be
296 arbitrarily assigned but should match other such assignments on
297 device).
298 Units after application of scale and offset are milli percents
299 from the pad's size in both directions. Should be calibrated by
300 the consumer.
301
302What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
303What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
304What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw
305KernelVersion: 2.6.35
306Contact: linux-iio@vger.kernel.org
307Description:
308 Angular velocity about axis x, y or z (may be arbitrarily
309 assigned). Has all the equivalent parameters as per voltageY.
310 Units after application of scale and offset are radians per
311 second.
312
313What: /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw
314What: /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw
315What: /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw
316KernelVersion: 2.6.35
317Contact: linux-iio@vger.kernel.org
318Description:
319 Inclination raw reading about axis x, y or z (may be
320 arbitrarily assigned). Data converted by application of offset
321 and scale to degrees.
322
323What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw
324What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw
325What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw
326KernelVersion: 2.6.35
327Contact: linux-iio@vger.kernel.org
328Description:
329 Magnetic field along axis x, y or z (may be arbitrarily
330 assigned). Data converted by application of offset
331 then scale to Gauss.
332
333What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw
334What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw
335What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw
336KernelVersion: 2.6.36
337Contact: linux-iio@vger.kernel.org
338Description:
339 Highest value since some reset condition. These
340 attributes allow access to this and are otherwise
341 the direct equivalent of the <type>Y[_name]_raw attributes.
342
343What: /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw
344KernelVersion: 2.6.36
345Contact: linux-iio@vger.kernel.org
346Description:
347 A computed peak value based on the sum squared magnitude of
348 the underlying value in the specified directions.
349
350What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw
351What: /sys/bus/iio/devices/iio:deviceX/in_pressure_raw
352KernelVersion: 3.8
353Contact: linux-iio@vger.kernel.org
354Description:
355 Raw pressure measurement from channel Y. Units after
356 application of scale and offset are kilopascal.
357
358What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_input
359What: /sys/bus/iio/devices/iio:deviceX/in_pressure_input
360KernelVersion: 3.8
361Contact: linux-iio@vger.kernel.org
362Description:
363 Scaled pressure measurement from channel Y, in kilopascal.
364
365What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw
366KernelVersion: 3.14
367Contact: linux-iio@vger.kernel.org
368Description:
369 Raw humidity measurement of air. Units after application of
370 scale and offset are milli percent.
371
372What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input
373KernelVersion: 3.14
374Contact: linux-iio@vger.kernel.org
375Description:
376 Scaled humidity measurement in milli percent.
377
378What: /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw
379KernelVersion: 3.5
380Contact: linux-iio@vger.kernel.org
381Description:
382 Averaged raw measurement from channel X. The number of values
383 used for averaging is device specific. The converting rules for
384 normal raw values also applies to the averaged raw values.
385
386What: /sys/bus/iio/devices/iio:deviceX/in_accel_offset
387What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
388What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
389What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
390What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
391What: /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
392What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset
393What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset
394What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_offset
395What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_offset
396What: /sys/bus/iio/devices/iio:deviceX/in_currentY_offset
397What: /sys/bus/iio/devices/iio:deviceX/in_current_offset
398What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_offset
399What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_offset
400What: /sys/bus/iio/devices/iio:deviceX/in_current_q_offset
401What: /sys/bus/iio/devices/iio:deviceX/in_current_i_offset
402What: /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
403What: /sys/bus/iio/devices/iio:deviceX/in_temp_offset
404What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
405What: /sys/bus/iio/devices/iio:deviceX/in_pressure_offset
406What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
407What: /sys/bus/iio/devices/iio:deviceX/in_magn_offset
408What: /sys/bus/iio/devices/iio:deviceX/in_rot_offset
409What: /sys/bus/iio/devices/iio:deviceX/in_angl_offset
410What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceX_offset
411KernelVersion: 2.6.35
412Contact: linux-iio@vger.kernel.org
413Description:
414 If known for a device, offset to be added to <type>[Y]_raw prior
415 to scaling by <type>[Y]_scale in order to obtain value in the
416 <type> units as specified in <type>[Y]_raw documentation.
417 Not present if the offset is always 0 or unknown. If Y or
418 axis <x|y|z> is not present, then the offset applies to all
419 in channels of <type>.
420 May be writable if a variable offset can be applied on the
421 device. Note that this is different to calibbias which
422 is for devices (or drivers) that apply offsets to compensate
423 for variation between different instances of the part, typically
424 adjusted by using some hardware supported calibration procedure.
425 Calibbias is applied internally, offset is applied in userspace
426 to the _raw output.
427
428What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
429What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_scale
430What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale
431What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
432What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
433What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_scale
434What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_scale
435What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
436What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
437What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
438What: /sys/bus/iio/devices/iio:deviceX/in_currentY_scale
439What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale
440What: /sys/bus/iio/devices/iio:deviceX/in_current_scale
441What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_scale
442What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_scale
443What: /sys/bus/iio/devices/iio:deviceX/in_current_i_scale
444What: /sys/bus/iio/devices/iio:deviceX/in_current_q_scale
445What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale
446What: /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
447What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
448What: /sys/bus/iio/devices/iio:deviceX/in_energy_scale
449What: /sys/bus/iio/devices/iio:deviceX/in_distance_scale
450What: /sys/bus/iio/devices/iio:deviceX/in_magn_scale
451What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
452What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
453What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale
454What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale
455What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale
456What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale
457What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale
458What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
459What: /sys/bus/iio/devices/iio:deviceX/in_pressure_scale
460What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
461What: /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
462What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
463What: /sys/bus/iio/devices/iio:deviceX/in_countY_scale
464What: /sys/bus/iio/devices/iio:deviceX/in_angl_scale
465What: /sys/bus/iio/devices/iio:deviceX/in_intensity_x_scale
466What: /sys/bus/iio/devices/iio:deviceX/in_intensity_y_scale
467What: /sys/bus/iio/devices/iio:deviceX/in_intensity_z_scale
468What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_scale
469KernelVersion: 2.6.35
470Contact: linux-iio@vger.kernel.org
471Description:
472 If known for a device, scale to be applied to <type>Y[_name]_raw
473 post addition of <type>[Y][_name]_offset in order to obtain the
474 measured value in <type> units as specified in
475 <type>[Y][_name]_raw documentation. If shared across all in
476 channels then Y and <x|y|z> are not present and the value is
477 called <type>[Y][_name]_scale. The peak modifier means this
478 value is applied to <type>Y[_name]_peak_raw values.
479
480What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
481What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
482What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
483What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
484What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
485What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
486What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
487What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
488What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
489What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
490KernelVersion: 2.6.35
491Contact: linux-iio@vger.kernel.org
492Description:
493 Hardware applied calibration offset (assumed to fix production
494 inaccuracies).
495 icm42600: For this device values are real physical offsets
496 expressed in SI units (m/s^2 for accelerometers and rad/s
497 for gyroscope)/
498
499What: /sys/bus/iio/devices/iio:deviceX/in_accel_calibbias_available
500What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_calibbias_available
501KernelVersion: 5.8
502Contact: linux-iio@vger.kernel.org
503Description:
504 Available values of calibbias. Maybe expressed as either of:
505
506 - a small discrete set of values like "0 2 4 6 8"
507 - a range specified as "[min step max]"
508
509What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
510What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
511What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale
512What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale
513What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale
514What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale
515What: /sys/bus/iio/devices/iio:deviceX/in_altvoltage_calibscale
516What: /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
517What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
518What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
519What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
520What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
521What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
522What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
523What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
524What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
525What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
526What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
527What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale
528KernelVersion: 2.6.35
529Contact: linux-iio@vger.kernel.org
530Description:
531 Hardware applied calibration scale factor (assumed to fix
532 production inaccuracies). If shared across all channels,
533 <type>_calibscale is used.
534
535What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender
536What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender
537What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender
538What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender
539KernelVersion: 4.0
540Contact: linux-iio@vger.kernel.org
541Description:
542 Gender of the user (e.g.: male, female) used by some pedometers
543 to compute the stride length, distance, speed and activity
544 type.
545
546What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available
547What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available
548What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available
549What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available
550KernelVersion: 4.0
551Contact: linux-iio@vger.kernel.org
552Description:
553 Lists all available gender values (e.g.: male, female).
554
555What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibheight
556What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibheight
557What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibheight
558What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight
559KernelVersion: 3.19
560Contact: linux-iio@vger.kernel.org
561Description:
562 Height of the user (in meters) used by some pedometers
563 to compute the stride length, distance, speed and activity
564 type.
565
566What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight
567KernelVersion: 4.0
568Contact: linux-iio@vger.kernel.org
569Description:
570 Weight of the user (in kg). It is needed by some pedometers
571 to compute the calories burnt by the user.
572
573What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
574What: /sys/.../iio:deviceX/in_anglvel_scale_available
575What: /sys/.../iio:deviceX/in_magn_scale_available
576What: /sys/.../iio:deviceX/in_illuminance_scale_available
577What: /sys/.../iio:deviceX/in_intensity_scale_available
578What: /sys/.../iio:deviceX/in_proximity_scale_available
579What: /sys/.../iio:deviceX/in_voltageX_scale_available
580What: /sys/.../iio:deviceX/in_voltage-voltage_scale_available
581What: /sys/.../iio:deviceX/out_voltageX_scale_available
582What: /sys/.../iio:deviceX/out_altvoltageX_scale_available
583What: /sys/.../iio:deviceX/in_capacitance_scale_available
584What: /sys/.../iio:deviceX/in_pressure_scale_available
585What: /sys/.../iio:deviceX/in_pressureY_scale_available
586KernelVersion: 2.6.35
587Contact: linux-iio@vger.kernel.org
588Description:
589 If a discrete set of scale values is available, they
590 are listed in this attribute.
591
592What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
593What: /sys/bus/iio/devices/iio:deviceX/in_intensity_hardwaregain
594What: /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
595What: /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
596What: /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
597What: /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
598KernelVersion: 2.6.35
599Contact: linux-iio@vger.kernel.org
600Description:
601 Hardware applied gain factor. If shared across all channels,
602 <type>_hardwaregain is used.
603
604What: /sys/bus/iio/devices/iio:deviceX/in_intensity_hardwaregain_available
605KernelVersion: 5.10
606Contact: linux-iio@vger.kernel.org
607Description:
608 Lists all available hardware applied gain factors. Shared across all
609 channels.
610
611What: /sys/.../in_accel_filter_low_pass_3db_frequency
612What: /sys/.../in_magn_filter_low_pass_3db_frequency
613What: /sys/.../in_anglvel_filter_low_pass_3db_frequency
614KernelVersion: 3.2
615Contact: linux-iio@vger.kernel.org
616Description:
617 If a known or controllable low pass filter is applied
618 to the underlying data channel, then this parameter
619 gives the 3dB frequency of the filter in Hz.
620
621What: /sys/.../in_accel_filter_high_pass_3db_frequency
622What: /sys/.../in_anglvel_filter_high_pass_3db_frequency
623What: /sys/.../in_magn_filter_high_pass_3db_frequency
624KernelVersion: 4.2
625Contact: linux-iio@vger.kernel.org
626Description:
627 If a known or controllable high pass filter is applied
628 to the underlying data channel, then this parameter
629 gives the 3dB frequency of the filter in Hz.
630
631What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw
632What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw
633KernelVersion: 2.6.37
634Contact: linux-iio@vger.kernel.org
635Description:
636 Raw (unscaled, no bias etc.) output voltage for
637 channel Y. The number must always be specified and
638 unique if the output corresponds to a single channel.
639 While DAC like devices typically use out_voltage,
640 a continuous frequency generating device, such as
641 a DDS or PLL should use out_altvoltage.
642
643What: /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw
644What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw
645KernelVersion: 2.6.37
646Contact: linux-iio@vger.kernel.org
647Description:
648 Raw (unscaled, no bias etc.) output voltage for an aggregate of
649 channel Y, channel Z, etc. This interface is available in cases
650 where a single output sets the value for multiple channels
651 simultaneously.
652
653What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode
654What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode
655What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode
656What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode
657KernelVersion: 2.6.38
658Contact: linux-iio@vger.kernel.org
659Description:
660 Specifies the output powerdown mode.
661 DAC output stage is disconnected from the amplifier and
662 1kohm_to_gnd: connected to ground via an 1kOhm resistor,
663 2.5kohm_to_gnd: connected to ground via a 2.5kOhm resistor,
664 6kohm_to_gnd: connected to ground via a 6kOhm resistor,
665 20kohm_to_gnd: connected to ground via a 20kOhm resistor,
666 90kohm_to_gnd: connected to ground via a 90kOhm resistor,
667 100kohm_to_gnd: connected to ground via an 100kOhm resistor,
668 125kohm_to_gnd: connected to ground via an 125kOhm resistor,
669 500kohm_to_gnd: connected to ground via a 500kOhm resistor,
670 640kohm_to_gnd: connected to ground via a 640kOhm resistor,
671 three_state: left floating.
672 For a list of available output power down options read
673 outX_powerdown_mode_available. If Y is not present the
674 mode is shared across all outputs.
675
676What: /sys/.../iio:deviceX/out_voltageY_powerdown_mode_available
677What: /sys/.../iio:deviceX/out_voltage_powerdown_mode_available
678What: /sys/.../iio:deviceX/out_altvoltageY_powerdown_mode_available
679What: /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available
680KernelVersion: 2.6.38
681Contact: linux-iio@vger.kernel.org
682Description:
683 Lists all available output power down modes.
684 If Y is not present the mode is shared across all outputs.
685
686What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown
687What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown
688What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown
689What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown
690KernelVersion: 2.6.38
691Contact: linux-iio@vger.kernel.org
692Description:
693 Writing 1 causes output Y to enter the power down mode specified
694 by the corresponding outY_powerdown_mode. DAC output stage is
695 disconnected from the amplifier. Clearing returns to normal
696 operation. Y may be suppressed if all outputs are controlled
697 together.
698
699What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency
700KernelVersion: 3.4.0
701Contact: linux-iio@vger.kernel.org
702Description:
703 Output frequency for channel Y in Hz. The number must always be
704 specified and unique if the output corresponds to a single
705 channel.
706 Some drivers have additional constraints:
707 ADF4371 has an integrated VCO with fundamendal output
708 frequency ranging from 4000000000 Hz 8000000000 Hz.
709
710 out_altvoltage0_frequency:
711 A divide by 1, 2, 4, 8, 16, 32 or circuit generates
712 frequencies from 62500000 Hz to 8000000000 Hz.
713 out_altvoltage1_frequency:
714 This channel duplicates the channel 0 frequency
715 out_altvoltage2_frequency:
716 A frequency doubler generates frequencies from
717 8000000000 Hz to 16000000000 Hz.
718 out_altvoltage3_frequency:
719 A frequency quadrupler generates frequencies from
720 16000000000 Hz to 32000000000 Hz.
721
722 Note: writes to one of the channels will affect the frequency of
723 all the other channels, since it involves changing the VCO
724 fundamental output frequency.
725
726What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase
727KernelVersion: 3.4.0
728Contact: linux-iio@vger.kernel.org
729Description:
730 Phase in radians of one frequency/clock output Y
731 (out_altvoltageY) relative to another frequency/clock output
732 (out_altvoltageZ) of the device X. The number must always be
733 specified and unique if the output corresponds to a single
734 channel.
735
736What: /sys/bus/iio/devices/iio:deviceX/out_currentY_raw
737Date: May 2012
738KernelVersion: 3.5
739Contact: Johan Hovold <jhovold@gmail.com>
740Description:
741 Set/get output current for channel Y. Units after application
742 of scale and offset are milliamps.
743 For some devices current channels are used to specify
744 current supplied to elements used in taking a measurement
745 of a different type. E.g. LED currents.
746
747What: /sys/bus/iio/devices/iio:deviceX/events
748KernelVersion: 2.6.35
749Contact: linux-iio@vger.kernel.org
750Description:
751 Configuration of which hardware generated events are passed up
752 to user-space.
753
754What: /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en
755What: /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en
756What: /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en
757What: /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en
758What: /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en
759What: /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en
760What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en
761What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en
762What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en
763What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en
764What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en
765What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en
766What: /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en
767What: /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en
768What: /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en
769What: /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en
770What: /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en
771What: /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en
772What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en
773What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en
774What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en
775What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en
776What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en
777What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en
778What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en
779What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en
780What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en
781What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en
782What: /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en
783What: /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en
784What: /sys/.../iio:deviceX/events/in_voltageY_thresh_either_en
785What: /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
786What: /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
787What: /sys/.../iio:deviceX/events/in_capacitanceY_thresh_rising_en
788What: /sys/.../iio:deviceX/events/in_capacitanceY_thresh_falling_en
789KernelVersion: 2.6.37
790Contact: linux-iio@vger.kernel.org
791Description:
792 Event generated when channel passes a threshold in the specified
793 (_rising|_falling) direction. If the direction is not specified,
794 then either the device will report an event which ever direction
795 a single threshold value is passed in (e.g.
796 <type>[Y][_name]_<raw|input>_thresh_value) or
797 <type>[Y][_name]_<raw|input>_thresh_rising_value and
798 <type>[Y][_name]_<raw|input>_thresh_falling_value may take
799 different values, but the device can only enable both thresholds
800 or neither.
801
802 Note the driver will assume the last p events requested are
803 to be enabled where p is how many it supports (which may vary
804 depending on the exact set requested. So if you want to be
805 sure you have set what you think you have, check the contents of
806 these attributes after everything is configured. Drivers may
807 have to buffer any parameters so that they are consistent when
808 a given event type is enabled at a future point (and not those for
809 whatever event was previously enabled).
810
811What: /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en
812What: /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en
813What: /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en
814What: /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en
815What: /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en
816What: /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en
817What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en
818What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en
819What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en
820What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en
821What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en
822What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en
823What: /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en
824What: /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en
825What: /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en
826What: /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en
827What: /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en
828What: /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en
829What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en
830What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en
831What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en
832What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en
833What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en
834What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en
835What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en
836What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en
837What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en
838What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en
839What: /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en
840What: /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en
841What: /sys/.../iio:deviceX/events/in_tempY_roc_rising_en
842What: /sys/.../iio:deviceX/events/in_tempY_roc_falling_en
843KernelVersion: 2.6.37
844Contact: linux-iio@vger.kernel.org
845Description:
846 Event generated when channel passes a threshold on the rate of
847 change (1st differential) in the specified (_rising|_falling)
848 direction. If the direction is not specified, then either the
849 device will report an event which ever direction a single
850 threshold value is passed in (e.g.
851 <type>[Y][_name]_<raw|input>_roc_value) or
852 <type>[Y][_name]_<raw|input>_roc_rising_value and
853 <type>[Y][_name]_<raw|input>_roc_falling_value may take
854 different values, but the device can only enable both rate of
855 change thresholds or neither.
856
857 Note the driver will assume the last p events requested are
858 to be enabled where p is however many it supports (which may
859 vary depending on the exact set requested. So if you want to be
860 sure you have set what you think you have, check the contents of
861 these attributes after everything is configured. Drivers may
862 have to buffer any parameters so that they are consistent when
863 a given event type is enabled a future point (and not those for
864 whatever event was previously enabled).
865
866What: /sys/.../events/in_capacitanceY_adaptive_thresh_rising_en
867What: /sys/.../events/in_capacitanceY_adaptive_thresh_falling_en
868KernelVersion: 5.13
869Contact: linux-iio@vger.kernel.org
870Description:
871 Adaptive thresholds are similar to normal fixed thresholds
872 but the value is expressed as an offset from a value which
873 provides a low frequency approximation of the channel itself.
874 Thus these detect if a rapid change occurs in the specified
875 direction which crosses tracking value + offset.
876 Tracking value calculation is devices specific.
877
878What: /sys/.../in_capacitanceY_adaptive_thresh_rising_timeout
879What: /sys/.../in_capacitanceY_adaptive_thresh_falling_timeout
880KernelVersion: 5.11
881Contact: linux-iio@vger.kernel.org
882Description:
883 When adaptive thresholds are used, the tracking signal
884 may adjust too slowly to step changes in the raw signal.
885 Thus these specify the time in seconds for which the
886 difference between the slow tracking signal and the raw
887 signal is allowed to remain out-of-range before a reset
888 event occurs in which the tracking signal is made equal
889 to the raw signal, allowing slow tracking to resume and the
890 adaptive threshold event detection to function as expected.
891
892What: /sys/.../events/in_accel_thresh_rising_value
893What: /sys/.../events/in_accel_thresh_falling_value
894What: /sys/.../events/in_accel_x_raw_thresh_rising_value
895What: /sys/.../events/in_accel_x_raw_thresh_falling_value
896What: /sys/.../events/in_accel_y_raw_thresh_rising_value
897What: /sys/.../events/in_accel_y_raw_thresh_falling_value
898What: /sys/.../events/in_accel_z_raw_thresh_rising_value
899What: /sys/.../events/in_accel_z_raw_thresh_falling_value
900What: /sys/.../events/in_anglvel_x_raw_thresh_rising_value
901What: /sys/.../events/in_anglvel_x_raw_thresh_falling_value
902What: /sys/.../events/in_anglvel_y_raw_thresh_rising_value
903What: /sys/.../events/in_anglvel_y_raw_thresh_falling_value
904What: /sys/.../events/in_anglvel_z_raw_thresh_rising_value
905What: /sys/.../events/in_anglvel_z_raw_thresh_falling_value
906What: /sys/.../events/in_magn_x_raw_thresh_rising_value
907What: /sys/.../events/in_magn_x_raw_thresh_falling_value
908What: /sys/.../events/in_magn_y_raw_thresh_rising_value
909What: /sys/.../events/in_magn_y_raw_thresh_falling_value
910What: /sys/.../events/in_magn_z_raw_thresh_rising_value
911What: /sys/.../events/in_magn_z_raw_thresh_falling_value
912What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value
913What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value
914What: /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value
915What: /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value
916What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value
917What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value
918What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value
919What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value
920What: /sys/.../events/in_voltageY_supply_raw_thresh_rising_value
921What: /sys/.../events/in_voltageY_supply_raw_thresh_falling_value
922What: /sys/.../events/in_voltageY_raw_thresh_rising_value
923What: /sys/.../events/in_voltageY_raw_thresh_falling_value
924What: /sys/.../events/in_tempY_raw_thresh_rising_value
925What: /sys/.../events/in_tempY_raw_thresh_falling_value
926What: /sys/.../events/in_illuminance0_thresh_falling_value
927What: /sys/.../events/in_illuminance0_thresh_rising_value
928What: /sys/.../events/in_proximity0_thresh_falling_value
929What: /sys/.../events/in_proximity0_thresh_rising_value
930What: /sys/.../events/in_illuminance_thresh_rising_value
931What: /sys/.../events/in_illuminance_thresh_falling_value
932What: /sys/.../events/in_capacitanceY_thresh_rising_value
933What: /sys/.../events/in_capacitanceY_thresh_falling_value
934What: /sys/.../events/in_capacitanceY_thresh_adaptive_rising_value
935What: /sys/.../events/in_capacitanceY_thresh_falling_rising_value
936KernelVersion: 2.6.37
937Contact: linux-iio@vger.kernel.org
938Description:
939 Specifies the value of threshold that the device is comparing
940 against for the events enabled by
941 <type>Y[_name]_thresh[_rising|falling]_en.
942
943 If separate attributes exist for the two directions, but
944 direction is not specified for this attribute, then a single
945 threshold value applies to both directions.
946
947 The raw or input element of the name indicates whether the
948 value is in raw device units or in processed units (as _raw
949 and _input do on sysfs direct channel read attributes).
950
951What: /sys/.../events/in_accel_scale
952What: /sys/.../events/in_accel_peak_scale
953What: /sys/.../events/in_anglvel_scale
954What: /sys/.../events/in_magn_scale
955What: /sys/.../events/in_rot_from_north_magnetic_scale
956What: /sys/.../events/in_rot_from_north_true_scale
957What: /sys/.../events/in_voltage_scale
958What: /sys/.../events/in_voltage_supply_scale
959What: /sys/.../events/in_temp_scale
960What: /sys/.../events/in_illuminance_scale
961What: /sys/.../events/in_proximity_scale
962KernelVersion: 3.21
963Contact: linux-iio@vger.kernel.org
964Description:
965 Specifies the conversion factor from the standard units
966 to device specific units used to set the event trigger
967 threshold.
968
969What: /sys/.../events/in_accel_x_thresh_rising_hysteresis
970What: /sys/.../events/in_accel_x_thresh_falling_hysteresis
971What: /sys/.../events/in_accel_x_thresh_either_hysteresis
972What: /sys/.../events/in_accel_y_thresh_rising_hysteresis
973What: /sys/.../events/in_accel_y_thresh_falling_hysteresis
974What: /sys/.../events/in_accel_y_thresh_either_hysteresis
975What: /sys/.../events/in_accel_z_thresh_rising_hysteresis
976What: /sys/.../events/in_accel_z_thresh_falling_hysteresis
977What: /sys/.../events/in_accel_z_thresh_either_hysteresis
978What: /sys/.../events/in_anglvel_x_thresh_rising_hysteresis
979What: /sys/.../events/in_anglvel_x_thresh_falling_hysteresis
980What: /sys/.../events/in_anglvel_x_thresh_either_hysteresis
981What: /sys/.../events/in_anglvel_y_thresh_rising_hysteresis
982What: /sys/.../events/in_anglvel_y_thresh_falling_hysteresis
983What: /sys/.../events/in_anglvel_y_thresh_either_hysteresis
984What: /sys/.../events/in_anglvel_z_thresh_rising_hysteresis
985What: /sys/.../events/in_anglvel_z_thresh_falling_hysteresis
986What: /sys/.../events/in_anglvel_z_thresh_either_hysteresis
987What: /sys/.../events/in_magn_x_thresh_rising_hysteresis
988What: /sys/.../events/in_magn_x_thresh_falling_hysteresis
989What: /sys/.../events/in_magn_x_thresh_either_hysteresis
990What: /sys/.../events/in_magn_y_thresh_rising_hysteresis
991What: /sys/.../events/in_magn_y_thresh_falling_hysteresis
992What: /sys/.../events/in_magn_y_thresh_either_hysteresis
993What: /sys/.../events/in_magn_z_thresh_rising_hysteresis
994What: /sys/.../events/in_magn_z_thresh_falling_hysteresis
995What: /sys/.../events/in_magn_z_thresh_either_hysteresis
996What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis
997What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis
998What: /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis
999What: /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis
1000What: /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis
1001What: /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis
1002What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis
1003What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis
1004What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis
1005What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis
1006What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis
1007What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis
1008What: /sys/.../events/in_voltageY_thresh_rising_hysteresis
1009What: /sys/.../events/in_voltageY_thresh_falling_hysteresis
1010What: /sys/.../events/in_voltageY_thresh_either_hysteresis
1011What: /sys/.../events/in_tempY_thresh_rising_hysteresis
1012What: /sys/.../events/in_tempY_thresh_falling_hysteresis
1013What: /sys/.../events/in_tempY_thresh_either_hysteresis
1014What: /sys/.../events/in_illuminance0_thresh_falling_hysteresis
1015What: /sys/.../events/in_illuminance0_thresh_rising_hysteresis
1016What: /sys/.../events/in_illuminance0_thresh_either_hysteresis
1017What: /sys/.../events/in_proximity0_thresh_falling_hysteresis
1018What: /sys/.../events/in_proximity0_thresh_rising_hysteresis
1019What: /sys/.../events/in_proximity0_thresh_either_hysteresis
1020KernelVersion: 3.13
1021Contact: linux-iio@vger.kernel.org
1022Description:
1023 Specifies the hysteresis of threshold that the device is comparing
1024 against for the events enabled by
1025 <type>Y[_name]_thresh[_(rising|falling)]_hysteresis.
1026 If separate attributes exist for the two directions, but
1027 direction is not specified for this attribute, then a single
1028 hysteresis value applies to both directions.
1029
1030 For falling events the hysteresis is added to the _value attribute for
1031 this event to get the upper threshold for when the event goes back to
1032 normal, for rising events the hysteresis is subtracted from the _value
1033 attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200
1034 and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event
1035 will get activated once in_voltage0_raw goes above 1200 and will become
1036 deactivated again once the value falls below 1150.
1037
1038What: /sys/.../events/in_accel_x_raw_roc_rising_value
1039What: /sys/.../events/in_accel_x_raw_roc_falling_value
1040What: /sys/.../events/in_accel_y_raw_roc_rising_value
1041What: /sys/.../events/in_accel_y_raw_roc_falling_value
1042What: /sys/.../events/in_accel_z_raw_roc_rising_value
1043What: /sys/.../events/in_accel_z_raw_roc_falling_value
1044What: /sys/.../events/in_anglvel_x_raw_roc_rising_value
1045What: /sys/.../events/in_anglvel_x_raw_roc_falling_value
1046What: /sys/.../events/in_anglvel_y_raw_roc_rising_value
1047What: /sys/.../events/in_anglvel_y_raw_roc_falling_value
1048What: /sys/.../events/in_anglvel_z_raw_roc_rising_value
1049What: /sys/.../events/in_anglvel_z_raw_roc_falling_value
1050What: /sys/.../events/in_magn_x_raw_roc_rising_value
1051What: /sys/.../events/in_magn_x_raw_roc_falling_value
1052What: /sys/.../events/in_magn_y_raw_roc_rising_value
1053What: /sys/.../events/in_magn_y_raw_roc_falling_value
1054What: /sys/.../events/in_magn_z_raw_roc_rising_value
1055What: /sys/.../events/in_magn_z_raw_roc_falling_value
1056What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value
1057What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value
1058What: /sys/.../events/in_rot_from_north_true_raw_roc_rising_value
1059What: /sys/.../events/in_rot_from_north_true_raw_roc_falling_value
1060What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value
1061What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value
1062What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value
1063What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value
1064What: /sys/.../events/in_voltageY_supply_raw_roc_rising_value
1065What: /sys/.../events/in_voltageY_supply_raw_roc_falling_value
1066What: /sys/.../events/in_voltageY_raw_roc_rising_value
1067What: /sys/.../events/in_voltageY_raw_roc_falling_value
1068What: /sys/.../events/in_tempY_raw_roc_rising_value
1069What: /sys/.../events/in_tempY_raw_roc_falling_value
1070KernelVersion: 2.6.37
1071Contact: linux-iio@vger.kernel.org
1072Description:
1073 Specifies the value of rate of change threshold that the
1074 device is comparing against for the events enabled by
1075 <type>[Y][_name]_roc[_rising|falling]_en.
1076
1077 If separate attributes exist for the two directions,
1078 but direction is not specified for this attribute,
1079 then a single threshold value applies to both directions.
1080 The raw or input element of the name indicates whether the
1081 value is in raw device units or in processed units (as _raw
1082 and _input do on sysfs direct channel read attributes).
1083
1084What: /sys/.../events/in_accel_x_thresh_rising_period
1085What: /sys/.../events/in_accel_x_thresh_falling_period
1086What: /sys/.../events/in_accel_x_roc_rising_period
1087What: /sys/.../events/in_accel_x_roc_falling_period
1088What: /sys/.../events/in_accel_y_thresh_rising_period
1089What: /sys/.../events/in_accel_y_thresh_falling_period
1090What: /sys/.../events/in_accel_y_roc_rising_period
1091What: /sys/.../events/in_accel_y_roc_falling_period
1092What: /sys/.../events/in_accel_z_thresh_rising_period
1093What: /sys/.../events/in_accel_z_thresh_falling_period
1094What: /sys/.../events/in_accel_z_roc_rising_period
1095What: /sys/.../events/in_accel_z_roc_falling_period
1096What: /sys/.../events/in_anglvel_x_thresh_rising_period
1097What: /sys/.../events/in_anglvel_x_thresh_falling_period
1098What: /sys/.../events/in_anglvel_x_roc_rising_period
1099What: /sys/.../events/in_anglvel_x_roc_falling_period
1100What: /sys/.../events/in_anglvel_y_thresh_rising_period
1101What: /sys/.../events/in_anglvel_y_thresh_falling_period
1102What: /sys/.../events/in_anglvel_y_roc_rising_period
1103What: /sys/.../events/in_anglvel_y_roc_falling_period
1104What: /sys/.../events/in_anglvel_z_thresh_rising_period
1105What: /sys/.../events/in_anglvel_z_thresh_falling_period
1106What: /sys/.../events/in_anglvel_z_roc_rising_period
1107What: /sys/.../events/in_anglvel_z_roc_falling_period
1108What: /sys/.../events/in_magn_x_thresh_rising_period
1109What: /sys/.../events/in_magn_x_thresh_falling_period
1110What: /sys/.../events/in_magn_x_roc_rising_period
1111What: /sys/.../events/in_magn_x_roc_falling_period
1112What: /sys/.../events/in_magn_y_thresh_rising_period
1113What: /sys/.../events/in_magn_y_thresh_falling_period
1114What: /sys/.../events/in_magn_y_roc_rising_period
1115What: /sys/.../events/in_magn_y_roc_falling_period
1116What: /sys/.../events/in_magn_z_thresh_rising_period
1117What: /sys/.../events/in_magn_z_thresh_falling_period
1118What: /sys/.../events/in_magn_z_roc_rising_period
1119What: /sys/.../events/in_magn_z_roc_falling_period
1120What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period
1121What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period
1122What: /sys/.../events/in_rot_from_north_magnetic_roc_rising_period
1123What: /sys/.../events/in_rot_from_north_magnetic_roc_falling_period
1124What: /sys/.../events/in_rot_from_north_true_thresh_rising_period
1125What: /sys/.../events/in_rot_from_north_true_thresh_falling_period
1126What: /sys/.../events/in_rot_from_north_true_roc_rising_period
1127What: /sys/.../events/in_rot_from_north_true_roc_falling_period
1128What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period
1129What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period
1130What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period
1131What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period
1132What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period
1133What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period
1134What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period
1135What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period
1136What: /sys/.../events/in_voltageY_supply_thresh_rising_period
1137What: /sys/.../events/in_voltageY_supply_thresh_falling_period
1138What: /sys/.../events/in_voltageY_supply_roc_rising_period
1139What: /sys/.../events/in_voltageY_supply_roc_falling_period
1140What: /sys/.../events/in_voltageY_thresh_rising_period
1141What: /sys/.../events/in_voltageY_thresh_falling_period
1142What: /sys/.../events/in_voltageY_roc_rising_period
1143What: /sys/.../events/in_voltageY_roc_falling_period
1144What: /sys/.../events/in_tempY_thresh_rising_period
1145What: /sys/.../events/in_tempY_thresh_falling_period
1146What: /sys/.../events/in_tempY_roc_rising_period
1147What: /sys/.../events/in_tempY_roc_falling_period
1148What: /sys/.../events/in_accel_x&y&z_mag_falling_period
1149What: /sys/.../events/in_intensity0_thresh_period
1150What: /sys/.../events/in_proximity0_thresh_period
1151What: /sys/.../events/in_activity_still_thresh_rising_period
1152What: /sys/.../events/in_activity_still_thresh_falling_period
1153What: /sys/.../events/in_activity_walking_thresh_rising_period
1154What: /sys/.../events/in_activity_walking_thresh_falling_period
1155What: /sys/.../events/in_activity_jogging_thresh_rising_period
1156What: /sys/.../events/in_activity_jogging_thresh_falling_period
1157What: /sys/.../events/in_activity_running_thresh_rising_period
1158What: /sys/.../events/in_activity_running_thresh_falling_period
1159What: /sys/.../events/in_illuminance_thresh_either_period
1160KernelVersion: 2.6.37
1161Contact: linux-iio@vger.kernel.org
1162Description:
1163 Period of time (in seconds) for which the condition must be
1164 met before an event is generated. If direction is not
1165 specified then this period applies to both directions.
1166
1167What: /sys/.../events/in_accel_thresh_rising_low_pass_filter_3db
1168What: /sys/.../events/in_anglvel_thresh_rising_low_pass_filter_3db
1169What: /sys/.../events/in_magn_thresh_rising_low_pass_filter_3db
1170KernelVersion: 4.2
1171Contact: linux-iio@vger.kernel.org
1172Description:
1173 If a low pass filter can be applied to the event generation
1174 this property gives its 3db frequency in Hz.
1175 A value of zero disables the filter.
1176
1177What: /sys/.../events/in_accel_thresh_rising_high_pass_filter_3db
1178What: /sys/.../events/in_anglvel_thresh_rising_high_pass_filter_3db
1179What: /sys/.../events/in_magn_thresh_rising_high_pass_filter_3db
1180KernelVersion: 4.2
1181Contact: linux-iio@vger.kernel.org
1182Description:
1183 If a high pass filter can be applied to the event generation
1184 this property gives its 3db frequency in Hz.
1185 A value of zero disables the filter.
1186
1187What: /sys/.../events/in_activity_still_thresh_rising_en
1188What: /sys/.../events/in_activity_still_thresh_falling_en
1189What: /sys/.../events/in_activity_walking_thresh_rising_en
1190What: /sys/.../events/in_activity_walking_thresh_falling_en
1191What: /sys/.../events/in_activity_jogging_thresh_rising_en
1192What: /sys/.../events/in_activity_jogging_thresh_falling_en
1193What: /sys/.../events/in_activity_running_thresh_rising_en
1194What: /sys/.../events/in_activity_running_thresh_falling_en
1195KernelVersion: 3.19
1196Contact: linux-iio@vger.kernel.org
1197Description:
1198 Enables or disables activity events. Depending on direction
1199 an event is generated when sensor ENTERS or LEAVES a given state.
1200
1201What: /sys/.../events/in_activity_still_thresh_rising_value
1202What: /sys/.../events/in_activity_still_thresh_falling_value
1203What: /sys/.../events/in_activity_walking_thresh_rising_value
1204What: /sys/.../events/in_activity_walking_thresh_falling_value
1205What: /sys/.../events/in_activity_jogging_thresh_rising_value
1206What: /sys/.../events/in_activity_jogging_thresh_falling_value
1207What: /sys/.../events/in_activity_running_thresh_rising_value
1208What: /sys/.../events/in_activity_running_thresh_falling_value
1209KernelVersion: 3.19
1210Contact: linux-iio@vger.kernel.org
1211Description:
1212 Confidence value (in units as percentage) to be used
1213 for deciding when an event should be generated. E.g for
1214 running: If the confidence value reported by the sensor
1215 is greater than in_activity_running_thresh_rising_value
1216 then the sensor ENTERS running state. Conversely, if the
1217 confidence value reported by the sensor is lower than
1218 in_activity_running_thresh_falling_value then the sensor
1219 is LEAVING running state.
1220
1221What: /sys/.../iio:deviceX/events/in_accel_mag_en
1222What: /sys/.../iio:deviceX/events/in_accel_mag_rising_en
1223What: /sys/.../iio:deviceX/events/in_accel_mag_falling_en
1224What: /sys/.../iio:deviceX/events/in_accel_x_mag_en
1225What: /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en
1226What: /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en
1227What: /sys/.../iio:deviceX/events/in_accel_y_mag_en
1228What: /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en
1229What: /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en
1230What: /sys/.../iio:deviceX/events/in_accel_z_mag_en
1231What: /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en
1232What: /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en
1233What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en
1234What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en
1235KernelVersion: 2.6.37
1236Contact: linux-iio@vger.kernel.org
1237Description:
1238 Similar to in_accel_x_thresh[_rising|_falling]_en, but here the
1239 magnitude of the channel is compared to the threshold, not its
1240 signed value.
1241
1242What: /sys/.../events/in_accel_raw_mag_value
1243What: /sys/.../events/in_accel_x_raw_mag_rising_value
1244What: /sys/.../events/in_accel_y_raw_mag_rising_value
1245What: /sys/.../events/in_accel_z_raw_mag_rising_value
1246KernelVersion: 2.6.37
1247Contact: linux-iio@vger.kernel.org
1248Description:
1249 The value to which the magnitude of the channel is compared. If
1250 number or direction is not specified, applies to all channels of
1251 this type.
1252
1253What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_en
1254What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_rising_en
1255What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_falling_en
1256What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_en
1257What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_rising_en
1258What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_falling_en
1259KernelVersion: 5.18
1260Contact: linux-iio@vger.kernel.org
1261Description:
1262 Similar to in_accel_mag[_y][_rising|_falling]_en, but the event
1263 value is relative to a reference magnitude. The reference magnitude
1264 includes the graviational acceleration.
1265
1266What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_value
1267What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_rising_value
1268What: /sys/.../iio:deviceX/events/in_accel_mag_referenced_falling_value
1269What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_value
1270What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_rising_value
1271What: /sys/.../iio:deviceX/events/in_accel_y_mag_referenced_falling_value
1272KernelVersion: 5.18
1273Contact: linux-iio@vger.kernel.org
1274Description:
1275 The value to which the reference magnitude of the channel is
1276 compared. If the axis is not specified, it applies to all channels
1277 of this type.
1278
1279What: /sys/.../events/in_steps_change_en
1280KernelVersion: 4.0
1281Contact: linux-iio@vger.kernel.org
1282Description:
1283 Event generated when channel passes a threshold on the absolute
1284 change in value. E.g. for steps: a step change event is
1285 generated each time the user takes N steps, where N is set using
1286 in_steps_change_value.
1287
1288What: /sys/.../events/in_steps_change_value
1289KernelVersion: 4.0
1290Contact: linux-iio@vger.kernel.org
1291Description:
1292 Specifies the value of change threshold that the
1293 device is comparing against for the events enabled by
1294 <type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps:
1295 if set to 3, a step change event will be generated every 3
1296 steps.
1297
1298What: /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger
1299KernelVersion: 2.6.35
1300Contact: linux-iio@vger.kernel.org
1301Description:
1302 The name of the trigger source being used, as per string given
1303 in /sys/class/iio/triggerY/name.
1304
1305What: /sys/bus/iio/devices/iio:deviceX/bufferY/length
1306KernelVersion: 5.11
1307Contact: linux-iio@vger.kernel.org
1308Description:
1309 Number of scans contained by the buffer.
1310
1311What: /sys/bus/iio/devices/iio:deviceX/bufferY/enable
1312KernelVersion: 5.11
1313Contact: linux-iio@vger.kernel.org
1314Description:
1315 Actually start the buffer capture up. Will start trigger
1316 if first device and appropriate.
1317
1318 Note that it might be impossible to configure other attributes,
1319 (e.g.: events, scale, sampling rate) if they impact the currently
1320 active buffer capture session.
1321
1322What: /sys/bus/iio/devices/iio:deviceX/bufferY
1323KernelVersion: 5.11
1324Contact: linux-iio@vger.kernel.org
1325Description:
1326 Directory containing interfaces for elements that will be
1327 captured for a single triggered sample set in the buffer.
1328
1329 Since kernel 5.11 the scan_elements attributes are merged into
1330 the bufferY directory, to be configurable per buffer.
1331
1332What: /sys/.../iio:deviceX/bufferY/in_accel_x_en
1333What: /sys/.../iio:deviceX/bufferY/in_accel_y_en
1334What: /sys/.../iio:deviceX/bufferY/in_accel_z_en
1335What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_en
1336What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_en
1337What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_en
1338What: /sys/.../iio:deviceX/bufferY/in_magn_x_en
1339What: /sys/.../iio:deviceX/bufferY/in_magn_y_en
1340What: /sys/.../iio:deviceX/bufferY/in_magn_z_en
1341What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_en
1342What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_en
1343What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_tilt_comp_en
1344What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_tilt_comp_en
1345What: /sys/.../iio:deviceX/bufferY/in_timestamp_en
1346What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_en
1347What: /sys/.../iio:deviceX/bufferY/in_voltageY_en
1348What: /sys/.../iio:deviceX/bufferY/in_voltageY-voltageZ_en
1349What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_en
1350What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_en
1351What: /sys/.../iio:deviceX/bufferY/in_voltage_i_en
1352What: /sys/.../iio:deviceX/bufferY/in_voltage_q_en
1353What: /sys/.../iio:deviceX/bufferY/in_incli_x_en
1354What: /sys/.../iio:deviceX/bufferY/in_incli_y_en
1355What: /sys/.../iio:deviceX/bufferY/in_pressureY_en
1356What: /sys/.../iio:deviceX/bufferY/in_pressure_en
1357What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_en
1358What: /sys/.../iio:deviceX/bufferY/in_proximity_en
1359KernelVersion: 5.11
1360Contact: linux-iio@vger.kernel.org
1361Description:
1362 Scan element control for triggered data capture.
1363
1364What: /sys/.../iio:deviceX/bufferY/in_accel_type
1365What: /sys/.../iio:deviceX/bufferY/in_anglvel_type
1366What: /sys/.../iio:deviceX/bufferY/in_magn_type
1367What: /sys/.../iio:deviceX/bufferY/in_incli_type
1368What: /sys/.../iio:deviceX/bufferY/in_voltageY_type
1369What: /sys/.../iio:deviceX/bufferY/in_voltage_type
1370What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_type
1371What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_type
1372What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_type
1373What: /sys/.../iio:deviceX/bufferY/in_voltage_i_type
1374What: /sys/.../iio:deviceX/bufferY/in_voltage_q_type
1375What: /sys/.../iio:deviceX/bufferY/in_timestamp_type
1376What: /sys/.../iio:deviceX/bufferY/in_pressureY_type
1377What: /sys/.../iio:deviceX/bufferY/in_pressure_type
1378What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_type
1379What: /sys/.../iio:deviceX/bufferY/in_proximity_type
1380KernelVersion: 5.11
1381Contact: linux-iio@vger.kernel.org
1382Description:
1383 Description of the scan element data storage within the buffer
1384 and hence the form in which it is read from user-space.
1385 Form is [be|le]:[s|u]bits/storagebits[>>shift].
1386 be or le specifies big or little endian. s or u specifies if
1387 signed (2's complement) or unsigned. bits is the number of bits
1388 of data and storagebits is the space (after padding) that it
1389 occupies in the buffer. shift if specified, is the shift that
1390 needs to be applied prior to masking out unused bits. Some
1391 devices put their data in the middle of the transferred elements
1392 with additional information on both sides. Note that some
1393 devices will have additional information in the unused bits
1394 so to get a clean value, the bits value must be used to mask
1395 the buffer output value appropriately. The storagebits value
1396 also specifies the data alignment. So s48/64>>2 will be a
1397 signed 48 bit integer stored in a 64 bit location aligned to
1398 a 64 bit boundary. To obtain the clean value, shift right 2
1399 and apply a mask to zero the top 16 bits of the result.
1400 For other storage combinations this attribute will be extended
1401 appropriately.
1402
1403What: /sys/.../iio:deviceX/scan_elements/in_accel_type_available
1404KernelVersion: 2.6.37
1405Contact: linux-iio@vger.kernel.org
1406Description:
1407 If the type parameter can take one of a small set of values,
1408 this attribute lists them.
1409
1410What: /sys/.../iio:deviceX/bufferY/in_voltageY_index
1411What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_index
1412What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_index
1413What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_index
1414What: /sys/.../iio:deviceX/bufferY/in_voltage_i_index
1415What: /sys/.../iio:deviceX/bufferY/in_voltage_q_index
1416What: /sys/.../iio:deviceX/bufferY/in_accel_x_index
1417What: /sys/.../iio:deviceX/bufferY/in_accel_y_index
1418What: /sys/.../iio:deviceX/bufferY/in_accel_z_index
1419What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_index
1420What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_index
1421What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_index
1422What: /sys/.../iio:deviceX/bufferY/in_magn_x_index
1423What: /sys/.../iio:deviceX/bufferY/in_magn_y_index
1424What: /sys/.../iio:deviceX/bufferY/in_magn_z_index
1425What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_index
1426What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_index
1427What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_tilt_comp_index
1428What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_tilt_comp_index
1429What: /sys/.../iio:deviceX/bufferY/in_incli_x_index
1430What: /sys/.../iio:deviceX/bufferY/in_incli_y_index
1431What: /sys/.../iio:deviceX/bufferY/in_timestamp_index
1432What: /sys/.../iio:deviceX/bufferY/in_pressureY_index
1433What: /sys/.../iio:deviceX/bufferY/in_pressure_index
1434What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_index
1435What: /sys/.../iio:deviceX/bufferY/in_proximity_index
1436KernelVersion: 5.11
1437Contact: linux-iio@vger.kernel.org
1438Description:
1439 A single positive integer specifying the position of this
1440 scan element in the buffer. Note these are not dependent on
1441 what is enabled and may not be contiguous. Thus for user-space
1442 to establish the full layout these must be used in conjunction
1443 with all _en attributes to establish which channels are present,
1444 and the relevant _type attributes to establish the data storage
1445 format.
1446
1447What: /sys/.../iio:deviceX/in_activity_still_input
1448What: /sys/.../iio:deviceX/in_activity_walking_input
1449What: /sys/.../iio:deviceX/in_activity_jogging_input
1450What: /sys/.../iio:deviceX/in_activity_running_input
1451KernelVersion: 3.19
1452Contact: linux-iio@vger.kernel.org
1453Description:
1454 This attribute is used to read the confidence for an activity
1455 expressed in units as percentage.
1456
1457What: /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw
1458KernelVersion: 2.6.38
1459Contact: linux-iio@vger.kernel.org
1460Description:
1461 This attribute is used to read the amount of quadrature error
1462 present in the device at a given time.
1463
1464What: /sys/.../iio:deviceX/in_accelX_power_mode
1465KernelVersion: 3.11
1466Contact: linux-iio@vger.kernel.org
1467Description:
1468 Specifies the chip power mode.
1469 low_noise: reduce noise level from ADC,
1470 low_power: enable low current consumption.
1471 For a list of available output power modes read
1472 in_accel_power_mode_available.
1473
1474What: /sys/.../iio:deviceX/in_energy_input
1475What: /sys/.../iio:deviceX/in_energy_raw
1476KernelVersion: 4.0
1477Contact: linux-iio@vger.kernel.org
1478Description:
1479 This attribute is used to read the energy value reported by the
1480 device (e.g.: human activity sensors report energy burnt by the
1481 user). Units after application of scale are Joules.
1482
1483What: /sys/.../iio:deviceX/in_distance_input
1484What: /sys/.../iio:deviceX/in_distance_raw
1485KernelVersion: 4.0
1486Contact: linux-iio@vger.kernel.org
1487Description:
1488 This attribute is used to read the measured distance to an object
1489 or the distance covered by the user since the last reboot while
1490 activated. Units after application of scale are meters.
1491
1492What: /sys/bus/iio/devices/iio:deviceX/store_eeprom
1493KernelVersion: 3.4.0
1494Contact: linux-iio@vger.kernel.org
1495Description:
1496 Writing '1' stores the current device configuration into
1497 on-chip EEPROM. After power-up or chip reset the device will
1498 automatically load the saved configuration.
1499
1500What: /sys/.../iio:deviceX/in_proximity_raw
1501What: /sys/.../iio:deviceX/in_proximity_input
1502What: /sys/.../iio:deviceX/in_proximityY_raw
1503KernelVersion: 3.4
1504Contact: linux-iio@vger.kernel.org
1505Description:
1506 Proximity measurement indicating that some
1507 object is near the sensor, usually by observing
1508 reflectivity of infrared or ultrasound emitted.
1509
1510 Often these sensors are unit less and as such conversion
1511 to SI units is not possible. Higher proximity measurements
1512 indicate closer objects, and vice versa. Units after
1513 application of scale and offset are meters.
1514
1515What: /sys/.../iio:deviceX/in_illuminance_input
1516What: /sys/.../iio:deviceX/in_illuminance_raw
1517What: /sys/.../iio:deviceX/in_illuminanceY_input
1518What: /sys/.../iio:deviceX/in_illuminanceY_raw
1519What: /sys/.../iio:deviceX/in_illuminanceY_mean_raw
1520What: /sys/.../iio:deviceX/in_illuminance_ir_raw
1521What: /sys/.../iio:deviceX/in_illuminance_clear_raw
1522KernelVersion: 3.4
1523Contact: linux-iio@vger.kernel.org
1524Description:
1525 Illuminance measurement, units after application of scale
1526 and offset are lux.
1527
1528What: /sys/.../iio:deviceX/in_intensityY_raw
1529What: /sys/.../iio:deviceX/in_intensityY_ir_raw
1530What: /sys/.../iio:deviceX/in_intensityY_both_raw
1531What: /sys/.../iio:deviceX/in_intensityY_uv_raw
1532What: /sys/.../iio:deviceX/in_intensityY_duv_raw
1533KernelVersion: 3.4
1534Contact: linux-iio@vger.kernel.org
1535Description:
1536 Unit-less light intensity. Modifiers both and ir indicate
1537 that measurements contain visible and infrared light
1538 components or just infrared light, respectively. Modifier
1539 uv indicates that measurements contain ultraviolet light
1540 components. Modifier duv indicates that measurements
1541 contain deep ultraviolet light components.
1542
1543What: /sys/.../iio:deviceX/in_uvindex_input
1544KernelVersion: 4.6
1545Contact: linux-iio@vger.kernel.org
1546Description:
1547 UV light intensity index measuring the human skin's response to
1548 different wavelength of sunlight weighted according to the
1549 standardised CIE Erythemal Action Spectrum. UV index values range
1550 from 0 (low) to >=11 (extreme).
1551
1552What: /sys/.../iio:deviceX/in_intensity_integration_time
1553What: /sys/.../iio:deviceX/in_intensity_red_integration_time
1554What: /sys/.../iio:deviceX/in_intensity_green_integration_time
1555What: /sys/.../iio:deviceX/in_intensity_blue_integration_time
1556What: /sys/.../iio:deviceX/in_intensity_clear_integration_time
1557What: /sys/.../iio:deviceX/in_illuminance_integration_time
1558KernelVersion: 3.12
1559Contact: linux-iio@vger.kernel.org
1560Description:
1561 This attribute is used to get/set the integration time in
1562 seconds. If shared across all channels of a given type,
1563 <type>_integration_time is used.
1564
1565What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time
1566KernelVersion: 4.0
1567Contact: linux-iio@vger.kernel.org
1568Description:
1569 Number of seconds in which to compute speed.
1570
1571What: /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw
1572KernelVersion: 3.15
1573Contact: linux-iio@vger.kernel.org
1574Description:
1575 Raw value of quaternion components using a format
1576 x y z w. Here x, y, and z component represents the axis about
1577 which a rotation will occur and w component represents the
1578 amount of rotation.
1579
1580What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw
1581What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw
1582What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw
1583What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw
1584KernelVersion: 3.15
1585Contact: linux-iio@vger.kernel.org
1586Description:
1587 Raw value of rotation from true/magnetic north measured with
1588 or without compensation from tilt sensors.
1589
1590What: /sys/bus/iio/devices/iio:deviceX/in_currentX_raw
1591What: /sys/bus/iio/devices/iio:deviceX/in_currentX_i_raw
1592What: /sys/bus/iio/devices/iio:deviceX/in_currentX_q_raw
1593KernelVersion: 3.18
1594Contact: linux-iio@vger.kernel.org
1595Description:
1596 Raw current measurement from channel X. Units are in milliamps
1597 after application of scale and offset. If no offset or scale is
1598 present, output should be considered as processed with the
1599 unit in milliamps.
1600
1601 Channels with 'i' and 'q' modifiers always exist in pairs and both
1602 channels refer to the same signal. The 'i' channel contains the in-phase
1603 component of the signal while the 'q' channel contains the quadrature
1604 component.
1605
1606What: /sys/.../iio:deviceX/in_energy_en
1607What: /sys/.../iio:deviceX/in_distance_en
1608What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en
1609What: /sys/.../iio:deviceX/in_steps_en
1610KernelVersion: 3.19
1611Contact: linux-iio@vger.kernel.org
1612Description:
1613 Activates a device feature that runs in firmware/hardware.
1614 E.g. for steps: the pedometer saves power while not used;
1615 when activated, it will count the steps taken by the user in
1616 firmware and export them through in_steps_input.
1617
1618What: /sys/.../iio:deviceX/in_steps_input
1619KernelVersion: 3.19
1620Contact: linux-iio@vger.kernel.org
1621Description:
1622 This attribute is used to read the number of steps taken by the user
1623 since the last reboot while activated.
1624
1625What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input
1626What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw
1627KernelVersion: 3.19
1628Contact: linux-iio@vger.kernel.org
1629Description:
1630 This attribute is used to read the current speed value of the
1631 user (which is the norm or magnitude of the velocity vector).
1632 Units after application of scale are m/s.
1633
1634What: /sys/.../iio:deviceX/in_steps_debounce_count
1635KernelVersion: 4.0
1636Contact: linux-iio@vger.kernel.org
1637Description:
1638 Specifies the number of steps that must occur within
1639 in_steps_filter_debounce_time for the pedometer to decide the
1640 consumer is making steps.
1641
1642What: /sys/.../iio:deviceX/in_steps_debounce_time
1643KernelVersion: 4.0
1644Contact: linux-iio@vger.kernel.org
1645Description:
1646 Specifies number of seconds in which we compute the steps
1647 that occur in order to decide if the consumer is making steps.
1648
1649What: /sys/bus/iio/devices/iio:deviceX/bufferY/watermark
1650KernelVersion: 5.11
1651Contact: linux-iio@vger.kernel.org
1652Description:
1653 A single positive integer specifying the maximum number of scan
1654 elements to wait for.
1655
1656 Poll will block until the watermark is reached.
1657
1658 Blocking read will wait until the minimum between the requested
1659 read amount or the low water mark is available.
1660
1661 Non-blocking read will retrieve the available samples from the
1662 buffer even if there are less samples then watermark level. This
1663 allows the application to block on poll with a timeout and read
1664 the available samples after the timeout expires and thus have a
1665 maximum delay guarantee.
1666
1667What: /sys/bus/iio/devices/iio:deviceX/bufferY/data_available
1668KernelVersion: 5.11
1669Contact: linux-iio@vger.kernel.org
1670Description:
1671 A read-only value indicating the bytes of data available in the
1672 buffer. In the case of an output buffer, this indicates the
1673 amount of empty space available to write data to. In the case of
1674 an input buffer, this indicates the amount of data available for
1675 reading.
1676
1677What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled
1678KernelVersion: 4.2
1679Contact: linux-iio@vger.kernel.org
1680Description:
1681 A read-only boolean value that indicates if the hardware fifo is
1682 currently enabled or disabled. If the device does not have a
1683 hardware fifo this entry is not present.
1684 The hardware fifo is enabled when the buffer is enabled if the
1685 current hardware fifo watermark level is set and other current
1686 device settings allows it (e.g. if a trigger is set that samples
1687 data differently that the hardware fifo does then hardware fifo
1688 will not enabled).
1689
1690 If the hardware fifo is enabled and the level of the hardware
1691 fifo reaches the hardware fifo watermark level the device will
1692 flush its hardware fifo to the device buffer. Doing a non
1693 blocking read on the device when no samples are present in the
1694 device buffer will also force a flush.
1695
1696 When the hardware fifo is enabled there is no need to use a
1697 trigger to use buffer mode since the watermark settings
1698 guarantees that the hardware fifo is flushed to the device
1699 buffer.
1700
1701What: /sys/bus/iio/devices/iio:device*/buffer/hwfifo_timeout
1702KernelVersion: 4.12
1703Contact: linux-iio@vger.kernel.org
1704Description:
1705 A read/write property to provide capability to delay reporting of
1706 samples till a timeout is reached. This allows host processors to
1707 sleep, while the sensor is storing samples in its internal fifo.
1708 The maximum timeout in seconds can be specified by setting
1709 hwfifo_timeout.The current delay can be read by reading
1710 hwfifo_timeout. A value of 0 means that there is no timeout.
1711
1712What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark
1713KernelVersion: 4.2
1714Contact: linux-iio@vger.kernel.org
1715Description:
1716 Read-only entry that contains a single integer specifying the
1717 current watermark level for the hardware fifo. If the device
1718 does not have a hardware fifo this entry is not present.
1719 The watermark level for the hardware fifo is set by the driver
1720 based on the value set by the user in buffer/watermark but
1721 taking into account hardware limitations (e.g. most hardware
1722 buffers are limited to 32-64 samples, some hardware buffers
1723 watermarks are fixed or have minimum levels). A value of 0
1724 means that the hardware watermark is unset.
1725
1726What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_min
1727KernelVersion: 4.2
1728Contact: linux-iio@vger.kernel.org
1729Description:
1730 A single positive integer specifying the minimum watermark level
1731 for the hardware fifo of this device. If the device does not
1732 have a hardware fifo this entry is not present.
1733
1734 If the user sets buffer/watermark to a value less than this one,
1735 then the hardware watermark will remain unset.
1736
1737What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_max
1738KernelVersion: 4.2
1739Contact: linux-iio@vger.kernel.org
1740Description:
1741 A single positive integer specifying the maximum watermark level
1742 for the hardware fifo of this device. If the device does not
1743 have a hardware fifo this entry is not present.
1744
1745 If the user sets buffer/watermark to a value greater than this
1746 one, then the hardware watermark will be capped at this value.
1747
1748What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_available
1749KernelVersion: 4.2
1750Contact: linux-iio@vger.kernel.org
1751Description:
1752 A list of positive integers specifying the available watermark
1753 levels for the hardware fifo. This entry is optional and if it
1754 is not present it means that all the values between
1755 hwfifo_watermark_min and hwfifo_watermark_max are supported.
1756
1757 If the user sets buffer/watermark to a value greater than
1758 hwfifo_watermak_min but not equal to any of the values in this
1759 list, the driver will chose an appropriate value for the
1760 hardware fifo watermark level.
1761
1762What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibemissivity
1763What: /sys/bus/iio/devices/iio:deviceX/in_tempX_calibemissivity
1764What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibemissivity
1765What: /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibemissivity
1766KernelVersion: 4.1
1767Contact: linux-iio@vger.kernel.org
1768Description:
1769 The emissivity ratio of the surface in the field of view of the
1770 contactless temperature sensor. Emissivity varies from 0 to 1,
1771 with 1 being the emissivity of a black body.
1772
1773What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_oversampling_ratio
1774What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_oversampling_ratio
1775What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_oversampling_ratio
1776KernelVersion: 4.2
1777Contact: linux-iio@vger.kernel.org
1778Description:
1779 Hardware applied number of measurements for acquiring one
1780 data point. The HW will do <type>[_name]_oversampling_ratio
1781 measurements and return the average value as output data. Each
1782 value resulted from <type>[_name]_oversampling_ratio measurements
1783 is considered as one sample for <type>[_name]_sampling_frequency.
1784
1785What: /sys/bus/iio/devices/iio:deviceX/in_concentration_raw
1786What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_raw
1787What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw
1788What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_co2_raw
1789What: /sys/bus/iio/devices/iio:deviceX/in_concentration_ethanol_raw
1790What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_ethanol_raw
1791What: /sys/bus/iio/devices/iio:deviceX/in_concentration_h2_raw
1792What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_h2_raw
1793What: /sys/bus/iio/devices/iio:deviceX/in_concentration_o2_raw
1794What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_o2_raw
1795What: /sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw
1796What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw
1797KernelVersion: 4.3
1798Contact: linux-iio@vger.kernel.org
1799Description:
1800 Raw (unscaled no offset etc.) reading of a substance. Units
1801 after application of scale and offset are percents.
1802
1803What: /sys/bus/iio/devices/iio:deviceX/in_resistance_raw
1804What: /sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw
1805What: /sys/bus/iio/devices/iio:deviceX/out_resistance_raw
1806What: /sys/bus/iio/devices/iio:deviceX/out_resistanceX_raw
1807KernelVersion: 4.3
1808Contact: linux-iio@vger.kernel.org
1809Description:
1810 Raw (unscaled no offset etc.) resistance reading that can be processed
1811 into an ohm value.
1812
1813What: /sys/bus/iio/devices/iio:deviceX/heater_enable
1814KernelVersion: 4.1.0
1815Contact: linux-iio@vger.kernel.org
1816Description:
1817 '1' (enable) or '0' (disable) specifying the enable
1818 of heater function. Same reading values apply.
1819
1820 This ABI is especially applicable for humidity sensors
1821 to heatup the device and get rid of any condensation
1822 in some humidity environment
1823
1824What: /sys/bus/iio/devices/iio:deviceX/in_ph_raw
1825KernelVersion: 4.5
1826Contact: linux-iio@vger.kernel.org
1827Description:
1828 Raw (unscaled no offset etc.) pH reading of a substance as a negative
1829 base-10 logarithm of hydrodium ions in a litre of water.
1830
1831What: /sys/bus/iio/devices/iio:deviceX/mount_matrix
1832What: /sys/bus/iio/devices/iio:deviceX/in_mount_matrix
1833What: /sys/bus/iio/devices/iio:deviceX/out_mount_matrix
1834What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_mount_matrix
1835What: /sys/bus/iio/devices/iio:deviceX/in_accel_mount_matrix
1836KernelVersion: 4.6
1837Contact: linux-iio@vger.kernel.org
1838Description:
1839 Mounting matrix for IIO sensors. This is a rotation matrix which
1840 informs userspace about sensor chip's placement relative to the
1841 main hardware it is mounted on.
1842
1843 Main hardware placement is defined according to the local
1844 reference frame related to the physical quantity the sensor
1845 measures.
1846
1847 Given that the rotation matrix is defined in a board specific
1848 way (platform data and / or device-tree), the main hardware
1849 reference frame definition is left to the implementor's choice
1850 (see below for a magnetometer example).
1851
1852 Applications should apply this rotation matrix to samples so
1853 that when main hardware reference frame is aligned onto local
1854 reference frame, then sensor chip reference frame is also
1855 perfectly aligned with it.
1856
1857 Matrix is a 3x3 unitary matrix and typically looks like
1858 [0, 1, 0; 1, 0, 0; 0, 0, -1]. Identity matrix
1859 [1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and main hardware
1860 are perfectly aligned with each other.
1861
1862 For example, a mounting matrix for a magnetometer sensor informs
1863 userspace about sensor chip's ORIENTATION relative to the main
1864 hardware.
1865
1866 More specifically, main hardware orientation is defined with
1867 respect to the LOCAL EARTH GEOMAGNETIC REFERENCE FRAME where :
1868
1869 * Y is in the ground plane and positive towards magnetic North ;
1870 * X is in the ground plane, perpendicular to the North axis and
1871 positive towards the East ;
1872 * Z is perpendicular to the ground plane and positive upwards.
1873
1874 An implementor might consider that for a hand-held device, a
1875 'natural' orientation would be 'front facing camera at the top'.
1876 The main hardware reference frame could then be described as :
1877
1878 * Y is in the plane of the screen and is positive towards the
1879 top of the screen ;
1880 * X is in the plane of the screen, perpendicular to Y axis, and
1881 positive towards the right hand side of the screen ;
1882 * Z is perpendicular to the screen plane and positive out of the
1883 screen.
1884
1885 Another example for a quadrotor UAV might be :
1886
1887 * Y is in the plane of the propellers and positive towards the
1888 front-view camera;
1889 * X is in the plane of the propellers, perpendicular to Y axis,
1890 and positive towards the starboard side of the UAV ;
1891 * Z is perpendicular to propellers plane and positive upwards.
1892
1893What: /sys/bus/iio/devices/iio:deviceX/in_electricalconductivity_raw
1894KernelVersion: 4.8
1895Contact: linux-iio@vger.kernel.org
1896Description:
1897 Raw (unscaled no offset etc.) electric conductivity reading that
1898 can be processed to siemens per meter.
1899
1900What: /sys/bus/iio/devices/iio:deviceX/in_countY_raw
1901KernelVersion: 4.10
1902Contact: linux-iio@vger.kernel.org
1903Description:
1904 This interface is deprecated; please use the Counter subsystem.
1905
1906 Raw counter device counts from channel Y. For quadrature
1907 counters, multiplication by an available [Y]_scale results in
1908 the counts of a single quadrature signal phase from channel Y.
1909
1910What: /sys/bus/iio/devices/iio:deviceX/in_indexY_raw
1911KernelVersion: 4.10
1912Contact: linux-iio@vger.kernel.org
1913Description:
1914 This interface is deprecated; please use the Counter subsystem.
1915
1916 Raw counter device index value from channel Y. This attribute
1917 provides an absolute positional reference (e.g. a pulse once per
1918 revolution) which may be used to home positional systems as
1919 required.
1920
1921What: /sys/bus/iio/devices/iio:deviceX/in_count_count_direction_available
1922KernelVersion: 4.12
1923Contact: linux-iio@vger.kernel.org
1924Description:
1925 This interface is deprecated; please use the Counter subsystem.
1926
1927 A list of possible counting directions which are:
1928
1929 - "up" : counter device is increasing.
1930 - "down": counter device is decreasing.
1931
1932What: /sys/bus/iio/devices/iio:deviceX/in_countY_count_direction
1933KernelVersion: 4.12
1934Contact: linux-iio@vger.kernel.org
1935Description:
1936 This interface is deprecated; please use the Counter subsystem.
1937
1938 Raw counter device counters direction for channel Y.
1939
1940What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_label
1941What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_label
1942KernelVersion: 5.8
1943Contact: linux-iio@vger.kernel.org
1944Description:
1945 Optional symbolic label to a device channel.
1946 If a label is defined for this channel add that to the channel
1947 specific attributes. This is useful for userspace to be able to
1948 better identify an individual channel.
1949
1950What: /sys/bus/iio/devices/iio:deviceX/in_phaseY_raw
1951KernelVersion: 4.18
1952Contact: linux-iio@vger.kernel.org
1953Description:
1954 Raw (unscaled) phase difference reading from channel Y
1955 that can be processed to radians.
1956
1957What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm1_input
1958What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm1_input
1959What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm2p5_input
1960What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm2p5_input
1961What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm4_input
1962What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm4_input
1963What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm10_input
1964What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm10_input
1965KernelVersion: 4.22
1966Contact: linux-iio@vger.kernel.org
1967Description:
1968 Mass concentration reading of particulate matter in ug / m3.
1969 pmX consists of particles with aerodynamic diameter less or
1970 equal to X micrometers.
1971
1972What: /sys/bus/iio/devices/iio:deviceX/events/in_illuminance_period_available
1973Date: November 2019
1974KernelVersion: 5.4
1975Contact: linux-iio@vger.kernel.org
1976Description:
1977 List of valid periods (in seconds) for which the light intensity
1978 must be above the threshold level before interrupt is asserted.
1979
1980What: /sys/bus/iio/devices/iio:deviceX/in_filter_notch_center_frequency
1981KernelVersion: 5.5
1982Contact: linux-iio@vger.kernel.org
1983Description:
1984 Center frequency in Hz for a notch filter. Used i.e. for line
1985 noise suppression.
1986
1987What: /sys/bus/iio/devices/iio:deviceX/in_temp_thermocouple_type
1988KernelVersion: 5.5
1989Contact: linux-iio@vger.kernel.org
1990Description:
1991 One of the following thermocouple types: B, E, J, K, N, R, S, T.
1992
1993What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibambient
1994What: /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibambient
1995KernelVersion: 5.10
1996Contact: linux-iio@vger.kernel.org
1997Description:
1998 Calibrated ambient temperature for object temperature
1999 calculation in milli degrees Celsius.
2000
2001What: /sys/bus/iio/devices/iio:deviceX/in_intensity_x_raw
2002What: /sys/bus/iio/devices/iio:deviceX/in_intensity_y_raw
2003What: /sys/bus/iio/devices/iio:deviceX/in_intensity_z_raw
2004KernelVersion: 5.10
2005Contact: linux-iio@vger.kernel.org
2006Description:
2007 Unscaled light intensity according to CIE 1931/DIN 5033 color space.
2008 Units after application of scale are nano nanowatts per square meter.
2009
2010What: /sys/bus/iio/devices/iio:deviceX/in_anglY_label
2011KernelVersion: 5.12
2012Contact: linux-iio@vger.kernel.org
2013Description:
2014 Optional symbolic label for channel Y.
2015 For Intel hid hinge sensor, the label values are:
2016 hinge, keyboard, screen. It means the three channels
2017 each correspond respectively to hinge angle, keyboard angle,
2018 and screen angle.
2019
2020What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_hysteresis_relative
2021What: /sys/bus/iio/devices/iio:deviceX/in_intensity_hysteresis_relative
2022KernelVersion: 5.12
2023Contact: linux-iio@vger.kernel.org
2024Description:
2025 Specify the percent for light sensor relative to the channel
2026 absolute value that a data field should change before an event
2027 is generated. Units are a percentage of the prior reading.
2028
2029What: /sys/bus/iio/devices/iio:deviceX/calibration_auto_enable
2030Date: June 2020
2031KernelVersion: 5.8
2032Contact: linux-iio@vger.kernel.org
2033Description:
2034 Some sensors have the ability to apply auto calibration at
2035 runtime. For example, it may be necessary to compensate for
2036 contaminant build-up in a measurement chamber or optical
2037 element deterioration that would otherwise lead to sensor drift.
2038
2039 Writing 1 or 0 to this attribute will respectively activate or
2040 deactivate this auto calibration function.
