1 What: /sys/bus/iio/devices/iio:deviceX
3 Contact: linux-iio@vger.kernel.org
5 Hardware chip or device accessed by one communication port.
6 Corresponds to a grouping of sensor channels. X is the IIO
9 What: /sys/bus/iio/devices/triggerX
11 Contact: linux-iio@vger.kernel.org
13 An event driven driver of data capture to an in kernel buffer.
14 May be provided by a device driver that also has an IIO device
15 based on hardware generated events (e.g. data ready) or
16 provided by a separate driver for other hardware (e.g.
17 periodic timer, GPIO or high resolution timer).
18 Contains trigger type specific elements. These do not
19 generalize well and hence are not documented in this file.
20 X is the IIO index of the trigger.
22 What: /sys/bus/iio/devices/iio:deviceX/buffer
24 Contact: linux-iio@vger.kernel.org
26 Directory of attributes relating to the buffer for the device.
28 What: /sys/bus/iio/devices/iio:deviceX/name
30 Contact: linux-iio@vger.kernel.org
32 Description of the physical chip / device for device X.
33 Typically a part number.
35 What: /sys/bus/iio/devices/iio:deviceX/timestamp_clock
37 Contact: linux-iio@vger.kernel.org
39 String identifying current posix clock used to timestamp
40 buffered samples and events for device X.
42 What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency
43 What: /sys/bus/iio/devices/iio:deviceX/buffer/sampling_frequency
44 What: /sys/bus/iio/devices/triggerX/sampling_frequency
46 Contact: linux-iio@vger.kernel.org
48 Some devices have internal clocks. This parameter sets the
49 resulting sampling frequency. In many devices this
50 parameter has an effect on input filters etc. rather than
51 simply controlling when the input is sampled. As this
52 effects data ready triggers, hardware buffers and the sysfs
53 direct access interfaces, it may be found in any of the
54 relevant directories. If it effects all of the above
55 then it is to be found in the base device directory.
57 What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
58 What: /sys/bus/iio/devices/iio:deviceX/in_proximity_sampling_frequency_available
59 What: /sys/.../iio:deviceX/buffer/sampling_frequency_available
60 What: /sys/bus/iio/devices/triggerX/sampling_frequency_available
62 Contact: linux-iio@vger.kernel.org
64 When the internal sampling clock can only take a small
65 discrete set of values, this file lists those available.
67 What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio
69 Contact: linux-iio@vger.kernel.org
71 Hardware dependent ADC oversampling. Controls the sampling ratio
72 of the digital filter if available.
74 What: /sys/bus/iio/devices/iio:deviceX/oversampling_ratio_available
76 Contact: linux-iio@vger.kernel.org
78 Hardware dependent values supported by the oversampling filter.
80 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_raw
81 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_raw
82 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_raw
83 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_raw
85 Contact: linux-iio@vger.kernel.org
87 Raw (unscaled no bias removal etc.) voltage measurement from
88 channel Y. In special cases where the channel does not
89 correspond to externally available input one of the named
90 versions may be used. The number must always be specified and
91 unique to allow association with event codes. Units after
92 application of scale and offset are millivolts.
94 Channels with 'i' and 'q' modifiers always exist in pairs and both
95 channels refer to the same signal. The 'i' channel contains the in-phase
96 component of the signal while the 'q' channel contains the quadrature
99 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_raw
100 KernelVersion: 2.6.35
101 Contact: linux-iio@vger.kernel.org
103 Raw (unscaled) differential voltage measurement equivalent to
104 channel Y - channel Z where these channel numbers apply to the
105 physically equivalent inputs when non differential readings are
106 separately available. In differential only parts, then all that
107 is required is a consistent labeling. Units after application
108 of scale and offset are millivolts.
110 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_raw
111 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_raw
113 Contact: linux-iio@vger.kernel.org
115 Raw (unscaled no bias removal etc.) current measurement from
116 channel Y. In special cases where the channel does not
117 correspond to externally available input one of the named
118 versions may be used. The number must always be specified and
119 unique to allow association with event codes. Units after
120 application of scale and offset are milliamps.
122 What: /sys/bus/iio/devices/iio:deviceX/in_powerY_raw
124 Contact: linux-iio@vger.kernel.org
126 Raw (unscaled no bias removal etc.) power measurement from
127 channel Y. The number must always be specified and
128 unique to allow association with event codes. Units after
129 application of scale and offset are milliwatts.
131 What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_raw
133 Contact: linux-iio@vger.kernel.org
135 Raw capacitance measurement from channel Y. Units after
136 application of scale and offset are nanofarads.
138 What: /sys/.../iio:deviceX/in_capacitanceY-in_capacitanceZ_raw
140 Contact: linux-iio@vger.kernel.org
142 Raw differential capacitance measurement equivalent to
143 channel Y - channel Z where these channel numbers apply to the
144 physically equivalent inputs when non differential readings are
145 separately available. In differential only parts, then all that
146 is required is a consistent labeling. Units after application
147 of scale and offset are nanofarads.
149 What: /sys/bus/iio/devices/iio:deviceX/in_temp_raw
150 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_raw
151 What: /sys/bus/iio/devices/iio:deviceX/in_temp_x_raw
152 What: /sys/bus/iio/devices/iio:deviceX/in_temp_y_raw
153 What: /sys/bus/iio/devices/iio:deviceX/in_temp_ambient_raw
154 What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_raw
155 KernelVersion: 2.6.35
156 Contact: linux-iio@vger.kernel.org
158 Raw (unscaled no bias removal etc.) temperature measurement.
159 If an axis is specified it generally means that the temperature
160 sensor is associated with one part of a compound device (e.g.
161 a gyroscope axis). The ambient and object modifiers distinguish
162 between ambient (reference) and distant temperature for contact-
163 less measurements. Units after application of scale and offset
164 are milli degrees Celsius.
166 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_input
167 KernelVersion: 2.6.38
168 Contact: linux-iio@vger.kernel.org
170 Scaled temperature measurement in milli degrees Celsius.
172 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_raw
173 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_raw
174 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_raw
175 KernelVersion: 2.6.35
176 Contact: linux-iio@vger.kernel.org
178 Acceleration in direction x, y or z (may be arbitrarily assigned
179 but should match other such assignments on device).
180 Has all of the equivalent parameters as per voltageY. Units
181 after application of scale and offset are m/s^2.
183 What: /sys/bus/iio/devices/iio:deviceX/in_gravity_x_raw
184 What: /sys/bus/iio/devices/iio:deviceX/in_gravity_y_raw
185 What: /sys/bus/iio/devices/iio:deviceX/in_gravity_z_raw
187 Contact: linux-iio@vger.kernel.org
189 Gravity in direction x, y or z (may be arbitrarily assigned
190 but should match other such assignments on device).
191 Units after application of scale and offset are m/s^2.
193 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_raw
194 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_raw
195 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_raw
196 KernelVersion: 2.6.35
197 Contact: linux-iio@vger.kernel.org
199 Angular velocity about axis x, y or z (may be arbitrarily
200 assigned). Has all the equivalent parameters as per voltageY.
201 Units after application of scale and offset are radians per
204 What: /sys/bus/iio/devices/iio:deviceX/in_incli_x_raw
205 What: /sys/bus/iio/devices/iio:deviceX/in_incli_y_raw
206 What: /sys/bus/iio/devices/iio:deviceX/in_incli_z_raw
207 KernelVersion: 2.6.35
208 Contact: linux-iio@vger.kernel.org
210 Inclination raw reading about axis x, y or z (may be
211 arbitrarily assigned). Data converted by application of offset
212 and scale to degrees.
214 What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_raw
215 What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_raw
216 What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_raw
217 KernelVersion: 2.6.35
218 Contact: linux-iio@vger.kernel.org
220 Magnetic field along axis x, y or z (may be arbitrarily
221 assigned). Data converted by application of offset
224 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_peak_raw
225 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_peak_raw
226 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_peak_raw
227 KernelVersion: 2.6.36
228 Contact: linux-iio@vger.kernel.org
230 Highest value since some reset condition. These
231 attributes allow access to this and are otherwise
232 the direct equivalent of the <type>Y[_name]_raw attributes.
234 What: /sys/bus/iio/devices/iio:deviceX/in_accel_xyz_squared_peak_raw
235 KernelVersion: 2.6.36
236 Contact: linux-iio@vger.kernel.org
238 A computed peak value based on the sum squared magnitude of
239 the underlying value in the specified directions.
241 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_raw
242 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_raw
244 Contact: linux-iio@vger.kernel.org
246 Raw pressure measurement from channel Y. Units after
247 application of scale and offset are kilopascal.
249 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_input
250 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_input
252 Contact: linux-iio@vger.kernel.org
254 Scaled pressure measurement from channel Y, in kilopascal.
256 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_raw
258 Contact: linux-iio@vger.kernel.org
260 Raw humidity measurement of air. Units after application of
261 scale and offset are milli percent.
263 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_input
265 Contact: linux-iio@vger.kernel.org
267 Scaled humidity measurement in milli percent.
269 What: /sys/bus/iio/devices/iio:deviceX/in_X_mean_raw
271 Contact: linux-iio@vger.kernel.org
273 Averaged raw measurement from channel X. The number of values
274 used for averaging is device specific. The converting rules for
275 normal raw values also applies to the averaged raw values.
