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1What: /sys/bus/counter/devices/counterX/countY/count
2KernelVersion: 5.2
3Contact: linux-iio@vger.kernel.org
4Description:
5 Count data of Count Y represented as a string.
6
7What: /sys/bus/counter/devices/counterX/countY/capture
8KernelVersion: 6.1
9Contact: linux-iio@vger.kernel.org
10Description:
11 Historical capture of the Count Y count data.
12
13What: /sys/bus/counter/devices/counterX/countY/ceiling
14KernelVersion: 5.2
15Contact: linux-iio@vger.kernel.org
16Description:
17 Count value ceiling for Count Y. This is the upper limit for the
18 respective counter.
19
20What: /sys/bus/counter/devices/counterX/countY/floor
21KernelVersion: 5.2
22Contact: linux-iio@vger.kernel.org
23Description:
24 Count value floor for Count Y. This is the lower limit for the
25 respective counter.
26
27What: /sys/bus/counter/devices/counterX/countY/count_mode
28KernelVersion: 5.2
29Contact: linux-iio@vger.kernel.org
30Description:
31 Count mode for channel Y. The ceiling and floor values for
32 Count Y are used by the count mode where required. The following
33 count modes are available:
34
35 normal:
36 Counting is continuous in either direction.
37
38 range limit:
39 An upper or lower limit is set, mimicking limit switches
40 in the mechanical counterpart. The upper limit is set to
41 the Count Y ceiling value, while the lower limit is set
42 to the Count Y floor value. The counter freezes at
43 count = ceiling when counting up, and at count = floor
44 when counting down. At either of these limits, the
45 counting is resumed only when the count direction is
46 reversed.
47
48 non-recycle:
49 The counter is disabled whenever a counter overflow or
50 underflow takes place. The counter is re-enabled when a
51 new count value is loaded to the counter via a preset
52 operation or direct write.
53
54 modulo-n:
55 A count value boundary is set between the Count Y floor
56 value and the Count Y ceiling value. The counter is
57 reset to the Count Y floor value at count = ceiling when
58 counting up, while the counter is set to the Count Y
59 ceiling value at count = floor when counting down; the
60 counter does not freeze at the boundary points, but
61 counts continuously throughout.
62
63What: /sys/bus/counter/devices/counterX/countY/count_mode_available
64What: /sys/bus/counter/devices/counterX/countY/error_noise_available
65What: /sys/bus/counter/devices/counterX/countY/function_available
66What: /sys/bus/counter/devices/counterX/countY/prescaler_available
67What: /sys/bus/counter/devices/counterX/countY/signalZ_action_available
68KernelVersion: 5.2
69Contact: linux-iio@vger.kernel.org
70Description:
71 Discrete set of available values for the respective Count Y
72 configuration are listed in this file. Values are delimited by
73 newline characters.
74
75What: /sys/bus/counter/devices/counterX/countY/direction
76KernelVersion: 5.2
77Contact: linux-iio@vger.kernel.org
78Description:
79 Read-only attribute that indicates the count direction of Count
80 Y. Two count directions are available: forward and backward.
81
82 Some counter devices are able to determine the direction of
83 their counting. For example, quadrature encoding counters can
84 determine the direction of movement by evaluating the leading
85 phase of the respective A and B quadrature encoding signals.
86 This attribute exposes such count directions.
87
88What: /sys/bus/counter/devices/counterX/countY/enable
89KernelVersion: 5.2
90Contact: linux-iio@vger.kernel.org
91Description:
92 Whether channel Y counter is enabled. Valid attribute values are
93 boolean.
94
95 This attribute is intended to serve as a pause/unpause mechanism
96 for Count Y. Suppose a counter device is used to count the total
97 movement of a conveyor belt: this attribute allows an operator
98 to temporarily pause the counter, service the conveyor belt,
99 and then finally unpause the counter to continue where it had
100 left off.
101
102What: /sys/bus/counter/devices/counterX/countY/error_noise
103KernelVersion: 5.2
104Contact: linux-iio@vger.kernel.org
105Description:
106 Read-only attribute that indicates whether excessive noise is
107 present at the channel Y counter inputs.
