1 What: /sys/bus/iio/devices/iio:deviceX
3 Contact: linux-iio@vger.kernel.org
5 Hardware chip or device accessed by one communication port.
6 Corresponds to a grouping of sensor channels. X is the IIO
9 What: /sys/bus/iio/devices/triggerX
11 Contact: linux-iio@vger.kernel.org
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.
22 What: /sys/bus/iio/devices/iio:deviceX/buffer
24 Contact: linux-iio@vger.kernel.org
26 Directory of attributes relating to the buffer for the device.
28 What: /sys/bus/iio/devices/iio:deviceX/name
30 Contact: linux-iio@vger.kernel.org
32 Description of the physical chip / device for device X.
33 Typically a part number.
35 What: /sys/bus/iio/devices/iio:deviceX/timestamp_clock
37 Contact: linux-iio@vger.kernel.org
39 String identifying current posix clock used to timestamp
40 buffered samples and events for device X.
42 What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency
43 What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency
44 What: /sys/bus/iio/devices/triggerX/sampling_frequency
46 Contact: linux-iio@vger.kernel.org
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.
57 What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
58 What: /sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available
59 What: /sys/.../iio:deviceX/buffer/sampling_frequency_available
60 What: /sys/bus/iio/devices/triggerX/sampling_frequency_available
62 Contact: linux-iio@vger.kernel.org
64 When the internal sampling clock can only take a small
65 discrete set of values, this file lists those available.
67 What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio
69 Contact: linux-iio@vger.kernel.org
71 Hardware dependent ADC oversampling. Controls the sampling ratio
72 of the digital filter if available.
74 What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio_available
76 Contact: linux-iio@vger.kernel.org
78 Hardware dependent values supported by the oversampling filter.
80 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw
81 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw
82 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_raw
83 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_raw
85 Contact: linux-iio@vger.kernel.org
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.
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
99 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw
100 KernelVersion: 2.6.35
101 Contact: linux-iio@vger.kernel.org
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.
110 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_raw
111 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw
113 Contact: linux-iio@vger.kernel.org
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.
122 What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw
124 Contact: linux-iio@vger.kernel.org
126 Raw capacitance measurement from channel Y. Units after
127 application of scale and offset are nanofarads.
129 What: /sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw
131 Contact: linux-iio@vger.kernel.org
133 Raw differential capacitance measurement equivalent to
134 channel Y - channel Z where these channel numbers apply to the
135 physically equivalent inputs when non differential readings are
136 separately available. In differential only parts, then all that
137 is required is a consistent labeling. Units after application
138 of scale and offset are nanofarads.
140 What: /sys/bus/iio/devices/iio:deviceX/in_temp_raw
141 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_raw
142 What: /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw
143 What: /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw
144 What: /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw
145 What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw
146 KernelVersion: 2.6.35
147 Contact: linux-iio@vger.kernel.org
149 Raw (unscaled no bias removal etc.) temperature measurement.
150 If an axis is specified it generally means that the temperature
151 sensor is associated with one part of a compound device (e.g.
152 a gyroscope axis). The ambient and object modifiers distinguish
153 between ambient (reference) and distant temperature for contact-
154 less measurements. Units after application of scale and offset
155 are milli degrees Celsius.
157 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_input
158 KernelVersion: 2.6.38
159 Contact: linux-iio@vger.kernel.org
161 Scaled temperature measurement in milli degrees Celsius.
163 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw
164 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw
165 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw
166 KernelVersion: 2.6.35
167 Contact: linux-iio@vger.kernel.org
169 Acceleration in direction x, y or z (may be arbitrarily assigned
170 but should match other such assignments on device).
171 Has all of the equivalent parameters as per voltageY. Units
172 after application of scale and offset are m/s^2.
174 What: /sys/bus/iio/devices/iio:deviceX/in_gravity_x_raw
175 What: /sys/bus/iio/devices/iio:deviceX/in_gravity_y_raw
176 What: /sys/bus/iio/devices/iio:deviceX/in_gravity_z_raw
178 Contact: linux-iio@vger.kernel.org
180 Gravity in direction x, y or z (may be arbitrarily assigned
181 but should match other such assignments on device).
182 Units after application of scale and offset are m/s^2.
184 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
185 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
186 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw
187 KernelVersion: 2.6.35
188 Contact: linux-iio@vger.kernel.org
190 Angular velocity about axis x, y or z (may be arbitrarily
191 assigned). Has all the equivalent parameters as per voltageY.
192 Units after application of scale and offset are radians per
195 What: /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw
196 What: /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw
197 What: /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw
198 KernelVersion: 2.6.35
199 Contact: linux-iio@vger.kernel.org
201 Inclination raw reading about axis x, y or z (may be
202 arbitrarily assigned). Data converted by application of offset
203 and scale to degrees.
205 What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw
206 What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw
207 What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw
208 KernelVersion: 2.6.35
209 Contact: linux-iio@vger.kernel.org
211 Magnetic field along axis x, y or z (may be arbitrarily
212 assigned). Data converted by application of offset
215 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw
216 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw
217 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw
218 KernelVersion: 2.6.36
219 Contact: linux-iio@vger.kernel.org
221 Highest value since some reset condition. These
222 attributes allow access to this and are otherwise
223 the direct equivalent of the <type>Y[_name]_raw attributes.
225 What: /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw
226 KernelVersion: 2.6.36
227 Contact: linux-iio@vger.kernel.org
229 A computed peak value based on the sum squared magnitude of
230 the underlying value in the specified directions.
232 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw
233 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_raw
235 Contact: linux-iio@vger.kernel.org
237 Raw pressure measurement from channel Y. Units after
238 application of scale and offset are kilopascal.
240 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_input
241 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_input
243 Contact: linux-iio@vger.kernel.org
245 Scaled pressure measurement from channel Y, in kilopascal.
247 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw
249 Contact: linux-iio@vger.kernel.org
251 Raw humidity measurement of air. Units after application of
252 scale and offset are milli percent.
254 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input
256 Contact: linux-iio@vger.kernel.org
258 Scaled humidity measurement in milli percent.
260 What: /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw
262 Contact: linux-iio@vger.kernel.org
264 Averaged raw measurement from channel X. The number of values
265 used for averaging is device specific. The converting rules for
266 normal raw values also applies to the averaged raw values.
268 What: /sys/bus/iio/devices/iio:deviceX/in_accel_offset
269 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
270 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
271 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
272 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
273 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
274 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset
275 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset
276 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_offset
277 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_offset
278 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_offset
279 What: /sys/bus/iio/devices/iio:deviceX/in_current_offset
280 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_offset
281 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_offset
282 What: /sys/bus/iio/devices/iio:deviceX/in_current_q_offset
283 What: /sys/bus/iio/devices/iio:deviceX/in_current_i_offset
284 What: /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
285 What: /sys/bus/iio/devices/iio:deviceX/in_temp_offset
286 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
287 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_offset
288 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
289 What: /sys/bus/iio/devices/iio:deviceX/in_magn_offset
290 What: /sys/bus/iio/devices/iio:deviceX/in_rot_offset
291 KernelVersion: 2.6.35
292 Contact: linux-iio@vger.kernel.org
294 If known for a device, offset to be added to <type>[Y]_raw prior
295 to scaling by <type>[Y]_scale in order to obtain value in the
296 <type> units as specified in <type>[Y]_raw documentation.
297 Not present if the offset is always 0 or unknown. If Y or
298 axis <x|y|z> is not present, then the offset applies to all
299 in channels of <type>.
300 May be writable if a variable offset can be applied on the
301 device. Note that this is different to calibbias which
302 is for devices (or drivers) that apply offsets to compensate
303 for variation between different instances of the part, typically
304 adjusted by using some hardware supported calibration procedure.