277 What: /sys/bus/iio/devices/iio:deviceX/in_accel_offset
278 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_offset
279 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_offset
280 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_offset
281 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_offset
282 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_offset
283 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_offset
284 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_offset
285 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_offset
286 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_offset
287 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_offset
288 What: /sys/bus/iio/devices/iio:deviceX/in_current_offset
289 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_offset
290 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_offset
291 What: /sys/bus/iio/devices/iio:deviceX/in_current_q_offset
292 What: /sys/bus/iio/devices/iio:deviceX/in_current_i_offset
293 What: /sys/bus/iio/devices/iio:deviceX/in_tempY_offset
294 What: /sys/bus/iio/devices/iio:deviceX/in_temp_offset
295 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_offset
296 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_offset
297 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_offset
298 What: /sys/bus/iio/devices/iio:deviceX/in_magn_offset
299 What: /sys/bus/iio/devices/iio:deviceX/in_rot_offset
300 KernelVersion: 2.6.35
301 Contact: linux-iio@vger.kernel.org
303 If known for a device, offset to be added to <type>[Y]_raw prior
304 to scaling by <type>[Y]_scale in order to obtain value in the
305 <type> units as specified in <type>[Y]_raw documentation.
306 Not present if the offset is always 0 or unknown. If Y or
307 axis <x|y|z> is not present, then the offset applies to all
308 in channels of <type>.
309 May be writable if a variable offset can be applied on the
310 device. Note that this is different to calibbias which
311 is for devices (or drivers) that apply offsets to compensate
312 for variation between different instances of the part, typically
313 adjusted by using some hardware supported calibration procedure.
314 Calibbias is applied internally, offset is applied in userspace
317 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
318 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_scale
319 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_scale
320 What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
321 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
322 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_i_scale
323 What: /sys/bus/iio/devices/iio:deviceX/in_voltage_q_scale
324 What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_scale
325 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_scale
326 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale
327 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_scale
328 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_supply_scale
329 What: /sys/bus/iio/devices/iio:deviceX/in_current_scale
330 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_i_scale
331 What: /sys/bus/iio/devices/iio:deviceX/in_currentY_q_scale
332 What: /sys/bus/iio/devices/iio:deviceX/in_current_i_scale
333 What: /sys/bus/iio/devices/iio:deviceX/in_current_q_scale
334 What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale
335 What: /sys/bus/iio/devices/iio:deviceX/in_accel_peak_scale
336 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_scale
337 What: /sys/bus/iio/devices/iio:deviceX/in_energy_scale
338 What: /sys/bus/iio/devices/iio:deviceX/in_distance_scale
339 What: /sys/bus/iio/devices/iio:deviceX/in_magn_scale
340 What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_scale
341 What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_scale
342 What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_scale
343 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_scale
344 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_scale
345 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_scale
346 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_scale
347 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_scale
348 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_scale
349 What: /sys/bus/iio/devices/iio:deviceX/in_humidityrelative_scale
350 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_scale
351 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_scale
352 What: /sys/bus/iio/devices/iio:deviceX/in_countY_scale
353 KernelVersion: 2.6.35
354 Contact: linux-iio@vger.kernel.org
356 If known for a device, scale to be applied to <type>Y[_name]_raw
357 post addition of <type>[Y][_name]_offset in order to obtain the
358 measured value in <type> units as specified in
359 <type>[Y][_name]_raw documentation. If shared across all in
360 channels then Y and <x|y|z> are not present and the value is
361 called <type>[Y][_name]_scale. The peak modifier means this
362 value is applied to <type>Y[_name]_peak_raw values.
364 What: /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibbias
365 What: /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibbias
366 What: /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibbias
367 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibbias
368 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibbias
369 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibbias
370 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibbias
371 What: /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibbias
372 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibbias
373 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibbias
374 KernelVersion: 2.6.35
375 Contact: linux-iio@vger.kernel.org
377 Hardware applied calibration offset (assumed to fix production
380 What /sys/bus/iio/devices/iio:deviceX/in_voltageY_calibscale
381 What /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_calibscale
382 What /sys/bus/iio/devices/iio:deviceX/in_voltageY_i_calibscale
383 What /sys/bus/iio/devices/iio:deviceX/in_voltageY_q_calibscale
384 What /sys/bus/iio/devices/iio:deviceX/in_voltage_i_calibscale
385 What /sys/bus/iio/devices/iio:deviceX/in_voltage_q_calibscale
386 What /sys/bus/iio/devices/iio:deviceX/in_voltage_calibscale
387 What /sys/bus/iio/devices/iio:deviceX/in_accel_x_calibscale
388 What /sys/bus/iio/devices/iio:deviceX/in_accel_y_calibscale
389 What /sys/bus/iio/devices/iio:deviceX/in_accel_z_calibscale
390 What /sys/bus/iio/devices/iio:deviceX/in_anglvel_x_calibscale
391 What /sys/bus/iio/devices/iio:deviceX/in_anglvel_y_calibscale
392 What /sys/bus/iio/devices/iio:deviceX/in_anglvel_z_calibscale
393 what /sys/bus/iio/devices/iio:deviceX/in_illuminance0_calibscale
394 what /sys/bus/iio/devices/iio:deviceX/in_proximity0_calibscale
395 What: /sys/bus/iio/devices/iio:deviceX/in_pressureY_calibscale
396 What: /sys/bus/iio/devices/iio:deviceX/in_pressure_calibscale
397 What: /sys/bus/iio/devices/iio:deviceX/in_illuminance_calibscale
398 KernelVersion: 2.6.35
399 Contact: linux-iio@vger.kernel.org
401 Hardware applied calibration scale factor (assumed to fix
402 production inaccuracies). If shared across all channels,
403 <type>_calibscale is used.
405 What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender
406 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender
407 What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender
408 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender
410 Contact: linux-iio@vger.kernel.org
412 Gender of the user (e.g.: male, female) used by some pedometers
413 to compute the stride length, distance, speed and activity
416 What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibgender_available
417 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibgender_available
418 What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibgender_available
419 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibgender_available
421 Contact: linux-iio@vger.kernel.org
423 Lists all available gender values (e.g.: male, female).
425 What: /sys/bus/iio/devices/iio:deviceX/in_activity_calibheight
426 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibheight
427 What: /sys/bus/iio/devices/iio:deviceX/in_distance_calibheight
428 What: /sys/bus/iio/devices/iio:deviceX/in_velocity_calibheight
430 Contact: linux-iio@vger.kernel.org
432 Height of the user (in meters) used by some pedometers
433 to compute the stride length, distance, speed and activity
436 What: /sys/bus/iio/devices/iio:deviceX/in_energy_calibweight
438 Contact: linux-iio@vger.kernel.org
440 Weight of the user (in kg). It is needed by some pedometers
441 to compute the calories burnt by the user.
443 What: /sys/bus/iio/devices/iio:deviceX/in_accel_scale_available
444 What: /sys/.../iio:deviceX/in_anglvel_scale_available
445 What: /sys/.../iio:deviceX/in_magn_scale_available
446 What: /sys/.../iio:deviceX/in_illuminance_scale_available
447 What: /sys/.../iio:deviceX/in_intensity_scale_available
448 What: /sys/.../iio:deviceX/in_proximity_scale_available
449 What: /sys/.../iio:deviceX/in_voltageX_scale_available
450 What: /sys/.../iio:deviceX/in_voltage-voltage_scale_available
451 What: /sys/.../iio:deviceX/out_voltageX_scale_available
452 What: /sys/.../iio:deviceX/out_altvoltageX_scale_available
453 What: /sys/.../iio:deviceX/in_capacitance_scale_available
454 What: /sys/.../iio:deviceX/in_pressure_scale_available
455 What: /sys/.../iio:deviceX/in_pressureY_scale_available
456 KernelVersion: 2.6.35
457 Contact: linux-iio@vger.kernel.org
459 If a discrete set of scale values is available, they
460 are listed in this attribute.
462 What /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
463 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_red_hardwaregain
464 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_green_hardwaregain
465 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_blue_hardwaregain
466 What: /sys/bus/iio/devices/iio:deviceX/in_intensity_clear_hardwaregain
467 KernelVersion: 2.6.35
468 Contact: linux-iio@vger.kernel.org
470 Hardware applied gain factor. If shared across all channels,
471 <type>_hardwaregain is used.
473 What: /sys/.../in_accel_filter_low_pass_3db_frequency
474 What: /sys/.../in_magn_filter_low_pass_3db_frequency
475 What: /sys/.../in_anglvel_filter_low_pass_3db_frequency
477 Contact: linux-iio@vger.kernel.org
479 If a known or controllable low pass filter is applied
480 to the underlying data channel, then this parameter
481 gives the 3dB frequency of the filter in Hz.
483 What: /sys/.../in_accel_filter_high_pass_3db_frequency
484 What: /sys/.../in_anglvel_filter_high_pass_3db_frequency
485 What: /sys/.../in_magn_filter_high_pass_3db_frequency
487 Contact: linux-iio@vger.kernel.org
489 If a known or controllable high pass filter is applied
490 to the underlying data channel, then this parameter
491 gives the 3dB frequency of the filter in Hz.
