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