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).
19 Contains trigger type specific elements. These do not
20 generalize well and hence are not documented in this file.
21 X is the IIO index of the trigger.
23 What: /sys/bus/iio/devices/iio:deviceX/buffer
25 Contact: linux-iio@vger.kernel.org
27 Directory of attributes relating to the buffer for the device.
29 What: /sys/bus/iio/devices/iio:deviceX/name
31 Contact: linux-iio@vger.kernel.org
33 Description of the physical chip / device for device X.
34 Typically a part number.
36 What: /sys/bus/iio/devices/iio:deviceX/label
38 Contact: linux-iio@vger.kernel.org
40 Optional symbolic label for a device.
41 This is useful for userspace to be able to better identify an
44 The contents of the label are free-form, but there are some
47 For proximity sensors which give the proximity (of a person) to
48 a certain wlan or wwan antenna the following standardized labels
53 * "proximity-wifi-lte"
54 * "proximity-wifi-left"
55 * "proximity-wifi-right"
57 These are used to indicate to userspace that these proximity
58 sensors may be used to tune transmit power to ensure that
59 Specific Absorption Rate (SAR) limits are honored.
60 The "-left" and "-right" labels are for devices with multiple
63 In some laptops/tablets the standardized proximity sensor labels
64 instead indicate proximity to a specific part of the device:
66 * "proximity-palmrest" indicates proximity to the keyboard's palmrest
67 * "proximity-palmrest-left" indicates proximity to the left part of the palmrest
68 * "proximity-palmrest-right" indicates proximity to the right part of the palmrest
69 * "proximity-lap" indicates the device is being used on someone's lap
71 Note "proximity-lap" is special in that its value may be
72 calculated by firmware from other sensor readings, rather then
73 being a raw sensor reading.
75 For accelerometers used in 2-in-1s with 360° (yoga-style) hinges,
76 which have an accelerometer in both their base and their display,
77 the following standardized labels are used:
82 What: /sys/bus/iio/devices/iio:deviceX/current_timestamp_clock
84 Contact: linux-iio@vger.kernel.org
86 String identifying current posix clock used to timestamp
87 buffered samples and events for device X.
89 What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency
90 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency
91 What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency
92 What: /sys/bus/iio/devices/triggerX/sampling_frequency
94 Contact: linux-iio@vger.kernel.org
96 Some devices have internal clocks. This parameter sets the
97 resulting sampling frequency. In many devices this
98 parameter has an effect on input filters etc. rather than
99 simply controlling when the input is sampled. As this
100 affects data ready triggers, hardware buffers and the sysfs
101 direct access interfaces, it may be found in any of the
102 relevant directories. If it affects all of the above
103 then it is to be found in the base device directory.
105 What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
106 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_sampling_frequency_available
107 What: /sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available
108 What: /sys/.../iio:deviceX/buffer/sampling_frequency_available
109 What: /sys/bus/iio/devices/triggerX/sampling_frequency_available
110 KernelVersion: 2.6.35
111 Contact: linux-iio@vger.kernel.org
113 When the internal sampling clock can only take a specific set of
114 frequencies, we can specify the available values with:
116 - a small discrete set of values like "0 2 4 6 8"
117 - a range with minimum, step and maximum frequencies like
120 What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio
121 KernelVersion: 2.6.38
122 Contact: linux-iio@vger.kernel.org
124 Hardware dependent ADC oversampling. Controls the sampling ratio
125 of the digital filter if available.
127 What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio_available
128 KernelVersion: 2.6.38
129 Contact: linux-iio@vger.kernel.org
131 Hardware dependent values supported by the oversampling filter.
133 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw
134 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw
135 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_raw
136 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_raw
137 KernelVersion: 2.6.35
138 Contact: linux-iio@vger.kernel.org
140 Raw (unscaled no bias removal etc.) voltage measurement from
141 channel Y. In special cases where the channel does not
142 correspond to externally available input one of the named
143 versions may be used. The number must always be specified and
144 unique to allow association with event codes. Units after
145 application of scale and offset are millivolts.
147 Channels with 'i' and 'q' modifiers always exist in pairs and both
148 channels refer to the same signal. The 'i' channel contains the in-phase
149 component of the signal while the 'q' channel contains the quadrature
152 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw
153 KernelVersion: 2.6.35
154 Contact: linux-iio@vger.kernel.org
156 Raw (unscaled) differential voltage measurement equivalent to
157 channel Y - channel Z where these channel numbers apply to the
158 physically equivalent inputs when non differential readings are
159 separately available. In differential only parts, then all that
160 is required is a consistent labeling. Units after application
161 of scale and offset are millivolts.
163 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_raw
164 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw
166 Contact: linux-iio@vger.kernel.org
168 Raw (unscaled no bias removal etc.) current measurement from
169 channel Y. In special cases where the channel does not
170 correspond to externally available input one of the named
171 versions may be used. The number must always be specified and
172 unique to allow association with event codes. Units after
173 application of scale and offset are milliamps.
175 What: /sys/bus/iio/devices/iio:deviceX/in_powerY_raw
177 Contact: linux-iio@vger.kernel.org
179 Raw (unscaled no bias removal etc.) power measurement from
180 channel Y. The number must always be specified and
181 unique to allow association with event codes. Units after
182 application of scale and offset are milliwatts.
184 What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw
186 Contact: linux-iio@vger.kernel.org
188 Raw capacitance measurement from channel Y. Units after
189 application of scale and offset are nanofarads.
191 What: /sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw
193 Contact: linux-iio@vger.kernel.org
195 Raw differential capacitance measurement equivalent to
196 channel Y - channel Z where these channel numbers apply to the
197 physically equivalent inputs when non differential readings are
198 separately available. In differential only parts, then all that
199 is required is a consistent labeling. Units after application
200 of scale and offset are nanofarads.
202 What: /sys/bus/iio/devices/iio:deviceX/in_temp_raw
203 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_raw
204 What: /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw
205 What: /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw
206 What: /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw
207 What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw
208 KernelVersion: 2.6.35
209 Contact: linux-iio@vger.kernel.org
211 Raw (unscaled no bias removal etc.) temperature measurement.
212 If an axis is specified it generally means that the temperature
213 sensor is associated with one part of a compound device (e.g.
214 a gyroscope axis). The ambient and object modifiers distinguish
215 between ambient (reference) and distant temperature for contact-
216 less measurements. Units after application of scale and offset
217 are milli degrees Celsius.
219 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_input
220 KernelVersion: 2.6.38
221 Contact: linux-iio@vger.kernel.org
223 Scaled temperature measurement in milli degrees Celsius.
225 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw
226 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw
227 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw
228 KernelVersion: 2.6.35
229 Contact: linux-iio@vger.kernel.org
231 Acceleration in direction x, y or z (may be arbitrarily assigned
232 but should match other such assignments on device).
233 Has all of the equivalent parameters as per voltageY. Units
234 after application of scale and offset are m/s^2.
236 What: /sys/bus/iio/devices/iio:deviceX/in_gravity_x_raw
237 What: /sys/bus/iio/devices/iio:deviceX/in_gravity_y_raw
238 What: /sys/bus/iio/devices/iio:deviceX/in_gravity_z_raw
240 Contact: linux-iio@vger.kernel.org
242 Gravity in direction x, y or z (may be arbitrarily assigned
243 but should match other such assignments on device).
244 Units after application of scale and offset are m/s^2.
246 What: /sys/bus/iio/devices/iio:deviceX/in_angl_raw
247 What: /sys/bus/iio/devices/iio:deviceX/in_anglY_raw
249 Contact: linux-iio@vger.kernel.org
251 Angle of rotation. Units after application of scale and offset
254 What: /sys/bus/iio/devices/iio:deviceX/in_positionrelative_x_raw
255 What: /sys/bus/iio/devices/iio:deviceX/in_positionrelative_y_raw
257 Contact: linux-iio@vger.kernel.org
259 Relative position in direction x or y on a pad (may be
260 arbitrarily assigned but should match other such assignments on
262 Units after application of scale and offset are milli percents
263 from the pad's size in both directions. Should be calibrated by
266 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
267 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
268 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw
269 KernelVersion: 2.6.35
270 Contact: linux-iio@vger.kernel.org
272 Angular velocity about axis x, y or z (may be arbitrarily
273 assigned). Has all the equivalent parameters as per voltageY.
274 Units after application of scale and offset are radians per
277 What: /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw
278 What: /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw
279 What: /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw
280 KernelVersion: 2.6.35
281 Contact: linux-iio@vger.kernel.org
283 Inclination raw reading about axis x, y or z (may be
284 arbitrarily assigned). Data converted by application of offset
285 and scale to degrees.
287 What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw
288 What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw
289 What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw
290 KernelVersion: 2.6.35
291 Contact: linux-iio@vger.kernel.org
293 Magnetic field along axis x, y or z (may be arbitrarily
294 assigned). Data converted by application of offset
297 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw
298 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw
299 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw
300 KernelVersion: 2.6.36
301 Contact: linux-iio@vger.kernel.org
303 Highest value since some reset condition. These
304 attributes allow access to this and are otherwise
305 the direct equivalent of the <type>Y[_name]_raw attributes.
307 What: /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw
308 KernelVersion: 2.6.36
309 Contact: linux-iio@vger.kernel.org
311 A computed peak value based on the sum squared magnitude of
312 the underlying value in the specified directions.
314 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw
315 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_raw
317 Contact: linux-iio@vger.kernel.org
319 Raw pressure measurement from channel Y. Units after
320 application of scale and offset are kilopascal.
322 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_input
323 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_input
325 Contact: linux-iio@vger.kernel.org
327 Scaled pressure measurement from channel Y, in kilopascal.
329 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw
331 Contact: linux-iio@vger.kernel.org
333 Raw humidity measurement of air. Units after application of
334 scale and offset are milli percent.