493 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw
494 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw
495 KernelVersion: 2.6.37
496 Contact: linux-iio@vger.kernel.org
498 Raw (unscaled, no bias etc.) output voltage for
499 channel Y. The number must always be specified and
500 unique if the output corresponds to a single channel.
501 While DAC like devices typically use out_voltage,
502 a continuous frequency generating device, such as
503 a DDS or PLL should use out_altvoltage.
505 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY&Z_raw
506 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY&Z_raw
507 KernelVersion: 2.6.37
508 Contact: linux-iio@vger.kernel.org
510 Raw (unscaled, no bias etc.) output voltage for an aggregate of
511 channel Y, channel Z, etc. This interface is available in cases
512 where a single output sets the value for multiple channels
515 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown_mode
516 What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown_mode
517 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown_mode
518 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown_mode
519 KernelVersion: 2.6.38
520 Contact: linux-iio@vger.kernel.org
522 Specifies the output powerdown mode.
523 DAC output stage is disconnected from the amplifier and
524 1kohm_to_gnd: connected to ground via an 1kOhm resistor,
525 2.5kohm_to_gnd: connected to ground via a 2.5kOhm resistor,
526 6kohm_to_gnd: connected to ground via a 6kOhm resistor,
527 20kohm_to_gnd: connected to ground via a 20kOhm resistor,
528 90kohm_to_gnd: connected to ground via a 90kOhm resistor,
529 100kohm_to_gnd: connected to ground via an 100kOhm resistor,
530 125kohm_to_gnd: connected to ground via an 125kOhm resistor,
531 500kohm_to_gnd: connected to ground via a 500kOhm resistor,
532 640kohm_to_gnd: connected to ground via a 640kOhm resistor,
533 three_state: left floating.
534 For a list of available output power down options read
535 outX_powerdown_mode_available. If Y is not present the
536 mode is shared across all outputs.
538 What: /sys/.../iio:deviceX/out_voltageY_powerdown_mode_available
539 What: /sys/.../iio:deviceX/out_voltage_powerdown_mode_available
540 What: /sys/.../iio:deviceX/out_altvoltageY_powerdown_mode_available
541 What: /sys/.../iio:deviceX/out_altvoltage_powerdown_mode_available
542 KernelVersion: 2.6.38
543 Contact: linux-iio@vger.kernel.org
545 Lists all available output power down modes.
546 If Y is not present the mode is shared across all outputs.
548 What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_powerdown
549 What: /sys/bus/iio/devices/iio:deviceX/out_voltage_powerdown
550 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_powerdown
551 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltage_powerdown
552 KernelVersion: 2.6.38
553 Contact: linux-iio@vger.kernel.org
555 Writing 1 causes output Y to enter the power down mode specified
556 by the corresponding outY_powerdown_mode. DAC output stage is
557 disconnected from the amplifier. Clearing returns to normal
558 operation. Y may be suppressed if all outputs are controlled
561 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency
563 Contact: linux-iio@vger.kernel.org
565 Output frequency for channel Y in Hz. The number must always be
566 specified and unique if the output corresponds to a single
569 What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_phase
571 Contact: linux-iio@vger.kernel.org
573 Phase in radians of one frequency/clock output Y
574 (out_altvoltageY) relative to another frequency/clock output
575 (out_altvoltageZ) of the device X. The number must always be
576 specified and unique if the output corresponds to a single
579 What: /sys/bus/iio/devices/iio:deviceX/events
580 KernelVersion: 2.6.35
581 Contact: linux-iio@vger.kernel.org
583 Configuration of which hardware generated events are passed up
586 What: /sys/.../iio:deviceX/events/in_accel_x_thresh_rising_en
587 What: /sys/.../iio:deviceX/events/in_accel_x_thresh_falling_en
588 What: /sys/.../iio:deviceX/events/in_accel_y_thresh_rising_en
589 What: /sys/.../iio:deviceX/events/in_accel_y_thresh_falling_en
590 What: /sys/.../iio:deviceX/events/in_accel_z_thresh_rising_en
591 What: /sys/.../iio:deviceX/events/in_accel_z_thresh_falling_en
592 What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_rising_en
593 What: /sys/.../iio:deviceX/events/in_anglvel_x_thresh_falling_en
594 What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_rising_en
595 What: /sys/.../iio:deviceX/events/in_anglvel_y_thresh_falling_en
596 What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_rising_en
597 What: /sys/.../iio:deviceX/events/in_anglvel_z_thresh_falling_en
598 What: /sys/.../iio:deviceX/events/in_magn_x_thresh_rising_en
599 What: /sys/.../iio:deviceX/events/in_magn_x_thresh_falling_en
600 What: /sys/.../iio:deviceX/events/in_magn_y_thresh_rising_en
601 What: /sys/.../iio:deviceX/events/in_magn_y_thresh_falling_en
602 What: /sys/.../iio:deviceX/events/in_magn_z_thresh_rising_en
603 What: /sys/.../iio:deviceX/events/in_magn_z_thresh_falling_en
604 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_rising_en
605 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_thresh_falling_en
606 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_rising_en
607 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_thresh_falling_en
608 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_en
609 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_en
610 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_rising_en
611 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_thresh_falling_en
612 What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_rising_en
613 What: /sys/.../iio:deviceX/events/in_voltageY_supply_thresh_falling_en
614 What: /sys/.../iio:deviceX/events/in_voltageY_thresh_rising_en
615 What: /sys/.../iio:deviceX/events/in_voltageY_thresh_falling_en
616 What: /sys/.../iio:deviceX/events/in_voltageY_thresh_either_en
617 What: /sys/.../iio:deviceX/events/in_tempY_thresh_rising_en
618 What: /sys/.../iio:deviceX/events/in_tempY_thresh_falling_en
619 KernelVersion: 2.6.37
620 Contact: linux-iio@vger.kernel.org
622 Event generated when channel passes a threshold in the specified
623 (_rising|_falling) direction. If the direction is not specified,
624 then either the device will report an event which ever direction
625 a single threshold value is passed in (e.g.
626 <type>[Y][_name]_<raw|input>_thresh_value) or
627 <type>[Y][_name]_<raw|input>_thresh_rising_value and
628 <type>[Y][_name]_<raw|input>_thresh_falling_value may take
629 different values, but the device can only enable both thresholds
631 Note the driver will assume the last p events requested are
632 to be enabled where p is how many it supports (which may vary
633 depending on the exact set requested. So if you want to be
634 sure you have set what you think you have, check the contents of
635 these attributes after everything is configured. Drivers may
636 have to buffer any parameters so that they are consistent when
637 a given event type is enabled at a future point (and not those for
638 whatever event was previously enabled).
640 What: /sys/.../iio:deviceX/events/in_accel_x_roc_rising_en
641 What: /sys/.../iio:deviceX/events/in_accel_x_roc_falling_en
642 What: /sys/.../iio:deviceX/events/in_accel_y_roc_rising_en
643 What: /sys/.../iio:deviceX/events/in_accel_y_roc_falling_en
644 What: /sys/.../iio:deviceX/events/in_accel_z_roc_rising_en
645 What: /sys/.../iio:deviceX/events/in_accel_z_roc_falling_en
646 What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_rising_en
647 What: /sys/.../iio:deviceX/events/in_anglvel_x_roc_falling_en
648 What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_rising_en
649 What: /sys/.../iio:deviceX/events/in_anglvel_y_roc_falling_en
650 What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_rising_en
651 What: /sys/.../iio:deviceX/events/in_anglvel_z_roc_falling_en
652 What: /sys/.../iio:deviceX/events/in_magn_x_roc_rising_en
653 What: /sys/.../iio:deviceX/events/in_magn_x_roc_falling_en
654 What: /sys/.../iio:deviceX/events/in_magn_y_roc_rising_en
655 What: /sys/.../iio:deviceX/events/in_magn_y_roc_falling_en
656 What: /sys/.../iio:deviceX/events/in_magn_z_roc_rising_en
657 What: /sys/.../iio:deviceX/events/in_magn_z_roc_falling_en
658 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_rising_en
659 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_roc_falling_en
660 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_rising_en
661 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_roc_falling_en
662 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_rising_en
663 What: /sys/.../iio:deviceX/events/in_rot_from_north_magnetic_tilt_comp_roc_falling_en
664 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_rising_en
665 What: /sys/.../iio:deviceX/events/in_rot_from_north_true_tilt_comp_roc_falling_en
666 What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_rising_en
667 What: /sys/.../iio:deviceX/events/in_voltageY_supply_roc_falling_en
668 What: /sys/.../iio:deviceX/events/in_voltageY_roc_rising_en
669 What: /sys/.../iio:deviceX/events/in_voltageY_roc_falling_en
670 What: /sys/.../iio:deviceX/events/in_tempY_roc_rising_en
671 What: /sys/.../iio:deviceX/events/in_tempY_roc_falling_en
672 KernelVersion: 2.6.37
673 Contact: linux-iio@vger.kernel.org
675 Event generated when channel passes a threshold on the rate of
676 change (1st differential) in the specified (_rising|_falling)
677 direction. If the direction is not specified, then either the
678 device will report an event which ever direction a single
679 threshold value is passed in (e.g.
680 <type>[Y][_name]_<raw|input>_roc_value) or
681 <type>[Y][_name]_<raw|input>_roc_rising_value and
682 <type>[Y][_name]_<raw|input>_roc_falling_value may take
683 different values, but the device can only enable both rate of
684 change thresholds or neither.
685 Note the driver will assume the last p events requested are
686 to be enabled where p is however many it supports (which may
687 vary depending on the exact set requested. So if you want to be
688 sure you have set what you think you have, check the contents of
689 these attributes after everything is configured. Drivers may
690 have to buffer any parameters so that they are consistent when
691 a given event type is enabled a future point (and not those for
692 whatever event was previously enabled).
694 What: /sys/.../events/in_accel_thresh_rising_value
695 What: /sys/.../events/in_accel_thresh_falling_value
696 What: /sys/.../events/in_accel_x_raw_thresh_rising_value
697 What: /sys/.../events/in_accel_x_raw_thresh_falling_value
698 What: /sys/.../events/in_accel_y_raw_thresh_rising_value
699 What: /sys/.../events/in_accel_y_raw_thresh_falling_value
700 What: /sys/.../events/in_accel_z_raw_thresh_rising_value
701 What: /sys/.../events/in_accel_z_raw_thresh_falling_value
702 What: /sys/.../events/in_anglvel_x_raw_thresh_rising_value
703 What: /sys/.../events/in_anglvel_x_raw_thresh_falling_value
704 What: /sys/.../events/in_anglvel_y_raw_thresh_rising_value
705 What: /sys/.../events/in_anglvel_y_raw_thresh_falling_value
706 What: /sys/.../events/in_anglvel_z_raw_thresh_rising_value
707 What: /sys/.../events/in_anglvel_z_raw_thresh_falling_value
708 What: /sys/.../events/in_magn_x_raw_thresh_rising_value
709 What: /sys/.../events/in_magn_x_raw_thresh_falling_value
710 What: /sys/.../events/in_magn_y_raw_thresh_rising_value
711 What: /sys/.../events/in_magn_y_raw_thresh_falling_value
712 What: /sys/.../events/in_magn_z_raw_thresh_rising_value
713 What: /sys/.../events/in_magn_z_raw_thresh_falling_value
714 What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_rising_value
715 What: /sys/.../events/in_rot_from_north_magnetic_raw_thresh_falling_value
716 What: /sys/.../events/in_rot_from_north_true_raw_thresh_rising_value
717 What: /sys/.../events/in_rot_from_north_true_raw_thresh_falling_value
718 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_rising_value
719 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_thresh_falling_value
720 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_rising_value
721 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_thresh_falling_value
722 What: /sys/.../events/in_voltageY_supply_raw_thresh_rising_value
723 What: /sys/.../events/in_voltageY_supply_raw_thresh_falling_value
724 What: /sys/.../events/in_voltageY_raw_thresh_rising_value
725 What: /sys/.../events/in_voltageY_raw_thresh_falling_value
726 What: /sys/.../events/in_tempY_raw_thresh_rising_value
727 What: /sys/.../events/in_tempY_raw_thresh_falling_value
728 What: /sys/.../events/in_illuminance0_thresh_falling_value
729 what: /sys/.../events/in_illuminance0_thresh_rising_value
730 what: /sys/.../events/in_proximity0_thresh_falling_value
731 what: /sys/.../events/in_proximity0_thresh_rising_value
732 KernelVersion: 2.6.37
733 Contact: linux-iio@vger.kernel.org
735 Specifies the value of threshold that the device is comparing
736 against for the events enabled by
737 <type>Y[_name]_thresh[_rising|falling]_en.
738 If separate attributes exist for the two directions, but
739 direction is not specified for this attribute, then a single
740 threshold value applies to both directions.
741 The raw or input element of the name indicates whether the
742 value is in raw device units or in processed units (as _raw
743 and _input do on sysfs direct channel read attributes).
745 What: /sys/.../events/in_accel_scale
746 What: /sys/.../events/in_accel_peak_scale
747 What: /sys/.../events/in_anglvel_scale
748 What: /sys/.../events/in_magn_scale
749 What: /sys/.../events/in_rot_from_north_magnetic_scale
750 What: /sys/.../events/in_rot_from_north_true_scale
751 What: /sys/.../events/in_voltage_scale
752 What: /sys/.../events/in_voltage_supply_scale
753 What: /sys/.../events/in_temp_scale
754 What: /sys/.../events/in_illuminance_scale
755 What: /sys/.../events/in_proximity_scale
757 Contact: linux-iio@vger.kernel.org
759 Specifies the conversion factor from the standard units
760 to device specific units used to set the event trigger
763 What: /sys/.../events/in_accel_x_thresh_rising_hysteresis
764 What: /sys/.../events/in_accel_x_thresh_falling_hysteresis
765 What: /sys/.../events/in_accel_x_thresh_either_hysteresis
766 What: /sys/.../events/in_accel_y_thresh_rising_hysteresis
767 What: /sys/.../events/in_accel_y_thresh_falling_hysteresis
768 What: /sys/.../events/in_accel_y_thresh_either_hysteresis
769 What: /sys/.../events/in_accel_z_thresh_rising_hysteresis
770 What: /sys/.../events/in_accel_z_thresh_falling_hysteresis
771 What: /sys/.../events/in_accel_z_thresh_either_hysteresis
772 What: /sys/.../events/in_anglvel_x_thresh_rising_hysteresis
773 What: /sys/.../events/in_anglvel_x_thresh_falling_hysteresis
774 What: /sys/.../events/in_anglvel_x_thresh_either_hysteresis
775 What: /sys/.../events/in_anglvel_y_thresh_rising_hysteresis
776 What: /sys/.../events/in_anglvel_y_thresh_falling_hysteresis
777 What: /sys/.../events/in_anglvel_y_thresh_either_hysteresis
778 What: /sys/.../events/in_anglvel_z_thresh_rising_hysteresis
779 What: /sys/.../events/in_anglvel_z_thresh_falling_hysteresis
780 What: /sys/.../events/in_anglvel_z_thresh_either_hysteresis
781 What: /sys/.../events/in_magn_x_thresh_rising_hysteresis
782 What: /sys/.../events/in_magn_x_thresh_falling_hysteresis
783 What: /sys/.../events/in_magn_x_thresh_either_hysteresis
784 What: /sys/.../events/in_magn_y_thresh_rising_hysteresis
785 What: /sys/.../events/in_magn_y_thresh_falling_hysteresis
786 What: /sys/.../events/in_magn_y_thresh_either_hysteresis
787 What: /sys/.../events/in_magn_z_thresh_rising_hysteresis
788 What: /sys/.../events/in_magn_z_thresh_falling_hysteresis
789 What: /sys/.../events/in_magn_z_thresh_either_hysteresis
790 What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_hysteresis
791 What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_hysteresis
792 What: /sys/.../events/in_rot_from_north_magnetic_thresh_either_hysteresis
793 What: /sys/.../events/in_rot_from_north_true_thresh_rising_hysteresis
794 What: /sys/.../events/in_rot_from_north_true_thresh_falling_hysteresis
795 What: /sys/.../events/in_rot_from_north_true_thresh_either_hysteresis
796 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_hysteresis
797 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_hysteresis
798 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_either_hysteresis
799 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_hysteresis
800 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_hysteresis
801 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_either_hysteresis
802 What: /sys/.../events/in_voltageY_thresh_rising_hysteresis
803 What: /sys/.../events/in_voltageY_thresh_falling_hysteresis
804 What: /sys/.../events/in_voltageY_thresh_either_hysteresis
805 What: /sys/.../events/in_tempY_thresh_rising_hysteresis
806 What: /sys/.../events/in_tempY_thresh_falling_hysteresis
807 What: /sys/.../events/in_tempY_thresh_either_hysteresis
808 What: /sys/.../events/in_illuminance0_thresh_falling_hysteresis
809 what: /sys/.../events/in_illuminance0_thresh_rising_hysteresis
810 what: /sys/.../events/in_illuminance0_thresh_either_hysteresis
811 what: /sys/.../events/in_proximity0_thresh_falling_hysteresis
812 what: /sys/.../events/in_proximity0_thresh_rising_hysteresis
813 what: /sys/.../events/in_proximity0_thresh_either_hysteresis
815 Contact: linux-iio@vger.kernel.org
817 Specifies the hysteresis of threshold that the device is comparing
818 against for the events enabled by
819 <type>Y[_name]_thresh[_(rising|falling)]_hysteresis.
820 If separate attributes exist for the two directions, but
821 direction is not specified for this attribute, then a single
822 hysteresis value applies to both directions.
823 For falling events the hysteresis is added to the _value attribute for
824 this event to get the upper threshold for when the event goes back to
825 normal, for rising events the hysteresis is subtracted from the _value
826 attribute. E.g. if in_voltage0_raw_thresh_rising_value is set to 1200
827 and in_voltage0_raw_thresh_rising_hysteresis is set to 50. The event
828 will get activated once in_voltage0_raw goes above 1200 and will become
829 deactivated again once the value falls below 1150.