2041
2042 Upon reading, the current status is returned.
2043
2044What: /sys/bus/iio/devices/iio:deviceX/calibration_forced_value
2045Date: June 2020
2046KernelVersion: 5.8
2047Contact: linux-iio@vger.kernel.org
2048Description:
2049 Some sensors have the ability to apply a manual calibration using
2050 a known measurement value, perhaps obtained from an external
2051 reference device.
2052
2053 Writing a value to this function will force such a calibration
2054 change. For the scd30 the value should be from the range
2055 [400 1 2000].
2056
2057 Note for the scd30 that a valid value may only be obtained once
2058 it is has been written. Until then any read back of this value
2059 should be ignored. As for the scd4x an error will be returned
2060 immediately if the manual calibration has failed.
2061
2062What: /sys/bus/iio/devices/iio:deviceX/calibration_forced_value_available
2063KernelVersion: 5.15
2064Contact: linux-iio@vger.kernel.org
2065Description:
2066 Available range for the forced calibration value, expressed as:
2067
2068 - a range specified as "[min step max]"
2069
2070What: /sys/bus/iio/devices/iio:deviceX/in_voltageX_sampling_frequency
2071What: /sys/bus/iio/devices/iio:deviceX/in_powerY_sampling_frequency
2072What: /sys/bus/iio/devices/iio:deviceX/in_currentZ_sampling_frequency
2073KernelVersion: 5.20
2074Contact: linux-iio@vger.kernel.org
2075Description:
2076 Some devices have separate controls of sampling frequency for
2077 individual channels. If multiple channels are enabled in a scan,
2078 then the sampling_frequency of the scan may be computed from the
2079 per channel sampling frequencies.
2080
2081What: /sys/.../events/in_accel_gesture_singletap_en
2082What: /sys/.../events/in_accel_gesture_doubletap_en
2083KernelVersion: 6.1
2084Contact: linux-iio@vger.kernel.org
2085Description:
2086 Device generates an event on a single or double tap.
2087
2088What: /sys/.../events/in_accel_gesture_singletap_value
2089What: /sys/.../events/in_accel_gesture_doubletap_value
2090KernelVersion: 6.1
2091Contact: linux-iio@vger.kernel.org
2092Description:
2093 Specifies the threshold value that the device is comparing
2094 against to generate the tap gesture event. The lower
2095 threshold value increases the sensitivity of tap detection.
2096 Units and the exact meaning of value are device-specific.
2097
2098What: /sys/.../events/in_accel_gesture_tap_value_available
2099KernelVersion: 6.1
2100Contact: linux-iio@vger.kernel.org
2101Description:
2102 Lists all available threshold values which can be used to
2103 modify the sensitivity of the tap detection.
2104
2105What: /sys/.../events/in_accel_gesture_singletap_reset_timeout
2106What: /sys/.../events/in_accel_gesture_doubletap_reset_timeout
2107KernelVersion: 6.1
2108Contact: linux-iio@vger.kernel.org
2109Description:
2110 Specifies the timeout value in seconds for the tap detector
2111 to not to look for another tap event after the event as
2112 occurred. Basically the minimum quiet time between the two
2113 single-tap's or two double-tap's.
2114
2115What: /sys/.../events/in_accel_gesture_tap_reset_timeout_available
2116KernelVersion: 6.1
2117Contact: linux-iio@vger.kernel.org
2118Description:
2119 Lists all available tap reset timeout values. Units in seconds.
2120
2121What: /sys/.../events/in_accel_gesture_doubletap_tap2_min_delay
2122KernelVersion: 6.1
2123Contact: linux-iio@vger.kernel.org
2124Description:
2125 Specifies the minimum quiet time in seconds between the two
2126 taps of a double tap.
2127
2128What: /sys/.../events/in_accel_gesture_doubletap_tap2_min_delay_available
2129KernelVersion: 6.1
2130Contact: linux-iio@vger.kernel.org
2131Description:
2132 Lists all available delay values between two taps in the double
2133 tap. Units in seconds.
2134
2135What: /sys/.../events/in_accel_gesture_tap_maxtomin_time
2136KernelVersion: 6.1
2137Contact: linux-iio@vger.kernel.org
2138Description:
2139 Specifies the maximum time difference allowed between upper
2140 and lower peak of tap to consider it as the valid tap event.
2141 Units in seconds.
2142
2143What: /sys/.../events/in_accel_gesture_tap_maxtomin_time_available
2144KernelVersion: 6.1
2145Contact: linux-iio@vger.kernel.org
2146Description:
2147 Lists all available time values between upper peak to lower
2148 peak. Units in seconds.
2149
2150What: /sys/bus/iio/devices/iio:deviceX/in_rot_yaw_raw
2151What: /sys/bus/iio/devices/iio:deviceX/in_rot_pitch_raw
2152What: /sys/bus/iio/devices/iio:deviceX/in_rot_roll_raw
2153KernelVersion: 6.1
2154Contact: linux-iio@vger.kernel.org
2155Description:
2156 Raw (unscaled) euler angles readings. Units after
2157 application of scale are deg.
2158
2159What: /sys/bus/iio/devices/iio:deviceX/serialnumber
2160KernelVersion: 6.1
2161Contact: linux-iio@vger.kernel.org
2162Description:
2163 An example format is 16-bytes, 2-digits-per-byte, HEX-string
2164 representing the sensor unique ID number.
1What: /sys/bus/iio/devices/iio:deviceX
2KernelVersion: 2.6.35
3Contact: linux-iio@vger.kernel.org
4Description:
5 Hardware chip or device accessed by one communication port.
6 Corresponds to a grouping of sensor channels. X is the IIO
7 index of the device.
8
9What: /sys/bus/iio/devices/triggerX
10KernelVersion: 2.6.35
11Contact: linux-iio@vger.kernel.org
12Description:
13 An event driven driver of data capture to an in kernel buffer.
14 May be provided by a device driver that also has an IIO device
15 based on hardware generated events (e.g. data ready) or
16 provided by a separate driver for other hardware (e.g.
17 periodic timer, GPIO or high resolution timer).
18 Contains trigger type specific elements. These do not
19 generalize well and hence are not documented in this file.
20 X is the IIO index of the trigger.
21
22What: /sys/bus/iio/devices/iio:deviceX/buffer
23KernelVersion: 2.6.35
24Contact: linux-iio@vger.kernel.org
25Description:
26 Directory of attributes relating to the buffer for the device.
27
28What: /sys/bus/iio/devices/iio:deviceX/name
29KernelVersion: 2.6.35
30Contact: linux-iio@vger.kernel.org
31Description:
32 Description of the physical chip / device for device X.
33 Typically a part number.
34
35What: /sys/bus/iio/devices/iio:deviceX/current_timestamp_clock
36KernelVersion: 4.5
37Contact: linux-iio@vger.kernel.org
38Description:
39 String identifying current posix clock used to timestamp
40 buffered samples and events for device X.
41
42What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency
43What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency
44What: /sys/bus/iio/devices/triggerX/sampling_frequency
45KernelVersion: 2.6.35
46Contact: linux-iio@vger.kernel.org
47Description:
48 Some devices have internal clocks. This parameter sets the
49 resulting sampling frequency. In many devices this
50 parameter has an effect on input filters etc. rather than
51 simply controlling when the input is sampled. As this
52 effects data ready triggers, hardware buffers and the sysfs
53 direct access interfaces, it may be found in any of the
54 relevant directories. If it effects all of the above
55 then it is to be found in the base device directory.
56
57What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
58What: /sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available
59What: /sys/.../iio:deviceX/buffer/sampling_frequency_available
60What: /sys/bus/iio/devices/triggerX/sampling_frequency_available
61KernelVersion: 2.6.35
62Contact: linux-iio@vger.kernel.org
63Description:
64 When the internal sampling clock can only take a small
65 discrete set of values, this file lists those available.
66
67What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio
68KernelVersion: 2.6.38
69Contact: linux-iio@vger.kernel.org
70Description:
71 Hardware dependent ADC oversampling. Controls the sampling ratio
72 of the digital filter if available.
73
74What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio_available
75KernelVersion: 2.6.38
76Contact: linux-iio@vger.kernel.org
77Description:
78 Hardware dependent values supported by the oversampling filter.
79
80What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw
81What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw
82What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_raw
83What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_raw
84KernelVersion: 2.6.35
85Contact: linux-iio@vger.kernel.org
86Description:
87 Raw (unscaled no bias removal etc.) voltage measurement from
88 channel Y. In special cases where the channel does not
89 correspond to externally available input one of the named
90 versions may be used. The number must always be specified and
91 unique to allow association with event codes. Units after
92 application of scale and offset are millivolts.
93
94 Channels with 'i' and 'q' modifiers always exist in pairs and both
95 channels refer to the same signal. The 'i' channel contains the in-phase
96 component of the signal while the 'q' channel contains the quadrature
97 component.
98
99What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw
100KernelVersion: 2.6.35
101Contact: linux-iio@vger.kernel.org
102Description:
103 Raw (unscaled) differential voltage measurement equivalent to
104 channel Y - channel Z where these channel numbers apply to the
105 physically equivalent inputs when non differential readings are
106 separately available. In differential only parts, then all that
107 is required is a consistent labeling. Units after application
108 of scale and offset are millivolts.
109
110What: /sys/bus/iio/devices/iio:deviceX/in_currentY_raw
111What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw
112KernelVersion: 3.17
113Contact: linux-iio@vger.kernel.org
114Description:
115 Raw (unscaled no bias removal etc.) current measurement from
116 channel Y. In special cases where the channel does not
117 correspond to externally available input one of the named
118 versions may be used. The number must always be specified and
119 unique to allow association with event codes. Units after
120 application of scale and offset are milliamps.
121
122What: /sys/bus/iio/devices/iio:deviceX/in_powerY_raw
123KernelVersion: 4.5
124Contact: linux-iio@vger.kernel.org
125Description:
126 Raw (unscaled no bias removal etc.) power measurement from
127 channel Y. The number must always be specified and
128 unique to allow association with event codes. Units after
129 application of scale and offset are milliwatts.
130
131What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw
132KernelVersion: 3.2
133Contact: linux-iio@vger.kernel.org
134Description:
135 Raw capacitance measurement from channel Y. Units after
136 application of scale and offset are nanofarads.
137
138What: /sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw
139KernelVersion: 3.2
140Contact: linux-iio@vger.kernel.org
141Description:
142 Raw differential capacitance measurement equivalent to
143 channel Y - channel Z where these channel numbers apply to the
144 physically equivalent inputs when non differential readings are
145 separately available. In differential only parts, then all that
146 is required is a consistent labeling. Units after application
147 of scale and offset are nanofarads.
148
149What: /sys/bus/iio/devices/iio:deviceX/in_temp_raw
150What: /sys/bus/iio/devices/iio:deviceX/in_tempX_raw
151What: /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw
152What: /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw
153What: /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw
154What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw
155KernelVersion: 2.6.35
156Contact: linux-iio@vger.kernel.org
157Description:
158 Raw (unscaled no bias removal etc.) temperature measurement.
159 If an axis is specified it generally means that the temperature
160 sensor is associated with one part of a compound device (e.g.
161 a gyroscope axis). The ambient and object modifiers distinguish
162 between ambient (reference) and distant temperature for contact-
163 less measurements. Units after application of scale and offset
164 are milli degrees Celsius.
165
166What: /sys/bus/iio/devices/iio:deviceX/in_tempX_input
167KernelVersion: 2.6.38
168Contact: linux-iio@vger.kernel.org
169Description:
170 Scaled temperature measurement in milli degrees Celsius.
171
172What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw
173What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw
174What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw
175KernelVersion: 2.6.35
176Contact: linux-iio@vger.kernel.org
177Description:
178 Acceleration in direction x, y or z (may be arbitrarily assigned
179 but should match other such assignments on device).
180 Has all of the equivalent parameters as per voltageY. Units
181 after application of scale and offset are m/s^2.
182
183What: /sys/bus/iio/devices/iio:deviceX/in_gravity_x_raw
184What: /sys/bus/iio/devices/iio:deviceX/in_gravity_y_raw
185What: /sys/bus/iio/devices/iio:deviceX/in_gravity_z_raw
186KernelVersion: 4.11
187Contact: linux-iio@vger.kernel.org
188Description:
189 Gravity in direction x, y or z (may be arbitrarily assigned
190 but should match other such assignments on device).
191 Units after application of scale and offset are m/s^2.
192
193What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
194What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
195What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw
196KernelVersion: 2.6.35
197Contact: linux-iio@vger.kernel.org
198Description:
199 Angular velocity about axis x, y or z (may be arbitrarily
200 assigned). Has all the equivalent parameters as per voltageY.
201 Units after application of scale and offset are radians per
202 second.
203
204What: /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw
205What: /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw
206What: /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw
207KernelVersion: 2.6.35
208Contact: linux-iio@vger.kernel.org
209Description:
210 Inclination raw reading about axis x, y or z (may be
211 arbitrarily assigned). Data converted by application of offset
212 and scale to degrees.
213
214What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw
215What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw
216What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw
217KernelVersion: 2.6.35
218Contact: linux-iio@vger.kernel.org
219Description:
220 Magnetic field along axis x, y or z (may be arbitrarily
221 assigned). Data converted by application of offset
222 then scale to Gauss.
223
224What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw
225What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw
226What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw
227KernelVersion: 2.6.36
228Contact: linux-iio@vger.kernel.org
229Description:
230 Highest value since some reset condition. These
231 attributes allow access to this and are otherwise
232 the direct equivalent of the <type>Y[_name]_raw attributes.
233
234What: /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw
235KernelVersion: 2.6.36
236Contact: linux-iio@vger.kernel.org
237Description:
238 A computed peak value based on the sum squared magnitude of
239 the underlying value in the specified directions.
240
241What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw
242What: /sys/bus/iio/devices/iio:deviceX/in_pressure_raw
243KernelVersion: 3.8
244Contact: linux-iio@vger.kernel.org
245Description:
246 Raw pressure measurement from channel Y. Units after
247 application of scale and offset are kilopascal.
248
249What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_input
250What: /sys/bus/iio/devices/iio:deviceX/in_pressure_input
251KernelVersion: 3.8
252Contact: linux-iio@vger.kernel.org
253Description:
254 Scaled pressure measurement from channel Y, in kilopascal.
255
256What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw
257KernelVersion: 3.14
258Contact: linux-iio@vger.kernel.org
259Description:
260 Raw humidity measurement of air. Units after application of
261 scale and offset are milli percent.
262
263What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input
264KernelVersion: 3.14
265Contact: linux-iio@vger.kernel.org
266Description:
267 Scaled humidity measurement in milli percent.
268
269What: /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw
270KernelVersion: 3.5
271Contact: linux-iio@vger.kernel.org
272Description:
273 Averaged raw measurement from channel X. The number of values
274 used for averaging is device specific. The converting rules for
275 normal raw values also applies to the averaged raw values.
276
277What: /sys/bus/iio/devices/iio:deviceX/in_accel_offset
278What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
279What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
280What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
281What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
282What: /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
283What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset
284What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset
285What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_offset
286What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_offset
287What: /sys/bus/iio/devices/iio:deviceX/in_currentY_offset
288What: /sys/bus/iio/devices/iio:deviceX/in_current_offset
289What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_offset
290What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_offset
291What: /sys/bus/iio/devices/iio:deviceX/in_current_q_offset
292What: /sys/bus/iio/devices/iio:deviceX/in_current_i_offset
293What: /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
294What: /sys/bus/iio/devices/iio:deviceX/in_temp_offset
295What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
296What: /sys/bus/iio/devices/iio:deviceX/in_pressure_offset
297What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
298What: /sys/bus/iio/devices/iio:deviceX/in_magn_offset
299What: /sys/bus/iio/devices/iio:deviceX/in_rot_offset
300KernelVersion: 2.6.35
301Contact: linux-iio@vger.kernel.org
302Description:
303 If known for a device, offset to be added to <type>[Y]_raw prior
304 to scaling by <type>[Y]_scale in order to obtain value in the
305 <type> units as specified in <type>[Y]_raw documentation.
306 Not present if the offset is always 0 or unknown. If Y or
307 axis <x|y|z> is not present, then the offset applies to all
308 in channels of <type>.
309 May be writable if a variable offset can be applied on the
310 device. Note that this is different to calibbias which
311 is for devices (or drivers) that apply offsets to compensate
312 for variation between different instances of the part, typically
313 adjusted by using some hardware supported calibration procedure.
314 Calibbias is applied internally, offset is applied in userspace
315 to the _raw output.
316
317What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
318What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_scale
319What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale
320What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
321What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
322What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_scale
323What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_scale
324What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
325What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
326What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
327What: /sys/bus/iio/devices/iio:deviceX/in_currentY_scale
328What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale
329What: /sys/bus/iio/devices/iio:deviceX/in_current_scale
330What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_scale
331What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_scale
332What: /sys/bus/iio/devices/iio:deviceX/in_current_i_scale
333What: /sys/bus/iio/devices/iio:deviceX/in_current_q_scale
334What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale
335What: /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
336What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
337What: /sys/bus/iio/devices/iio:deviceX/in_energy_scale
338What: /sys/bus/iio/devices/iio:deviceX/in_distance_scale
339What: /sys/bus/iio/devices/iio:deviceX/in_magn_scale
340What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
341What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
342What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale
343What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale
344What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale
345What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale
346What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale
347What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
348What: /sys/bus/iio/devices/iio:deviceX/in_pressure_scale
349What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
350What: /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
351What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
352What: /sys/bus/iio/devices/iio:deviceX/in_countY_scale
353KernelVersion: 2.6.35
354Contact: linux-iio@vger.kernel.org
355Description:
356 If known for a device, scale to be applied to <type>Y[_name]_raw
357 post addition of <type>[Y][_name]_offset in order to obtain the
358 measured value in <type> units as specified in
359 <type>[Y][_name]_raw documentation. If shared across all in
360 channels then Y and <x|y|z> are not present and the value is
361 called <type>[Y][_name]_scale. The peak modifier means this
362 value is applied to <type>Y[_name]_peak_raw values.
363
364What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
365What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
366What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
367What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
368What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
369What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
370What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
371What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
372What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
373What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
374KernelVersion: 2.6.35
375Contact: linux-iio@vger.kernel.org
376Description:
377 Hardware applied calibration offset (assumed to fix production
378 inaccuracies).