336 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input
338 Contact: linux-iio@vger.kernel.org
340 Scaled humidity measurement in milli percent.
342 What: /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw
344 Contact: linux-iio@vger.kernel.org
346 Averaged raw measurement from channel X. The number of values
347 used for averaging is device specific. The converting rules for
348 normal raw values also applies to the averaged raw values.
350 What: /sys/bus/iio/devices/iio:deviceX/in_accel_offset
351 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
352 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
353 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
354 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
355 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
356 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset
357 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset
358 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_offset
359 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_offset
360 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_offset
361 What: /sys/bus/iio/devices/iio:deviceX/in_current_offset
362 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_offset
363 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_offset
364 What: /sys/bus/iio/devices/iio:deviceX/in_current_q_offset
365 What: /sys/bus/iio/devices/iio:deviceX/in_current_i_offset
366 What: /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
367 What: /sys/bus/iio/devices/iio:deviceX/in_temp_offset
368 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
369 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_offset
370 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
371 What: /sys/bus/iio/devices/iio:deviceX/in_magn_offset
372 What: /sys/bus/iio/devices/iio:deviceX/in_rot_offset
373 What: /sys/bus/iio/devices/iio:deviceX/in_angl_offset
374 What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceX_offset
375 KernelVersion: 2.6.35
376 Contact: linux-iio@vger.kernel.org
378 If known for a device, offset to be added to <type>[Y]_raw prior
379 to scaling by <type>[Y]_scale in order to obtain value in the
380 <type> units as specified in <type>[Y]_raw documentation.
381 Not present if the offset is always 0 or unknown. If Y or
382 axis <x|y|z> is not present, then the offset applies to all
383 in channels of <type>.
384 May be writable if a variable offset can be applied on the
385 device. Note that this is different to calibbias which
386 is for devices (or drivers) that apply offsets to compensate
387 for variation between different instances of the part, typically
388 adjusted by using some hardware supported calibration procedure.
389 Calibbias is applied internally, offset is applied in userspace
392 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
393 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_scale
394 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale
395 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
396 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
397 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_scale
398 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_scale
399 What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
400 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
401 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
402 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_scale
403 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale
404 What: /sys/bus/iio/devices/iio:deviceX/in_current_scale
405 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_scale
406 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_scale
407 What: /sys/bus/iio/devices/iio:deviceX/in_current_i_scale
408 What: /sys/bus/iio/devices/iio:deviceX/in_current_q_scale
409 What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale
410 What: /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
411 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
412 What: /sys/bus/iio/devices/iio:deviceX/in_energy_scale
413 What: /sys/bus/iio/devices/iio:deviceX/in_distance_scale
414 What: /sys/bus/iio/devices/iio:deviceX/in_magn_scale
415 What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
416 What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
417 What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale
418 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale
419 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale
420 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale
421 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale
422 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
423 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_scale
424 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
425 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
426 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
427 What: /sys/bus/iio/devices/iio:deviceX/in_countY_scale
428 What: /sys/bus/iio/devices/iio:deviceX/in_angl_scale
429 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_x_scale
430 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_y_scale
431 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_z_scale
432 KernelVersion: 2.6.35
433 Contact: linux-iio@vger.kernel.org
435 If known for a device, scale to be applied to <type>Y[_name]_raw
436 post addition of <type>[Y][_name]_offset in order to obtain the
437 measured value in <type> units as specified in
438 <type>[Y][_name]_raw documentation. If shared across all in
439 channels then Y and <x|y|z> are not present and the value is
440 called <type>[Y][_name]_scale. The peak modifier means this
441 value is applied to <type>Y[_name]_peak_raw values.
443 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
444 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
445 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
446 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
447 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
448 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
449 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
450 What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
451 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
452 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
453 KernelVersion: 2.6.35
454 Contact: linux-iio@vger.kernel.org
456 Hardware applied calibration offset (assumed to fix production
459 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
460 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
461 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale
462 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale
463 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale
464 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale
465 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
466 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
467 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
468 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
469 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
470 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
471 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
472 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
473 What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
474 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
475 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
476 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale
477 KernelVersion: 2.6.35
478 Contact: linux-iio@vger.kernel.org
480 Hardware applied calibration scale factor (assumed to fix
481 production inaccuracies). If shared across all channels,
482 <type>_calibscale is used.
484 What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender
485 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender
486 What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender
487 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender
489 Contact: linux-iio@vger.kernel.org
491 Gender of the user (e.g.: male, female) used by some pedometers
492 to compute the stride length, distance, speed and activity
495 What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available
496 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available
497 What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available
498 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available
500 Contact: linux-iio@vger.kernel.org
502 Lists all available gender values (e.g.: male, female).
504 What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibheight
505 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibheight
506 What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibheight
507 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight
509 Contact: linux-iio@vger.kernel.org
511 Height of the user (in meters) used by some pedometers
512 to compute the stride length, distance, speed and activity
515 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight
517 Contact: linux-iio@vger.kernel.org
519 Weight of the user (in kg). It is needed by some pedometers
520 to compute the calories burnt by the user.
522 What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
523 What: /sys/.../iio:deviceX/in_anglvel_scale_available
524 What: /sys/.../iio:deviceX/in_magn_scale_available
525 What: /sys/.../iio:deviceX/in_illuminance_scale_available
526 What: /sys/.../iio:deviceX/in_intensity_scale_available
527 What: /sys/.../iio:deviceX/in_proximity_scale_available
528 What: /sys/.../iio:deviceX/in_voltageX_scale_available
529 What: /sys/.../iio:deviceX/in_voltage-voltage_scale_available
530 What: /sys/.../iio:deviceX/out_voltageX_scale_available
531 What: /sys/.../iio:deviceX/out_altvoltageX_scale_available
532 What: /sys/.../iio:deviceX/in_capacitance_scale_available
533 What: /sys/.../iio:deviceX/in_pressure_scale_available
534 What: /sys/.../iio:deviceX/in_pressureY_scale_available
535 KernelVersion: 2.6.35
536 Contact: linux-iio@vger.kernel.org
538 If a discrete set of scale values is available, they
539 are listed in this attribute.
541 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
542 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_hardwaregain
543 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
544 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
545 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
546 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
547 KernelVersion: 2.6.35
548 Contact: linux-iio@vger.kernel.org
550 Hardware applied gain factor. If shared across all channels,
551 <type>_hardwaregain is used.
553 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_hardwaregain_available
555 Contact: linux-iio@vger.kernel.org
557 Lists all available hardware applied gain factors. Shared across all
560 What: /sys/.../in_accel_filter_low_pass_3db_frequency
561 What: /sys/.../in_magn_filter_low_pass_3db_frequency
562 What: /sys/.../in_anglvel_filter_low_pass_3db_frequency
564 Contact: linux-iio@vger.kernel.org
566 If a known or controllable low pass filter is applied
567 to the underlying data channel, then this parameter
568 gives the 3dB frequency of the filter in Hz.
570 What: /sys/.../in_accel_filter_high_pass_3db_frequency
571 What: /sys/.../in_anglvel_filter_high_pass_3db_frequency
572 What: /sys/.../in_magn_filter_high_pass_3db_frequency
574 Contact: linux-iio@vger.kernel.org
576 If a known or controllable high pass filter is applied
577 to the underlying data channel, then this parameter
578 gives the 3dB frequency of the filter in Hz.
580 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw
581 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw
582 KernelVersion: 2.6.37
583 Contact: linux-iio@vger.kernel.org
585 Raw (unscaled, no bias etc.) output voltage for
586 channel Y. The number must always be specified and
587 unique if the output corresponds to a single channel.
588 While DAC like devices typically use out_voltage,
589 a continuous frequency generating device, such as
590 a DDS or PLL should use out_altvoltage.
592 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw
593 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw
594 KernelVersion: 2.6.37
595 Contact: linux-iio@vger.kernel.org
597 Raw (unscaled, no bias etc.) output voltage for an aggregate of
598 channel Y, channel Z, etc. This interface is available in cases
599 where a single output sets the value for multiple channels
602 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode
603 What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode
604 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode
605 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode
606 KernelVersion: 2.6.38
607 Contact: linux-iio@vger.kernel.org
609 Specifies the output powerdown mode.
610 DAC output stage is disconnected from the amplifier and
611 1kohm_to_gnd: connected to ground via an 1kOhm resistor,
612 2.5kohm_to_gnd: connected to ground via a 2.5kOhm resistor,
613 6kohm_to_gnd: connected to ground via a 6kOhm resistor,
614 20kohm_to_gnd: connected to ground via a 20kOhm resistor,
615 90kohm_to_gnd: connected to ground via a 90kOhm resistor,
616 100kohm_to_gnd: connected to ground via an 100kOhm resistor,
617 125kohm_to_gnd: connected to ground via an 125kOhm resistor,
618 500kohm_to_gnd: connected to ground via a 500kOhm resistor,
619 640kohm_to_gnd: connected to ground via a 640kOhm resistor,
620 three_state: left floating.
621 For a list of available output power down options read
622 outX_powerdown_mode_available. If Y is not present the
623 mode is shared across all outputs.