831 What: /sys/.../events/in_accel_x_raw_roc_rising_value
832 What: /sys/.../events/in_accel_x_raw_roc_falling_value
833 What: /sys/.../events/in_accel_y_raw_roc_rising_value
834 What: /sys/.../events/in_accel_y_raw_roc_falling_value
835 What: /sys/.../events/in_accel_z_raw_roc_rising_value
836 What: /sys/.../events/in_accel_z_raw_roc_falling_value
837 What: /sys/.../events/in_anglvel_x_raw_roc_rising_value
838 What: /sys/.../events/in_anglvel_x_raw_roc_falling_value
839 What: /sys/.../events/in_anglvel_y_raw_roc_rising_value
840 What: /sys/.../events/in_anglvel_y_raw_roc_falling_value
841 What: /sys/.../events/in_anglvel_z_raw_roc_rising_value
842 What: /sys/.../events/in_anglvel_z_raw_roc_falling_value
843 What: /sys/.../events/in_magn_x_raw_roc_rising_value
844 What: /sys/.../events/in_magn_x_raw_roc_falling_value
845 What: /sys/.../events/in_magn_y_raw_roc_rising_value
846 What: /sys/.../events/in_magn_y_raw_roc_falling_value
847 What: /sys/.../events/in_magn_z_raw_roc_rising_value
848 What: /sys/.../events/in_magn_z_raw_roc_falling_value
849 What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_rising_value
850 What: /sys/.../events/in_rot_from_north_magnetic_raw_roc_falling_value
851 What: /sys/.../events/in_rot_from_north_true_raw_roc_rising_value
852 What: /sys/.../events/in_rot_from_north_true_raw_roc_falling_value
853 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_rising_value
854 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_raw_roc_falling_value
855 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_rising_value
856 What: /sys/.../events/in_rot_from_north_true_tilt_comp_raw_roc_falling_value
857 What: /sys/.../events/in_voltageY_supply_raw_roc_rising_value
858 What: /sys/.../events/in_voltageY_supply_raw_roc_falling_value
859 What: /sys/.../events/in_voltageY_raw_roc_rising_value
860 What: /sys/.../events/in_voltageY_raw_roc_falling_value
861 What: /sys/.../events/in_tempY_raw_roc_rising_value
862 What: /sys/.../events/in_tempY_raw_roc_falling_value
863 KernelVersion: 2.6.37
864 Contact: linux-iio@vger.kernel.org
866 Specifies the value of rate of change threshold that the
867 device is comparing against for the events enabled by
868 <type>[Y][_name]_roc[_rising|falling]_en.
869 If separate attributes exist for the two directions,
870 but direction is not specified for this attribute,
871 then a single threshold value applies to both directions.
872 The raw or input element of the name indicates whether the
873 value is in raw device units or in processed units (as _raw
874 and _input do on sysfs direct channel read attributes).
876 What: /sys/.../events/in_accel_x_thresh_rising_period
877 What: /sys/.../events/in_accel_x_thresh_falling_period
878 What: /sys/.../events/in_accel_x_roc_rising_period
879 What: /sys/.../events/in_accel_x_roc_falling_period
880 What: /sys/.../events/in_accel_y_thresh_rising_period
881 What: /sys/.../events/in_accel_y_thresh_falling_period
882 What: /sys/.../events/in_accel_y_roc_rising_period
883 What: /sys/.../events/in_accel_y_roc_falling_period
884 What: /sys/.../events/in_accel_z_thresh_rising_period
885 What: /sys/.../events/in_accel_z_thresh_falling_period
886 What: /sys/.../events/in_accel_z_roc_rising_period
887 What: /sys/.../events/in_accel_z_roc_falling_period
888 What: /sys/.../events/in_anglvel_x_thresh_rising_period
889 What: /sys/.../events/in_anglvel_x_thresh_falling_period
890 What: /sys/.../events/in_anglvel_x_roc_rising_period
891 What: /sys/.../events/in_anglvel_x_roc_falling_period
892 What: /sys/.../events/in_anglvel_y_thresh_rising_period
893 What: /sys/.../events/in_anglvel_y_thresh_falling_period
894 What: /sys/.../events/in_anglvel_y_roc_rising_period
895 What: /sys/.../events/in_anglvel_y_roc_falling_period
896 What: /sys/.../events/in_anglvel_z_thresh_rising_period
897 What: /sys/.../events/in_anglvel_z_thresh_falling_period
898 What: /sys/.../events/in_anglvel_z_roc_rising_period
899 What: /sys/.../events/in_anglvel_z_roc_falling_period
900 What: /sys/.../events/in_magn_x_thresh_rising_period
901 What: /sys/.../events/in_magn_x_thresh_falling_period
902 What: /sys/.../events/in_magn_x_roc_rising_period
903 What: /sys/.../events/in_magn_x_roc_falling_period
904 What: /sys/.../events/in_magn_y_thresh_rising_period
905 What: /sys/.../events/in_magn_y_thresh_falling_period
906 What: /sys/.../events/in_magn_y_roc_rising_period
907 What: /sys/.../events/in_magn_y_roc_falling_period
908 What: /sys/.../events/in_magn_z_thresh_rising_period
909 What: /sys/.../events/in_magn_z_thresh_falling_period
910 What: /sys/.../events/in_magn_z_roc_rising_period
911 What: /sys/.../events/in_magn_z_roc_falling_period
912 What: /sys/.../events/in_rot_from_north_magnetic_thresh_rising_period
913 What: /sys/.../events/in_rot_from_north_magnetic_thresh_falling_period
914 What: /sys/.../events/in_rot_from_north_magnetic_roc_rising_period
915 What: /sys/.../events/in_rot_from_north_magnetic_roc_falling_period
916 What: /sys/.../events/in_rot_from_north_true_thresh_rising_period
917 What: /sys/.../events/in_rot_from_north_true_thresh_falling_period
918 What: /sys/.../events/in_rot_from_north_true_roc_rising_period
919 What: /sys/.../events/in_rot_from_north_true_roc_falling_period
920 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_rising_period
921 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_thresh_falling_period
922 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_rising_period
923 What: /sys/.../events/in_rot_from_north_magnetic_tilt_comp_roc_falling_period
924 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_rising_period
925 What: /sys/.../events/in_rot_from_north_true_tilt_comp_thresh_falling_period
926 What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_rising_period
927 What: /sys/.../events/in_rot_from_north_true_tilt_comp_roc_falling_period
928 What: /sys/.../events/in_voltageY_supply_thresh_rising_period
929 What: /sys/.../events/in_voltageY_supply_thresh_falling_period
930 What: /sys/.../events/in_voltageY_supply_roc_rising_period
931 What: /sys/.../events/in_voltageY_supply_roc_falling_period
932 What: /sys/.../events/in_voltageY_thresh_rising_period
933 What: /sys/.../events/in_voltageY_thresh_falling_period
934 What: /sys/.../events/in_voltageY_roc_rising_period
935 What: /sys/.../events/in_voltageY_roc_falling_period
936 What: /sys/.../events/in_tempY_thresh_rising_period
937 What: /sys/.../events/in_tempY_thresh_falling_period
938 What: /sys/.../events/in_tempY_roc_rising_period
939 What: /sys/.../events/in_tempY_roc_falling_period
940 What: /sys/.../events/in_accel_x&y&z_mag_falling_period
941 What: /sys/.../events/in_intensity0_thresh_period
942 What: /sys/.../events/in_proximity0_thresh_period
943 What: /sys/.../events/in_activity_still_thresh_rising_period
944 What: /sys/.../events/in_activity_still_thresh_falling_period
945 What: /sys/.../events/in_activity_walking_thresh_rising_period
946 What: /sys/.../events/in_activity_walking_thresh_falling_period
947 What: /sys/.../events/in_activity_jogging_thresh_rising_period
948 What: /sys/.../events/in_activity_jogging_thresh_falling_period
949 What: /sys/.../events/in_activity_running_thresh_rising_period
950 What: /sys/.../events/in_activity_running_thresh_falling_period
951 KernelVersion: 2.6.37
952 Contact: linux-iio@vger.kernel.org
954 Period of time (in seconds) for which the condition must be
955 met before an event is generated. If direction is not
956 specified then this period applies to both directions.
958 What: /sys/.../events/in_accel_thresh_rising_low_pass_filter_3db
959 What: /sys/.../events/in_anglvel_thresh_rising_low_pass_filter_3db
960 What: /sys/.../events/in_magn_thresh_rising_low_pass_filter_3db
962 Contact: linux-iio@vger.kernel.org
964 If a low pass filter can be applied to the event generation
965 this property gives its 3db frequency in Hz.
966 A value of zero disables the filter.
968 What: /sys/.../events/in_accel_thresh_rising_high_pass_filter_3db
969 What: /sys/.../events/in_anglvel_thresh_rising_high_pass_filter_3db
970 What: /sys/.../events/in_magn_thresh_rising_high_pass_filter_3db
972 Contact: linux-iio@vger.kernel.org
974 If a high pass filter can be applied to the event generation
975 this property gives its 3db frequency in Hz.
976 A value of zero disables the filter.
978 What: /sys/.../events/in_activity_still_thresh_rising_en
979 What: /sys/.../events/in_activity_still_thresh_falling_en
980 What: /sys/.../events/in_activity_walking_thresh_rising_en
981 What: /sys/.../events/in_activity_walking_thresh_falling_en
982 What: /sys/.../events/in_activity_jogging_thresh_rising_en
983 What: /sys/.../events/in_activity_jogging_thresh_falling_en
984 What: /sys/.../events/in_activity_running_thresh_rising_en
985 What: /sys/.../events/in_activity_running_thresh_falling_en
987 Contact: linux-iio@vger.kernel.org
989 Enables or disables activitity events. Depending on direction
990 an event is generated when sensor ENTERS or LEAVES a given state.
992 What: /sys/.../events/in_activity_still_thresh_rising_value
993 What: /sys/.../events/in_activity_still_thresh_falling_value
994 What: /sys/.../events/in_activity_walking_thresh_rising_value
995 What: /sys/.../events/in_activity_walking_thresh_falling_value
996 What: /sys/.../events/in_activity_jogging_thresh_rising_value
997 What: /sys/.../events/in_activity_jogging_thresh_falling_value
998 What: /sys/.../events/in_activity_running_thresh_rising_value
999 What: /sys/.../events/in_activity_running_thresh_falling_value
1001 Contact: linux-iio@vger.kernel.org
1003 Confidence value (in units as percentage) to be used
1004 for deciding when an event should be generated. E.g for
1005 running: If the confidence value reported by the sensor
1006 is greater than in_activity_running_thresh_rising_value
1007 then the sensor ENTERS running state. Conversely, if the
1008 confidence value reported by the sensor is lower than
1009 in_activity_running_thresh_falling_value then the sensor
1010 is LEAVING running state.
1012 What: /sys/.../iio:deviceX/events/in_accel_mag_en
1013 What: /sys/.../iio:deviceX/events/in_accel_mag_rising_en
1014 What: /sys/.../iio:deviceX/events/in_accel_mag_falling_en
1015 What: /sys/.../iio:deviceX/events/in_accel_x_mag_en
1016 What: /sys/.../iio:deviceX/events/in_accel_x_mag_rising_en
1017 What: /sys/.../iio:deviceX/events/in_accel_x_mag_falling_en
1018 What: /sys/.../iio:deviceX/events/in_accel_y_mag_en
1019 What: /sys/.../iio:deviceX/events/in_accel_y_mag_rising_en
1020 What: /sys/.../iio:deviceX/events/in_accel_y_mag_falling_en
1021 What: /sys/.../iio:deviceX/events/in_accel_z_mag_en
1022 What: /sys/.../iio:deviceX/events/in_accel_z_mag_rising_en
1023 What: /sys/.../iio:deviceX/events/in_accel_z_mag_falling_en
1024 What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_rising_en
1025 What: /sys/.../iio:deviceX/events/in_accel_x&y&z_mag_falling_en
1026 KernelVersion: 2.6.37
1027 Contact: linux-iio@vger.kernel.org
1029 Similar to in_accel_x_thresh[_rising|_falling]_en, but here the
1030 magnitude of the channel is compared to the threshold, not its
1033 What: /sys/.../events/in_accel_raw_mag_value
1034 What: /sys/.../events/in_accel_x_raw_mag_rising_value
1035 What: /sys/.../events/in_accel_y_raw_mag_rising_value
1036 What: /sys/.../events/in_accel_z_raw_mag_rising_value
1037 KernelVersion: 2.6.37
1038 Contact: linux-iio@vger.kernel.org
1040 The value to which the magnitude of the channel is compared. If
1041 number or direction is not specified, applies to all channels of
1044 What: /sys/.../events/in_steps_change_en
1046 Contact: linux-iio@vger.kernel.org
1048 Event generated when channel passes a threshold on the absolute
1049 change in value. E.g. for steps: a step change event is
1050 generated each time the user takes N steps, where N is set using
1051 in_steps_change_value.
1053 What: /sys/.../events/in_steps_change_value
1055 Contact: linux-iio@vger.kernel.org
1057 Specifies the value of change threshold that the
1058 device is comparing against for the events enabled by
1059 <type>[Y][_name]_roc[_rising|falling|]_en. E.g. for steps:
1060 if set to 3, a step change event will be generated every 3
1063 What: /sys/bus/iio/devices/iio:deviceX/trigger/current_trigger
1064 KernelVersion: 2.6.35
1065 Contact: linux-iio@vger.kernel.org
1067 The name of the trigger source being used, as per string given
1068 in /sys/class/iio/triggerY/name.
1070 What: /sys/bus/iio/devices/iio:deviceX/buffer/length
1071 KernelVersion: 2.6.35
1072 Contact: linux-iio@vger.kernel.org
1074 Number of scans contained by the buffer.
1076 What: /sys/bus/iio/devices/iio:deviceX/buffer/enable
1077 KernelVersion: 2.6.35
1078 Contact: linux-iio@vger.kernel.org
1080 Actually start the buffer capture up. Will start trigger
1081 if first device and appropriate.
1083 What: /sys/bus/iio/devices/iio:deviceX/scan_elements
1084 KernelVersion: 2.6.37
1085 Contact: linux-iio@vger.kernel.org
1087 Directory containing interfaces for elements that will be
1088 captured for a single triggered sample set in the buffer.
1090 What: /sys/.../iio:deviceX/scan_elements/in_accel_x_en
1091 What: /sys/.../iio:deviceX/scan_elements/in_accel_y_en
1092 What: /sys/.../iio:deviceX/scan_elements/in_accel_z_en
1093 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en
1094 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en
1095 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en
1096 What: /sys/.../iio:deviceX/scan_elements/in_magn_x_en
1097 What: /sys/.../iio:deviceX/scan_elements/in_magn_y_en
1098 What: /sys/.../iio:deviceX/scan_elements/in_magn_z_en
1099 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en
1100 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en
1101 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en
1102 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en
1103 What: /sys/.../iio:deviceX/scan_elements/in_timestamp_en
1104 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en
1105 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_en
1106 What: /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
1107 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_en
1108 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_en
1109 What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_en
1110 What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_en
1111 What: /sys/.../iio:deviceX/scan_elements/in_incli_x_en
1112 What: /sys/.../iio:deviceX/scan_elements/in_incli_y_en
1113 What: /sys/.../iio:deviceX/scan_elements/in_pressureY_en
1114 What: /sys/.../iio:deviceX/scan_elements/in_pressure_en
1115 What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en
1116 What: /sys/.../iio:deviceX/scan_elements/in_proximity_en
1117 KernelVersion: 2.6.37
1118 Contact: linux-iio@vger.kernel.org
1120 Scan element control for triggered data capture.
1122 What: /sys/.../iio:deviceX/scan_elements/in_accel_type
1123 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_type
1124 What: /sys/.../iio:deviceX/scan_elements/in_magn_type
1125 What: /sys/.../iio:deviceX/scan_elements/in_incli_type
1126 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_type
1127 What: /sys/.../iio:deviceX/scan_elements/in_voltage_type
1128 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type
1129 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_type
1130 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_type
1131 What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_type
1132 What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_type
1133 What: /sys/.../iio:deviceX/scan_elements/in_timestamp_type
1134 What: /sys/.../iio:deviceX/scan_elements/in_pressureY_type
1135 What: /sys/.../iio:deviceX/scan_elements/in_pressure_type
1136 What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type
1137 What: /sys/.../iio:deviceX/scan_elements/in_proximity_type
1138 KernelVersion: 2.6.37
1139 Contact: linux-iio@vger.kernel.org
1141 Description of the scan element data storage within the buffer
1142 and hence the form in which it is read from user-space.
1143 Form is [be|le]:[s|u]bits/storagebits[>>shift].
1144 be or le specifies big or little endian. s or u specifies if
1145 signed (2's complement) or unsigned. bits is the number of bits
1146 of data and storagebits is the space (after padding) that it
1147 occupies in the buffer. shift if specified, is the shift that
1148 needs to be applied prior to masking out unused bits. Some
1149 devices put their data in the middle of the transferred elements
1150 with additional information on both sides. Note that some
1151 devices will have additional information in the unused bits
1152 so to get a clean value, the bits value must be used to mask
1153 the buffer output value appropriately. The storagebits value
1154 also specifies the data alignment. So s48/64>>2 will be a
1155 signed 48 bit integer stored in a 64 bit location aligned to
1156 a 64 bit boundary. To obtain the clean value, shift right 2
1157 and apply a mask to zero the top 16 bits of the result.
1158 For other storage combinations this attribute will be extended
1161 What: /sys/.../iio:deviceX/scan_elements/in_accel_type_available
1162 KernelVersion: 2.6.37
1163 Contact: linux-iio@vger.kernel.org
1165 If the type parameter can take one of a small set of values,
1166 this attribute lists them.
1168 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_index
1169 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index
1170 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_index
1171 What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_index
1172 What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_index
1173 What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_index
1174 What: /sys/.../iio:deviceX/scan_elements/in_accel_x_index
1175 What: /sys/.../iio:deviceX/scan_elements/in_accel_y_index
1176 What: /sys/.../iio:deviceX/scan_elements/in_accel_z_index
1177 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index
1178 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index
1179 What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index
1180 What: /sys/.../iio:deviceX/scan_elements/in_magn_x_index
1181 What: /sys/.../iio:deviceX/scan_elements/in_magn_y_index
1182 What: /sys/.../iio:deviceX/scan_elements/in_magn_z_index
1183 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index
1184 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index
1185 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index
1186 What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index
1187 What: /sys/.../iio:deviceX/scan_elements/in_incli_x_index
1188 What: /sys/.../iio:deviceX/scan_elements/in_incli_y_index
1189 What: /sys/.../iio:deviceX/scan_elements/in_timestamp_index
1190 What: /sys/.../iio:deviceX/scan_elements/in_pressureY_index
1191 What: /sys/.../iio:deviceX/scan_elements/in_pressure_index
1192 What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index
1193 What: /sys/.../iio:deviceX/scan_elements/in_proximity_index
1194 KernelVersion: 2.6.37
1195 Contact: linux-iio@vger.kernel.org
1197 A single positive integer specifying the position of this
1198 scan element in the buffer. Note these are not dependent on
1199 what is enabled and may not be contiguous. Thus for user-space
1200 to establish the full layout these must be used in conjunction
1201 with all _en attributes to establish which channels are present,
1202 and the relevant _type attributes to establish the data storage
1205 What: /sys/.../iio:deviceX/in_activity_still_input
1206 What: /sys/.../iio:deviceX/in_activity_walking_input
1207 What: /sys/.../iio:deviceX/in_activity_jogging_input
1208 What: /sys/.../iio:deviceX/in_activity_running_input
1210 Contact: linux-iio@vger.kernel.org
1212 This attribute is used to read the confidence for an activity
1213 expressed in units as percentage.