305 Calibbias is applied internally, offset is applied in userspace
308 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
309 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_scale
310 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale
311 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
312 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
313 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_scale
314 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_scale
315 What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
316 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
317 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
318 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_scale
319 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale
320 What: /sys/bus/iio/devices/iio:deviceX/in_current_scale
321 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_scale
322 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_scale
323 What: /sys/bus/iio/devices/iio:deviceX/in_current_i_scale
324 What: /sys/bus/iio/devices/iio:deviceX/in_current_q_scale
325 What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale
326 What: /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
327 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
328 What: /sys/bus/iio/devices/iio:deviceX/in_energy_scale
329 What: /sys/bus/iio/devices/iio:deviceX/in_distance_scale
330 What: /sys/bus/iio/devices/iio:deviceX/in_magn_scale
331 What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
332 What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
333 What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale
334 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale
335 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale
336 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale
337 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale
338 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
339 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_scale
340 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
341 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
342 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
343 What: /sys/bus/iio/devices/iio:deviceX/in_countY_scale
344 KernelVersion: 2.6.35
345 Contact: linux-iio@vger.kernel.org
347 If known for a device, scale to be applied to <type>Y[_name]_raw
348 post addition of <type>[Y][_name]_offset in order to obtain the
349 measured value in <type> units as specified in
350 <type>[Y][_name]_raw documentation. If shared across all in
351 channels then Y and <x|y|z> are not present and the value is
352 called <type>[Y][_name]_scale. The peak modifier means this
353 value is applied to <type>Y[_name]_peak_raw values.
355 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
356 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
357 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
358 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
359 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
360 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
361 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
362 What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
363 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
364 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
365 KernelVersion: 2.6.35
366 Contact: linux-iio@vger.kernel.org
368 Hardware applied calibration offset (assumed to fix production
371 What /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
372 What /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
373 What /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale
374 What /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale
375 What /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale
376 What /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale
377 What /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
378 What /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
379 What /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
380 What /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
381 What /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
382 What /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
383 What /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
384 what /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
385 what /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
386 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
387 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
388 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale
389 KernelVersion: 2.6.35
390 Contact: linux-iio@vger.kernel.org
392 Hardware applied calibration scale factor (assumed to fix
393 production inaccuracies). If shared across all channels,
394 <type>_calibscale is used.
396 What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender
397 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender
398 What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender
399 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender
401 Contact: linux-iio@vger.kernel.org
403 Gender of the user (e.g.: male, female) used by some pedometers
404 to compute the stride length, distance, speed and activity
407 What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available
408 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available
409 What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available
410 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available
412 Contact: linux-iio@vger.kernel.org
414 Lists all available gender values (e.g.: male, female).
416 What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibheight
417 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibheight
418 What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibheight
419 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight
421 Contact: linux-iio@vger.kernel.org
423 Height of the user (in meters) used by some pedometers
424 to compute the stride length, distance, speed and activity
427 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight
429 Contact: linux-iio@vger.kernel.org
431 Weight of the user (in kg). It is needed by some pedometers
432 to compute the calories burnt by the user.
434 What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
435 What: /sys/.../iio:deviceX/in_anglvel_scale_available
436 What: /sys/.../iio:deviceX/in_magn_scale_available
437 What: /sys/.../iio:deviceX/in_illuminance_scale_available
438 What: /sys/.../iio:deviceX/in_intensity_scale_available
439 What: /sys/.../iio:deviceX/in_proximity_scale_available
440 What: /sys/.../iio:deviceX/in_voltageX_scale_available
441 What: /sys/.../iio:deviceX/in_voltage-voltage_scale_available
442 What: /sys/.../iio:deviceX/out_voltageX_scale_available
443 What: /sys/.../iio:deviceX/out_altvoltageX_scale_available
444 What: /sys/.../iio:deviceX/in_capacitance_scale_available
445 What: /sys/.../iio:deviceX/in_pressure_scale_available
446 What: /sys/.../iio:deviceX/in_pressureY_scale_available
447 KernelVersion: 2.6.35
448 Contact: linux-iio@vger.kernel.org
450 If a discrete set of scale values is available, they
451 are listed in this attribute.
453 What /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
454 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
455 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
456 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
457 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
458 KernelVersion: 2.6.35
459 Contact: linux-iio@vger.kernel.org
461 Hardware applied gain factor. If shared across all channels,
462 <type>_hardwaregain is used.
464 What: /sys/.../in_accel_filter_low_pass_3db_frequency
465 What: /sys/.../in_magn_filter_low_pass_3db_frequency
466 What: /sys/.../in_anglvel_filter_low_pass_3db_frequency
468 Contact: linux-iio@vger.kernel.org
470 If a known or controllable low pass filter is applied
471 to the underlying data channel, then this parameter
472 gives the 3dB frequency of the filter in Hz.
474 What: /sys/.../in_accel_filter_high_pass_3db_frequency
475 What: /sys/.../in_anglvel_filter_high_pass_3db_frequency
476 What: /sys/.../in_magn_filter_high_pass_3db_frequency
478 Contact: linux-iio@vger.kernel.org
480 If a known or controllable high pass filter is applied
481 to the underlying data channel, then this parameter
482 gives the 3dB frequency of the filter in Hz.
484 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw
485 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw
486 KernelVersion: 2.6.37
487 Contact: linux-iio@vger.kernel.org
489 Raw (unscaled, no bias etc.) output voltage for
490 channel Y. The number must always be specified and
491 unique if the output corresponds to a single channel.
492 While DAC like devices typically use out_voltage,
493 a continuous frequency generating device, such as
494 a DDS or PLL should use out_altvoltage.
496 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw
497 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw
498 KernelVersion: 2.6.37
499 Contact: linux-iio@vger.kernel.org
501 Raw (unscaled, no bias etc.) output voltage for an aggregate of
502 channel Y, channel Z, etc. This interface is available in cases
503 where a single output sets the value for multiple channels
506 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode
507 What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode
508 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode
509 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode
510 KernelVersion: 2.6.38
511 Contact: linux-iio@vger.kernel.org
513 Specifies the output powerdown mode.
514 DAC output stage is disconnected from the amplifier and
515 1kohm_to_gnd: connected to ground via an 1kOhm resistor,
516 6kohm_to_gnd: connected to ground via a 6kOhm resistor,
517 20kohm_to_gnd: connected to ground via a 20kOhm resistor,
518 90kohm_to_gnd: connected to ground via a 90kOhm resistor,
519 100kohm_to_gnd: connected to ground via an 100kOhm resistor,
520 125kohm_to_gnd: connected to ground via an 125kOhm resistor,
521 500kohm_to_gnd: connected to ground via a 500kOhm resistor,
522 640kohm_to_gnd: connected to ground via a 640kOhm resistor,
523 three_state: left floating.
524 For a list of available output power down options read
525 outX_powerdown_mode_available. If Y is not present the
526 mode is shared across all outputs.