625 What: /sys/.../iio:deviceX/out_voltageY_powerdown_mode_available
626 What: /sys/.../iio:deviceX/out_voltage_powerdown_mode_available
627 What: /sys/.../iio:deviceX/out_altvoltageY_powerdown_mode_available
628 What: /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available
629 KernelVersion: 2.6.38
630 Contact: linux-iio@vger.kernel.org
632 Lists all available output power down modes.
633 If Y is not present the mode is shared across all outputs.
635 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown
636 What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown
637 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown
638 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown
639 KernelVersion: 2.6.38
640 Contact: linux-iio@vger.kernel.org
642 Writing 1 causes output Y to enter the power down mode specified
643 by the corresponding outY_powerdown_mode. DAC output stage is
644 disconnected from the amplifier. Clearing returns to normal
645 operation. Y may be suppressed if all outputs are controlled
648 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency
650 Contact: linux-iio@vger.kernel.org
652 Output frequency for channel Y in Hz. The number must always be
653 specified and unique if the output corresponds to a single
656 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase
658 Contact: linux-iio@vger.kernel.org
660 Phase in radians of one frequency/clock output Y
661 (out_altvoltageY) relative to another frequency/clock output
662 (out_altvoltageZ) of the device X. The number must always be
663 specified and unique if the output corresponds to a single
666 What: /sys/bus/iio/devices/iio:deviceX/events
667 KernelVersion: 2.6.35
668 Contact: linux-iio@vger.kernel.org
670 Configuration of which hardware generated events are passed up
673 What: /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en
674 What: /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en
675 What: /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en
676 What: /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en
677 What: /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en
678 What: /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en
679 What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en
680 What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en
681 What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en
682 What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en
683 What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en
684 What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en
685 What: /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en
686 What: /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en
687 What: /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en
688 What: /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en
689 What: /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en
690 What: /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en
691 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en
692 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en
693 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en
694 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en
695 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en
696 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en
697 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en
698 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en
699 What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en
700 What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en
701 What: /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en
702 What: /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en
703 What: /sys/.../iio:deviceX/events/in_voltageY_thresh_either_en
704 What: /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
705 What: /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
706 What: /sys/.../iio:deviceX/events/in_capacitanceY_thresh_rising_en
707 What: /sys/.../iio:deviceX/events/in_capacitanceY_thresh_falling_en
708 KernelVersion: 2.6.37
709 Contact: linux-iio@vger.kernel.org
711 Event generated when channel passes a threshold in the specified
712 (_rising|_falling) direction. If the direction is not specified,
713 then either the device will report an event which ever direction
714 a single threshold value is passed in (e.g.
715 <type>[Y][_name]_<raw|input>_thresh_value) or
716 <type>[Y][_name]_<raw|input>_thresh_rising_value and
717 <type>[Y][_name]_<raw|input>_thresh_falling_value may take
718 different values, but the device can only enable both thresholds
721 Note the driver will assume the last p events requested are
722 to be enabled where p is how many it supports (which may vary
723 depending on the exact set requested. So if you want to be
724 sure you have set what you think you have, check the contents of
725 these attributes after everything is configured. Drivers may
726 have to buffer any parameters so that they are consistent when
727 a given event type is enabled at a future point (and not those for
728 whatever event was previously enabled).
730 What: /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en
731 What: /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en
732 What: /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en
733 What: /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en
734 What: /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en
735 What: /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en
736 What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en
737 What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en
738 What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en
739 What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en
740 What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en
741 What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en
742 What: /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en
743 What: /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en
744 What: /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en
745 What: /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en
746 What: /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en
747 What: /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en
748 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en
749 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en
750 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en
751 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en
752 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en
753 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en
754 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en
755 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en
756 What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en
757 What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en
758 What: /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en
759 What: /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en
760 What: /sys/.../iio:deviceX/events/in_tempY_roc_rising_en
761 What: /sys/.../iio:deviceX/events/in_tempY_roc_falling_en
762 KernelVersion: 2.6.37
763 Contact: linux-iio@vger.kernel.org
765 Event generated when channel passes a threshold on the rate of
766 change (1st differential) in the specified (_rising|_falling)
767 direction. If the direction is not specified, then either the
768 device will report an event which ever direction a single
769 threshold value is passed in (e.g.
770 <type>[Y][_name]_<raw|input>_roc_value) or
771 <type>[Y][_name]_<raw|input>_roc_rising_value and
772 <type>[Y][_name]_<raw|input>_roc_falling_value may take
773 different values, but the device can only enable both rate of
774 change thresholds or neither.
776 Note the driver will assume the last p events requested are
777 to be enabled where p is however many it supports (which may
778 vary depending on the exact set requested. So if you want to be
779 sure you have set what you think you have, check the contents of
780 these attributes after everything is configured. Drivers may
781 have to buffer any parameters so that they are consistent when
782 a given event type is enabled a future point (and not those for
783 whatever event was previously enabled).
785 What: /sys/.../events/in_capacitanceY_adaptive_thresh_rising_en
786 What: /sys/.../events/in_capacitanceY_adaptive_thresh_falling_en
788 Contact: linux-iio@vger.kernel.org
790 Adaptive thresholds are similar to normal fixed thresholds
791 but the value is expressed as an offset from a value which
792 provides a low frequency approximation of the channel itself.
793 Thus these detect if a rapid change occurs in the specified
794 direction which crosses tracking value + offset.
795 Tracking value calculation is devices specific.
797 What: /sys/.../in_capacitanceY_adaptive_thresh_rising_timeout
798 What: /sys/.../in_capacitanceY_adaptive_thresh_falling_timeout
800 Contact: linux-iio@vger.kernel.org
802 When adaptive thresholds are used, the tracking signal
803 may adjust too slowly to step changes in the raw signal.
804 Thus these specify the time in seconds for which the
805 difference between the slow tracking signal and the raw
806 signal is allowed to remain out-of-range before a reset
807 event occurs in which the tracking signal is made equal
808 to the raw signal, allowing slow tracking to resume and the
809 adaptive threshold event detection to function as expected.
811 What: /sys/.../events/in_accel_thresh_rising_value
812 What: /sys/.../events/in_accel_thresh_falling_value
813 What: /sys/.../events/in_accel_x_raw_thresh_rising_value
814 What: /sys/.../events/in_accel_x_raw_thresh_falling_value
815 What: /sys/.../events/in_accel_y_raw_thresh_rising_value
816 What: /sys/.../events/in_accel_y_raw_thresh_falling_value
817 What: /sys/.../events/in_accel_z_raw_thresh_rising_value
818 What: /sys/.../events/in_accel_z_raw_thresh_falling_value
819 What: /sys/.../events/in_anglvel_x_raw_thresh_rising_value
820 What: /sys/.../events/in_anglvel_x_raw_thresh_falling_value
821 What: /sys/.../events/in_anglvel_y_raw_thresh_rising_value
822 What: /sys/.../events/in_anglvel_y_raw_thresh_falling_value
823 What: /sys/.../events/in_anglvel_z_raw_thresh_rising_value
824 What: /sys/.../events/in_anglvel_z_raw_thresh_falling_value
825 What: /sys/.../events/in_magn_x_raw_thresh_rising_value
826 What: /sys/.../events/in_magn_x_raw_thresh_falling_value
827 What: /sys/.../events/in_magn_y_raw_thresh_rising_value
828 What: /sys/.../events/in_magn_y_raw_thresh_falling_value
829 What: /sys/.../events/in_magn_z_raw_thresh_rising_value
830 What: /sys/.../events/in_magn_z_raw_thresh_falling_value
831 What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value
832 What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value
833 What: /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value
834 What: /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value
835 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value
836 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value
837 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value
838 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value
839 What: /sys/.../events/in_voltageY_supply_raw_thresh_rising_value
840 What: /sys/.../events/in_voltageY_supply_raw_thresh_falling_value
841 What: /sys/.../events/in_voltageY_raw_thresh_rising_value
842 What: /sys/.../events/in_voltageY_raw_thresh_falling_value
843 What: /sys/.../events/in_tempY_raw_thresh_rising_value
844 What: /sys/.../events/in_tempY_raw_thresh_falling_value
845 What: /sys/.../events/in_illuminance0_thresh_falling_value
846 What: /sys/.../events/in_illuminance0_thresh_rising_value
847 What: /sys/.../events/in_proximity0_thresh_falling_value
848 What: /sys/.../events/in_proximity0_thresh_rising_value
849 What: /sys/.../events/in_illuminance_thresh_rising_value
850 What: /sys/.../events/in_illuminance_thresh_falling_value
851 What: /sys/.../events/in_capacitanceY_thresh_rising_value
852 What: /sys/.../events/in_capacitanceY_thresh_falling_value
853 What: /sys/.../events/in_capacitanceY_thresh_adaptive_rising_value
854 What: /sys/.../events/in_capacitanceY_thresh_falling_rising_value
855 KernelVersion: 2.6.37
856 Contact: linux-iio@vger.kernel.org
858 Specifies the value of threshold that the device is comparing
859 against for the events enabled by
860 <type>Y[_name]_thresh[_rising|falling]_en.
862 If separate attributes exist for the two directions, but
863 direction is not specified for this attribute, then a single
864 threshold value applies to both directions.
866 The raw or input element of the name indicates whether the
867 value is in raw device units or in processed units (as _raw
868 and _input do on sysfs direct channel read attributes).
870 What: /sys/.../events/in_accel_scale
871 What: /sys/.../events/in_accel_peak_scale
872 What: /sys/.../events/in_anglvel_scale
873 What: /sys/.../events/in_magn_scale
874 What: /sys/.../events/in_rot_from_north_magnetic_scale
875 What: /sys/.../events/in_rot_from_north_true_scale
876 What: /sys/.../events/in_voltage_scale
877 What: /sys/.../events/in_voltage_supply_scale
878 What: /sys/.../events/in_temp_scale
879 What: /sys/.../events/in_illuminance_scale
880 What: /sys/.../events/in_proximity_scale
882 Contact: linux-iio@vger.kernel.org
884 Specifies the conversion factor from the standard units
885 to device specific units used to set the event trigger
888 What: /sys/.../events/in_accel_x_thresh_rising_hysteresis
889 What: /sys/.../events/in_accel_x_thresh_falling_hysteresis
890 What: /sys/.../events/in_accel_x_thresh_either_hysteresis
891 What: /sys/.../events/in_accel_y_thresh_rising_hysteresis
892 What: /sys/.../events/in_accel_y_thresh_falling_hysteresis
893 What: /sys/.../events/in_accel_y_thresh_either_hysteresis
894 What: /sys/.../events/in_accel_z_thresh_rising_hysteresis
895 What: /sys/.../events/in_accel_z_thresh_falling_hysteresis
896 What: /sys/.../events/in_accel_z_thresh_either_hysteresis
897 What: /sys/.../events/in_anglvel_x_thresh_rising_hysteresis
898 What: /sys/.../events/in_anglvel_x_thresh_falling_hysteresis
899 What: /sys/.../events/in_anglvel_x_thresh_either_hysteresis
900 What: /sys/.../events/in_anglvel_y_thresh_rising_hysteresis
901 What: /sys/.../events/in_anglvel_y_thresh_falling_hysteresis
902 What: /sys/.../events/in_anglvel_y_thresh_either_hysteresis
903 What: /sys/.../events/in_anglvel_z_thresh_rising_hysteresis
904 What: /sys/.../events/in_anglvel_z_thresh_falling_hysteresis
905 What: /sys/.../events/in_anglvel_z_thresh_either_hysteresis
906 What: /sys/.../events/in_magn_x_thresh_rising_hysteresis
907 What: /sys/.../events/in_magn_x_thresh_falling_hysteresis
908 What: /sys/.../events/in_magn_x_thresh_either_hysteresis
909 What: /sys/.../events/in_magn_y_thresh_rising_hysteresis
910 What: /sys/.../events/in_magn_y_thresh_falling_hysteresis
911 What: /sys/.../events/in_magn_y_thresh_either_hysteresis
912 What: /sys/.../events/in_magn_z_thresh_rising_hysteresis
913 What: /sys/.../events/in_magn_z_thresh_falling_hysteresis
914 What: /sys/.../events/in_magn_z_thresh_either_hysteresis
915 What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis
916 What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis
917 What: /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis
918 What: /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis
919 What: /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis
920 What: /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis
921 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis
922 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis
923 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis
924 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis
925 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis
926 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis
927 What: /sys/.../events/in_voltageY_thresh_rising_hysteresis
928 What: /sys/.../events/in_voltageY_thresh_falling_hysteresis
929 What: /sys/.../events/in_voltageY_thresh_either_hysteresis
930 What: /sys/.../events/in_tempY_thresh_rising_hysteresis
931 What: /sys/.../events/in_tempY_thresh_falling_hysteresis
932 What: /sys/.../events/in_tempY_thresh_either_hysteresis
933 What: /sys/.../events/in_illuminance0_thresh_falling_hysteresis
934 What: /sys/.../events/in_illuminance0_thresh_rising_hysteresis
935 What: /sys/.../events/in_illuminance0_thresh_either_hysteresis
936 What: /sys/.../events/in_proximity0_thresh_falling_hysteresis
937 What: /sys/.../events/in_proximity0_thresh_rising_hysteresis
938 What: /sys/.../events/in_proximity0_thresh_either_hysteresis
940 Contact: linux-iio@vger.kernel.org
942 Specifies the hysteresis of threshold that the device is comparing
943 against for the events enabled by
944 <type>Y[_name]_thresh[_(rising|falling)]_hysteresis.
945 If separate attributes exist for the two directions, but
946 direction is not specified for this attribute, then a single
947 hysteresis value applies to both directions.
949 For falling events the hysteresis is added to the _value attribute for
950 this event to get the upper threshold for when the event goes back to
951 normal, for rising events the hysteresis is subtracted from the _value
952 attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200
953 and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event
954 will get activated once in_voltage0_raw goes above 1200 and will become
955 deactivated again once the value falls below 1150.
957 What: /sys/.../events/in_accel_x_raw_roc_rising_value
958 What: /sys/.../events/in_accel_x_raw_roc_falling_value
959 What: /sys/.../events/in_accel_y_raw_roc_rising_value
960 What: /sys/.../events/in_accel_y_raw_roc_falling_value
961 What: /sys/.../events/in_accel_z_raw_roc_rising_value
962 What: /sys/.../events/in_accel_z_raw_roc_falling_value
963 What: /sys/.../events/in_anglvel_x_raw_roc_rising_value
964 What: /sys/.../events/in_anglvel_x_raw_roc_falling_value
965 What: /sys/.../events/in_anglvel_y_raw_roc_rising_value
966 What: /sys/.../events/in_anglvel_y_raw_roc_falling_value
967 What: /sys/.../events/in_anglvel_z_raw_roc_rising_value
968 What: /sys/.../events/in_anglvel_z_raw_roc_falling_value
969 What: /sys/.../events/in_magn_x_raw_roc_rising_value
970 What: /sys/.../events/in_magn_x_raw_roc_falling_value
971 What: /sys/.../events/in_magn_y_raw_roc_rising_value
972 What: /sys/.../events/in_magn_y_raw_roc_falling_value
973 What: /sys/.../events/in_magn_z_raw_roc_rising_value
974 What: /sys/.../events/in_magn_z_raw_roc_falling_value
975 What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value
976 What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value
977 What: /sys/.../events/in_rot_from_north_true_raw_roc_rising_value
978 What: /sys/.../events/in_rot_from_north_true_raw_roc_falling_value
979 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value
980 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value
981 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value
982 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value
983 What: /sys/.../events/in_voltageY_supply_raw_roc_rising_value
984 What: /sys/.../events/in_voltageY_supply_raw_roc_falling_value
985 What: /sys/.../events/in_voltageY_raw_roc_rising_value
986 What: /sys/.../events/in_voltageY_raw_roc_falling_value
987 What: /sys/.../events/in_tempY_raw_roc_rising_value
988 What: /sys/.../events/in_tempY_raw_roc_falling_value
989 KernelVersion: 2.6.37
990 Contact: linux-iio@vger.kernel.org
992 Specifies the value of rate of change threshold that the
993 device is comparing against for the events enabled by
994 <type>[Y][_name]_roc[_rising|falling]_en.
996 If separate attributes exist for the two directions,
997 but direction is not specified for this attribute,
998 then a single threshold value applies to both directions.
999 The raw or input element of the name indicates whether the
1000 value is in raw device units or in processed units (as _raw
1001 and _input do on sysfs direct channel read attributes).
1003 What: /sys/.../events/in_accel_x_thresh_rising_period
1004 What: /sys/.../events/in_accel_x_thresh_falling_period
1005 What: /sys/.../events/in_accel_x_roc_rising_period
1006 What: /sys/.../events/in_accel_x_roc_falling_period
1007 What: /sys/.../events/in_accel_y_thresh_rising_period
1008 What: /sys/.../events/in_accel_y_thresh_falling_period
1009 What: /sys/.../events/in_accel_y_roc_rising_period
1010 What: /sys/.../events/in_accel_y_roc_falling_period
1011 What: /sys/.../events/in_accel_z_thresh_rising_period
1012 What: /sys/.../events/in_accel_z_thresh_falling_period
1013 What: /sys/.../events/in_accel_z_roc_rising_period
1014 What: /sys/.../events/in_accel_z_roc_falling_period
1015 What: /sys/.../events/in_anglvel_x_thresh_rising_period
1016 What: /sys/.../events/in_anglvel_x_thresh_falling_period
1017 What: /sys/.../events/in_anglvel_x_roc_rising_period
1018 What: /sys/.../events/in_anglvel_x_roc_falling_period
1019 What: /sys/.../events/in_anglvel_y_thresh_rising_period
1020 What: /sys/.../events/in_anglvel_y_thresh_falling_period
1021 What: /sys/.../events/in_anglvel_y_roc_rising_period
1022 What: /sys/.../events/in_anglvel_y_roc_falling_period
1023 What: /sys/.../events/in_anglvel_z_thresh_rising_period
1024 What: /sys/.../events/in_anglvel_z_thresh_falling_period
1025 What: /sys/.../events/in_anglvel_z_roc_rising_period
1026 What: /sys/.../events/in_anglvel_z_roc_falling_period
1027 What: /sys/.../events/in_magn_x_thresh_rising_period
1028 What: /sys/.../events/in_magn_x_thresh_falling_period
1029 What: /sys/.../events/in_magn_x_roc_rising_period
1030 What: /sys/.../events/in_magn_x_roc_falling_period
1031 What: /sys/.../events/in_magn_y_thresh_rising_period
1032 What: /sys/.../events/in_magn_y_thresh_falling_period
1033 What: /sys/.../events/in_magn_y_roc_rising_period
1034 What: /sys/.../events/in_magn_y_roc_falling_period
1035 What: /sys/.../events/in_magn_z_thresh_rising_period
1036 What: /sys/.../events/in_magn_z_thresh_falling_period
1037 What: /sys/.../events/in_magn_z_roc_rising_period
1038 What: /sys/.../events/in_magn_z_roc_falling_period
1039 What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period
1040 What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period
1041 What: /sys/.../events/in_rot_from_north_magnetic_roc_rising_period
1042 What: /sys/.../events/in_rot_from_north_magnetic_roc_falling_period
1043 What: /sys/.../events/in_rot_from_north_true_thresh_rising_period
1044 What: /sys/.../events/in_rot_from_north_true_thresh_falling_period
1045 What: /sys/.../events/in_rot_from_north_true_roc_rising_period
1046 What: /sys/.../events/in_rot_from_north_true_roc_falling_period
1047 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period
1048 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period
1049 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period
1050 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period
1051 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period
1052 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period
1053 What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period
1054 What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period
1055 What: /sys/.../events/in_voltageY_supply_thresh_rising_period
1056 What: /sys/.../events/in_voltageY_supply_thresh_falling_period
1057 What: /sys/.../events/in_voltageY_supply_roc_rising_period
1058 What: /sys/.../events/in_voltageY_supply_roc_falling_period
1059 What: /sys/.../events/in_voltageY_thresh_rising_period
1060 What: /sys/.../events/in_voltageY_thresh_falling_period
1061 What: /sys/.../events/in_voltageY_roc_rising_period
1062 What: /sys/.../events/in_voltageY_roc_falling_period
1063 What: /sys/.../events/in_tempY_thresh_rising_period
1064 What: /sys/.../events/in_tempY_thresh_falling_period
1065 What: /sys/.../events/in_tempY_roc_rising_period
1066 What: /sys/.../events/in_tempY_roc_falling_period
1067 What: /sys/.../events/in_accel_x&y&z_mag_falling_period
1068 What: /sys/.../events/in_intensity0_thresh_period
1069 What: /sys/.../events/in_proximity0_thresh_period
1070 What: /sys/.../events/in_activity_still_thresh_rising_period
1071 What: /sys/.../events/in_activity_still_thresh_falling_period
1072 What: /sys/.../events/in_activity_walking_thresh_rising_period
1073 What: /sys/.../events/in_activity_walking_thresh_falling_period
1074 What: /sys/.../events/in_activity_jogging_thresh_rising_period
1075 What: /sys/.../events/in_activity_jogging_thresh_falling_period
1076 What: /sys/.../events/in_activity_running_thresh_rising_period
1077 What: /sys/.../events/in_activity_running_thresh_falling_period
1078 What: /sys/.../events/in_illuminance_thresh_either_period
1079 KernelVersion: 2.6.37
1080 Contact: linux-iio@vger.kernel.org
1082 Period of time (in seconds) for which the condition must be
1083 met before an event is generated. If direction is not
1084 specified then this period applies to both directions.
1086 What: /sys/.../events/in_accel_thresh_rising_low_pass_filter_3db
1087 What: /sys/.../events/in_anglvel_thresh_rising_low_pass_filter_3db
1088 What: /sys/.../events/in_magn_thresh_rising_low_pass_filter_3db
1090 Contact: linux-iio@vger.kernel.org
1092 If a low pass filter can be applied to the event generation
1093 this property gives its 3db frequency in Hz.
1094 A value of zero disables the filter.
1096 What: /sys/.../events/in_accel_thresh_rising_high_pass_filter_3db
1097 What: /sys/.../events/in_anglvel_thresh_rising_high_pass_filter_3db
1098 What: /sys/.../events/in_magn_thresh_rising_high_pass_filter_3db
1100 Contact: linux-iio@vger.kernel.org
1102 If a high pass filter can be applied to the event generation
1103 this property gives its 3db frequency in Hz.
1104 A value of zero disables the filter.
1106 What: /sys/.../events/in_activity_still_thresh_rising_en
1107 What: /sys/.../events/in_activity_still_thresh_falling_en
1108 What: /sys/.../events/in_activity_walking_thresh_rising_en
1109 What: /sys/.../events/in_activity_walking_thresh_falling_en
1110 What: /sys/.../events/in_activity_jogging_thresh_rising_en
1111 What: /sys/.../events/in_activity_jogging_thresh_falling_en
1112 What: /sys/.../events/in_activity_running_thresh_rising_en
1113 What: /sys/.../events/in_activity_running_thresh_falling_en
1115 Contact: linux-iio@vger.kernel.org
1117 Enables or disables activity events. Depending on direction
1118 an event is generated when sensor ENTERS or LEAVES a given state.
1120 What: /sys/.../events/in_activity_still_thresh_rising_value
1121 What: /sys/.../events/in_activity_still_thresh_falling_value
1122 What: /sys/.../events/in_activity_walking_thresh_rising_value
1123 What: /sys/.../events/in_activity_walking_thresh_falling_value
1124 What: /sys/.../events/in_activity_jogging_thresh_rising_value
1125 What: /sys/.../events/in_activity_jogging_thresh_falling_value
1126 What: /sys/.../events/in_activity_running_thresh_rising_value
1127 What: /sys/.../events/in_activity_running_thresh_falling_value
1129 Contact: linux-iio@vger.kernel.org
1131 Confidence value (in units as percentage) to be used
1132 for deciding when an event should be generated. E.g for
1133 running: If the confidence value reported by the sensor
1134 is greater than in_activity_running_thresh_rising_value
1135 then the sensor ENTERS running state. Conversely, if the
1136 confidence value reported by the sensor is lower than
1137 in_activity_running_thresh_falling_value then the sensor
1138 is LEAVING running state.
1140 What: /sys/.../iio:deviceX/events/in_accel_mag_en
1141 What: /sys/.../iio:deviceX/events/in_accel_mag_rising_en
1142 What: /sys/.../iio:deviceX/events/in_accel_mag_falling_en
1143 What: /sys/.../iio:deviceX/events/in_accel_x_mag_en
1144 What: /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en
1145 What: /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en
1146 What: /sys/.../iio:deviceX/events/in_accel_y_mag_en
1147 What: /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en
1148 What: /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en
1149 What: /sys/.../iio:deviceX/events/in_accel_z_mag_en
1150 What: /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en
1151 What: /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en
1152 What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en
1153 What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en
1154 KernelVersion: 2.6.37
1155 Contact: linux-iio@vger.kernel.org
1157 Similar to in_accel_x_thresh[_rising|_falling]_en, but here the
1158 magnitude of the channel is compared to the threshold, not its
1161 What: /sys/.../events/in_accel_raw_mag_value
1162 What: /sys/.../events/in_accel_x_raw_mag_rising_value
1163 What: /sys/.../events/in_accel_y_raw_mag_rising_value
1164 What: /sys/.../events/in_accel_z_raw_mag_rising_value
1165 KernelVersion: 2.6.37
1166 Contact: linux-iio@vger.kernel.org
1168 The value to which the magnitude of the channel is compared. If
1169 number or direction is not specified, applies to all channels of
1172 What: /sys/.../events/in_steps_change_en
1174 Contact: linux-iio@vger.kernel.org
1176 Event generated when channel passes a threshold on the absolute
1177 change in value. E.g. for steps: a step change event is
1178 generated each time the user takes N steps, where N is set using
1179 in_steps_change_value.
1181 What: /sys/.../events/in_steps_change_value
1183 Contact: linux-iio@vger.kernel.org
1185 Specifies the value of change threshold that the
1186 device is comparing against for the events enabled by
1187 <type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps:
1188 if set to 3, a step change event will be generated every 3
1191 What: /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger
1192 KernelVersion: 2.6.35
1193 Contact: linux-iio@vger.kernel.org
1195 The name of the trigger source being used, as per string given
1196 in /sys/class/iio/triggerY/name.
1198 What: /sys/bus/iio/devices/iio:deviceX/buffer/length
1199 KernelVersion: 2.6.35
1200 What: /sys/bus/iio/devices/iio:deviceX/bufferY/length
1202 Contact: linux-iio@vger.kernel.org
1204 Number of scans contained by the buffer.
1206 What: /sys/bus/iio/devices/iio:deviceX/buffer/enable
1207 KernelVersion: 2.6.35
1208 What: /sys/bus/iio/devices/iio:deviceX/bufferY/enable
1210 Contact: linux-iio@vger.kernel.org
1212 Actually start the buffer capture up. Will start trigger
1213 if first device and appropriate.
1215 What: /sys/bus/iio/devices/iio:deviceX/scan_elements
1216 KernelVersion: 2.6.37
1217 What: /sys/bus/iio/devices/iio:deviceX/bufferY
1219 Contact: linux-iio@vger.kernel.org
1221 Directory containing interfaces for elements that will be
1222 captured for a single triggered sample set in the buffer.
1224 Since kernel 5.11 the scan_elements attributes are merged into
1225 the bufferY directory, to be configurable per buffer.
