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iio: chemical: sps30: add support for self cleaning

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Self cleaning is especially useful in cases where sensor undergoes
frequent power on/off cycles. In such scenarios it is recommended to
turn self cleaning at least once per week in order to maintain reliable
measurements.

Self cleaning is activated by writing 1 to a dedicated attribute.
Internal fan accelerates to its maximum speed and keeps spinning
for about 10 seconds blowing out accumulated dust.

Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Tested-by: Andreas Brauchli <andreas.brauchli@sensirion.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Tomasz Duszynski
2018-12-18 21:28:09 +01:00
committed by Jonathan Cameron
parent 6a4b8937a3
commit c546d49656
2 changed files with 42 additions and 1 deletions
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Documentation/ABI/testing/sysfs-bus-iio-sps30 Normal file
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What: /sys/bus/iio/devices/iio:deviceX/start_cleaning
Date: December 2018
KernelVersion: 4.22
Contact: linux-iio@vger.kernel.org
Description:
Writing 1 starts sensor self cleaning. Internal fan accelerates
to its maximum speed and keeps spinning for about 10 seconds in
order to blow out accumulated dust.