108
109What: /sys/bus/counter/devices/counterX/countY/function
110KernelVersion: 5.2
111Contact: linux-iio@vger.kernel.org
112Description:
113 Count function mode of Count Y; count function evaluation is
114 triggered by conditions specified by the Count Y signalZ_action
115 attributes. The following count functions are available:
116
117 increase:
118 Accumulated count is incremented.
119
120 decrease:
121 Accumulated count is decremented.
122
123 pulse-direction:
124 Rising edges on signal A updates the respective count.
125 The input level of signal B determines direction.
126
127 quadrature x1 a:
128 If direction is forward, rising edges on quadrature pair
129 signal A updates the respective count; if the direction
130 is backward, falling edges on quadrature pair signal A
131 updates the respective count. Quadrature encoding
132 determines the direction.
133
134 quadrature x1 b:
135 If direction is forward, rising edges on quadrature pair
136 signal B updates the respective count; if the direction
137 is backward, falling edges on quadrature pair signal B
138 updates the respective count. Quadrature encoding
139 determines the direction.
140
141 quadrature x2 a:
142 Any state transition on quadrature pair signal A updates
143 the respective count. Quadrature encoding determines the
144 direction.
145
146 quadrature x2 b:
147 Any state transition on quadrature pair signal B updates
148 the respective count. Quadrature encoding determines the
149 direction.
150
151 quadrature x4:
152 Any state transition on either quadrature pair signals
153 updates the respective count. Quadrature encoding
154 determines the direction.
155
156What: /sys/bus/counter/devices/counterX/countY/name
157KernelVersion: 5.2
158Contact: linux-iio@vger.kernel.org
159Description:
160 Read-only attribute that indicates the device-specific name of
161 Count Y. If possible, this should match the name of the
162 respective channel as it appears in the device datasheet.
163
164What: /sys/bus/counter/devices/counterX/countY/prescaler
165KernelVersion: 5.2
166Contact: linux-iio@vger.kernel.org
167Description:
168 Configure the prescaler value associated with Count Y.
169 On the FlexTimer, the counter clock source passes through a
170 prescaler (i.e. a counter). This acts like a clock
171 divider.
172
173What: /sys/bus/counter/devices/counterX/countY/preset
174KernelVersion: 5.2
175Contact: linux-iio@vger.kernel.org
176Description:
177 If the counter device supports preset registers -- registers
178 used to load counter channels to a set count upon device-defined
179 preset operation trigger events -- the preset count for channel
180 Y is provided by this attribute.
181
182What: /sys/bus/counter/devices/counterX/countY/preset_enable
183KernelVersion: 5.2
184Contact: linux-iio@vger.kernel.org
185Description:
186 Whether channel Y counter preset operation is enabled. Valid
187 attribute values are boolean.
188
189What: /sys/bus/counter/devices/counterX/countY/signalZ_action
190KernelVersion: 5.2
191Contact: linux-iio@vger.kernel.org
192Description:
193 Action mode of Count Y for Signal Z. This attribute indicates
194 the condition of Signal Z that triggers the count function
195 evaluation for Count Y. The following action modes are
196 available:
197
198 none:
199 Signal does not trigger the count function. In
200 Pulse-Direction count function mode, this Signal is
201 evaluated as Direction.
202
203 rising edge:
204 Low state transitions to high state.
205
206 falling edge:
207 High state transitions to low state.
208
209 both edges:
210 Any state transition.
211
212What: /sys/bus/counter/devices/counterX/countY/num_overflows
213KernelVersion: 6.1
214Contact: linux-iio@vger.kernel.org
215Description:
216 This attribute indicates the number of overflows of count Y.
217
218What: /sys/bus/counter/devices/counterX/countY/capture_component_id
219What: /sys/bus/counter/devices/counterX/countY/ceiling_component_id
220What: /sys/bus/counter/devices/counterX/countY/floor_component_id
221What: /sys/bus/counter/devices/counterX/countY/count_mode_component_id
222What: /sys/bus/counter/devices/counterX/countY/direction_component_id
223What: /sys/bus/counter/devices/counterX/countY/enable_component_id
224What: /sys/bus/counter/devices/counterX/countY/error_noise_component_id
225What: /sys/bus/counter/devices/counterX/countY/prescaler_component_id
226What: /sys/bus/counter/devices/counterX/countY/preset_component_id
227What: /sys/bus/counter/devices/counterX/countY/preset_enable_component_id
228What: /sys/bus/counter/devices/counterX/countY/signalZ_action_component_id
229What: /sys/bus/counter/devices/counterX/countY/num_overflows_component_id
230What: /sys/bus/counter/devices/counterX/signalY/cable_fault_component_id
231What: /sys/bus/counter/devices/counterX/signalY/cable_fault_enable_component_id
232What: /sys/bus/counter/devices/counterX/signalY/filter_clock_prescaler_component_id
233What: /sys/bus/counter/devices/counterX/signalY/index_polarity_component_id
234What: /sys/bus/counter/devices/counterX/signalY/polarity_component_id
235What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode_component_id
236What: /sys/bus/counter/devices/counterX/signalY/frequency_component_id
237KernelVersion: 5.16
238Contact: linux-iio@vger.kernel.org
239Description:
240 Read-only attribute that indicates the component ID of the
241 respective extension or Synapse.
242
243What: /sys/bus/counter/devices/counterX/countY/spike_filter_ns
244KernelVersion: 5.14
245Contact: linux-iio@vger.kernel.org
246Description:
247 If the counter device supports programmable spike filter this
248 attribute indicates the value in nanoseconds where noise pulses
249 shorter or equal to configured value are ignored. Value 0 means
250 filter is disabled.
251
252What: /sys/bus/counter/devices/counterX/events_queue_size
253KernelVersion: 5.16
254Contact: linux-iio@vger.kernel.org
255Description:
256 Size of the Counter events queue in number of struct
257 counter_event data structures. The number of elements will be
258 rounded-up to a power of 2.
259
260What: /sys/bus/counter/devices/counterX/name
261KernelVersion: 5.2
262Contact: linux-iio@vger.kernel.org
263Description:
264 Read-only attribute that indicates the device-specific name of
265 the Counter. This should match the name of the device as it
266 appears in its respective datasheet.
267
268What: /sys/bus/counter/devices/counterX/num_counts
269KernelVersion: 5.2
270Contact: linux-iio@vger.kernel.org
271Description:
272 Read-only attribute that indicates the total number of Counts
273 belonging to the Counter.
274
275What: /sys/bus/counter/devices/counterX/num_signals
276KernelVersion: 5.2
277Contact: linux-iio@vger.kernel.org
278Description:
279 Read-only attribute that indicates the total number of Signals
280 belonging to the Counter.
281
282What: /sys/bus/counter/devices/counterX/signalY/cable_fault
283KernelVersion: 5.7
284Contact: linux-iio@vger.kernel.org
285Description:
286 Read-only attribute that indicates whether a differential
287 encoder cable fault (not connected or loose wires) is detected
288 for the respective channel of Signal Y. Valid attribute values
289 are boolean. Detection must first be enabled via the
290 corresponding cable_fault_enable attribute.
291
292What: /sys/bus/counter/devices/counterX/signalY/cable_fault_enable
293KernelVersion: 5.7
294Contact: linux-iio@vger.kernel.org
295Description:
296 Whether detection of differential encoder cable faults for the
297 respective channel of Signal Y is enabled. Valid attribute
298 values are boolean.
299
300What: /sys/bus/counter/devices/counterX/signalY/filter_clock_prescaler
301KernelVersion: 5.7
302Contact: linux-iio@vger.kernel.org
303Description:
304 Filter clock factor for input Signal Y. This prescaler value
305 affects the inputs of both quadrature pair signals.
306
307What: /sys/bus/counter/devices/counterX/signalY/index_polarity
308KernelVersion: 5.2
309Contact: linux-iio@vger.kernel.org
310Description:
311 Active level of index input Signal Y; irrelevant in
312 non-synchronous load mode.
313
314What: /sys/bus/counter/devices/counterX/signalY/index_polarity_available
315What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode_available
316KernelVersion: 5.2
317Contact: linux-iio@vger.kernel.org
318Description:
319 Discrete set of available values for the respective Signal Y
320 configuration are listed in this file.
321
322What: /sys/bus/counter/devices/counterX/signalY/polarity
323KernelVersion: 6.1
324Contact: linux-iio@vger.kernel.org
325Description:
326 Active level of Signal Y. The following polarity values are
327 available:
328
329 positive:
330 Signal high state considered active level (rising edge).
331
332 negative:
333 Signal low state considered active level (falling edge).
334
335What: /sys/bus/counter/devices/counterX/signalY/name
336KernelVersion: 5.2
337Contact: linux-iio@vger.kernel.org
338Description:
339 Read-only attribute that indicates the device-specific name of
340 Signal Y. If possible, this should match the name of the
341 respective signal as it appears in the device datasheet.
342
343What: /sys/bus/counter/devices/counterX/signalY/signal
344KernelVersion: 5.2
345Contact: linux-iio@vger.kernel.org
346Description:
347 Signal level state of Signal Y. The following signal level
348 states are available:
349
350 low:
351 Low level state.
352
353 high:
354 High level state.
355
356What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode
357KernelVersion: 5.2
358Contact: linux-iio@vger.kernel.org
359Description:
360 Configure the counter associated with Signal Y for
361 non-synchronous or synchronous load mode. Synchronous load mode
362 cannot be selected in non-quadrature (Pulse-Direction) clock
363 mode.
364
365 non-synchronous:
366 A logic low level is the active level at this index
367 input. The index function (as enabled via preset_enable)
368 is performed directly on the active level of the index
369 input.
370
371 synchronous:
372 Intended for interfacing with encoder Index output in
373 quadrature clock mode. The active level is configured
374 via index_polarity. The index function (as enabled via
375 preset_enable) is performed synchronously with the
376 quadrature clock on the active level of the index input.
377
378What: /sys/bus/counter/devices/counterX/signalY/frequency
379KernelVersion: 6.1
380Contact: linux-iio@vger.kernel.org
381Description:
382 Read-only attribute that indicates the signal Y frequency, in Hz.
1What: /sys/bus/counter/devices/counterX/cascade_counts_enable
2KernelVersion: 6.4
3Contact: linux-iio@vger.kernel.org
4Description:
5 Indicates the cascading of Counts on Counter X.
6
7 Valid attribute values are boolean.
8
9What: /sys/bus/counter/devices/counterX/external_input_phase_clock_select
10KernelVersion: 6.4
11Contact: linux-iio@vger.kernel.org
12Description:
13 Selects the external clock pin for phase counting mode of
14 Counter X.
15
16 MTCLKA-MTCLKB:
17 MTCLKA and MTCLKB pins are selected for the external
18 phase clock.
19
20 MTCLKC-MTCLKD:
21 MTCLKC and MTCLKD pins are selected for the external
22 phase clock.
23
24What: /sys/bus/counter/devices/counterX/external_input_phase_clock_select_available
25KernelVersion: 6.4
26Contact: linux-iio@vger.kernel.org
27Description:
28 Discrete set of available values for the respective device
29 configuration are listed in this file.
30
31What: /sys/bus/counter/devices/counterX/countY/count
32KernelVersion: 5.2
33Contact: linux-iio@vger.kernel.org
34Description:
35 Count data of Count Y represented as a string.
36
37What: /sys/bus/counter/devices/counterX/countY/capture
38KernelVersion: 6.1
39Contact: linux-iio@vger.kernel.org
40Description:
41 Historical capture of the Count Y count data.
42
43What: /sys/bus/counter/devices/counterX/countY/ceiling
44KernelVersion: 5.2
45Contact: linux-iio@vger.kernel.org
46Description:
47 Count value ceiling for Count Y. This is the upper limit for the
48 respective counter.
49
50What: /sys/bus/counter/devices/counterX/countY/floor
51KernelVersion: 5.2
52Contact: linux-iio@vger.kernel.org
53Description:
54 Count value floor for Count Y. This is the lower limit for the
55 respective counter.
56
57What: /sys/bus/counter/devices/counterX/countY/count_mode
58KernelVersion: 5.2
59Contact: linux-iio@vger.kernel.org
60Description:
61 Count mode for channel Y. The ceiling and floor values for
62 Count Y are used by the count mode where required. The following
63 count modes are available:
64
65 normal:
66 Counting is continuous in either direction.
67
68 range limit:
69 An upper or lower limit is set, mimicking limit switches
70 in the mechanical counterpart. The upper limit is set to
71 the Count Y ceiling value, while the lower limit is set
72 to the Count Y floor value. The counter freezes at
73 count = ceiling when counting up, and at count = floor
74 when counting down. At either of these limits, the
75 counting is resumed only when the count direction is
76 reversed.
77
78 non-recycle:
79 The counter is disabled whenever a counter overflow or
80 underflow takes place. The counter is re-enabled when a
81 new count value is loaded to the counter via a preset
82 operation or direct write.
83
84 modulo-n:
85 A count value boundary is set between the Count Y floor
86 value and the Count Y ceiling value. The counter is
87 reset to the Count Y floor value at count = ceiling when
88 counting up, while the counter is set to the Count Y
89 ceiling value at count = floor when counting down; the
90 counter does not freeze at the boundary points, but
91 counts continuously throughout.
92
93 interrupt on terminal count:
94 The output signal is initially low, and will remain low
95 until the counter reaches zero. The output signal then
96 goes high and remains high until a new preset value is
97 set.
98
99 hardware retriggerable one-shot:
100 The output signal is initially high. The output signal
101 will go low by a trigger input signal, and will remain
102 low until the counter reaches zero. The output will then
103 go high and remain high until the next trigger. A
104 trigger results in loading the counter to the preset
105 value and setting the output signal low, thus starting
106 the one-shot pulse.
107
108 rate generator:
109 The output signal is initially high. When the counter
110 has decremented to 1, the output signal goes low for one
111 clock pulse. The output signal then goes high again, the
112 counter is reloaded to the preset value, and the process
113 repeats in a periodic manner as such.
114
115 square wave mode:
116 The output signal is initially high.
117
118 If the initial count is even, the counter is decremented
119 by two on succeeding clock pulses. When the count
120 expires, the output signal changes value and the
121 counter is reloaded to the preset value. The process
122 repeats in periodic manner as such.
123
124 If the initial count is odd, the initial count minus one
125 (an even number) is loaded and then is decremented by
126 two on succeeding clock pulses. One clock pulse after
127 the count expires, the output signal goes low and the
128 counter is reloaded to the preset value minus one.
129 Succeeding clock pulses decrement the count by two. When
130 the count expires, the output goes high again and the
131 counter is reloaded to the preset value minus one. The
132 process repeats in a periodic manner as such.
133
134 software triggered strobe:
135 The output signal is initially high. When the count
136 expires, the output will go low for one clock pulse and
137 then go high again. The counting sequence is "triggered"
138 by setting the preset value.
139
140 hardware triggered strobe:
141 The output signal is initially high. Counting is started
142 by a trigger input signal. When the count expires, the
143 output signal will go low for one clock pulse and then
144 go high again. A trigger results in loading the counter
145 to the preset value.
146
147What: /sys/bus/counter/devices/counterX/countY/count_mode_available
148What: /sys/bus/counter/devices/counterX/countY/error_noise_available
149What: /sys/bus/counter/devices/counterX/countY/function_available
150What: /sys/bus/counter/devices/counterX/countY/prescaler_available
151What: /sys/bus/counter/devices/counterX/countY/signalZ_action_available
152KernelVersion: 5.2
153Contact: linux-iio@vger.kernel.org
154Description:
155 Discrete set of available values for the respective Count Y
156 configuration are listed in this file. Values are delimited by
157 newline characters.
158
159What: /sys/bus/counter/devices/counterX/countY/direction
160KernelVersion: 5.2
161Contact: linux-iio@vger.kernel.org
162Description:
163 Read-only attribute that indicates the count direction of Count
164 Y. Two count directions are available: forward and backward.
165
166 Some counter devices are able to determine the direction of
167 their counting. For example, quadrature encoding counters can
168 determine the direction of movement by evaluating the leading
169 phase of the respective A and B quadrature encoding signals.
170 This attribute exposes such count directions.
171
172What: /sys/bus/counter/devices/counterX/countY/enable
173KernelVersion: 5.2
174Contact: linux-iio@vger.kernel.org
175Description:
176 Whether channel Y counter is enabled. Valid attribute values are
177 boolean.
178
179 This attribute is intended to serve as a pause/unpause mechanism
180 for Count Y. Suppose a counter device is used to count the total
181 movement of a conveyor belt: this attribute allows an operator
182 to temporarily pause the counter, service the conveyor belt,
183 and then finally unpause the counter to continue where it had
184 left off.
185
186What: /sys/bus/counter/devices/counterX/countY/error_noise
187KernelVersion: 5.2
188Contact: linux-iio@vger.kernel.org
189Description:
190 Read-only attribute that indicates whether excessive noise is
191 present at the channel Y counter inputs.
192
193What: /sys/bus/counter/devices/counterX/countY/function
194KernelVersion: 5.2
195Contact: linux-iio@vger.kernel.org
196Description:
197 Count function mode of Count Y; count function evaluation is
198 triggered by conditions specified by the Count Y signalZ_action
199 attributes. The following count functions are available:
200
201 increase:
202 Accumulated count is incremented.
203
204 decrease:
205 Accumulated count is decremented.
206
207 pulse-direction:
208 Rising edges on signal A updates the respective count.
209 The input level of signal B determines direction.
210
211 quadrature x1 a:
212 If direction is forward, rising edges on quadrature pair
213 signal A updates the respective count; if the direction
214 is backward, falling edges on quadrature pair signal A
215 updates the respective count. Quadrature encoding
216 determines the direction.
217
218 quadrature x1 b:
219 If direction is forward, rising edges on quadrature pair
220 signal B updates the respective count; if the direction
221 is backward, falling edges on quadrature pair signal B
222 updates the respective count. Quadrature encoding
223 determines the direction.
224
225 quadrature x2 a:
226 Any state transition on quadrature pair signal A updates
227 the respective count. Quadrature encoding determines the
228 direction.
229
230 quadrature x2 b:
231 Any state transition on quadrature pair signal B updates
232 the respective count. Quadrature encoding determines the
233 direction.
234
235 quadrature x4:
236 Any state transition on either quadrature pair signals
237 updates the respective count. Quadrature encoding
238 determines the direction.
239
240What: /sys/bus/counter/devices/counterX/countY/name
241KernelVersion: 5.2
242Contact: linux-iio@vger.kernel.org
243Description:
244 Read-only attribute that indicates the device-specific name of
245 Count Y. If possible, this should match the name of the
246 respective channel as it appears in the device datasheet.
247
248What: /sys/bus/counter/devices/counterX/countY/prescaler
249KernelVersion: 5.2
250Contact: linux-iio@vger.kernel.org
251Description:
252 Configure the prescaler value associated with Count Y.
253 On the FlexTimer, the counter clock source passes through a
254 prescaler (i.e. a counter). This acts like a clock
255 divider.
256
257What: /sys/bus/counter/devices/counterX/countY/preset
258KernelVersion: 5.2
259Contact: linux-iio@vger.kernel.org
260Description:
261 If the counter device supports preset registers -- registers
262 used to load counter channels to a set count upon device-defined
263 preset operation trigger events -- the preset count for channel
264 Y is provided by this attribute.
265
266What: /sys/bus/counter/devices/counterX/countY/preset_enable
267KernelVersion: 5.2
268Contact: linux-iio@vger.kernel.org
269Description:
270 Whether channel Y counter preset operation is enabled. Valid
271 attribute values are boolean.
272
273What: /sys/bus/counter/devices/counterX/countY/signalZ_action
274KernelVersion: 5.2
275Contact: linux-iio@vger.kernel.org
276Description:
277 Action mode of Count Y for Signal Z. This attribute indicates
278 the condition of Signal Z that triggers the count function
279 evaluation for Count Y. The following action modes are
280 available:
281
282 none:
283 Signal does not trigger the count function. In
284 Pulse-Direction count function mode, this Signal is
285 evaluated as Direction.
286
287 rising edge:
288 Low state transitions to high state.
289
290 falling edge:
291 High state transitions to low state.
292
293 both edges:
294 Any state transition.
295
296What: /sys/bus/counter/devices/counterX/countY/num_overflows
297KernelVersion: 6.1
298Contact: linux-iio@vger.kernel.org
299Description:
300 This attribute indicates the number of overflows of count Y.
301
302What: /sys/bus/counter/devices/counterX/cascade_counts_enable_component_id
303What: /sys/bus/counter/devices/counterX/external_input_phase_clock_select_component_id
304What: /sys/bus/counter/devices/counterX/countY/capture_component_id
305What: /sys/bus/counter/devices/counterX/countY/ceiling_component_id
306What: /sys/bus/counter/devices/counterX/countY/floor_component_id
307What: /sys/bus/counter/devices/counterX/countY/count_mode_component_id
308What: /sys/bus/counter/devices/counterX/countY/direction_component_id
309What: /sys/bus/counter/devices/counterX/countY/enable_component_id
310What: /sys/bus/counter/devices/counterX/countY/error_noise_component_id
311What: /sys/bus/counter/devices/counterX/countY/prescaler_component_id
312What: /sys/bus/counter/devices/counterX/countY/preset_component_id
313What: /sys/bus/counter/devices/counterX/countY/preset_enable_component_id
314What: /sys/bus/counter/devices/counterX/countY/signalZ_action_component_id
315What: /sys/bus/counter/devices/counterX/countY/num_overflows_component_id
316What: /sys/bus/counter/devices/counterX/signalY/cable_fault_component_id
317What: /sys/bus/counter/devices/counterX/signalY/cable_fault_enable_component_id
318What: /sys/bus/counter/devices/counterX/signalY/filter_clock_prescaler_component_id
319What: /sys/bus/counter/devices/counterX/signalY/index_polarity_component_id
320What: /sys/bus/counter/devices/counterX/signalY/polarity_component_id
321What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode_component_id
322What: /sys/bus/counter/devices/counterX/signalY/frequency_component_id
323KernelVersion: 5.16
324Contact: linux-iio@vger.kernel.org
325Description:
326 Read-only attribute that indicates the component ID of the
327 respective extension or Synapse.
328
329What: /sys/bus/counter/devices/counterX/countY/spike_filter_ns
330KernelVersion: 5.14
331Contact: linux-iio@vger.kernel.org
332Description:
333 If the counter device supports programmable spike filter this
334 attribute indicates the value in nanoseconds where noise pulses
335 shorter or equal to configured value are ignored. Value 0 means
336 filter is disabled.
337
338What: /sys/bus/counter/devices/counterX/events_queue_size
339KernelVersion: 5.16
340Contact: linux-iio@vger.kernel.org
341Description:
342 Size of the Counter events queue in number of struct
343 counter_event data structures. The number of elements will be
344 rounded-up to a power of 2.
345
346What: /sys/bus/counter/devices/counterX/name
347KernelVersion: 5.2
348Contact: linux-iio@vger.kernel.org
349Description:
350 Read-only attribute that indicates the device-specific name of
351 the Counter. This should match the name of the device as it
352 appears in its respective datasheet.
353
354What: /sys/bus/counter/devices/counterX/num_counts
355KernelVersion: 5.2
356Contact: linux-iio@vger.kernel.org
357Description:
358 Read-only attribute that indicates the total number of Counts
359 belonging to the Counter.
360
361What: /sys/bus/counter/devices/counterX/num_signals
362KernelVersion: 5.2
363Contact: linux-iio@vger.kernel.org
364Description:
365 Read-only attribute that indicates the total number of Signals
366 belonging to the Counter.
367
368What: /sys/bus/counter/devices/counterX/signalY/cable_fault
369KernelVersion: 5.7
370Contact: linux-iio@vger.kernel.org
371Description:
372 Read-only attribute that indicates whether a differential
373 encoder cable fault (not connected or loose wires) is detected
374 for the respective channel of Signal Y. Valid attribute values
375 are boolean. Detection must first be enabled via the
376 corresponding cable_fault_enable attribute.
377
378What: /sys/bus/counter/devices/counterX/signalY/cable_fault_enable
379KernelVersion: 5.7
380Contact: linux-iio@vger.kernel.org
381Description:
382 Whether detection of differential encoder cable faults for the
383 respective channel of Signal Y is enabled. Valid attribute
384 values are boolean.
385
386What: /sys/bus/counter/devices/counterX/signalY/filter_clock_prescaler
387KernelVersion: 5.7
388Contact: linux-iio@vger.kernel.org
389Description:
390 Filter clock factor for input Signal Y. This prescaler value
391 affects the inputs of both quadrature pair signals.
392
393What: /sys/bus/counter/devices/counterX/signalY/index_polarity
394KernelVersion: 5.2
395Contact: linux-iio@vger.kernel.org
396Description:
397 Active level of index input Signal Y; irrelevant in
398 non-synchronous load mode.
399
400What: /sys/bus/counter/devices/counterX/signalY/index_polarity_available
401What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode_available
402KernelVersion: 5.2
403Contact: linux-iio@vger.kernel.org
404Description:
405 Discrete set of available values for the respective Signal Y
406 configuration are listed in this file.
407
408What: /sys/bus/counter/devices/counterX/signalY/polarity
409KernelVersion: 6.1
410Contact: linux-iio@vger.kernel.org
411Description:
412 Active level of Signal Y. The following polarity values are
413 available:
414
415 positive:
416 Signal high state considered active level (rising edge).
417
418 negative:
419 Signal low state considered active level (falling edge).
420
421What: /sys/bus/counter/devices/counterX/signalY/name
422KernelVersion: 5.2
423Contact: linux-iio@vger.kernel.org
424Description:
425 Read-only attribute that indicates the device-specific name of
426 Signal Y. If possible, this should match the name of the
427 respective signal as it appears in the device datasheet.
428
429What: /sys/bus/counter/devices/counterX/signalY/signal
430KernelVersion: 5.2
431Contact: linux-iio@vger.kernel.org
432Description:
433 Signal level state of Signal Y. The following signal level
434 states are available:
435
436 low:
437 Low level state.
438
439 high:
440 High level state.
441
442What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode
443KernelVersion: 5.2
444Contact: linux-iio@vger.kernel.org
445Description:
446 Configure the counter associated with Signal Y for
447 non-synchronous or synchronous load mode. Synchronous load mode
448 cannot be selected in non-quadrature (Pulse-Direction) clock
449 mode.
450
451 non-synchronous:
452 A logic low level is the active level at this index
453 input. The index function (as enabled via preset_enable)
454 is performed directly on the active level of the index
455 input.
456
457 synchronous:
458 Intended for interfacing with encoder Index output in
459 quadrature clock mode. The active level is configured
460 via index_polarity. The index function (as enabled via
461 preset_enable) is performed synchronously with the
462 quadrature clock on the active level of the index input.
463
464What: /sys/bus/counter/devices/counterX/signalY/frequency
465KernelVersion: 6.1
466Contact: linux-iio@vger.kernel.org
467Description:
468 Read-only attribute that indicates the signal Y frequency, in Hz.