1227 What: /sys/.../iio:deviceX/scan_elements/in_accel_x_en
1228 What: /sys/.../iio:deviceX/scan_elements/in_accel_y_en
1229 What: /sys/.../iio:deviceX/scan_elements/in_accel_z_en
1230 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en
1231 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en
1232 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en
1233 What: /sys/.../iio:deviceX/scan_elements/in_magn_x_en
1234 What: /sys/.../iio:deviceX/scan_elements/in_magn_y_en
1235 What: /sys/.../iio:deviceX/scan_elements/in_magn_z_en
1236 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en
1237 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en
1238 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en
1239 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en
1240 What: /sys/.../iio:deviceX/scan_elements/in_timestamp_en
1241 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en
1242 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_en
1243 What: /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
1244 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_en
1245 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_en
1246 What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_en
1247 What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_en
1248 What: /sys/.../iio:deviceX/scan_elements/in_incli_x_en
1249 What: /sys/.../iio:deviceX/scan_elements/in_incli_y_en
1250 What: /sys/.../iio:deviceX/scan_elements/in_pressureY_en
1251 What: /sys/.../iio:deviceX/scan_elements/in_pressure_en
1252 What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en
1253 What: /sys/.../iio:deviceX/scan_elements/in_proximity_en
1254 KernelVersion: 2.6.37
1255 What: /sys/.../iio:deviceX/bufferY/in_accel_x_en
1256 What: /sys/.../iio:deviceX/bufferY/in_accel_y_en
1257 What: /sys/.../iio:deviceX/bufferY/in_accel_z_en
1258 What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_en
1259 What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_en
1260 What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_en
1261 What: /sys/.../iio:deviceX/bufferY/in_magn_x_en
1262 What: /sys/.../iio:deviceX/bufferY/in_magn_y_en
1263 What: /sys/.../iio:deviceX/bufferY/in_magn_z_en
1264 What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_en
1265 What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_en
1266 What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_tilt_comp_en
1267 What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_tilt_comp_en
1268 What: /sys/.../iio:deviceX/bufferY/in_timestamp_en
1269 What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_en
1270 What: /sys/.../iio:deviceX/bufferY/in_voltageY_en
1271 What: /sys/.../iio:deviceX/bufferY/in_voltageY-voltageZ_en
1272 What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_en
1273 What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_en
1274 What: /sys/.../iio:deviceX/bufferY/in_voltage_i_en
1275 What: /sys/.../iio:deviceX/bufferY/in_voltage_q_en
1276 What: /sys/.../iio:deviceX/bufferY/in_incli_x_en
1277 What: /sys/.../iio:deviceX/bufferY/in_incli_y_en
1278 What: /sys/.../iio:deviceX/bufferY/in_pressureY_en
1279 What: /sys/.../iio:deviceX/bufferY/in_pressure_en
1280 What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_en
1281 What: /sys/.../iio:deviceX/bufferY/in_proximity_en
1283 Contact: linux-iio@vger.kernel.org
1285 Scan element control for triggered data capture.
1287 What: /sys/.../iio:deviceX/scan_elements/in_accel_type
1288 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_type
1289 What: /sys/.../iio:deviceX/scan_elements/in_magn_type
1290 What: /sys/.../iio:deviceX/scan_elements/in_incli_type
1291 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_type
1292 What: /sys/.../iio:deviceX/scan_elements/in_voltage_type
1293 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type
1294 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_type
1295 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_type
1296 What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_type
1297 What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_type
1298 What: /sys/.../iio:deviceX/scan_elements/in_timestamp_type
1299 What: /sys/.../iio:deviceX/scan_elements/in_pressureY_type
1300 What: /sys/.../iio:deviceX/scan_elements/in_pressure_type
1301 What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type
1302 What: /sys/.../iio:deviceX/scan_elements/in_proximity_type
1303 KernelVersion: 2.6.37
1304 What: /sys/.../iio:deviceX/bufferY/in_accel_type
1305 What: /sys/.../iio:deviceX/bufferY/in_anglvel_type
1306 What: /sys/.../iio:deviceX/bufferY/in_magn_type
1307 What: /sys/.../iio:deviceX/bufferY/in_incli_type
1308 What: /sys/.../iio:deviceX/bufferY/in_voltageY_type
1309 What: /sys/.../iio:deviceX/bufferY/in_voltage_type
1310 What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_type
1311 What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_type
1312 What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_type
1313 What: /sys/.../iio:deviceX/bufferY/in_voltage_i_type
1314 What: /sys/.../iio:deviceX/bufferY/in_voltage_q_type
1315 What: /sys/.../iio:deviceX/bufferY/in_timestamp_type
1316 What: /sys/.../iio:deviceX/bufferY/in_pressureY_type
1317 What: /sys/.../iio:deviceX/bufferY/in_pressure_type
1318 What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_type
1319 What: /sys/.../iio:deviceX/bufferY/in_proximity_type
1321 Contact: linux-iio@vger.kernel.org
1323 Description of the scan element data storage within the buffer
1324 and hence the form in which it is read from user-space.
1325 Form is [be|le]:[s|u]bits/storagebits[>>shift].
1326 be or le specifies big or little endian. s or u specifies if
1327 signed (2's complement) or unsigned. bits is the number of bits
1328 of data and storagebits is the space (after padding) that it
1329 occupies in the buffer. shift if specified, is the shift that
1330 needs to be applied prior to masking out unused bits. Some
1331 devices put their data in the middle of the transferred elements
1332 with additional information on both sides. Note that some
1333 devices will have additional information in the unused bits
1334 so to get a clean value, the bits value must be used to mask
1335 the buffer output value appropriately. The storagebits value
1336 also specifies the data alignment. So s48/64>>2 will be a
1337 signed 48 bit integer stored in a 64 bit location aligned to
1338 a 64 bit boundary. To obtain the clean value, shift right 2
1339 and apply a mask to zero the top 16 bits of the result.
1340 For other storage combinations this attribute will be extended
1343 What: /sys/.../iio:deviceX/scan_elements/in_accel_type_available
1344 KernelVersion: 2.6.37
1345 Contact: linux-iio@vger.kernel.org
1347 If the type parameter can take one of a small set of values,
1348 this attribute lists them.
1350 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_index
1351 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index
1352 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_index
1353 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_index
1354 What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_index
1355 What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_index
1356 What: /sys/.../iio:deviceX/scan_elements/in_accel_x_index
1357 What: /sys/.../iio:deviceX/scan_elements/in_accel_y_index
1358 What: /sys/.../iio:deviceX/scan_elements/in_accel_z_index
1359 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index
1360 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index
1361 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index
1362 What: /sys/.../iio:deviceX/scan_elements/in_magn_x_index
1363 What: /sys/.../iio:deviceX/scan_elements/in_magn_y_index
1364 What: /sys/.../iio:deviceX/scan_elements/in_magn_z_index
1365 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index
1366 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index
1367 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index
1368 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index
1369 What: /sys/.../iio:deviceX/scan_elements/in_incli_x_index
1370 What: /sys/.../iio:deviceX/scan_elements/in_incli_y_index
1371 What: /sys/.../iio:deviceX/scan_elements/in_timestamp_index
1372 What: /sys/.../iio:deviceX/scan_elements/in_pressureY_index
1373 What: /sys/.../iio:deviceX/scan_elements/in_pressure_index
1374 What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index
1375 What: /sys/.../iio:deviceX/scan_elements/in_proximity_index
1376 KernelVersion: 2.6.37
1377 What: /sys/.../iio:deviceX/bufferY/in_voltageY_index
1378 What: /sys/.../iio:deviceX/bufferY/in_voltageY_supply_index
1379 What: /sys/.../iio:deviceX/bufferY/in_voltageY_i_index
1380 What: /sys/.../iio:deviceX/bufferY/in_voltageY_q_index
1381 What: /sys/.../iio:deviceX/bufferY/in_voltage_i_index
1382 What: /sys/.../iio:deviceX/bufferY/in_voltage_q_index
1383 What: /sys/.../iio:deviceX/bufferY/in_accel_x_index
1384 What: /sys/.../iio:deviceX/bufferY/in_accel_y_index
1385 What: /sys/.../iio:deviceX/bufferY/in_accel_z_index
1386 What: /sys/.../iio:deviceX/bufferY/in_anglvel_x_index
1387 What: /sys/.../iio:deviceX/bufferY/in_anglvel_y_index
1388 What: /sys/.../iio:deviceX/bufferY/in_anglvel_z_index
1389 What: /sys/.../iio:deviceX/bufferY/in_magn_x_index
1390 What: /sys/.../iio:deviceX/bufferY/in_magn_y_index
1391 What: /sys/.../iio:deviceX/bufferY/in_magn_z_index
1392 What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_index
1393 What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_index
1394 What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_magnetic_tilt_comp_index
1395 What: /sys/.../iio:deviceX/bufferY/in_rot_from_north_true_tilt_comp_index
1396 What: /sys/.../iio:deviceX/bufferY/in_incli_x_index
1397 What: /sys/.../iio:deviceX/bufferY/in_incli_y_index
1398 What: /sys/.../iio:deviceX/bufferY/in_timestamp_index
1399 What: /sys/.../iio:deviceX/bufferY/in_pressureY_index
1400 What: /sys/.../iio:deviceX/bufferY/in_pressure_index
1401 What: /sys/.../iio:deviceX/bufferY/in_rot_quaternion_index
1402 What: /sys/.../iio:deviceX/bufferY/in_proximity_index
1404 Contact: linux-iio@vger.kernel.org
1406 A single positive integer specifying the position of this
1407 scan element in the buffer. Note these are not dependent on
1408 what is enabled and may not be contiguous. Thus for user-space
1409 to establish the full layout these must be used in conjunction
1410 with all _en attributes to establish which channels are present,
1411 and the relevant _type attributes to establish the data storage
1414 What: /sys/.../iio:deviceX/in_activity_still_input
1415 What: /sys/.../iio:deviceX/in_activity_walking_input
1416 What: /sys/.../iio:deviceX/in_activity_jogging_input
1417 What: /sys/.../iio:deviceX/in_activity_running_input
1419 Contact: linux-iio@vger.kernel.org
1421 This attribute is used to read the confidence for an activity
1422 expressed in units as percentage.
1424 What: /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw
1425 KernelVersion: 2.6.38
1426 Contact: linux-iio@vger.kernel.org
1428 This attribute is used to read the amount of quadrature error
1429 present in the device at a given time.
1431 What: /sys/.../iio:deviceX/in_accelX_power_mode
1433 Contact: linux-iio@vger.kernel.org
1435 Specifies the chip power mode.
1436 low_noise: reduce noise level from ADC,
1437 low_power: enable low current consumption.
1438 For a list of available output power modes read
1439 in_accel_power_mode_available.
1441 What: /sys/.../iio:deviceX/in_energy_input
1442 What: /sys/.../iio:deviceX/in_energy_raw
1444 Contact: linux-iio@vger.kernel.org
1446 This attribute is used to read the energy value reported by the
1447 device (e.g.: human activity sensors report energy burnt by the
1448 user). Units after application of scale are Joules.
1450 What: /sys/.../iio:deviceX/in_distance_input
1451 What: /sys/.../iio:deviceX/in_distance_raw
1453 Contact: linux-iio@vger.kernel.org
1455 This attribute is used to read the measured distance to an object
1456 or the distance covered by the user since the last reboot while
1457 activated. Units after application of scale are meters.