528 What: /sys/.../iio:deviceX/out_voltageY_powerdown_mode_available
529 What: /sys/.../iio:deviceX/out_voltage_powerdown_mode_available
530 What: /sys/.../iio:deviceX/out_altvoltageY_powerdown_mode_available
531 What: /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available
532 KernelVersion: 2.6.38
533 Contact: linux-iio@vger.kernel.org
535 Lists all available output power down modes.
536 If Y is not present the mode is shared across all outputs.
538 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown
539 What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown
540 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown
541 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown
542 KernelVersion: 2.6.38
543 Contact: linux-iio@vger.kernel.org
545 Writing 1 causes output Y to enter the power down mode specified
546 by the corresponding outY_powerdown_mode. DAC output stage is
547 disconnected from the amplifier. Clearing returns to normal
548 operation. Y may be suppressed if all outputs are controlled
551 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency
553 Contact: linux-iio@vger.kernel.org
555 Output frequency for channel Y in Hz. The number must always be
556 specified and unique if the output corresponds to a single
559 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase
561 Contact: linux-iio@vger.kernel.org
563 Phase in radians of one frequency/clock output Y
564 (out_altvoltageY) relative to another frequency/clock output
565 (out_altvoltageZ) of the device X. The number must always be
566 specified and unique if the output corresponds to a single
569 What: /sys/bus/iio/devices/iio:deviceX/events
570 KernelVersion: 2.6.35
571 Contact: linux-iio@vger.kernel.org
573 Configuration of which hardware generated events are passed up
576 What: /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en
577 What: /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en
578 What: /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en
579 What: /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en
580 What: /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en
581 What: /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en
582 What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en
583 What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en
584 What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en
585 What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en
586 What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en
587 What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en
588 What: /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en
589 What: /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en
590 What: /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en
591 What: /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en
592 What: /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en
593 What: /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en
594 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en
595 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en
596 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en
597 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en
598 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en
599 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en
600 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en
601 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en
602 What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en
603 What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en
604 What: /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en
605 What: /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en
606 What: /sys/.../iio:deviceX/events/in_voltageY_thresh_either_en
607 What: /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
608 What: /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
609 KernelVersion: 2.6.37
610 Contact: linux-iio@vger.kernel.org
612 Event generated when channel passes a threshold in the specified
613 (_rising|_falling) direction. If the direction is not specified,
614 then either the device will report an event which ever direction
615 a single threshold value is passed in (e.g.
616 <type>[Y][_name]_<raw|input>_thresh_value) or
617 <type>[Y][_name]_<raw|input>_thresh_rising_value and
618 <type>[Y][_name]_<raw|input>_thresh_falling_value may take
619 different values, but the device can only enable both thresholds
621 Note the driver will assume the last p events requested are
622 to be enabled where p is how many it supports (which may vary
623 depending on the exact set requested. So if you want to be
624 sure you have set what you think you have, check the contents of
625 these attributes after everything is configured. Drivers may
626 have to buffer any parameters so that they are consistent when
627 a given event type is enabled at a future point (and not those for
628 whatever event was previously enabled).
630 What: /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en
631 What: /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en
632 What: /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en
633 What: /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en
634 What: /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en
635 What: /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en
636 What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en
637 What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en
638 What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en
639 What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en
640 What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en
641 What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en
642 What: /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en
643 What: /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en
644 What: /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en
645 What: /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en
646 What: /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en
647 What: /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en
648 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en
649 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en
650 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en
651 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en
652 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en
653 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en
654 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en
655 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en
656 What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en
657 What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en
658 What: /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en
659 What: /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en
660 What: /sys/.../iio:deviceX/events/in_tempY_roc_rising_en
661 What: /sys/.../iio:deviceX/events/in_tempY_roc_falling_en
662 KernelVersion: 2.6.37
663 Contact: linux-iio@vger.kernel.org
665 Event generated when channel passes a threshold on the rate of
666 change (1st differential) in the specified (_rising|_falling)
667 direction. If the direction is not specified, then either the
668 device will report an event which ever direction a single
669 threshold value is passed in (e.g.
670 <type>[Y][_name]_<raw|input>_roc_value) or
671 <type>[Y][_name]_<raw|input>_roc_rising_value and
672 <type>[Y][_name]_<raw|input>_roc_falling_value may take
673 different values, but the device can only enable both rate of
674 change thresholds or neither.
675 Note the driver will assume the last p events requested are
676 to be enabled where p is however many it supports (which may
677 vary depending on the exact set requested. So if you want to be
678 sure you have set what you think you have, check the contents of
679 these attributes after everything is configured. Drivers may
680 have to buffer any parameters so that they are consistent when
681 a given event type is enabled a future point (and not those for
682 whatever event was previously enabled).
684 What: /sys/.../events/in_accel_thresh_rising_value
685 What: /sys/.../events/in_accel_thresh_falling_value
686 What: /sys/.../events/in_accel_x_raw_thresh_rising_value
687 What: /sys/.../events/in_accel_x_raw_thresh_falling_value
688 What: /sys/.../events/in_accel_y_raw_thresh_rising_value
689 What: /sys/.../events/in_accel_y_raw_thresh_falling_value
690 What: /sys/.../events/in_accel_z_raw_thresh_rising_value
691 What: /sys/.../events/in_accel_z_raw_thresh_falling_value
692 What: /sys/.../events/in_anglvel_x_raw_thresh_rising_value
693 What: /sys/.../events/in_anglvel_x_raw_thresh_falling_value
694 What: /sys/.../events/in_anglvel_y_raw_thresh_rising_value
695 What: /sys/.../events/in_anglvel_y_raw_thresh_falling_value
696 What: /sys/.../events/in_anglvel_z_raw_thresh_rising_value
697 What: /sys/.../events/in_anglvel_z_raw_thresh_falling_value
698 What: /sys/.../events/in_magn_x_raw_thresh_rising_value
699 What: /sys/.../events/in_magn_x_raw_thresh_falling_value
700 What: /sys/.../events/in_magn_y_raw_thresh_rising_value
701 What: /sys/.../events/in_magn_y_raw_thresh_falling_value
702 What: /sys/.../events/in_magn_z_raw_thresh_rising_value
703 What: /sys/.../events/in_magn_z_raw_thresh_falling_value
704 What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value
705 What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value
706 What: /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value
707 What: /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value
708 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value
709 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value
710 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value
711 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value
712 What: /sys/.../events/in_voltageY_supply_raw_thresh_rising_value
713 What: /sys/.../events/in_voltageY_supply_raw_thresh_falling_value
714 What: /sys/.../events/in_voltageY_raw_thresh_rising_value
715 What: /sys/.../events/in_voltageY_raw_thresh_falling_value
716 What: /sys/.../events/in_tempY_raw_thresh_rising_value
717 What: /sys/.../events/in_tempY_raw_thresh_falling_value
718 What: /sys/.../events/in_illuminance0_thresh_falling_value
719 what: /sys/.../events/in_illuminance0_thresh_rising_value
720 what: /sys/.../events/in_proximity0_thresh_falling_value
721 what: /sys/.../events/in_proximity0_thresh_rising_value
722 KernelVersion: 2.6.37
723 Contact: linux-iio@vger.kernel.org
725 Specifies the value of threshold that the device is comparing
726 against for the events enabled by
727 <type>Y[_name]_thresh[_rising|falling]_en.
728 If separate attributes exist for the two directions, but
729 direction is not specified for this attribute, then a single
730 threshold value applies to both directions.
731 The raw or input element of the name indicates whether the
732 value is in raw device units or in processed units (as _raw
733 and _input do on sysfs direct channel read attributes).