1215 What: /sys/.../iio:deviceX/in_anglvel_z_quadrature_correction_raw
1216 KernelVersion: 2.6.38
1217 Contact: linux-iio@vger.kernel.org
1219 This attribute is used to read the amount of quadrature error
1220 present in the device at a given time.
1222 What: /sys/.../iio:deviceX/in_accelX_power_mode
1224 Contact: linux-iio@vger.kernel.org
1226 Specifies the chip power mode.
1227 low_noise: reduce noise level from ADC,
1228 low_power: enable low current consumption.
1229 For a list of available output power modes read
1230 in_accel_power_mode_available.
1232 What: /sys/.../iio:deviceX/in_energy_input
1233 What: /sys/.../iio:deviceX/in_energy_raw
1235 Contact: linux-iio@vger.kernel.org
1237 This attribute is used to read the energy value reported by the
1238 device (e.g.: human activity sensors report energy burnt by the
1239 user). Units after application of scale are Joules.
1241 What: /sys/.../iio:deviceX/in_distance_input
1242 What: /sys/.../iio:deviceX/in_distance_raw
1244 Contact: linux-iio@vger.kernel.org
1246 This attribute is used to read the measured distance to an object
1247 or the distance covered by the user since the last reboot while
1248 activated. Units after application of scale are meters.
1250 What: /sys/bus/iio/devices/iio:deviceX/store_eeprom
1251 KernelVersion: 3.4.0
1252 Contact: linux-iio@vger.kernel.org
1254 Writing '1' stores the current device configuration into
1255 on-chip EEPROM. After power-up or chip reset the device will
1256 automatically load the saved configuration.
1258 What: /sys/.../iio:deviceX/in_proximity_raw
1259 What: /sys/.../iio:deviceX/in_proximity_input
1260 What: /sys/.../iio:deviceX/in_proximityY_raw
1262 Contact: linux-iio@vger.kernel.org
1264 Proximity measurement indicating that some
1265 object is near the sensor, usually by observing
1266 reflectivity of infrared or ultrasound emitted.
1267 Often these sensors are unit less and as such conversion
1268 to SI units is not possible. Higher proximity measurements
1269 indicate closer objects, and vice versa. Units after
1270 application of scale and offset are meters.
1272 What: /sys/.../iio:deviceX/in_illuminance_input
1273 What: /sys/.../iio:deviceX/in_illuminance_raw
1274 What: /sys/.../iio:deviceX/in_illuminanceY_input
1275 What: /sys/.../iio:deviceX/in_illuminanceY_raw
1276 What: /sys/.../iio:deviceX/in_illuminanceY_mean_raw
1277 What: /sys/.../iio:deviceX/in_illuminance_ir_raw
1278 What: /sys/.../iio:deviceX/in_illuminance_clear_raw
1280 Contact: linux-iio@vger.kernel.org
1282 Illuminance measurement, units after application of scale
1285 What: /sys/.../iio:deviceX/in_intensityY_raw
1286 What: /sys/.../iio:deviceX/in_intensityY_ir_raw
1287 What: /sys/.../iio:deviceX/in_intensityY_both_raw
1288 What: /sys/.../iio:deviceX/in_intensityY_uv_raw
1290 Contact: linux-iio@vger.kernel.org
1292 Unit-less light intensity. Modifiers both and ir indicate
1293 that measurements contains visible and infrared light
1294 components or just infrared light, respectively. Modifier uv indicates
1295 that measurements contain ultraviolet light components.
1297 What: /sys/.../iio:deviceX/in_uvindex_input
1299 Contact: linux-iio@vger.kernel.org
1301 UV light intensity index measuring the human skin's response to
1302 different wavelength of sunlight weighted according to the
1303 standardised CIE Erythemal Action Spectrum. UV index values range
1304 from 0 (low) to >=11 (extreme).
1306 What: /sys/.../iio:deviceX/in_intensity_red_integration_time
1307 What: /sys/.../iio:deviceX/in_intensity_green_integration_time
1308 What: /sys/.../iio:deviceX/in_intensity_blue_integration_time
1309 What: /sys/.../iio:deviceX/in_intensity_clear_integration_time
1310 What: /sys/.../iio:deviceX/in_illuminance_integration_time
1312 Contact: linux-iio@vger.kernel.org
1314 This attribute is used to get/set the integration time in
1317 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_integration_time
1319 Contact: linux-iio@vger.kernel.org
1321 Number of seconds in which to compute speed.
1323 What: /sys/bus/iio/devices/iio:deviceX/in_rot_quaternion_raw
1325 Contact: linux-iio@vger.kernel.org
1327 Raw value of quaternion components using a format
1328 x y z w. Here x, y, and z component represents the axis about
1329 which a rotation will occur and w component represents the
1332 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_tilt_comp_raw
1333 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_tilt_comp_raw
1334 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_magnetic_raw
1335 What: /sys/bus/iio/devices/iio:deviceX/in_rot_from_north_true_raw
1337 Contact: linux-iio@vger.kernel.org
1339 Raw value of rotation from true/magnetic north measured with
1340 or without compensation from tilt sensors.
1342 What: /sys/bus/iio/devices/iio:deviceX/in_currentX_raw
1343 What: /sys/bus/iio/devices/iio:deviceX/in_currentX_i_raw
1344 What: /sys/bus/iio/devices/iio:deviceX/in_currentX_q_raw
1346 Contact: linux-iio@vger.kernel.org
1348 Raw current measurement from channel X. Units are in milliamps
1349 after application of scale and offset. If no offset or scale is
1350 present, output should be considered as processed with the
1353 Channels with 'i' and 'q' modifiers always exist in pairs and both
1354 channels refer to the same signal. The 'i' channel contains the in-phase
1355 component of the signal while the 'q' channel contains the quadrature
1358 What: /sys/.../iio:deviceX/in_energy_en
1359 What: /sys/.../iio:deviceX/in_distance_en
1360 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_en
1361 What: /sys/.../iio:deviceX/in_steps_en
1363 Contact: linux-iio@vger.kernel.org
1365 Activates a device feature that runs in firmware/hardware.
1366 E.g. for steps: the pedometer saves power while not used;
1367 when activated, it will count the steps taken by the user in
1368 firmware and export them through in_steps_input.
1370 What: /sys/.../iio:deviceX/in_steps_input
1372 Contact: linux-iio@vger.kernel.org
1374 This attribute is used to read the number of steps taken by the user
1375 since the last reboot while activated.
1377 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_input
1378 What: /sys/.../iio:deviceX/in_velocity_sqrt(x^2+y^2+z^2)_raw
1380 Contact: linux-iio@vger.kernel.org
1382 This attribute is used to read the current speed value of the
1383 user (which is the norm or magnitude of the velocity vector).
1384 Units after application of scale are m/s.
1386 What: /sys/.../iio:deviceX/in_steps_debounce_count
1388 Contact: linux-iio@vger.kernel.org
1390 Specifies the number of steps that must occur within
1391 in_steps_filter_debounce_time for the pedometer to decide the
1392 consumer is making steps.
1394 What: /sys/.../iio:deviceX/in_steps_debounce_time
1396 Contact: linux-iio@vger.kernel.org
1398 Specifies number of seconds in which we compute the steps
1399 that occur in order to decide if the consumer is making steps.
1401 What: /sys/bus/iio/devices/iio:deviceX/buffer/watermark
1403 Contact: linux-iio@vger.kernel.org
1405 A single positive integer specifying the maximum number of scan
1406 elements to wait for.
1407 Poll will block until the watermark is reached.
1408 Blocking read will wait until the minimum between the requested
1409 read amount or the low water mark is available.
1410 Non-blocking read will retrieve the available samples from the
1411 buffer even if there are less samples then watermark level. This
1412 allows the application to block on poll with a timeout and read
1413 the available samples after the timeout expires and thus have a
1414 maximum delay guarantee.
1416 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled
1418 Contact: linux-iio@vger.kernel.org
1420 A read-only boolean value that indicates if the hardware fifo is
1421 currently enabled or disabled. If the device does not have a
1422 hardware fifo this entry is not present.
1423 The hardware fifo is enabled when the buffer is enabled if the
1424 current hardware fifo watermark level is set and other current
1425 device settings allows it (e.g. if a trigger is set that samples
1426 data differently that the hardware fifo does then hardware fifo
1428 If the hardware fifo is enabled and the level of the hardware
1429 fifo reaches the hardware fifo watermark level the device will
1430 flush its hardware fifo to the device buffer. Doing a non
1431 blocking read on the device when no samples are present in the
1432 device buffer will also force a flush.
