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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2016-01-21 01:07:31 +0900 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-04-12 17:06:24 -0400 |
| commit | 983cabe4e2b071090fe22f1c4d07a64f2a263ef2 (patch) | |
| tree | 4c70b8c57fc7ebcbf5aad1ad47d836b96575a372 /kernel | |
| parent | c0472847dcb2a89afea3b4a9bbac68bd66706125 (diff) | |
iio: pressure: mpl115: fix temperature offset sign
[ Upstream commit 431386e783a3a6c8b7707bee32d18c353b8688b2 ]
According to the datasheet, the resolusion of temperature sensor is
-5.35 counts/C. Temperature ADC is 472 counts at 25C.
(https://www.sparkfun.com/datasheets/Sensors/Pressure/MPL115A1.pdf
NOTE: This is older revision, but this information is removed from the
latest datasheet from nxp somehow)
Temp [C] = (Tadc - 472) / -5.35 + 25
= (Tadc - 605.750000) * -0.186915888
So the correct offset is -605.750000.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions