sysfs-bus-iio-scd30 1.1 KB

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  1. What: /sys/bus/iio/devices/iio:deviceX/calibration_auto_enable
  2. Date: June 2020
  3. KernelVersion: 5.8
  4. Contact: linux-iio@vger.kernel.org
  5. Description:
  6. Contaminants build-up in the measurement chamber or optical
  7. elements deterioration leads to sensor drift.
  8. One can compensate for sensor drift by using automatic self
  9. calibration procedure (asc).
  10. Writing 1 or 0 to this attribute will respectively activate or
  11. deactivate asc.
  12. Upon reading current asc status is returned.
  13. What: /sys/bus/iio/devices/iio:deviceX/calibration_forced_value
  14. Date: June 2020
  15. KernelVersion: 5.8
  16. Contact: linux-iio@vger.kernel.org
  17. Description:
  18. Contaminants build-up in the measurement chamber or optical
  19. elements deterioration leads to sensor drift.
  20. One can compensate for sensor drift by using forced
  21. recalibration (frc). This is useful in case there's known
  22. co2 reference available nearby the sensor.
  23. Picking value from the range [400 1 2000] and writing it to the
  24. sensor will set frc.
  25. Upon reading current frc value is returned. Note that after
  26. power cycling default value (i.e 400) is returned even though
  27. internally sensor had recalibrated itself.