735 What: /sys/.../events/in_accel_scale
736 What: /sys/.../events/in_accel_peak_scale
737 What: /sys/.../events/in_anglvel_scale
738 What: /sys/.../events/in_magn_scale
739 What: /sys/.../events/in_rot_from_north_magnetic_scale
740 What: /sys/.../events/in_rot_from_north_true_scale
741 What: /sys/.../events/in_voltage_scale
742 What: /sys/.../events/in_voltage_supply_scale
743 What: /sys/.../events/in_temp_scale
744 What: /sys/.../events/in_illuminance_scale
745 What: /sys/.../events/in_proximity_scale
747 Contact: linux-iio@vger.kernel.org
749 Specifies the conversion factor from the standard units
750 to device specific units used to set the event trigger
753 What: /sys/.../events/in_accel_x_thresh_rising_hysteresis
754 What: /sys/.../events/in_accel_x_thresh_falling_hysteresis
755 What: /sys/.../events/in_accel_x_thresh_either_hysteresis
756 What: /sys/.../events/in_accel_y_thresh_rising_hysteresis
757 What: /sys/.../events/in_accel_y_thresh_falling_hysteresis
758 What: /sys/.../events/in_accel_y_thresh_either_hysteresis
759 What: /sys/.../events/in_accel_z_thresh_rising_hysteresis
760 What: /sys/.../events/in_accel_z_thresh_falling_hysteresis
761 What: /sys/.../events/in_accel_z_thresh_either_hysteresis
762 What: /sys/.../events/in_anglvel_x_thresh_rising_hysteresis
763 What: /sys/.../events/in_anglvel_x_thresh_falling_hysteresis
764 What: /sys/.../events/in_anglvel_x_thresh_either_hysteresis
765 What: /sys/.../events/in_anglvel_y_thresh_rising_hysteresis
766 What: /sys/.../events/in_anglvel_y_thresh_falling_hysteresis
767 What: /sys/.../events/in_anglvel_y_thresh_either_hysteresis
768 What: /sys/.../events/in_anglvel_z_thresh_rising_hysteresis
769 What: /sys/.../events/in_anglvel_z_thresh_falling_hysteresis
770 What: /sys/.../events/in_anglvel_z_thresh_either_hysteresis
771 What: /sys/.../events/in_magn_x_thresh_rising_hysteresis
772 What: /sys/.../events/in_magn_x_thresh_falling_hysteresis
773 What: /sys/.../events/in_magn_x_thresh_either_hysteresis
774 What: /sys/.../events/in_magn_y_thresh_rising_hysteresis
775 What: /sys/.../events/in_magn_y_thresh_falling_hysteresis
776 What: /sys/.../events/in_magn_y_thresh_either_hysteresis
777 What: /sys/.../events/in_magn_z_thresh_rising_hysteresis
778 What: /sys/.../events/in_magn_z_thresh_falling_hysteresis
779 What: /sys/.../events/in_magn_z_thresh_either_hysteresis
780 What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis
781 What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis
782 What: /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis
783 What: /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis
784 What: /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis
785 What: /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis
786 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis
787 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis
788 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis
789 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis
790 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis
791 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis
792 What: /sys/.../events/in_voltageY_thresh_rising_hysteresis
793 What: /sys/.../events/in_voltageY_thresh_falling_hysteresis
794 What: /sys/.../events/in_voltageY_thresh_either_hysteresis
795 What: /sys/.../events/in_tempY_thresh_rising_hysteresis
796 What: /sys/.../events/in_tempY_thresh_falling_hysteresis
797 What: /sys/.../events/in_tempY_thresh_either_hysteresis
798 What: /sys/.../events/in_illuminance0_thresh_falling_hysteresis
799 what: /sys/.../events/in_illuminance0_thresh_rising_hysteresis
800 what: /sys/.../events/in_illuminance0_thresh_either_hysteresis
801 what: /sys/.../events/in_proximity0_thresh_falling_hysteresis
802 what: /sys/.../events/in_proximity0_thresh_rising_hysteresis
803 what: /sys/.../events/in_proximity0_thresh_either_hysteresis
805 Contact: linux-iio@vger.kernel.org
807 Specifies the hysteresis of threshold that the device is comparing
808 against for the events enabled by
809 <type>Y[_name]_thresh[_(rising|falling)]_hysteresis.
810 If separate attributes exist for the two directions, but
811 direction is not specified for this attribute, then a single
812 hysteresis value applies to both directions.
813 For falling events the hysteresis is added to the _value attribute for
814 this event to get the upper threshold for when the event goes back to
815 normal, for rising events the hysteresis is subtracted from the _value
816 attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200
817 and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event
818 will get activated once in_voltage0_raw goes above 1200 and will become
819 deactivated again once the value falls below 1150.
821 What: /sys/.../events/in_accel_x_raw_roc_rising_value
822 What: /sys/.../events/in_accel_x_raw_roc_falling_value
823 What: /sys/.../events/in_accel_y_raw_roc_rising_value
824 What: /sys/.../events/in_accel_y_raw_roc_falling_value
825 What: /sys/.../events/in_accel_z_raw_roc_rising_value
826 What: /sys/.../events/in_accel_z_raw_roc_falling_value
827 What: /sys/.../events/in_anglvel_x_raw_roc_rising_value
828 What: /sys/.../events/in_anglvel_x_raw_roc_falling_value
829 What: /sys/.../events/in_anglvel_y_raw_roc_rising_value
830 What: /sys/.../events/in_anglvel_y_raw_roc_falling_value
831 What: /sys/.../events/in_anglvel_z_raw_roc_rising_value
832 What: /sys/.../events/in_anglvel_z_raw_roc_falling_value
833 What: /sys/.../events/in_magn_x_raw_roc_rising_value
834 What: /sys/.../events/in_magn_x_raw_roc_falling_value
835 What: /sys/.../events/in_magn_y_raw_roc_rising_value
836 What: /sys/.../events/in_magn_y_raw_roc_falling_value
837 What: /sys/.../events/in_magn_z_raw_roc_rising_value
838 What: /sys/.../events/in_magn_z_raw_roc_falling_value
839 What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value
840 What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value
841 What: /sys/.../events/in_rot_from_north_true_raw_roc_rising_value
842 What: /sys/.../events/in_rot_from_north_true_raw_roc_falling_value
843 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value
844 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value
845 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value
846 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value
847 What: /sys/.../events/in_voltageY_supply_raw_roc_rising_value
848 What: /sys/.../events/in_voltageY_supply_raw_roc_falling_value
849 What: /sys/.../events/in_voltageY_raw_roc_rising_value
850 What: /sys/.../events/in_voltageY_raw_roc_falling_value
851 What: /sys/.../events/in_tempY_raw_roc_rising_value
852 What: /sys/.../events/in_tempY_raw_roc_falling_value
853 KernelVersion: 2.6.37
854 Contact: linux-iio@vger.kernel.org
856 Specifies the value of rate of change threshold that the
857 device is comparing against for the events enabled by
858 <type>[Y][_name]_roc[_rising|falling]_en.
859 If separate attributes exist for the two directions,
860 but direction is not specified for this attribute,
861 then a single threshold value applies to both directions.
862 The raw or input element of the name indicates whether the
863 value is in raw device units or in processed units (as _raw
864 and _input do on sysfs direct channel read attributes).