379
380What /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
381What /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
382What /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale
383What /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale
384What /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale
385What /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale
386What /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
387What /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
388What /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
389What /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
390What /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
391What /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
392What /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
393what /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
394what /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
395What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
396What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
397What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale
398KernelVersion: 2.6.35
399Contact: linux-iio@vger.kernel.org
400Description:
401 Hardware applied calibration scale factor (assumed to fix
402 production inaccuracies). If shared across all channels,
403 <type>_calibscale is used.
404
405What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender
406What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender
407What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender
408What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender
409KernelVersion: 4.0
410Contact: linux-iio@vger.kernel.org
411Description:
412 Gender of the user (e.g.: male, female) used by some pedometers
413 to compute the stride length, distance, speed and activity
414 type.
415
416What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available
417What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available
418What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available
419What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available
420KernelVersion: 4.0
421Contact: linux-iio@vger.kernel.org
422Description:
423 Lists all available gender values (e.g.: male, female).
424
425What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibheight
426What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibheight
427What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibheight
428What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight
429KernelVersion: 3.19
430Contact: linux-iio@vger.kernel.org
431Description:
432 Height of the user (in meters) used by some pedometers
433 to compute the stride length, distance, speed and activity
434 type.
435
436What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight
437KernelVersion: 4.0
438Contact: linux-iio@vger.kernel.org
439Description:
440 Weight of the user (in kg). It is needed by some pedometers
441 to compute the calories burnt by the user.
442
443What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
444What: /sys/.../iio:deviceX/in_anglvel_scale_available
445What: /sys/.../iio:deviceX/in_magn_scale_available
446What: /sys/.../iio:deviceX/in_illuminance_scale_available
447What: /sys/.../iio:deviceX/in_intensity_scale_available
448What: /sys/.../iio:deviceX/in_proximity_scale_available
449What: /sys/.../iio:deviceX/in_voltageX_scale_available
450What: /sys/.../iio:deviceX/in_voltage-voltage_scale_available
451What: /sys/.../iio:deviceX/out_voltageX_scale_available
452What: /sys/.../iio:deviceX/out_altvoltageX_scale_available
453What: /sys/.../iio:deviceX/in_capacitance_scale_available
454What: /sys/.../iio:deviceX/in_pressure_scale_available
455What: /sys/.../iio:deviceX/in_pressureY_scale_available
456KernelVersion: 2.6.35
457Contact: linux-iio@vger.kernel.org
458Description:
459 If a discrete set of scale values is available, they
460 are listed in this attribute.
461
462What /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
463What: /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
464What: /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
465What: /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
466What: /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
467KernelVersion: 2.6.35
468Contact: linux-iio@vger.kernel.org
469Description:
470 Hardware applied gain factor. If shared across all channels,
471 <type>_hardwaregain is used.
472
473What: /sys/.../in_accel_filter_low_pass_3db_frequency
474What: /sys/.../in_magn_filter_low_pass_3db_frequency
475What: /sys/.../in_anglvel_filter_low_pass_3db_frequency
476KernelVersion: 3.2
477Contact: linux-iio@vger.kernel.org
478Description:
479 If a known or controllable low pass filter is applied
480 to the underlying data channel, then this parameter
481 gives the 3dB frequency of the filter in Hz.
482
483What: /sys/.../in_accel_filter_high_pass_3db_frequency
484What: /sys/.../in_anglvel_filter_high_pass_3db_frequency
485What: /sys/.../in_magn_filter_high_pass_3db_frequency
486KernelVersion: 4.2
487Contact: linux-iio@vger.kernel.org
488Description:
489 If a known or controllable high pass filter is applied
490 to the underlying data channel, then this parameter
491 gives the 3dB frequency of the filter in Hz.
492
493What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw
494What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw
495KernelVersion: 2.6.37
496Contact: linux-iio@vger.kernel.org
497Description:
498 Raw (unscaled, no bias etc.) output voltage for
499 channel Y. The number must always be specified and
500 unique if the output corresponds to a single channel.
501 While DAC like devices typically use out_voltage,
502 a continuous frequency generating device, such as
503 a DDS or PLL should use out_altvoltage.
504
505What: /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw
506What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw
507KernelVersion: 2.6.37
508Contact: linux-iio@vger.kernel.org
509Description:
510 Raw (unscaled, no bias etc.) output voltage for an aggregate of
511 channel Y, channel Z, etc. This interface is available in cases
512 where a single output sets the value for multiple channels
513 simultaneously.
514
515What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode
516What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode
517What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode
518What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode
519KernelVersion: 2.6.38
520Contact: linux-iio@vger.kernel.org
521Description:
522 Specifies the output powerdown mode.
523 DAC output stage is disconnected from the amplifier and
524 1kohm_to_gnd: connected to ground via an 1kOhm resistor,
525 2.5kohm_to_gnd: connected to ground via a 2.5kOhm resistor,
526 6kohm_to_gnd: connected to ground via a 6kOhm resistor,
527 20kohm_to_gnd: connected to ground via a 20kOhm resistor,
528 90kohm_to_gnd: connected to ground via a 90kOhm resistor,
529 100kohm_to_gnd: connected to ground via an 100kOhm resistor,
530 125kohm_to_gnd: connected to ground via an 125kOhm resistor,
531 500kohm_to_gnd: connected to ground via a 500kOhm resistor,
532 640kohm_to_gnd: connected to ground via a 640kOhm resistor,
533 three_state: left floating.
534 For a list of available output power down options read
535 outX_powerdown_mode_available. If Y is not present the
536 mode is shared across all outputs.
537
538What: /sys/.../iio:deviceX/out_voltageY_powerdown_mode_available
539What: /sys/.../iio:deviceX/out_voltage_powerdown_mode_available
540What: /sys/.../iio:deviceX/out_altvoltageY_powerdown_mode_available
541What: /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available
542KernelVersion: 2.6.38
543Contact: linux-iio@vger.kernel.org
544Description:
545 Lists all available output power down modes.
546 If Y is not present the mode is shared across all outputs.
547
548What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown
549What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown
550What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown
551What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown
552KernelVersion: 2.6.38
553Contact: linux-iio@vger.kernel.org
554Description:
555 Writing 1 causes output Y to enter the power down mode specified
556 by the corresponding outY_powerdown_mode. DAC output stage is
557 disconnected from the amplifier. Clearing returns to normal
558 operation. Y may be suppressed if all outputs are controlled
559 together.
560
561What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency
562KernelVersion: 3.4.0
563Contact: linux-iio@vger.kernel.org
564Description:
565 Output frequency for channel Y in Hz. The number must always be
566 specified and unique if the output corresponds to a single
567 channel.
568
569What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase
570KernelVersion: 3.4.0
571Contact: linux-iio@vger.kernel.org
572Description:
573 Phase in radians of one frequency/clock output Y
574 (out_altvoltageY) relative to another frequency/clock output
575 (out_altvoltageZ) of the device X. The number must always be
576 specified and unique if the output corresponds to a single
577 channel.
578
579What: /sys/bus/iio/devices/iio:deviceX/events
580KernelVersion: 2.6.35
581Contact: linux-iio@vger.kernel.org
582Description:
583 Configuration of which hardware generated events are passed up
584 to user-space.
585
586What: /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en
587What: /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en
588What: /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en
589What: /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en
590What: /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en
591What: /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en
592What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en
593What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en
594What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en
595What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en
596What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en
597What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en
598What: /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en
599What: /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en
600What: /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en
601What: /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en
602What: /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en
603What: /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en
604What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en
605What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en
606What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en
607What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en
608What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en
609What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en
610What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en
611What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en
612What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en
613What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en
614What: /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en
615What: /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en
616What: /sys/.../iio:deviceX/events/in_voltageY_thresh_either_en
617What: /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
618What: /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
619KernelVersion: 2.6.37
620Contact: linux-iio@vger.kernel.org
621Description:
622 Event generated when channel passes a threshold in the specified
623 (_rising|_falling) direction. If the direction is not specified,
624 then either the device will report an event which ever direction
625 a single threshold value is passed in (e.g.
626 <type>[Y][_name]_<raw|input>_thresh_value) or
627 <type>[Y][_name]_<raw|input>_thresh_rising_value and
628 <type>[Y][_name]_<raw|input>_thresh_falling_value may take
629 different values, but the device can only enable both thresholds
630 or neither.
631 Note the driver will assume the last p events requested are
632 to be enabled where p is how many it supports (which may vary
633 depending on the exact set requested. So if you want to be
634 sure you have set what you think you have, check the contents of
635 these attributes after everything is configured. Drivers may
636 have to buffer any parameters so that they are consistent when
637 a given event type is enabled at a future point (and not those for
638 whatever event was previously enabled).
639
640What: /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en
641What: /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en
642What: /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en
643What: /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en
644What: /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en
645What: /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en
646What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en
647What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en
648What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en
649What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en
650What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en
651What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en
652What: /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en
653What: /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en
654What: /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en
655What: /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en
656What: /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en
657What: /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en
658What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en
659What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en
660What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en
661What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en
662What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en
663What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en
664What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en
665What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en
666What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en
667What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en
668What: /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en
669What: /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en
670What: /sys/.../iio:deviceX/events/in_tempY_roc_rising_en
671What: /sys/.../iio:deviceX/events/in_tempY_roc_falling_en
672KernelVersion: 2.6.37
673Contact: linux-iio@vger.kernel.org
674Description:
675 Event generated when channel passes a threshold on the rate of
676 change (1st differential) in the specified (_rising|_falling)
677 direction. If the direction is not specified, then either the
678 device will report an event which ever direction a single
679 threshold value is passed in (e.g.
680 <type>[Y][_name]_<raw|input>_roc_value) or
681 <type>[Y][_name]_<raw|input>_roc_rising_value and
682 <type>[Y][_name]_<raw|input>_roc_falling_value may take
683 different values, but the device can only enable both rate of
684 change thresholds or neither.
685 Note the driver will assume the last p events requested are
686 to be enabled where p is however many it supports (which may
687 vary depending on the exact set requested. So if you want to be
688 sure you have set what you think you have, check the contents of
689 these attributes after everything is configured. Drivers may
690 have to buffer any parameters so that they are consistent when
691 a given event type is enabled a future point (and not those for
692 whatever event was previously enabled).
693
694What: /sys/.../events/in_accel_thresh_rising_value
695What: /sys/.../events/in_accel_thresh_falling_value
696What: /sys/.../events/in_accel_x_raw_thresh_rising_value
697What: /sys/.../events/in_accel_x_raw_thresh_falling_value
698What: /sys/.../events/in_accel_y_raw_thresh_rising_value
699What: /sys/.../events/in_accel_y_raw_thresh_falling_value
700What: /sys/.../events/in_accel_z_raw_thresh_rising_value
701What: /sys/.../events/in_accel_z_raw_thresh_falling_value
702What: /sys/.../events/in_anglvel_x_raw_thresh_rising_value
703What: /sys/.../events/in_anglvel_x_raw_thresh_falling_value
704What: /sys/.../events/in_anglvel_y_raw_thresh_rising_value
705What: /sys/.../events/in_anglvel_y_raw_thresh_falling_value
706What: /sys/.../events/in_anglvel_z_raw_thresh_rising_value
707What: /sys/.../events/in_anglvel_z_raw_thresh_falling_value
708What: /sys/.../events/in_magn_x_raw_thresh_rising_value
709What: /sys/.../events/in_magn_x_raw_thresh_falling_value
710What: /sys/.../events/in_magn_y_raw_thresh_rising_value
711What: /sys/.../events/in_magn_y_raw_thresh_falling_value
712What: /sys/.../events/in_magn_z_raw_thresh_rising_value
713What: /sys/.../events/in_magn_z_raw_thresh_falling_value
714What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value
715What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value
716What: /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value
717What: /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value
718What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value
719What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value
720What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value
721What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value
722What: /sys/.../events/in_voltageY_supply_raw_thresh_rising_value
723What: /sys/.../events/in_voltageY_supply_raw_thresh_falling_value
724What: /sys/.../events/in_voltageY_raw_thresh_rising_value
725What: /sys/.../events/in_voltageY_raw_thresh_falling_value
726What: /sys/.../events/in_tempY_raw_thresh_rising_value
727What: /sys/.../events/in_tempY_raw_thresh_falling_value
728What: /sys/.../events/in_illuminance0_thresh_falling_value
729what: /sys/.../events/in_illuminance0_thresh_rising_value
730what: /sys/.../events/in_proximity0_thresh_falling_value
731what: /sys/.../events/in_proximity0_thresh_rising_value
732KernelVersion: 2.6.37
733Contact: linux-iio@vger.kernel.org
734Description:
735 Specifies the value of threshold that the device is comparing
736 against for the events enabled by
737 <type>Y[_name]_thresh[_rising|falling]_en.
738 If separate attributes exist for the two directions, but
739 direction is not specified for this attribute, then a single
740 threshold value applies to both directions.
741 The raw or input element of the name indicates whether the
742 value is in raw device units or in processed units (as _raw
743 and _input do on sysfs direct channel read attributes).
744
745What: /sys/.../events/in_accel_scale
746What: /sys/.../events/in_accel_peak_scale
747What: /sys/.../events/in_anglvel_scale
748What: /sys/.../events/in_magn_scale
749What: /sys/.../events/in_rot_from_north_magnetic_scale
750What: /sys/.../events/in_rot_from_north_true_scale
751What: /sys/.../events/in_voltage_scale
752What: /sys/.../events/in_voltage_supply_scale
753What: /sys/.../events/in_temp_scale
754What: /sys/.../events/in_illuminance_scale
755What: /sys/.../events/in_proximity_scale
756KernelVersion: 3.21
757Contact: linux-iio@vger.kernel.org
758Description:
759 Specifies the conversion factor from the standard units
760 to device specific units used to set the event trigger
761 threshold.
762
763What: /sys/.../events/in_accel_x_thresh_rising_hysteresis
764What: /sys/.../events/in_accel_x_thresh_falling_hysteresis
765What: /sys/.../events/in_accel_x_thresh_either_hysteresis
766What: /sys/.../events/in_accel_y_thresh_rising_hysteresis
767What: /sys/.../events/in_accel_y_thresh_falling_hysteresis
768What: /sys/.../events/in_accel_y_thresh_either_hysteresis
769What: /sys/.../events/in_accel_z_thresh_rising_hysteresis
770What: /sys/.../events/in_accel_z_thresh_falling_hysteresis
771What: /sys/.../events/in_accel_z_thresh_either_hysteresis
772What: /sys/.../events/in_anglvel_x_thresh_rising_hysteresis
773What: /sys/.../events/in_anglvel_x_thresh_falling_hysteresis
774What: /sys/.../events/in_anglvel_x_thresh_either_hysteresis
775What: /sys/.../events/in_anglvel_y_thresh_rising_hysteresis
776What: /sys/.../events/in_anglvel_y_thresh_falling_hysteresis
777What: /sys/.../events/in_anglvel_y_thresh_either_hysteresis
778What: /sys/.../events/in_anglvel_z_thresh_rising_hysteresis
779What: /sys/.../events/in_anglvel_z_thresh_falling_hysteresis
780What: /sys/.../events/in_anglvel_z_thresh_either_hysteresis
781What: /sys/.../events/in_magn_x_thresh_rising_hysteresis
782What: /sys/.../events/in_magn_x_thresh_falling_hysteresis
783What: /sys/.../events/in_magn_x_thresh_either_hysteresis
784What: /sys/.../events/in_magn_y_thresh_rising_hysteresis
785What: /sys/.../events/in_magn_y_thresh_falling_hysteresis
786What: /sys/.../events/in_magn_y_thresh_either_hysteresis
787What: /sys/.../events/in_magn_z_thresh_rising_hysteresis
788What: /sys/.../events/in_magn_z_thresh_falling_hysteresis
789What: /sys/.../events/in_magn_z_thresh_either_hysteresis
790What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis
791What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis
792What: /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis
793What: /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis
794What: /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis
795What: /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis
796What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis
797What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis
798What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis
799What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis
800What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis
801What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis
802What: /sys/.../events/in_voltageY_thresh_rising_hysteresis
803What: /sys/.../events/in_voltageY_thresh_falling_hysteresis
804What: /sys/.../events/in_voltageY_thresh_either_hysteresis
805What: /sys/.../events/in_tempY_thresh_rising_hysteresis
806What: /sys/.../events/in_tempY_thresh_falling_hysteresis
807What: /sys/.../events/in_tempY_thresh_either_hysteresis
808What: /sys/.../events/in_illuminance0_thresh_falling_hysteresis
809what: /sys/.../events/in_illuminance0_thresh_rising_hysteresis
810what: /sys/.../events/in_illuminance0_thresh_either_hysteresis
811what: /sys/.../events/in_proximity0_thresh_falling_hysteresis
812what: /sys/.../events/in_proximity0_thresh_rising_hysteresis
813what: /sys/.../events/in_proximity0_thresh_either_hysteresis
814KernelVersion: 3.13
815Contact: linux-iio@vger.kernel.org
816Description:
817 Specifies the hysteresis of threshold that the device is comparing
818 against for the events enabled by
819 <type>Y[_name]_thresh[_(rising|falling)]_hysteresis.
820 If separate attributes exist for the two directions, but
821 direction is not specified for this attribute, then a single
822 hysteresis value applies to both directions.
823 For falling events the hysteresis is added to the _value attribute for
824 this event to get the upper threshold for when the event goes back to
825 normal, for rising events the hysteresis is subtracted from the _value
826 attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200
827 and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event
828 will get activated once in_voltage0_raw goes above 1200 and will become
829 deactivated again once the value falls below 1150.
830
831What: /sys/.../events/in_accel_x_raw_roc_rising_value
832What: /sys/.../events/in_accel_x_raw_roc_falling_value
833What: /sys/.../events/in_accel_y_raw_roc_rising_value
834What: /sys/.../events/in_accel_y_raw_roc_falling_value
835What: /sys/.../events/in_accel_z_raw_roc_rising_value
836What: /sys/.../events/in_accel_z_raw_roc_falling_value
837What: /sys/.../events/in_anglvel_x_raw_roc_rising_value
838What: /sys/.../events/in_anglvel_x_raw_roc_falling_value
839What: /sys/.../events/in_anglvel_y_raw_roc_rising_value
840What: /sys/.../events/in_anglvel_y_raw_roc_falling_value
841What: /sys/.../events/in_anglvel_z_raw_roc_rising_value
842What: /sys/.../events/in_anglvel_z_raw_roc_falling_value
843What: /sys/.../events/in_magn_x_raw_roc_rising_value
844What: /sys/.../events/in_magn_x_raw_roc_falling_value
845What: /sys/.../events/in_magn_y_raw_roc_rising_value
846What: /sys/.../events/in_magn_y_raw_roc_falling_value
847What: /sys/.../events/in_magn_z_raw_roc_rising_value
848What: /sys/.../events/in_magn_z_raw_roc_falling_value
849What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value
850What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value
851What: /sys/.../events/in_rot_from_north_true_raw_roc_rising_value
852What: /sys/.../events/in_rot_from_north_true_raw_roc_falling_value
853What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value
854What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value
855What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value
856What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value
857What: /sys/.../events/in_voltageY_supply_raw_roc_rising_value
858What: /sys/.../events/in_voltageY_supply_raw_roc_falling_value
859What: /sys/.../events/in_voltageY_raw_roc_rising_value
860What: /sys/.../events/in_voltageY_raw_roc_falling_value
861What: /sys/.../events/in_tempY_raw_roc_rising_value
862What: /sys/.../events/in_tempY_raw_roc_falling_value
863KernelVersion: 2.6.37
864Contact: linux-iio@vger.kernel.org
865Description:
866 Specifies the value of rate of change threshold that the
867 device is comparing against for the events enabled by
868 <type>[Y][_name]_roc[_rising|falling]_en.
869 If separate attributes exist for the two directions,
870 but direction is not specified for this attribute,
871 then a single threshold value applies to both directions.
872 The raw or input element of the name indicates whether the
873 value is in raw device units or in processed units (as _raw
874 and _input do on sysfs direct channel read attributes).
875
876What: /sys/.../events/in_accel_x_thresh_rising_period
877What: /sys/.../events/in_accel_x_thresh_falling_period
878What: /sys/.../events/in_accel_x_roc_rising_period
879What: /sys/.../events/in_accel_x_roc_falling_period
880What: /sys/.../events/in_accel_y_thresh_rising_period
881What: /sys/.../events/in_accel_y_thresh_falling_period
882What: /sys/.../events/in_accel_y_roc_rising_period
883What: /sys/.../events/in_accel_y_roc_falling_period
884What: /sys/.../events/in_accel_z_thresh_rising_period
885What: /sys/.../events/in_accel_z_thresh_falling_period
886What: /sys/.../events/in_accel_z_roc_rising_period
887What: /sys/.../events/in_accel_z_roc_falling_period
888What: /sys/.../events/in_anglvel_x_thresh_rising_period
889What: /sys/.../events/in_anglvel_x_thresh_falling_period
890What: /sys/.../events/in_anglvel_x_roc_rising_period
891What: /sys/.../events/in_anglvel_x_roc_falling_period
892What: /sys/.../events/in_anglvel_y_thresh_rising_period
893What: /sys/.../events/in_anglvel_y_thresh_falling_period
894What: /sys/.../events/in_anglvel_y_roc_rising_period
895What: /sys/.../events/in_anglvel_y_roc_falling_period
896What: /sys/.../events/in_anglvel_z_thresh_rising_period
897What: /sys/.../events/in_anglvel_z_thresh_falling_period
898What: /sys/.../events/in_anglvel_z_roc_rising_period
899What: /sys/.../events/in_anglvel_z_roc_falling_period
900What: /sys/.../events/in_magn_x_thresh_rising_period
901What: /sys/.../events/in_magn_x_thresh_falling_period
902What: /sys/.../events/in_magn_x_roc_rising_period
903What: /sys/.../events/in_magn_x_roc_falling_period
904What: /sys/.../events/in_magn_y_thresh_rising_period
905What: /sys/.../events/in_magn_y_thresh_falling_period
906What: /sys/.../events/in_magn_y_roc_rising_period
907What: /sys/.../events/in_magn_y_roc_falling_period
908What: /sys/.../events/in_magn_z_thresh_rising_period
909What: /sys/.../events/in_magn_z_thresh_falling_period
910What: /sys/.../events/in_magn_z_roc_rising_period
911What: /sys/.../events/in_magn_z_roc_falling_period
912What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period
913What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period
914What: /sys/.../events/in_rot_from_north_magnetic_roc_rising_period
915What: /sys/.../events/in_rot_from_north_magnetic_roc_falling_period
916What: /sys/.../events/in_rot_from_north_true_thresh_rising_period
917What: /sys/.../events/in_rot_from_north_true_thresh_falling_period
918What: /sys/.../events/in_rot_from_north_true_roc_rising_period
919What: /sys/.../events/in_rot_from_north_true_roc_falling_period
920What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period
921What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period
922What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period
923What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period
924What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period
925What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period
926What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period
927What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period
928What: /sys/.../events/in_voltageY_supply_thresh_rising_period
929What: /sys/.../events/in_voltageY_supply_thresh_falling_period
930What: /sys/.../events/in_voltageY_supply_roc_rising_period
931What: /sys/.../events/in_voltageY_supply_roc_falling_period
932What: /sys/.../events/in_voltageY_thresh_rising_period
933What: /sys/.../events/in_voltageY_thresh_falling_period
934What: /sys/.../events/in_voltageY_roc_rising_period
935What: /sys/.../events/in_voltageY_roc_falling_period
936What: /sys/.../events/in_tempY_thresh_rising_period
937What: /sys/.../events/in_tempY_thresh_falling_period
938What: /sys/.../events/in_tempY_roc_rising_period
939What: /sys/.../events/in_tempY_roc_falling_period
940What: /sys/.../events/in_accel_x&y&z_mag_falling_period
941What: /sys/.../events/in_intensity0_thresh_period
942What: /sys/.../events/in_proximity0_thresh_period
943What: /sys/.../events/in_activity_still_thresh_rising_period
944What: /sys/.../events/in_activity_still_thresh_falling_period
945What: /sys/.../events/in_activity_walking_thresh_rising_period
946What: /sys/.../events/in_activity_walking_thresh_falling_period
947What: /sys/.../events/in_activity_jogging_thresh_rising_period
948What: /sys/.../events/in_activity_jogging_thresh_falling_period
949What: /sys/.../events/in_activity_running_thresh_rising_period
950What: /sys/.../events/in_activity_running_thresh_falling_period
951KernelVersion: 2.6.37
952Contact: linux-iio@vger.kernel.org
953Description:
954 Period of time (in seconds) for which the condition must be
955 met before an event is generated. If direction is not
956 specified then this period applies to both directions.
957
958What: /sys/.../events/in_accel_thresh_rising_low_pass_filter_3db
959What: /sys/.../events/in_anglvel_thresh_rising_low_pass_filter_3db
960What: /sys/.../events/in_magn_thresh_rising_low_pass_filter_3db
961KernelVersion: 4.2
962Contact: linux-iio@vger.kernel.org
963Description:
964 If a low pass filter can be applied to the event generation
965 this property gives its 3db frequency in Hz.
966 A value of zero disables the filter.
967
968What: /sys/.../events/in_accel_thresh_rising_high_pass_filter_3db
969What: /sys/.../events/in_anglvel_thresh_rising_high_pass_filter_3db
970What: /sys/.../events/in_magn_thresh_rising_high_pass_filter_3db
971KernelVersion: 4.2
972Contact: linux-iio@vger.kernel.org
973Description:
974 If a high pass filter can be applied to the event generation
975 this property gives its 3db frequency in Hz.
976 A value of zero disables the filter.
977
978What: /sys/.../events/in_activity_still_thresh_rising_en
979What: /sys/.../events/in_activity_still_thresh_falling_en
980What: /sys/.../events/in_activity_walking_thresh_rising_en
981What: /sys/.../events/in_activity_walking_thresh_falling_en
982What: /sys/.../events/in_activity_jogging_thresh_rising_en
983What: /sys/.../events/in_activity_jogging_thresh_falling_en
984What: /sys/.../events/in_activity_running_thresh_rising_en
985What: /sys/.../events/in_activity_running_thresh_falling_en
986KernelVersion: 3.19
987Contact: linux-iio@vger.kernel.org
988Description:
989 Enables or disables activitity events. Depending on direction
990 an event is generated when sensor ENTERS or LEAVES a given state.
991
992What: /sys/.../events/in_activity_still_thresh_rising_value
993What: /sys/.../events/in_activity_still_thresh_falling_value
994What: /sys/.../events/in_activity_walking_thresh_rising_value
995What: /sys/.../events/in_activity_walking_thresh_falling_value
996What: /sys/.../events/in_activity_jogging_thresh_rising_value
997What: /sys/.../events/in_activity_jogging_thresh_falling_value
998What: /sys/.../events/in_activity_running_thresh_rising_value
999What: /sys/.../events/in_activity_running_thresh_falling_value
1000KernelVersion: 3.19
1001Contact: linux-iio@vger.kernel.org
1002Description:
1003 Confidence value (in units as percentage) to be used
1004 for deciding when an event should be generated. E.g for
1005 running: If the confidence value reported by the sensor
1006 is greater than in_activity_running_thresh_rising_value
1007 then the sensor ENTERS running state. Conversely, if the
1008 confidence value reported by the sensor is lower than
1009 in_activity_running_thresh_falling_value then the sensor
1010 is LEAVING running state.
1011
1012What: /sys/.../iio:deviceX/events/in_accel_mag_en
1013What: /sys/.../iio:deviceX/events/in_accel_mag_rising_en
1014What: /sys/.../iio:deviceX/events/in_accel_mag_falling_en
1015What: /sys/.../iio:deviceX/events/in_accel_x_mag_en
1016What: /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en
1017What: /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en
1018What: /sys/.../iio:deviceX/events/in_accel_y_mag_en
1019What: /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en
1020What: /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en
1021What: /sys/.../iio:deviceX/events/in_accel_z_mag_en
1022What: /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en
1023What: /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en
1024What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en
1025What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en
1026KernelVersion: 2.6.37
1027Contact: linux-iio@vger.kernel.org
1028Description:
1029 Similar to in_accel_x_thresh[_rising|_falling]_en, but here the
1030 magnitude of the channel is compared to the threshold, not its
1031 signed value.
1032
1033What: /sys/.../events/in_accel_raw_mag_value
1034What: /sys/.../events/in_accel_x_raw_mag_rising_value
1035What: /sys/.../events/in_accel_y_raw_mag_rising_value
1036What: /sys/.../events/in_accel_z_raw_mag_rising_value
1037KernelVersion: 2.6.37
1038Contact: linux-iio@vger.kernel.org
1039Description:
1040 The value to which the magnitude of the channel is compared. If
1041 number or direction is not specified, applies to all channels of
1042 this type.
1043
1044What: /sys/.../events/in_steps_change_en
1045KernelVersion: 4.0
1046Contact: linux-iio@vger.kernel.org
1047Description:
1048 Event generated when channel passes a threshold on the absolute
1049 change in value. E.g. for steps: a step change event is
1050 generated each time the user takes N steps, where N is set using
1051 in_steps_change_value.
1052
1053What: /sys/.../events/in_steps_change_value
1054KernelVersion: 4.0
1055Contact: linux-iio@vger.kernel.org
1056Description:
1057 Specifies the value of change threshold that the
1058 device is comparing against for the events enabled by
1059 <type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps:
1060 if set to 3, a step change event will be generated every 3
1061 steps.
1062
1063What: /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger
1064KernelVersion: 2.6.35
1065Contact: linux-iio@vger.kernel.org
1066Description:
1067 The name of the trigger source being used, as per string given
1068 in /sys/class/iio/triggerY/name.
1069
1070What: /sys/bus/iio/devices/iio:deviceX/buffer/length
1071KernelVersion: 2.6.35
1072Contact: linux-iio@vger.kernel.org
1073Description:
1074 Number of scans contained by the buffer.
1075
1076What: /sys/bus/iio/devices/iio:deviceX/buffer/enable
1077KernelVersion: 2.6.35
1078Contact: linux-iio@vger.kernel.org
1079Description:
1080 Actually start the buffer capture up. Will start trigger
1081 if first device and appropriate.
1082
1083What: /sys/bus/iio/devices/iio:deviceX/scan_elements
1084KernelVersion: 2.6.37
1085Contact: linux-iio@vger.kernel.org
1086Description:
1087 Directory containing interfaces for elements that will be
1088 captured for a single triggered sample set in the buffer.
1089
1090What: /sys/.../iio:deviceX/scan_elements/in_accel_x_en
1091What: /sys/.../iio:deviceX/scan_elements/in_accel_y_en
1092What: /sys/.../iio:deviceX/scan_elements/in_accel_z_en
1093What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en
1094What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en
1095What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en
1096What: /sys/.../iio:deviceX/scan_elements/in_magn_x_en
1097What: /sys/.../iio:deviceX/scan_elements/in_magn_y_en
1098What: /sys/.../iio:deviceX/scan_elements/in_magn_z_en
1099What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en
1100What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en
1101What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en
1102What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en
1103What: /sys/.../iio:deviceX/scan_elements/in_timestamp_en
1104What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en
1105What: /sys/.../iio:deviceX/scan_elements/in_voltageY_en
1106What: /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
1107What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_en
1108What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_en
1109What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_en
1110What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_en
1111What: /sys/.../iio:deviceX/scan_elements/in_incli_x_en
1112What: /sys/.../iio:deviceX/scan_elements/in_incli_y_en
1113What: /sys/.../iio:deviceX/scan_elements/in_pressureY_en
1114What: /sys/.../iio:deviceX/scan_elements/in_pressure_en
1115What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en
1116What: /sys/.../iio:deviceX/scan_elements/in_proximity_en
1117KernelVersion: 2.6.37
1118Contact: linux-iio@vger.kernel.org
1119Description:
1120 Scan element control for triggered data capture.
1121
1122What: /sys/.../iio:deviceX/scan_elements/in_accel_type
1123What: /sys/.../iio:deviceX/scan_elements/in_anglvel_type
1124What: /sys/.../iio:deviceX/scan_elements/in_magn_type
1125What: /sys/.../iio:deviceX/scan_elements/in_incli_type
1126What: /sys/.../iio:deviceX/scan_elements/in_voltageY_type
1127What: /sys/.../iio:deviceX/scan_elements/in_voltage_type
1128What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type
1129What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_type
1130What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_type
1131What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_type
1132What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_type
1133What: /sys/.../iio:deviceX/scan_elements/in_timestamp_type
1134What: /sys/.../iio:deviceX/scan_elements/in_pressureY_type
1135What: /sys/.../iio:deviceX/scan_elements/in_pressure_type
1136What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type
1137What: /sys/.../iio:deviceX/scan_elements/in_proximity_type
1138KernelVersion: 2.6.37
1139Contact: linux-iio@vger.kernel.org
1140Description:
1141 Description of the scan element data storage within the buffer
1142 and hence the form in which it is read from user-space.
1143 Form is [be|le]:[s|u]bits/storagebits[>>shift].
1144 be or le specifies big or little endian. s or u specifies if
1145 signed (2's complement) or unsigned. bits is the number of bits
1146 of data and storagebits is the space (after padding) that it
1147 occupies in the buffer. shift if specified, is the shift that
1148 needs to be applied prior to masking out unused bits. Some
1149 devices put their data in the middle of the transferred elements
1150 with additional information on both sides. Note that some
1151 devices will have additional information in the unused bits
1152 so to get a clean value, the bits value must be used to mask
1153 the buffer output value appropriately. The storagebits value
1154 also specifies the data alignment. So s48/64>>2 will be a
1155 signed 48 bit integer stored in a 64 bit location aligned to
1156 a 64 bit boundary. To obtain the clean value, shift right 2
1157 and apply a mask to zero the top 16 bits of the result.
1158 For other storage combinations this attribute will be extended
1159 appropriately.
1160
1161What: /sys/.../iio:deviceX/scan_elements/in_accel_type_available
1162KernelVersion: 2.6.37
1163Contact: linux-iio@vger.kernel.org
1164Description:
1165 If the type parameter can take one of a small set of values,
1166 this attribute lists them.
1167
1168What: /sys/.../iio:deviceX/scan_elements/in_voltageY_index
1169What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index
1170What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_index
1171What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_index
1172What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_index
1173What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_index
1174What: /sys/.../iio:deviceX/scan_elements/in_accel_x_index
1175What: /sys/.../iio:deviceX/scan_elements/in_accel_y_index
1176What: /sys/.../iio:deviceX/scan_elements/in_accel_z_index
1177What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index
1178What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index
1179What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index
1180What: /sys/.../iio:deviceX/scan_elements/in_magn_x_index
1181What: /sys/.../iio:deviceX/scan_elements/in_magn_y_index
1182What: /sys/.../iio:deviceX/scan_elements/in_magn_z_index
1183What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index
1184What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index
1185What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index
1186What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index
1187What: /sys/.../iio:deviceX/scan_elements/in_incli_x_index
1188What: /sys/.../iio:deviceX/scan_elements/in_incli_y_index
1189What: /sys/.../iio:deviceX/scan_elements/in_timestamp_index
1190What: /sys/.../iio:deviceX/scan_elements/in_pressureY_index
1191What: /sys/.../iio:deviceX/scan_elements/in_pressure_index
1192What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index
1193What: /sys/.../iio:deviceX/scan_elements/in_proximity_index
1194KernelVersion: 2.6.37
1195Contact: linux-iio@vger.kernel.org
1196Description:
1197 A single positive integer specifying the position of this
1198 scan element in the buffer. Note these are not dependent on
1199 what is enabled and may not be contiguous. Thus for user-space
1200 to establish the full layout these must be used in conjunction
1201 with all _en attributes to establish which channels are present,
1202 and the relevant _type attributes to establish the data storage
1203 format.
1204
1205What: /sys/.../iio:deviceX/in_activity_still_input
1206What: /sys/.../iio:deviceX/in_activity_walking_input
1207What: /sys/.../iio:deviceX/in_activity_jogging_input
1208What: /sys/.../iio:deviceX/in_activity_running_input
1209KernelVersion: 3.19
1210Contact: linux-iio@vger.kernel.org
1211Description:
1212 This attribute is used to read the confidence for an activity
1213 expressed in units as percentage.
1214
1215What: /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw
1216KernelVersion: 2.6.38
1217Contact: linux-iio@vger.kernel.org
1218Description:
1219 This attribute is used to read the amount of quadrature error
1220 present in the device at a given time.
1221
1222What: /sys/.../iio:deviceX/in_accelX_power_mode
1223KernelVersion: 3.11
1224Contact: linux-iio@vger.kernel.org
1225Description:
1226 Specifies the chip power mode.
1227 low_noise: reduce noise level from ADC,
1228 low_power: enable low current consumption.
1229 For a list of available output power modes read
1230 in_accel_power_mode_available.
1231
1232What: /sys/.../iio:deviceX/in_energy_input
1233What: /sys/.../iio:deviceX/in_energy_raw
1234KernelVersion: 4.0
1235Contact: linux-iio@vger.kernel.org
1236Description:
1237 This attribute is used to read the energy value reported by the
1238 device (e.g.: human activity sensors report energy burnt by the
1239 user). Units after application of scale are Joules.
1240
1241What: /sys/.../iio:deviceX/in_distance_input
1242What: /sys/.../iio:deviceX/in_distance_raw
1243KernelVersion: 4.0
1244Contact: linux-iio@vger.kernel.org
1245Description:
1246 This attribute is used to read the measured distance to an object
1247 or the distance covered by the user since the last reboot while
1248 activated. Units after application of scale are meters.
1249
1250What: /sys/bus/iio/devices/iio:deviceX/store_eeprom
1251KernelVersion: 3.4.0
1252Contact: linux-iio@vger.kernel.org
1253Description:
1254 Writing '1' stores the current device configuration into
1255 on-chip EEPROM. After power-up or chip reset the device will
1256 automatically load the saved configuration.
1257
1258What: /sys/.../iio:deviceX/in_proximity_raw
1259What: /sys/.../iio:deviceX/in_proximity_input
1260What: /sys/.../iio:deviceX/in_proximityY_raw
1261KernelVersion: 3.4
1262Contact: linux-iio@vger.kernel.org
1263Description:
1264 Proximity measurement indicating that some
1265 object is near the sensor, usually by observing
1266 reflectivity of infrared or ultrasound emitted.
1267 Often these sensors are unit less and as such conversion
1268 to SI units is not possible. Higher proximity measurements
1269 indicate closer objects, and vice versa. Units after
1270 application of scale and offset are meters.
1271
1272What: /sys/.../iio:deviceX/in_illuminance_input
1273What: /sys/.../iio:deviceX/in_illuminance_raw
1274What: /sys/.../iio:deviceX/in_illuminanceY_input
1275What: /sys/.../iio:deviceX/in_illuminanceY_raw
1276What: /sys/.../iio:deviceX/in_illuminanceY_mean_raw
1277What: /sys/.../iio:deviceX/in_illuminance_ir_raw
1278What: /sys/.../iio:deviceX/in_illuminance_clear_raw
1279KernelVersion: 3.4
1280Contact: linux-iio@vger.kernel.org
1281Description:
1282 Illuminance measurement, units after application of scale
1283 and offset are lux.
1284
1285What: /sys/.../iio:deviceX/in_intensityY_raw
1286What: /sys/.../iio:deviceX/in_intensityY_ir_raw
1287What: /sys/.../iio:deviceX/in_intensityY_both_raw
1288What: /sys/.../iio:deviceX/in_intensityY_uv_raw
1289KernelVersion: 3.4
1290Contact: linux-iio@vger.kernel.org
1291Description:
1292 Unit-less light intensity. Modifiers both and ir indicate
1293 that measurements contain visible and infrared light
1294 components or just infrared light, respectively. Modifier uv indicates
1295 that measurements contain ultraviolet light components.
1296
1297What: /sys/.../iio:deviceX/in_uvindex_input
1298KernelVersion: 4.6
1299Contact: linux-iio@vger.kernel.org
1300Description:
1301 UV light intensity index measuring the human skin's response to
1302 different wavelength of sunlight weighted according to the
1303 standardised CIE Erythemal Action Spectrum. UV index values range
1304 from 0 (low) to >=11 (extreme).
1305
1306What: /sys/.../iio:deviceX/in_intensity_red_integration_time
1307What: /sys/.../iio:deviceX/in_intensity_green_integration_time
1308What: /sys/.../iio:deviceX/in_intensity_blue_integration_time
1309What: /sys/.../iio:deviceX/in_intensity_clear_integration_time
1310What: /sys/.../iio:deviceX/in_illuminance_integration_time
1311KernelVersion: 3.12
1312Contact: linux-iio@vger.kernel.org
1313Description:
1314 This attribute is used to get/set the integration time in
1315 seconds.
1316
1317What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time
1318KernelVersion: 4.0
1319Contact: linux-iio@vger.kernel.org
1320Description:
1321 Number of seconds in which to compute speed.
1322
1323What: /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw
1324KernelVersion: 3.15
1325Contact: linux-iio@vger.kernel.org
1326Description:
1327 Raw value of quaternion components using a format
1328 x y z w. Here x, y, and z component represents the axis about
1329 which a rotation will occur and w component represents the
1330 amount of rotation.
1331
1332What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw
1333What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw
1334What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw
1335What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw
1336KernelVersion: 3.15
1337Contact: linux-iio@vger.kernel.org
1338Description:
1339 Raw value of rotation from true/magnetic north measured with
1340 or without compensation from tilt sensors.
1341
1342What: /sys/bus/iio/devices/iio:deviceX/in_currentX_raw
1343What: /sys/bus/iio/devices/iio:deviceX/in_currentX_i_raw
1344What: /sys/bus/iio/devices/iio:deviceX/in_currentX_q_raw
1345KernelVersion: 3.18
1346Contact: linux-iio@vger.kernel.org
1347Description:
1348 Raw current measurement from channel X. Units are in milliamps
1349 after application of scale and offset. If no offset or scale is
1350 present, output should be considered as processed with the
1351 unit in milliamps.
1352
1353 Channels with 'i' and 'q' modifiers always exist in pairs and both
1354 channels refer to the same signal. The 'i' channel contains the in-phase
1355 component of the signal while the 'q' channel contains the quadrature
1356 component.
1357
1358What: /sys/.../iio:deviceX/in_energy_en
1359What: /sys/.../iio:deviceX/in_distance_en
1360What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en
1361What: /sys/.../iio:deviceX/in_steps_en
1362KernelVersion: 3.19
1363Contact: linux-iio@vger.kernel.org
1364Description:
1365 Activates a device feature that runs in firmware/hardware.
1366 E.g. for steps: the pedometer saves power while not used;
1367 when activated, it will count the steps taken by the user in
1368 firmware and export them through in_steps_input.
1369
1370What: /sys/.../iio:deviceX/in_steps_input
1371KernelVersion: 3.19
1372Contact: linux-iio@vger.kernel.org
1373Description:
1374 This attribute is used to read the number of steps taken by the user
1375 since the last reboot while activated.
1376
1377What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input
1378What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw
1379KernelVersion: 3.19
1380Contact: linux-iio@vger.kernel.org
1381Description:
1382 This attribute is used to read the current speed value of the
1383 user (which is the norm or magnitude of the velocity vector).
1384 Units after application of scale are m/s.
1385
1386What: /sys/.../iio:deviceX/in_steps_debounce_count
1387KernelVersion: 4.0
1388Contact: linux-iio@vger.kernel.org
1389Description:
1390 Specifies the number of steps that must occur within
1391 in_steps_filter_debounce_time for the pedometer to decide the
1392 consumer is making steps.
1393
1394What: /sys/.../iio:deviceX/in_steps_debounce_time
1395KernelVersion: 4.0
1396Contact: linux-iio@vger.kernel.org
1397Description:
1398 Specifies number of seconds in which we compute the steps
1399 that occur in order to decide if the consumer is making steps.
1400
1401What: /sys/bus/iio/devices/iio:deviceX/buffer/watermark
1402KernelVersion: 4.2
1403Contact: linux-iio@vger.kernel.org
1404Description:
1405 A single positive integer specifying the maximum number of scan
1406 elements to wait for.
1407 Poll will block until the watermark is reached.
1408 Blocking read will wait until the minimum between the requested
1409 read amount or the low water mark is available.
1410 Non-blocking read will retrieve the available samples from the
1411 buffer even if there are less samples then watermark level. This
1412 allows the application to block on poll with a timeout and read
1413 the available samples after the timeout expires and thus have a
1414 maximum delay guarantee.
1415
1416What: /sys/bus/iio/devices/iio:deviceX/buffer/data_available
1417KernelVersion: 4.16
1418Contact: linux-iio@vger.kernel.org
1419Description:
1420 A read-only value indicating the bytes of data available in the
1421 buffer. In the case of an output buffer, this indicates the
1422 amount of empty space available to write data to. In the case of
1423 an input buffer, this indicates the amount of data available for
1424 reading.
1425
1426What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled
1427KernelVersion: 4.2
1428Contact: linux-iio@vger.kernel.org
1429Description:
1430 A read-only boolean value that indicates if the hardware fifo is
1431 currently enabled or disabled. If the device does not have a
1432 hardware fifo this entry is not present.
1433 The hardware fifo is enabled when the buffer is enabled if the
1434 current hardware fifo watermark level is set and other current
1435 device settings allows it (e.g. if a trigger is set that samples
1436 data differently that the hardware fifo does then hardware fifo
1437 will not enabled).
1438 If the hardware fifo is enabled and the level of the hardware
1439 fifo reaches the hardware fifo watermark level the device will
1440 flush its hardware fifo to the device buffer. Doing a non
1441 blocking read on the device when no samples are present in the
1442 device buffer will also force a flush.
1443 When the hardware fifo is enabled there is no need to use a
1444 trigger to use buffer mode since the watermark settings
1445 guarantees that the hardware fifo is flushed to the device
1446 buffer.
1447
1448What: /sys/bus/iio/devices/iio:device*/buffer/hwfifo_timeout
1449KernelVersion: 4.12
1450Contact: linux-iio@vger.kernel.org
1451Description:
1452 A read/write property to provide capability to delay reporting of
1453 samples till a timeout is reached. This allows host processors to
1454 sleep, while the sensor is storing samples in its internal fifo.
1455 The maximum timeout in seconds can be specified by setting
1456 hwfifo_timeout.The current delay can be read by reading
1457 hwfifo_timeout. A value of 0 means that there is no timeout.
1458
1459What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark
1460KernelVersion: 4.2
1461Contact: linux-iio@vger.kernel.org
1462Description:
1463 Read-only entry that contains a single integer specifying the
1464 current watermark level for the hardware fifo. If the device
1465 does not have a hardware fifo this entry is not present.
1466 The watermark level for the hardware fifo is set by the driver
1467 based on the value set by the user in buffer/watermark but
1468 taking into account hardware limitations (e.g. most hardware
1469 buffers are limited to 32-64 samples, some hardware buffers
1470 watermarks are fixed or have minimum levels). A value of 0
1471 means that the hardware watermark is unset.
1472
1473What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_min
1474KernelVersion: 4.2
1475Contact: linux-iio@vger.kernel.org
1476Description:
1477 A single positive integer specifying the minimum watermark level
1478 for the hardware fifo of this device. If the device does not
1479 have a hardware fifo this entry is not present.
1480 If the user sets buffer/watermark to a value less than this one,
1481 then the hardware watermark will remain unset.
1482
1483What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_max
1484KernelVersion: 4.2
1485Contact: linux-iio@vger.kernel.org
1486Description:
1487 A single positive integer specifying the maximum watermark level
1488 for the hardware fifo of this device. If the device does not
1489 have a hardware fifo this entry is not present.
1490 If the user sets buffer/watermark to a value greater than this
1491 one, then the hardware watermark will be capped at this value.
1492
1493What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_available
1494KernelVersion: 4.2
1495Contact: linux-iio@vger.kernel.org
1496Description:
1497 A list of positive integers specifying the available watermark
1498 levels for the hardware fifo. This entry is optional and if it
1499 is not present it means that all the values between
1500 hwfifo_watermark_min and hwfifo_watermark_max are supported.
1501 If the user sets buffer/watermark to a value greater than
1502 hwfifo_watermak_min but not equal to any of the values in this
1503 list, the driver will chose an appropriate value for the
1504 hardware fifo watermark level.
1505
1506What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibemissivity
1507What: /sys/bus/iio/devices/iio:deviceX/in_tempX_calibemissivity
1508What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibemissivity
1509What: /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibemissivity
1510KernelVersion: 4.1
1511Contact: linux-iio@vger.kernel.org
1512Description:
1513 The emissivity ratio of the surface in the field of view of the
1514 contactless temperature sensor. Emissivity varies from 0 to 1,
1515 with 1 being the emissivity of a black body.
1516
1517What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_oversampling_ratio
1518What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_oversampling_ratio
1519What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_oversampling_ratio
1520KernelVersion: 4.2
1521Contact: linux-iio@vger.kernel.org
1522Description:
1523 Hardware applied number of measurements for acquiring one
1524 data point. The HW will do <type>[_name]_oversampling_ratio
1525 measurements and return the average value as output data. Each
1526 value resulted from <type>[_name]_oversampling_ratio measurements
1527 is considered as one sample for <type>[_name]_sampling_frequency.
1528
1529What: /sys/bus/iio/devices/iio:deviceX/in_concentration_raw
1530What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_raw
1531What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw
1532What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_co2_raw
1533What: /sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw
1534What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw
1535KernelVersion: 4.3
1536Contact: linux-iio@vger.kernel.org
1537Description:
1538 Raw (unscaled no offset etc.) percentage reading of a substance.
1539
1540What: /sys/bus/iio/devices/iio:deviceX/in_resistance_raw
1541What: /sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw
1542What: /sys/bus/iio/devices/iio:deviceX/out_resistance_raw
1543What: /sys/bus/iio/devices/iio:deviceX/out_resistanceX_raw
1544KernelVersion: 4.3
1545Contact: linux-iio@vger.kernel.org
1546Description:
1547 Raw (unscaled no offset etc.) resistance reading that can be processed
1548 into an ohm value.
1549
1550What: /sys/bus/iio/devices/iio:deviceX/heater_enable
1551KernelVersion: 4.1.0
1552Contact: linux-iio@vger.kernel.org
1553Description:
1554 '1' (enable) or '0' (disable) specifying the enable
1555 of heater function. Same reading values apply
1556 This ABI is especially applicable for humidity sensors
1557 to heatup the device and get rid of any condensation
1558 in some humidity environment
1559
1560What: /sys/bus/iio/devices/iio:deviceX/in_ph_raw
1561KernelVersion: 4.5
1562Contact: linux-iio@vger.kernel.org
1563Description:
1564 Raw (unscaled no offset etc.) pH reading of a substance as a negative
1565 base-10 logarithm of hydrodium ions in a litre of water.
1566
1567What: /sys/bus/iio/devices/iio:deviceX/mount_matrix
1568What: /sys/bus/iio/devices/iio:deviceX/in_mount_matrix
1569What: /sys/bus/iio/devices/iio:deviceX/out_mount_matrix
1570What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_mount_matrix
1571What: /sys/bus/iio/devices/iio:deviceX/in_accel_mount_matrix
1572KernelVersion: 4.6
1573Contact: linux-iio@vger.kernel.org
1574Description:
1575 Mounting matrix for IIO sensors. This is a rotation matrix which
1576 informs userspace about sensor chip's placement relative to the
1577 main hardware it is mounted on.
1578 Main hardware placement is defined according to the local
1579 reference frame related to the physical quantity the sensor
1580 measures.
1581 Given that the rotation matrix is defined in a board specific
1582 way (platform data and / or device-tree), the main hardware
1583 reference frame definition is left to the implementor's choice
1584 (see below for a magnetometer example).
1585 Applications should apply this rotation matrix to samples so
1586 that when main hardware reference frame is aligned onto local
1587 reference frame, then sensor chip reference frame is also
1588 perfectly aligned with it.
1589 Matrix is a 3x3 unitary matrix and typically looks like
1590 [0, 1, 0; 1, 0, 0; 0, 0, -1]. Identity matrix
1591 [1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and main hardware
1592 are perfectly aligned with each other.
1593
1594 For example, a mounting matrix for a magnetometer sensor informs
1595 userspace about sensor chip's ORIENTATION relative to the main
1596 hardware.
1597 More specifically, main hardware orientation is defined with
1598 respect to the LOCAL EARTH GEOMAGNETIC REFERENCE FRAME where :
1599 * Y is in the ground plane and positive towards magnetic North ;
1600 * X is in the ground plane, perpendicular to the North axis and
1601 positive towards the East ;
1602 * Z is perpendicular to the ground plane and positive upwards.
1603
1604 An implementor might consider that for a hand-held device, a
1605 'natural' orientation would be 'front facing camera at the top'.
1606 The main hardware reference frame could then be described as :
1607 * Y is in the plane of the screen and is positive towards the
1608 top of the screen ;
1609 * X is in the plane of the screen, perpendicular to Y axis, and
1610 positive towards the right hand side of the screen ;
1611 * Z is perpendicular to the screen plane and positive out of the
1612 screen.
1613 Another example for a quadrotor UAV might be :
1614 * Y is in the plane of the propellers and positive towards the
1615 front-view camera;
1616 * X is in the plane of the propellers, perpendicular to Y axis,
1617 and positive towards the starboard side of the UAV ;
1618 * Z is perpendicular to propellers plane and positive upwards.
1619
1620What: /sys/bus/iio/devices/iio:deviceX/in_electricalconductivity_raw
1621KernelVersion: 4.8
1622Contact: linux-iio@vger.kernel.org
1623Description:
1624 Raw (unscaled no offset etc.) electric conductivity reading that
1625 can be processed to siemens per meter.
1626
1627What: /sys/bus/iio/devices/iio:deviceX/in_countY_raw
1628KernelVersion: 4.10
1629Contact: linux-iio@vger.kernel.org
1630Description:
1631 Raw counter device counts from channel Y. For quadrature
1632 counters, multiplication by an available [Y]_scale results in
1633 the counts of a single quadrature signal phase from channel Y.
1634
1635What: /sys/bus/iio/devices/iio:deviceX/in_indexY_raw
1636KernelVersion: 4.10
1637Contact: linux-iio@vger.kernel.org
1638Description:
1639 Raw counter device index value from channel Y. This attribute
1640 provides an absolute positional reference (e.g. a pulse once per
1641 revolution) which may be used to home positional systems as
1642 required.
1643
1644What: /sys/bus/iio/devices/iio:deviceX/in_count_count_direction_available
1645KernelVersion: 4.12
1646Contact: linux-iio@vger.kernel.org
1647Description:
1648 A list of possible counting directions which are:
1649 - "up" : counter device is increasing.
1650 - "down": counter device is decreasing.
1651
1652What: /sys/bus/iio/devices/iio:deviceX/in_countY_count_direction
1653KernelVersion: 4.12
1654Contact: linux-iio@vger.kernel.org
1655Description:
1656 Raw counter device counters direction for channel Y.