1433 When the hardware fifo is enabled there is no need to use a
1434 trigger to use buffer mode since the watermark settings
1435 guarantees that the hardware fifo is flushed to the device
1438 What: /sys/bus/iio/devices/iio:device*/buffer/hwfifo_timeout
1440 Contact: linux-iio@vger.kernel.org
1442 A read/write property to provide capability to delay reporting of
1443 samples till a timeout is reached. This allows host processors to
1444 sleep, while the sensor is storing samples in its internal fifo.
1445 The maximum timeout in seconds can be specified by setting
1446 hwfifo_timeout.The current delay can be read by reading
1447 hwfifo_timeout. A value of 0 means that there is no timeout.
1449 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark
1451 Contact: linux-iio@vger.kernel.org
1453 Read-only entry that contains a single integer specifying the
1454 current watermark level for the hardware fifo. If the device
1455 does not have a hardware fifo this entry is not present.
1456 The watermark level for the hardware fifo is set by the driver
1457 based on the value set by the user in buffer/watermark but
1458 taking into account hardware limitations (e.g. most hardware
1459 buffers are limited to 32-64 samples, some hardware buffers
1460 watermarks are fixed or have minimum levels). A value of 0
1461 means that the hardware watermark is unset.
1463 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_min
1465 Contact: linux-iio@vger.kernel.org
1467 A single positive integer specifying the minimum watermark level
1468 for the hardware fifo of this device. If the device does not
1469 have a hardware fifo this entry is not present.
1470 If the user sets buffer/watermark to a value less than this one,
1471 then the hardware watermark will remain unset.
1473 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_max
1475 Contact: linux-iio@vger.kernel.org
1477 A single positive integer specifying the maximum watermark level
1478 for the hardware fifo of this device. If the device does not
1479 have a hardware fifo this entry is not present.
1480 If the user sets buffer/watermark to a value greater than this
1481 one, then the hardware watermark will be capped at this value.
1483 What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_watermark_available
1485 Contact: linux-iio@vger.kernel.org
1487 A list of positive integers specifying the available watermark
1488 levels for the hardware fifo. This entry is optional and if it
1489 is not present it means that all the values between
1490 hwfifo_watermark_min and hwfifo_watermark_max are supported.
1491 If the user sets buffer/watermark to a value greater than
1492 hwfifo_watermak_min but not equal to any of the values in this
1493 list, the driver will chose an appropriate value for the
1494 hardware fifo watermark level.
1496 What: /sys/bus/iio/devices/iio:deviceX/in_temp_calibemissivity
1497 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_calibemissivity
1498 What: /sys/bus/iio/devices/iio:deviceX/in_temp_object_calibemissivity
1499 What: /sys/bus/iio/devices/iio:deviceX/in_tempX_object_calibemissivity
1501 Contact: linux-iio@vger.kernel.org
1503 The emissivity ratio of the surface in the field of view of the
1504 contactless temperature sensor. Emissivity varies from 0 to 1,
1505 with 1 being the emissivity of a black body.
1507 What: /sys/bus/iio/devices/iio:deviceX/in_magn_x_oversampling_ratio
1508 What: /sys/bus/iio/devices/iio:deviceX/in_magn_y_oversampling_ratio
1509 What: /sys/bus/iio/devices/iio:deviceX/in_magn_z_oversampling_ratio
1511 Contact: linux-iio@vger.kernel.org
1513 Hardware applied number of measurements for acquiring one
1514 data point. The HW will do <type>[_name]_oversampling_ratio
1515 measurements and return the average value as output data. Each
1516 value resulted from <type>[_name]_oversampling_ratio measurements
1517 is considered as one sample for <type>[_name]_sampling_frequency.
1519 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_raw
1520 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_raw
1521 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_co2_raw
1522 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_co2_raw
1523 What: /sys/bus/iio/devices/iio:deviceX/in_concentration_voc_raw
1524 What: /sys/bus/iio/devices/iio:deviceX/in_concentrationX_voc_raw
1526 Contact: linux-iio@vger.kernel.org
1528 Raw (unscaled no offset etc.) percentage reading of a substance.
1530 What: /sys/bus/iio/devices/iio:deviceX/in_resistance_raw
1531 What: /sys/bus/iio/devices/iio:deviceX/in_resistanceX_raw
1532 What: /sys/bus/iio/devices/iio:deviceX/out_resistance_raw
1533 What: /sys/bus/iio/devices/iio:deviceX/out_resistanceX_raw
1535 Contact: linux-iio@vger.kernel.org
1537 Raw (unscaled no offset etc.) resistance reading that can be processed
1540 What: /sys/bus/iio/devices/iio:deviceX/heater_enable
1541 KernelVersion: 4.1.0
1542 Contact: linux-iio@vger.kernel.org
1544 '1' (enable) or '0' (disable) specifying the enable
1545 of heater function. Same reading values apply
1546 This ABI is especially applicable for humidity sensors
1547 to heatup the device and get rid of any condensation
1548 in some humidity environment
1550 What: /sys/bus/iio/devices/iio:deviceX/in_ph_raw
1552 Contact: linux-iio@vger.kernel.org
1554 Raw (unscaled no offset etc.) pH reading of a substance as a negative
1555 base-10 logarithm of hydrodium ions in a litre of water.
1557 What: /sys/bus/iio/devices/iio:deviceX/mount_matrix
1558 What: /sys/bus/iio/devices/iio:deviceX/in_mount_matrix
1559 What: /sys/bus/iio/devices/iio:deviceX/out_mount_matrix
1560 What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_mount_matrix
1561 What: /sys/bus/iio/devices/iio:deviceX/in_accel_mount_matrix
1563 Contact: linux-iio@vger.kernel.org
1565 Mounting matrix for IIO sensors. This is a rotation matrix which
1566 informs userspace about sensor chip's placement relative to the
1567 main hardware it is mounted on.
1568 Main hardware placement is defined according to the local
1569 reference frame related to the physical quantity the sensor
1571 Given that the rotation matrix is defined in a board specific
1572 way (platform data and / or device-tree), the main hardware
1573 reference frame definition is left to the implementor's choice
1574 (see below for a magnetometer example).
1575 Applications should apply this rotation matrix to samples so
1576 that when main hardware reference frame is aligned onto local
1577 reference frame, then sensor chip reference frame is also
1578 perfectly aligned with it.
1579 Matrix is a 3x3 unitary matrix and typically looks like
1580 [0, 1, 0; 1, 0, 0; 0, 0, -1]. Identity matrix
1581 [1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and main hardware
1582 are perfectly aligned with each other.
1584 For example, a mounting matrix for a magnetometer sensor informs
1585 userspace about sensor chip's ORIENTATION relative to the main
1587 More specifically, main hardware orientation is defined with
1588 respect to the LOCAL EARTH GEOMAGNETIC REFERENCE FRAME where :
1589 * Y is in the ground plane and positive towards magnetic North ;
1590 * X is in the ground plane, perpendicular to the North axis and
1591 positive towards the East ;
1592 * Z is perpendicular to the ground plane and positive upwards.
1594 An implementor might consider that for a hand-held device, a
1595 'natural' orientation would be 'front facing camera at the top'.
1596 The main hardware reference frame could then be described as :
1597 * Y is in the plane of the screen and is positive towards the
1599 * X is in the plane of the screen, perpendicular to Y axis, and
1600 positive towards the right hand side of the screen ;
1601 * Z is perpendicular to the screen plane and positive out of the
1603 Another example for a quadrotor UAV might be :
1604 * Y is in the plane of the propellers and positive towards the
1606 * X is in the plane of the propellers, perpendicular to Y axis,
1607 and positive towards the starboard side of the UAV ;
1608 * Z is perpendicular to propellers plane and positive upwards.
1610 What: /sys/bus/iio/devices/iio:deviceX/in_electricalconductivity_raw
1612 Contact: linux-iio@vger.kernel.org
1614 Raw (unscaled no offset etc.) electric conductivity reading that
1615 can be processed to siemens per meter.
1617 What: /sys/bus/iio/devices/iio:deviceX/in_countY_raw
1619 Contact: linux-iio@vger.kernel.org
1621 Raw counter device counts from channel Y. For quadrature
1622 counters, multiplication by an available [Y]_scale results in
1623 the counts of a single quadrature signal phase from channel Y.
1625 What: /sys/bus/iio/devices/iio:deviceX/in_indexY_raw
1627 Contact: linux-iio@vger.kernel.org
1629 Raw counter device index value from channel Y. This attribute
1630 provides an absolute positional reference (e.g. a pulse once per
1631 revolution) which may be used to home positional systems as
1634 What: /sys/bus/iio/devices/iio:deviceX/in_count_count_direction_available
1636 Contact: linux-iio@vger.kernel.org
1638 A list of possible counting directions which are:
1639 - "up" : counter device is increasing.
1640 - "down": counter device is decreasing.
1642 What: /sys/bus/iio/devices/iio:deviceX/in_countY_count_direction
1644 Contact: linux-iio@vger.kernel.org
1646 Raw counter device counters direction for channel Y.
git.samba.org / sfrench / cifs-2.6.git / blob