866 What: /sys/.../events/in_accel_x_thresh_rising_period
867 What: /sys/.../events/in_accel_x_thresh_falling_period
868 What: /sys/.../events/in_accel_x_roc_rising_period
869 What: /sys/.../events/in_accel_x_roc_falling_period
870 What: /sys/.../events/in_accel_y_thresh_rising_period
871 What: /sys/.../events/in_accel_y_thresh_falling_period
872 What: /sys/.../events/in_accel_y_roc_rising_period
873 What: /sys/.../events/in_accel_y_roc_falling_period
874 What: /sys/.../events/in_accel_z_thresh_rising_period
875 What: /sys/.../events/in_accel_z_thresh_falling_period
876 What: /sys/.../events/in_accel_z_roc_rising_period
877 What: /sys/.../events/in_accel_z_roc_falling_period
878 What: /sys/.../events/in_anglvel_x_thresh_rising_period
879 What: /sys/.../events/in_anglvel_x_thresh_falling_period
880 What: /sys/.../events/in_anglvel_x_roc_rising_period
881 What: /sys/.../events/in_anglvel_x_roc_falling_period
882 What: /sys/.../events/in_anglvel_y_thresh_rising_period
883 What: /sys/.../events/in_anglvel_y_thresh_falling_period
884 What: /sys/.../events/in_anglvel_y_roc_rising_period
885 What: /sys/.../events/in_anglvel_y_roc_falling_period
886 What: /sys/.../events/in_anglvel_z_thresh_rising_period
887 What: /sys/.../events/in_anglvel_z_thresh_falling_period
888 What: /sys/.../events/in_anglvel_z_roc_rising_period
889 What: /sys/.../events/in_anglvel_z_roc_falling_period
890 What: /sys/.../events/in_magn_x_thresh_rising_period
891 What: /sys/.../events/in_magn_x_thresh_falling_period
892 What: /sys/.../events/in_magn_x_roc_rising_period
893 What: /sys/.../events/in_magn_x_roc_falling_period
894 What: /sys/.../events/in_magn_y_thresh_rising_period
895 What: /sys/.../events/in_magn_y_thresh_falling_period
896 What: /sys/.../events/in_magn_y_roc_rising_period
897 What: /sys/.../events/in_magn_y_roc_falling_period
898 What: /sys/.../events/in_magn_z_thresh_rising_period
899 What: /sys/.../events/in_magn_z_thresh_falling_period
900 What: /sys/.../events/in_magn_z_roc_rising_period
901 What: /sys/.../events/in_magn_z_roc_falling_period
902 What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period
903 What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period
904 What: /sys/.../events/in_rot_from_north_magnetic_roc_rising_period
905 What: /sys/.../events/in_rot_from_north_magnetic_roc_falling_period
906 What: /sys/.../events/in_rot_from_north_true_thresh_rising_period
907 What: /sys/.../events/in_rot_from_north_true_thresh_falling_period
908 What: /sys/.../events/in_rot_from_north_true_roc_rising_period
909 What: /sys/.../events/in_rot_from_north_true_roc_falling_period
910 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period
911 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period
912 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period
913 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period
914 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period
915 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period
916 What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period
917 What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period
918 What: /sys/.../events/in_voltageY_supply_thresh_rising_period
919 What: /sys/.../events/in_voltageY_supply_thresh_falling_period
920 What: /sys/.../events/in_voltageY_supply_roc_rising_period
921 What: /sys/.../events/in_voltageY_supply_roc_falling_period
922 What: /sys/.../events/in_voltageY_thresh_rising_period
923 What: /sys/.../events/in_voltageY_thresh_falling_period
924 What: /sys/.../events/in_voltageY_roc_rising_period
925 What: /sys/.../events/in_voltageY_roc_falling_period
926 What: /sys/.../events/in_tempY_thresh_rising_period
927 What: /sys/.../events/in_tempY_thresh_falling_period
928 What: /sys/.../events/in_tempY_roc_rising_period
929 What: /sys/.../events/in_tempY_roc_falling_period
930 What: /sys/.../events/in_accel_x&y&z_mag_falling_period
931 What: /sys/.../events/in_intensity0_thresh_period
932 What: /sys/.../events/in_proximity0_thresh_period
933 What: /sys/.../events/in_activity_still_thresh_rising_period
934 What: /sys/.../events/in_activity_still_thresh_falling_period
935 What: /sys/.../events/in_activity_walking_thresh_rising_period
936 What: /sys/.../events/in_activity_walking_thresh_falling_period
937 What: /sys/.../events/in_activity_jogging_thresh_rising_period
938 What: /sys/.../events/in_activity_jogging_thresh_falling_period
939 What: /sys/.../events/in_activity_running_thresh_rising_period
940 What: /sys/.../events/in_activity_running_thresh_falling_period
941 KernelVersion: 2.6.37
942 Contact: linux-iio@vger.kernel.org
944 Period of time (in seconds) for which the condition must be
945 met before an event is generated. If direction is not
946 specified then this period applies to both directions.
948 What: /sys/.../events/in_accel_thresh_rising_low_pass_filter_3db
949 What: /sys/.../events/in_anglvel_thresh_rising_low_pass_filter_3db
950 What: /sys/.../events/in_magn_thresh_rising_low_pass_filter_3db
952 Contact: linux-iio@vger.kernel.org
954 If a low pass filter can be applied to the event generation
955 this property gives its 3db frequency in Hz.
956 A value of zero disables the filter.
958 What: /sys/.../events/in_accel_thresh_rising_high_pass_filter_3db
959 What: /sys/.../events/in_anglvel_thresh_rising_high_pass_filter_3db
960 What: /sys/.../events/in_magn_thresh_rising_high_pass_filter_3db
962 Contact: linux-iio@vger.kernel.org
964 If a high 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.
968 What: /sys/.../events/in_activity_still_thresh_rising_en
969 What: /sys/.../events/in_activity_still_thresh_falling_en
970 What: /sys/.../events/in_activity_walking_thresh_rising_en
971 What: /sys/.../events/in_activity_walking_thresh_falling_en
972 What: /sys/.../events/in_activity_jogging_thresh_rising_en
973 What: /sys/.../events/in_activity_jogging_thresh_falling_en
974 What: /sys/.../events/in_activity_running_thresh_rising_en
975 What: /sys/.../events/in_activity_running_thresh_falling_en
977 Contact: linux-iio@vger.kernel.org
979 Enables or disables activitity events. Depending on direction
980 an event is generated when sensor ENTERS or LEAVES a given state.
982 What: /sys/.../events/in_activity_still_thresh_rising_value
983 What: /sys/.../events/in_activity_still_thresh_falling_value
984 What: /sys/.../events/in_activity_walking_thresh_rising_value
985 What: /sys/.../events/in_activity_walking_thresh_falling_value
986 What: /sys/.../events/in_activity_jogging_thresh_rising_value
987 What: /sys/.../events/in_activity_jogging_thresh_falling_value
988 What: /sys/.../events/in_activity_running_thresh_rising_value
989 What: /sys/.../events/in_activity_running_thresh_falling_value
991 Contact: linux-iio@vger.kernel.org
993 Confidence value (in units as percentage) to be used
994 for deciding when an event should be generated. E.g for
995 running: If the confidence value reported by the sensor
996 is greater than in_activity_running_thresh_rising_value
997 then the sensor ENTERS running state. Conversely, if the
998 confidence value reported by the sensor is lower than
999 in_activity_running_thresh_falling_value then the sensor
1000 is LEAVING running state.
1002 What: /sys/.../iio:deviceX/events/in_accel_mag_en
1003 What: /sys/.../iio:deviceX/events/in_accel_mag_rising_en
1004 What: /sys/.../iio:deviceX/events/in_accel_mag_falling_en
1005 What: /sys/.../iio:deviceX/events/in_accel_x_mag_en
1006 What: /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en
1007 What: /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en
1008 What: /sys/.../iio:deviceX/events/in_accel_y_mag_en
1009 What: /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en
1010 What: /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en
1011 What: /sys/.../iio:deviceX/events/in_accel_z_mag_en
1012 What: /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en
1013 What: /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en
1014 What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en
1015 What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en
1016 KernelVersion: 2.6.37
1017 Contact: linux-iio@vger.kernel.org
1019 Similar to in_accel_x_thresh[_rising|_falling]_en, but here the
1020 magnitude of the channel is compared to the threshold, not its
1023 What: /sys/.../events/in_accel_raw_mag_value
1024 What: /sys/.../events/in_accel_x_raw_mag_rising_value
1025 What: /sys/.../events/in_accel_y_raw_mag_rising_value
1026 What: /sys/.../events/in_accel_z_raw_mag_rising_value
1027 KernelVersion: 2.6.37
1028 Contact: linux-iio@vger.kernel.org
1030 The value to which the magnitude of the channel is compared. If
1031 number or direction is not specified, applies to all channels of
1034 What: /sys/.../events/in_steps_change_en
1036 Contact: linux-iio@vger.kernel.org
1038 Event generated when channel passes a threshold on the absolute
1039 change in value. E.g. for steps: a step change event is
1040 generated each time the user takes N steps, where N is set using
1041 in_steps_change_value.
1043 What: /sys/.../events/in_steps_change_value
1045 Contact: linux-iio@vger.kernel.org
1047 Specifies the value of change threshold that the
1048 device is comparing against for the events enabled by
1049 <type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps:
1050 if set to 3, a step change event will be generated every 3
1053 What: /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger
1054 KernelVersion: 2.6.35
1055 Contact: linux-iio@vger.kernel.org
1057 The name of the trigger source being used, as per string given
1058 in /sys/class/iio/triggerY/name.
1060 What: /sys/bus/iio/devices/iio:deviceX/buffer/length
1061 KernelVersion: 2.6.35
1062 Contact: linux-iio@vger.kernel.org
1064 Number of scans contained by the buffer.
1066 What: /sys/bus/iio/devices/iio:deviceX/buffer/enable
1067 KernelVersion: 2.6.35
1068 Contact: linux-iio@vger.kernel.org
1070 Actually start the buffer capture up. Will start trigger
1071 if first device and appropriate.
1073 What: /sys/bus/iio/devices/iio:deviceX/scan_elements
1074 KernelVersion: 2.6.37
1075 Contact: linux-iio@vger.kernel.org
1077 Directory containing interfaces for elements that will be
1078 captured for a single triggered sample set in the buffer.
1080 What: /sys/.../iio:deviceX/scan_elements/in_accel_x_en
1081 What: /sys/.../iio:deviceX/scan_elements/in_accel_y_en
1082 What: /sys/.../iio:deviceX/scan_elements/in_accel_z_en
1083 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en
1084 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en
1085 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en
1086 What: /sys/.../iio:deviceX/scan_elements/in_magn_x_en
1087 What: /sys/.../iio:deviceX/scan_elements/in_magn_y_en
1088 What: /sys/.../iio:deviceX/scan_elements/in_magn_z_en
1089 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en
1090 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en
1091 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en
1092 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en
1093 What: /sys/.../iio:deviceX/scan_elements/in_timestamp_en
1094 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en
1095 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_en
1096 What: /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
1097 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_en
1098 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_en
1099 What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_en
1100 What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_en
1101 What: /sys/.../iio:deviceX/scan_elements/in_incli_x_en
1102 What: /sys/.../iio:deviceX/scan_elements/in_incli_y_en
1103 What: /sys/.../iio:deviceX/scan_elements/in_pressureY_en
1104 What: /sys/.../iio:deviceX/scan_elements/in_pressure_en
1105 What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en
1106 What: /sys/.../iio:deviceX/scan_elements/in_proximity_en
1107 KernelVersion: 2.6.37
1108 Contact: linux-iio@vger.kernel.org
1110 Scan element control for triggered data capture.
1112 What: /sys/.../iio:deviceX/scan_elements/in_accel_type
1113 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_type
1114 What: /sys/.../iio:deviceX/scan_elements/in_magn_type
1115 What: /sys/.../iio:deviceX/scan_elements/in_incli_type
1116 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_type
1117 What: /sys/.../iio:deviceX/scan_elements/in_voltage_type
1118 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type
1119 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_type
1120 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_type
1121 What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_type
1122 What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_type
1123 What: /sys/.../iio:deviceX/scan_elements/in_timestamp_type
1124 What: /sys/.../iio:deviceX/scan_elements/in_pressureY_type
1125 What: /sys/.../iio:deviceX/scan_elements/in_pressure_type
1126 What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type
1127 What: /sys/.../iio:deviceX/scan_elements/in_proximity_type
1128 KernelVersion: 2.6.37
1129 Contact: linux-iio@vger.kernel.org
1131 Description of the scan element data storage within the buffer
1132 and hence the form in which it is read from user-space.
1133 Form is [be|le]:[s|u]bits/storagebits[>>shift].
1134 be or le specifies big or little endian. s or u specifies if
1135 signed (2's complement) or unsigned. bits is the number of bits
1136 of data and storagebits is the space (after padding) that it
1137 occupies in the buffer. shift if specified, is the shift that
1138 needs to be applied prior to masking out unused bits. Some
1139 devices put their data in the middle of the transferred elements
1140 with additional information on both sides. Note that some
1141 devices will have additional information in the unused bits
1142 so to get a clean value, the bits value must be used to mask
1143 the buffer output value appropriately. The storagebits value
1144 also specifies the data alignment. So s48/64>>2 will be a
1145 signed 48 bit integer stored in a 64 bit location aligned to
1146 a 64 bit boundary. To obtain the clean value, shift right 2
1147 and apply a mask to zero the top 16 bits of the result.
1148 For other storage combinations this attribute will be extended
1151 What: /sys/.../iio:deviceX/scan_elements/in_accel_type_available
1152 KernelVersion: 2.6.37
1153 Contact: linux-iio@vger.kernel.org
1155 If the type parameter can take one of a small set of values,
1156 this attribute lists them.
1158 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_index
1159 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index
1160 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_index
1161 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_index
1162 What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_index
1163 What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_index
1164 What: /sys/.../iio:deviceX/scan_elements/in_accel_x_index
1165 What: /sys/.../iio:deviceX/scan_elements/in_accel_y_index
1166 What: /sys/.../iio:deviceX/scan_elements/in_accel_z_index
1167 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index
1168 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index
1169 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index
1170 What: /sys/.../iio:deviceX/scan_elements/in_magn_x_index
1171 What: /sys/.../iio:deviceX/scan_elements/in_magn_y_index
1172 What: /sys/.../iio:deviceX/scan_elements/in_magn_z_index
1173 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index
1174 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index
1175 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index
1176 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index
1177 What: /sys/.../iio:deviceX/scan_elements/in_incli_x_index
1178 What: /sys/.../iio:deviceX/scan_elements/in_incli_y_index
1179 What: /sys/.../iio:deviceX/scan_elements/in_timestamp_index
1180 What: /sys/.../iio:deviceX/scan_elements/in_pressureY_index
1181 What: /sys/.../iio:deviceX/scan_elements/in_pressure_index
1182 What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index
1183 What: /sys/.../iio:deviceX/scan_elements/in_proximity_index
1184 KernelVersion: 2.6.37
1185 Contact: linux-iio@vger.kernel.org
1187 A single positive integer specifying the position of this
1188 scan element in the buffer. Note these are not dependent on
1189 what is enabled and may not be contiguous. Thus for user-space
1190 to establish the full layout these must be used in conjunction
1191 with all _en attributes to establish which channels are present,
1192 and the relevant _type attributes to establish the data storage
1195 What: /sys/.../iio:deviceX/in_activity_still_input
1196 What: /sys/.../iio:deviceX/in_activity_walking_input
1197 What: /sys/.../iio:deviceX/in_activity_jogging_input
1198 What: /sys/.../iio:deviceX/in_activity_running_input
1200 Contact: linux-iio@vger.kernel.org
1202 This attribute is used to read the confidence for an activity
1203 expressed in units as percentage.
1205 What: /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw
1206 KernelVersion: 2.6.38
1207 Contact: linux-iio@vger.kernel.org
1209 This attribute is used to read the amount of quadrature error
1210 present in the device at a given time.
1212 What: /sys/.../iio:deviceX/in_accelX_power_mode
1214 Contact: linux-iio@vger.kernel.org
1216 Specifies the chip power mode.
1217 low_noise: reduce noise level from ADC,
1218 low_power: enable low current consumption.
1219 For a list of available output power modes read
1220 in_accel_power_mode_available.
1222 What: /sys/.../iio:deviceX/in_energy_input
1223 What: /sys/.../iio:deviceX/in_energy_raw
1225 Contact: linux-iio@vger.kernel.org
1227 This attribute is used to read the energy value reported by the
1228 device (e.g.: human activity sensors report energy burnt by the
1229 user). Units after application of scale are Joules.
1231 What: /sys/.../iio:deviceX/in_distance_input
1232 What: /sys/.../iio:deviceX/in_distance_raw
1234 Contact: linux-iio@vger.kernel.org
1236 This attribute is used to read the distance covered by the user
1237 since the last reboot while activated. Units after application
1238 of scale are meters.
1240 What: /sys/bus/iio/devices/iio:deviceX/store_eeprom
1241 KernelVersion: 3.4.0
1242 Contact: linux-iio@vger.kernel.org
1244 Writing '1' stores the current device configuration into
1245 on-chip EEPROM. After power-up or chip reset the device will
1246 automatically load the saved configuration.
1248 What: /sys/.../iio:deviceX/in_proximity_raw
1249 What: /sys/.../iio:deviceX/in_proximity_input
1250 What: /sys/.../iio:deviceX/in_proximityY_raw
1252 Contact: linux-iio@vger.kernel.org
1254 Proximity measurement indicating that some
1255 object is near the sensor, usually by observing
1256 reflectivity of infrared or ultrasound emitted.
1257 Often these sensors are unit less and as such conversion
1258 to SI units is not possible. Higher proximity measurements
1259 indicate closer objects, and vice versa. Units after
1260 application of scale and offset are meters.
1262 What: /sys/.../iio:deviceX/in_illuminance_input
1263 What: /sys/.../iio:deviceX/in_illuminance_raw
1264 What: /sys/.../iio:deviceX/in_illuminanceY_input
1265 What: /sys/.../iio:deviceX/in_illuminanceY_raw
1266 What: /sys/.../iio:deviceX/in_illuminanceY_mean_raw
1267 What: /sys/.../iio:deviceX/in_illuminance_ir_raw
1268 What: /sys/.../iio:deviceX/in_illuminance_clear_raw
1270 Contact: linux-iio@vger.kernel.org
1272 Illuminance measurement, units after application of scale
1275 What: /sys/.../iio:deviceX/in_intensityY_raw
1276 What: /sys/.../iio:deviceX/in_intensityY_ir_raw
1277 What: /sys/.../iio:deviceX/in_intensityY_both_raw
1278 What: /sys/.../iio:deviceX/in_intensityY_uv_raw
1280 Contact: linux-iio@vger.kernel.org
1282 Unit-less light intensity. Modifiers both and ir indicate
1283 that measurements contains visible and infrared light
1284 components or just infrared light, respectively. Modifier uv indicates
1285 that measurements contain ultraviolet light components.
1287 What: /sys/.../iio:deviceX/in_uvindex_input
1289 Contact: linux-iio@vger.kernel.org
1291 UV light intensity index measuring the human skin's response to
1292 different wavelength of sunlight weighted according to the
1293 standardised CIE Erythemal Action Spectrum. UV index values range
1294 from 0 (low) to >=11 (extreme).
1296 What: /sys/.../iio:deviceX/in_intensity_red_integration_time
1297 What: /sys/.../iio:deviceX/in_intensity_green_integration_time
1298 What: /sys/.../iio:deviceX/in_intensity_blue_integration_time
1299 What: /sys/.../iio:deviceX/in_intensity_clear_integration_time
1300 What: /sys/.../iio:deviceX/in_illuminance_integration_time
1302 Contact: linux-iio@vger.kernel.org
1304 This attribute is used to get/set the integration time in
1307 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time
1309 Contact: linux-iio@vger.kernel.org
1311 Number of seconds in which to compute speed.
1313 What: /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw
1315 Contact: linux-iio@vger.kernel.org
1317 Raw value of quaternion components using a format
1318 x y z w. Here x, y, and z component represents the axis about
1319 which a rotation will occur and w component represents the
1322 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw
1323 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw
1324 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw
1325 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw
1327 Contact: linux-iio@vger.kernel.org
1329 Raw value of rotation from true/magnetic north measured with
1330 or without compensation from tilt sensors.
1332 What: /sys/bus/iio/devices/iio:deviceX/in_currentX_raw
1333 What: /sys/bus/iio/devices/iio:deviceX/in_currentX_i_raw
1334 What: /sys/bus/iio/devices/iio:deviceX/in_currentX_q_raw
1336 Contact: linux-iio@vger.kernel.org
1338 Raw current measurement from channel X. Units are in milliamps
1339 after application of scale and offset. If no offset or scale is
1340 present, output should be considered as processed with the
1343 Channels with 'i' and 'q' modifiers always exist in pairs and both
1344 channels refer to the same signal. The 'i' channel contains the in-phase
1345 component of the signal while the 'q' channel contains the quadrature
1348 What: /sys/.../iio:deviceX/in_energy_en
1349 What: /sys/.../iio:deviceX/in_distance_en
1350 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en
1351 What: /sys/.../iio:deviceX/in_steps_en
1353 Contact: linux-iio@vger.kernel.org
1355 Activates a device feature that runs in firmware/hardware.
1356 E.g. for steps: the pedometer saves power while not used;
1357 when activated, it will count the steps taken by the user in
1358 firmware and export them through in_steps_input.
1360 What: /sys/.../iio:deviceX/in_steps_input
1362 Contact: linux-iio@vger.kernel.org
1364 This attribute is used to read the number of steps taken by the user
1365 since the last reboot while activated.
1367 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input
1368 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw
1370 Contact: linux-iio@vger.kernel.org
1372 This attribute is used to read the current speed value of the
1373 user (which is the norm or magnitude of the velocity vector).
1374 Units after application of scale are m/s.
1376 What: /sys/.../iio:deviceX/in_steps_debounce_count
1378 Contact: linux-iio@vger.kernel.org
1380 Specifies the number of steps that must occur within
1381 in_steps_filter_debounce_time for the pedometer to decide the
1382 consumer is making steps.
1384 What: /sys/.../iio:deviceX/in_steps_debounce_time
1386 Contact: linux-iio@vger.kernel.org
1388 Specifies number of seconds in which we compute the steps
1389 that occur in order to decide if the consumer is making steps.
1391 What: /sys/bus/iio/devices/iio:deviceX/buffer/watermark
1393 Contact: linux-iio@vger.kernel.org
1395 A single positive integer specifying the maximum number of scan
1396 elements to wait for.
1397 Poll will block until the watermark is reached.
1398 Blocking read will wait until the minimum between the requested
1399 read amount or the low water mark is available.
1400 Non-blocking read will retrieve the available samples from the
1401 buffer even if there are less samples then watermark level. This
1402 allows the application to block on poll with a timeout and read
1403 the available samples after the timeout expires and thus have a
1404 maximum delay guarantee.
1406 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled
1408 Contact: linux-iio@vger.kernel.org
1410 A read-only boolean value that indicates if the hardware fifo is
1411 currently enabled or disabled. If the device does not have a
1412 hardware fifo this entry is not present.
1413 The hardware fifo is enabled when the buffer is enabled if the
1414 current hardware fifo watermark level is set and other current
1415 device settings allows it (e.g. if a trigger is set that samples
1416 data differently that the hardware fifo does then hardware fifo
1418 If the hardware fifo is enabled and the level of the hardware
1419 fifo reaches the hardware fifo watermark level the device will
1420 flush its hardware fifo to the device buffer. Doing a non
1421 blocking read on the device when no samples are present in the
1422 device buffer will also force a flush.
1423 When the hardware fifo is enabled there is no need to use a
1424 trigger to use buffer mode since the watermark settings
1425 guarantees that the hardware fifo is flushed to the device
1428 What: /sys/bus/iio/devices/iio:device*/buffer/hwfifo_timeout
1430 Contact: linux-iio@vger.kernel.org
1432 A read/write property to provide capability to delay reporting of
1433 samples till a timeout is reached. This allows host processors to
1434 sleep, while the sensor is storing samples in its internal fifo.
1435 The maximum timeout in seconds can be specified by setting
1436 hwfifo_timeout.The current delay can be read by reading
1437 hwfifo_timeout. A value of 0 means that there is no timeout.