1459 What: /sys/bus/iio/devices/iio:deviceX/store_eeprom
1460 KernelVersion: 3.4.0
1461 Contact: linux-iio@vger.kernel.org
1463 Writing '1' stores the current device configuration into
1464 on-chip EEPROM. After power-up or chip reset the device will
1465 automatically load the saved configuration.
1467 What: /sys/.../iio:deviceX/in_proximity_raw
1468 What: /sys/.../iio:deviceX/in_proximity_input
1469 What: /sys/.../iio:deviceX/in_proximityY_raw
1471 Contact: linux-iio@vger.kernel.org
1473 Proximity measurement indicating that some
1474 object is near the sensor, usually by observing
1475 reflectivity of infrared or ultrasound emitted.
1477 Often these sensors are unit less and as such conversion
1478 to SI units is not possible. Higher proximity measurements
1479 indicate closer objects, and vice versa. Units after
1480 application of scale and offset are meters.
1482 What: /sys/.../iio:deviceX/in_illuminance_input
1483 What: /sys/.../iio:deviceX/in_illuminance_raw
1484 What: /sys/.../iio:deviceX/in_illuminanceY_input
1485 What: /sys/.../iio:deviceX/in_illuminanceY_raw
1486 What: /sys/.../iio:deviceX/in_illuminanceY_mean_raw
1487 What: /sys/.../iio:deviceX/in_illuminance_ir_raw
1488 What: /sys/.../iio:deviceX/in_illuminance_clear_raw
1490 Contact: linux-iio@vger.kernel.org
1492 Illuminance measurement, units after application of scale
1495 What: /sys/.../iio:deviceX/in_intensityY_raw
1496 What: /sys/.../iio:deviceX/in_intensityY_ir_raw
1497 What: /sys/.../iio:deviceX/in_intensityY_both_raw
1498 What: /sys/.../iio:deviceX/in_intensityY_uv_raw
1499 What: /sys/.../iio:deviceX/in_intensityY_duv_raw
1501 Contact: linux-iio@vger.kernel.org
1503 Unit-less light intensity. Modifiers both and ir indicate
1504 that measurements contain visible and infrared light
1505 components or just infrared light, respectively. Modifier
1506 uv indicates that measurements contain ultraviolet light
1507 components. Modifier duv indicates that measurements
1508 contain deep ultraviolet light components.
1510 What: /sys/.../iio:deviceX/in_uvindex_input
1512 Contact: linux-iio@vger.kernel.org
1514 UV light intensity index measuring the human skin's response to
1515 different wavelength of sunlight weighted according to the
1516 standardised CIE Erythemal Action Spectrum. UV index values range
1517 from 0 (low) to >=11 (extreme).
1519 What: /sys/.../iio:deviceX/in_intensity_integration_time
1520 What: /sys/.../iio:deviceX/in_intensity_red_integration_time
1521 What: /sys/.../iio:deviceX/in_intensity_green_integration_time
1522 What: /sys/.../iio:deviceX/in_intensity_blue_integration_time
1523 What: /sys/.../iio:deviceX/in_intensity_clear_integration_time
1524 What: /sys/.../iio:deviceX/in_illuminance_integration_time
1526 Contact: linux-iio@vger.kernel.org
1528 This attribute is used to get/set the integration time in
1529 seconds. If shared across all channels of a given type,
1530 <type>_integration_time is used.
1532 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time
1534 Contact: linux-iio@vger.kernel.org
1536 Number of seconds in which to compute speed.
1538 What: /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw
1540 Contact: linux-iio@vger.kernel.org
1542 Raw value of quaternion components using a format
1543 x y z w. Here x, y, and z component represents the axis about
1544 which a rotation will occur and w component represents the
1547 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw
1548 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw
1549 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw
1550 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw
1552 Contact: linux-iio@vger.kernel.org
1554 Raw value of rotation from true/magnetic north measured with
1555 or without compensation from tilt sensors.
1557 What: /sys/bus/iio/devices/iio:deviceX/in_currentX_raw
1558 What: /sys/bus/iio/devices/iio:deviceX/in_currentX_i_raw
1559 What: /sys/bus/iio/devices/iio:deviceX/in_currentX_q_raw
1561 Contact: linux-iio@vger.kernel.org
1563 Raw current measurement from channel X. Units are in milliamps
1564 after application of scale and offset. If no offset or scale is
1565 present, output should be considered as processed with the
1568 Channels with 'i' and 'q' modifiers always exist in pairs and both
1569 channels refer to the same signal. The 'i' channel contains the in-phase
1570 component of the signal while the 'q' channel contains the quadrature
1573 What: /sys/.../iio:deviceX/in_energy_en
1574 What: /sys/.../iio:deviceX/in_distance_en
1575 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en
1576 What: /sys/.../iio:deviceX/in_steps_en
1578 Contact: linux-iio@vger.kernel.org
1580 Activates a device feature that runs in firmware/hardware.
1581 E.g. for steps: the pedometer saves power while not used;
1582 when activated, it will count the steps taken by the user in
1583 firmware and export them through in_steps_input.
1585 What: /sys/.../iio:deviceX/in_steps_input
1587 Contact: linux-iio@vger.kernel.org
1589 This attribute is used to read the number of steps taken by the user
1590 since the last reboot while activated.
1592 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input
1593 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw
1595 Contact: linux-iio@vger.kernel.org
1597 This attribute is used to read the current speed value of the
1598 user (which is the norm or magnitude of the velocity vector).
1599 Units after application of scale are m/s.
1601 What: /sys/.../iio:deviceX/in_steps_debounce_count
1603 Contact: linux-iio@vger.kernel.org
1605 Specifies the number of steps that must occur within
1606 in_steps_filter_debounce_time for the pedometer to decide the
1607 consumer is making steps.
1609 What: /sys/.../iio:deviceX/in_steps_debounce_time
1611 Contact: linux-iio@vger.kernel.org
1613 Specifies number of seconds in which we compute the steps
1614 that occur in order to decide if the consumer is making steps.
1616 What: /sys/bus/iio/devices/iio:deviceX/buffer/watermark
1618 What: /sys/bus/iio/devices/iio:deviceX/bufferY/watermark
1620 Contact: linux-iio@vger.kernel.org
1622 A single positive integer specifying the maximum number of scan
1623 elements to wait for.
1625 Poll will block until the watermark is reached.
1627 Blocking read will wait until the minimum between the requested
1628 read amount or the low water mark is available.
1630 Non-blocking read will retrieve the available samples from the
1631 buffer even if there are less samples then watermark level. This
1632 allows the application to block on poll with a timeout and read
1633 the available samples after the timeout expires and thus have a
1634 maximum delay guarantee.
1636 What: /sys/bus/iio/devices/iio:deviceX/buffer/data_available
1638 What: /sys/bus/iio/devices/iio:deviceX/bufferY/data_available
1640 Contact: linux-iio@vger.kernel.org
1642 A read-only value indicating the bytes of data available in the
1643 buffer. In the case of an output buffer, this indicates the
1644 amount of empty space available to write data to. In the case of
1645 an input buffer, this indicates the amount of data available for
1648 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled
1650 Contact: linux-iio@vger.kernel.org
1652 A read-only boolean value that indicates if the hardware fifo is
1653 currently enabled or disabled. If the device does not have a
1654 hardware fifo this entry is not present.
1655 The hardware fifo is enabled when the buffer is enabled if the
1656 current hardware fifo watermark level is set and other current
1657 device settings allows it (e.g. if a trigger is set that samples
1658 data differently that the hardware fifo does then hardware fifo
1661 If the hardware fifo is enabled and the level of the hardware
1662 fifo reaches the hardware fifo watermark level the device will
1663 flush its hardware fifo to the device buffer. Doing a non
1664 blocking read on the device when no samples are present in the
1665 device buffer will also force a flush.
1667 When the hardware fifo is enabled there is no need to use a
1668 trigger to use buffer mode since the watermark settings
1669 guarantees that the hardware fifo is flushed to the device
1672 What: /sys/bus/iio/devices/iio:device*/buffer/hwfifo_timeout
1674 Contact: linux-iio@vger.kernel.org
1676 A read/write property to provide capability to delay reporting of
1677 samples till a timeout is reached. This allows host processors to
1678 sleep, while the sensor is storing samples in its internal fifo.
1679 The maximum timeout in seconds can be specified by setting
1680 hwfifo_timeout.The current delay can be read by reading
1681 hwfifo_timeout. A value of 0 means that there is no timeout.
1683 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark
1685 Contact: linux-iio@vger.kernel.org
1687 Read-only entry that contains a single integer specifying the
1688 current watermark level for the hardware fifo. If the device
1689 does not have a hardware fifo this entry is not present.
1690 The watermark level for the hardware fifo is set by the driver
1691 based on the value set by the user in buffer/watermark but
1692 taking into account hardware limitations (e.g. most hardware
1693 buffers are limited to 32-64 samples, some hardware buffers
1694 watermarks are fixed or have minimum levels). A value of 0
1695 means that the hardware watermark is unset.
1697 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_min
1699 Contact: linux-iio@vger.kernel.org
1701 A single positive integer specifying the minimum watermark level
1702 for the hardware fifo of this device. If the device does not
1703 have a hardware fifo this entry is not present.
1705 If the user sets buffer/watermark to a value less than this one,
1706 then the hardware watermark will remain unset.
1708 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_max
1710 Contact: linux-iio@vger.kernel.org
1712 A single positive integer specifying the maximum watermark level
1713 for the hardware fifo of this device. If the device does not
1714 have a hardware fifo this entry is not present.
1716 If the user sets buffer/watermark to a value greater than this
1717 one, then the hardware watermark will be capped at this value.
