iio: hx711: add triggered buffer support

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Add buffer to device data struct and add trigger function

Data format is quite simple:
      voltage - channel 0   32 Bit
      voltage - channel 1   32 Bit
      timestamp             64 Bit

Using both channels at the same time is working quite slow because of
changing the channel which needs a dummy read.

Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Andreas Klinger 2017-12-13 18:10:11 +01:00 • committed by Greg Kroah-Hartman

parent 8bcf024f06

commit d3bf60450d

2 changed files with 100 additions and 23 deletions

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2

drivers/iio/adc/Kconfig

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121

drivers/iio/adc/hx711.c

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