1439 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark
1441 Contact: linux-iio@vger.kernel.org
1443 Read-only entry that contains a single integer specifying the
1444 current watermark level for the hardware fifo. If the device
1445 does not have a hardware fifo this entry is not present.
1446 The watermark level for the hardware fifo is set by the driver
1447 based on the value set by the user in buffer/watermark but
1448 taking into account hardware limitations (e.g. most hardware
1449 buffers are limited to 32-64 samples, some hardware buffers
1450 watermarks are fixed or have minimum levels). A value of 0
1451 means that the hardware watermark is unset.
1453 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_min
1455 Contact: linux-iio@vger.kernel.org
1457 A single positive integer specifying the minimum watermark level
1458 for the hardware fifo of this device. If the device does not
1459 have a hardware fifo this entry is not present.
1460 If the user sets buffer/watermark to a value less than this one,
1461 then the hardware watermark will remain unset.
1463 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_max
1465 Contact: linux-iio@vger.kernel.org
1467 A single positive integer specifying the maximum watermark level
1468 for the hardware fifo of this device. If the device does not
1469 have a hardware fifo this entry is not present.
1470 If the user sets buffer/watermark to a value greater than this
1471 one, then the hardware watermark will be capped at this value.
1473 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_available
1475 Contact: linux-iio@vger.kernel.org
1477 A list of positive integers specifying the available watermark
1478 levels for the hardware fifo. This entry is optional and if it
1479 is not present it means that all the values between
1480 hwfifo_watermark_min and hwfifo_watermark_max are supported.
1481 If the user sets buffer/watermark to a value greater than
1482 hwfifo_watermak_min but not equal to any of the values in this
1483 list, the driver will chose an appropriate value for the
1484 hardware fifo watermark level.
1486 What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibemissivity
1487 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_calibemissivity
1488 What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibemissivity
1489 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibemissivity
1491 Contact: linux-iio@vger.kernel.org
1493 The emissivity ratio of the surface in the field of view of the
1494 contactless temperature sensor. Emissivity varies from 0 to 1,
1495 with 1 being the emissivity of a black body.
1497 What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_oversampling_ratio
1498 What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_oversampling_ratio
1499 What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_oversampling_ratio
1501 Contact: linux-iio@vger.kernel.org
1503 Hardware applied number of measurements for acquiring one
1504 data point. The HW will do <type>[_name]_oversampling_ratio
1505 measurements and return the average value as output data. Each
1506 value resulted from <type>[_name]_oversampling_ratio measurements
1507 is considered as one sample for <type>[_name]_sampling_frequency.
1509 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_raw
1510 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_raw
1511 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw
1512 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_co2_raw
1513 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw
1514 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw
1516 Contact: linux-iio@vger.kernel.org
1518 Raw (unscaled no offset etc.) percentage reading of a substance.
1520 What: /sys/bus/iio/devices/iio:deviceX/in_resistance_raw
1521 What: /sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw
1522 What: /sys/bus/iio/devices/iio:deviceX/out_resistance_raw
1523 What: /sys/bus/iio/devices/iio:deviceX/out_resistanceX_raw
1525 Contact: linux-iio@vger.kernel.org
1527 Raw (unscaled no offset etc.) resistance reading that can be processed
1530 What: /sys/bus/iio/devices/iio:deviceX/heater_enable
1531 KernelVersion: 4.1.0
1532 Contact: linux-iio@vger.kernel.org
1534 '1' (enable) or '0' (disable) specifying the enable
1535 of heater function. Same reading values apply
1536 This ABI is especially applicable for humidity sensors
1537 to heatup the device and get rid of any condensation
1538 in some humidity environment
1540 What: /sys/bus/iio/devices/iio:deviceX/in_ph_raw
1542 Contact: linux-iio@vger.kernel.org
1544 Raw (unscaled no offset etc.) pH reading of a substance as a negative
1545 base-10 logarithm of hydrodium ions in a litre of water.
1547 What: /sys/bus/iio/devices/iio:deviceX/mount_matrix
1548 What: /sys/bus/iio/devices/iio:deviceX/in_mount_matrix
1549 What: /sys/bus/iio/devices/iio:deviceX/out_mount_matrix
1550 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_mount_matrix
1551 What: /sys/bus/iio/devices/iio:deviceX/in_accel_mount_matrix
1553 Contact: linux-iio@vger.kernel.org
1555 Mounting matrix for IIO sensors. This is a rotation matrix which
1556 informs userspace about sensor chip's placement relative to the
1557 main hardware it is mounted on.
1558 Main hardware placement is defined according to the local
1559 reference frame related to the physical quantity the sensor
1561 Given that the rotation matrix is defined in a board specific
1562 way (platform data and / or device-tree), the main hardware
1563 reference frame definition is left to the implementor's choice
1564 (see below for a magnetometer example).
1565 Applications should apply this rotation matrix to samples so
1566 that when main hardware reference frame is aligned onto local
1567 reference frame, then sensor chip reference frame is also
1568 perfectly aligned with it.
1569 Matrix is a 3x3 unitary matrix and typically looks like
1570 [0, 1, 0; 1, 0, 0; 0, 0, -1]. Identity matrix
1571 [1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and main hardware
1572 are perfectly aligned with each other.
1574 For example, a mounting matrix for a magnetometer sensor informs
1575 userspace about sensor chip's ORIENTATION relative to the main
1577 More specifically, main hardware orientation is defined with
1578 respect to the LOCAL EARTH GEOMAGNETIC REFERENCE FRAME where :
1579 * Y is in the ground plane and positive towards magnetic North ;
1580 * X is in the ground plane, perpendicular to the North axis and
1581 positive towards the East ;
1582 * Z is perpendicular to the ground plane and positive upwards.
1584 An implementor might consider that for a hand-held device, a
1585 'natural' orientation would be 'front facing camera at the top'.
1586 The main hardware reference frame could then be described as :
1587 * Y is in the plane of the screen and is positive towards the
1589 * X is in the plane of the screen, perpendicular to Y axis, and
1590 positive towards the right hand side of the screen ;
1591 * Z is perpendicular to the screen plane and positive out of the
1593 Another example for a quadrotor UAV might be :
1594 * Y is in the plane of the propellers and positive towards the
1596 * X is in the plane of the propellers, perpendicular to Y axis,
1597 and positive towards the starboard side of the UAV ;
1598 * Z is perpendicular to propellers plane and positive upwards.
1600 What: /sys/bus/iio/devices/iio:deviceX/in_electricalconductivity_raw
1602 Contact: linux-iio@vger.kernel.org
1604 Raw (unscaled no offset etc.) electric conductivity reading that
1605 can be processed to siemens per meter.
1607 What: /sys/bus/iio/devices/iio:deviceX/in_countY_raw
1609 Contact: linux-iio@vger.kernel.org
1611 Raw counter device counts from channel Y. For quadrature
1612 counters, multiplication by an available [Y]_scale results in
1613 the counts of a single quadrature signal phase from channel Y.
1615 What: /sys/bus/iio/devices/iio:deviceX/in_indexY_raw
1617 Contact: linux-iio@vger.kernel.org
1619 Raw counter device index value from channel Y. This attribute
1620 provides an absolute positional reference (e.g. a pulse once per
1621 revolution) which may be used to home positional systems as
1624 What: /sys/bus/iio/devices/iio:deviceX/in_count_count_direction_available
1626 Contact: linux-iio@vger.kernel.org
1628 A list of possible counting directions which are:
1629 - "up" : counter device is increasing.
1630 - "down": counter device is decreasing.
1632 What: /sys/bus/iio/devices/iio:deviceX/in_countY_count_direction
1634 Contact: linux-iio@vger.kernel.org
1636 Raw counter device counters direction for channel Y.
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