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