1719 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_available
1721 Contact: linux-iio@vger.kernel.org
1723 A list of positive integers specifying the available watermark
1724 levels for the hardware fifo. This entry is optional and if it
1725 is not present it means that all the values between
1726 hwfifo_watermark_min and hwfifo_watermark_max are supported.
1728 If the user sets buffer/watermark to a value greater than
1729 hwfifo_watermak_min but not equal to any of the values in this
1730 list, the driver will chose an appropriate value for the
1731 hardware fifo watermark level.
1733 What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibemissivity
1734 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_calibemissivity
1735 What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibemissivity
1736 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibemissivity
1738 Contact: linux-iio@vger.kernel.org
1740 The emissivity ratio of the surface in the field of view of the
1741 contactless temperature sensor. Emissivity varies from 0 to 1,
1742 with 1 being the emissivity of a black body.
1744 What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_oversampling_ratio
1745 What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_oversampling_ratio
1746 What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_oversampling_ratio
1748 Contact: linux-iio@vger.kernel.org
1750 Hardware applied number of measurements for acquiring one
1751 data point. The HW will do <type>[_name]_oversampling_ratio
1752 measurements and return the average value as output data. Each
1753 value resulted from <type>[_name]_oversampling_ratio measurements
1754 is considered as one sample for <type>[_name]_sampling_frequency.
1756 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_raw
1757 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_raw
1758 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw
1759 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_co2_raw
1760 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_ethanol_raw
1761 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_ethanol_raw
1762 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_h2_raw
1763 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_h2_raw
1764 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_o2_raw
1765 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_o2_raw
1766 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw
1767 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw
1769 Contact: linux-iio@vger.kernel.org
1771 Raw (unscaled no offset etc.) reading of a substance. Units
1772 after application of scale and offset are percents.
1774 What: /sys/bus/iio/devices/iio:deviceX/in_resistance_raw
1775 What: /sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw
1776 What: /sys/bus/iio/devices/iio:deviceX/out_resistance_raw
1777 What: /sys/bus/iio/devices/iio:deviceX/out_resistanceX_raw
1779 Contact: linux-iio@vger.kernel.org
1781 Raw (unscaled no offset etc.) resistance reading that can be processed
1784 What: /sys/bus/iio/devices/iio:deviceX/heater_enable
1785 KernelVersion: 4.1.0
1786 Contact: linux-iio@vger.kernel.org
1788 '1' (enable) or '0' (disable) specifying the enable
1789 of heater function. Same reading values apply.
1791 This ABI is especially applicable for humidity sensors
1792 to heatup the device and get rid of any condensation
1793 in some humidity environment
1795 What: /sys/bus/iio/devices/iio:deviceX/in_ph_raw
1797 Contact: linux-iio@vger.kernel.org
1799 Raw (unscaled no offset etc.) pH reading of a substance as a negative
1800 base-10 logarithm of hydrodium ions in a litre of water.
1802 What: /sys/bus/iio/devices/iio:deviceX/mount_matrix
1803 What: /sys/bus/iio/devices/iio:deviceX/in_mount_matrix
1804 What: /sys/bus/iio/devices/iio:deviceX/out_mount_matrix
1805 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_mount_matrix
1806 What: /sys/bus/iio/devices/iio:deviceX/in_accel_mount_matrix
1808 Contact: linux-iio@vger.kernel.org
1810 Mounting matrix for IIO sensors. This is a rotation matrix which
1811 informs userspace about sensor chip's placement relative to the
1812 main hardware it is mounted on.
1814 Main hardware placement is defined according to the local
1815 reference frame related to the physical quantity the sensor
1818 Given that the rotation matrix is defined in a board specific
1819 way (platform data and / or device-tree), the main hardware
1820 reference frame definition is left to the implementor's choice
1821 (see below for a magnetometer example).
1823 Applications should apply this rotation matrix to samples so
1824 that when main hardware reference frame is aligned onto local
1825 reference frame, then sensor chip reference frame is also
1826 perfectly aligned with it.
1828 Matrix is a 3x3 unitary matrix and typically looks like
1829 [0, 1, 0; 1, 0, 0; 0, 0, -1]. Identity matrix
1830 [1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and main hardware
1831 are perfectly aligned with each other.
1833 For example, a mounting matrix for a magnetometer sensor informs
1834 userspace about sensor chip's ORIENTATION relative to the main
1837 More specifically, main hardware orientation is defined with
1838 respect to the LOCAL EARTH GEOMAGNETIC REFERENCE FRAME where :
1840 * Y is in the ground plane and positive towards magnetic North ;
1841 * X is in the ground plane, perpendicular to the North axis and
1842 positive towards the East ;
1843 * Z is perpendicular to the ground plane and positive upwards.
1845 An implementor might consider that for a hand-held device, a
1846 'natural' orientation would be 'front facing camera at the top'.
1847 The main hardware reference frame could then be described as :
1849 * Y is in the plane of the screen and is positive towards the
1851 * X is in the plane of the screen, perpendicular to Y axis, and
1852 positive towards the right hand side of the screen ;
1853 * Z is perpendicular to the screen plane and positive out of the
1856 Another example for a quadrotor UAV might be :
1858 * Y is in the plane of the propellers and positive towards the
1860 * X is in the plane of the propellers, perpendicular to Y axis,
1861 and positive towards the starboard side of the UAV ;
1862 * Z is perpendicular to propellers plane and positive upwards.
1864 What: /sys/bus/iio/devices/iio:deviceX/in_electricalconductivity_raw
1866 Contact: linux-iio@vger.kernel.org
1868 Raw (unscaled no offset etc.) electric conductivity reading that
1869 can be processed to siemens per meter.
1871 What: /sys/bus/iio/devices/iio:deviceX/in_countY_raw
1873 Contact: linux-iio@vger.kernel.org
1875 This interface is deprecated; please use the Counter subsystem.
1877 Raw counter device counts from channel Y. For quadrature
1878 counters, multiplication by an available [Y]_scale results in
1879 the counts of a single quadrature signal phase from channel Y.
1881 What: /sys/bus/iio/devices/iio:deviceX/in_indexY_raw
1883 Contact: linux-iio@vger.kernel.org
1885 This interface is deprecated; please use the Counter subsystem.
1887 Raw counter device index value from channel Y. This attribute
1888 provides an absolute positional reference (e.g. a pulse once per
1889 revolution) which may be used to home positional systems as
1892 What: /sys/bus/iio/devices/iio:deviceX/in_count_count_direction_available
1894 Contact: linux-iio@vger.kernel.org
1896 This interface is deprecated; please use the Counter subsystem.
1898 A list of possible counting directions which are:
1900 - "up" : counter device is increasing.
1901 - "down": counter device is decreasing.
1903 What: /sys/bus/iio/devices/iio:deviceX/in_countY_count_direction
1905 Contact: linux-iio@vger.kernel.org
1907 This interface is deprecated; please use the Counter subsystem.
1909 Raw counter device counters direction for channel Y.
1911 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_label
1912 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_label
1914 Contact: linux-iio@vger.kernel.org
1916 Optional symbolic label to a device channel.
1917 If a label is defined for this channel add that to the channel
1918 specific attributes. This is useful for userspace to be able to
1919 better identify an individual channel.
1921 What: /sys/bus/iio/devices/iio:deviceX/in_phaseY_raw
1923 Contact: linux-iio@vger.kernel.org
1925 Raw (unscaled) phase difference reading from channel Y
1926 that can be processed to radians.
1928 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm1_input
1929 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm1_input
1930 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm2p5_input
1931 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm2p5_input
1932 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm4_input
1933 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm4_input
1934 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentration_pm10_input
1935 What: /sys/bus/iio/devices/iio:deviceX/in_massconcentrationY_pm10_input
1937 Contact: linux-iio@vger.kernel.org
1939 Mass concentration reading of particulate matter in ug / m3.
1940 pmX consists of particles with aerodynamic diameter less or
1941 equal to X micrometers.
1943 What: /sys/bus/iio/devices/iio:deviceX/events/in_illuminance_period_available
1946 Contact: linux-iio@vger.kernel.org
1948 List of valid periods (in seconds) for which the light intensity
1949 must be above the threshold level before interrupt is asserted.
1951 What: /sys/bus/iio/devices/iio:deviceX/in_filter_notch_center_frequency
1953 Contact: linux-iio@vger.kernel.org
1955 Center frequency in Hz for a notch filter. Used i.e. for line
1958 What: /sys/bus/iio/devices/iio:deviceX/in_temp_thermocouple_type
1960 Contact: linux-iio@vger.kernel.org
1962 One of the following thermocouple types: B, E, J, K, N, R, S, T.
1964 What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibambient
1965 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibambient
1967 Contact: linux-iio@vger.kernel.org
1969 Calibrated ambient temperature for object temperature
1970 calculation in milli degrees Celsius.
1972 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_x_raw
1973 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_y_raw
1974 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_z_raw
1976 Contact: linux-iio@vger.kernel.org
1978 Unscaled light intensity according to CIE 1931/DIN 5033 color space.
1979 Units after application of scale are nano nanowatts per square meter.
1981 What: /sys/bus/iio/devices/iio:deviceX/in_anglY_label
1983 Contact: linux-iio@vger.kernel.org
1985 Optional symbolic label for channel Y.
1986 For Intel hid hinge sensor, the label values are:
1987 hinge, keyboard, screen. It means the three channels
1988 each correspond respectively to hinge angle, keyboard angle,
1991 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_hysteresis_relative
1992 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_hysteresis_relative
1994 Contact: linux-iio@vger.kernel.org
1996 Specify the percent for light sensor relative to the channel
1997 absolute value that a data field should change before an event
1998 is generated. Units are a percentage of the prior reading.
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