- Added support for TMP117 in existing driver for TMP116
The Texas Instruments TMP117 is a higher precision upgrade
from TMP116. It shares most functionality, but has a
differing device ID.
This patch will run with the hardware IDs of both devices.
- Fixed an int promote issue in tmp116_channel_get
Negative temperature values in drv_data->sample were not
processed correctly.
The error occured during integer promotion from u16_t to s32_t
in this code line:
tmp = (s32_t)drv_data->sample * TMP116_RESOLUTION;
By first promoting to s16_t, the correct result is obtained:
tmp = (s16_t)drv_data->sample * (s32_t)TMP116_RESOLUTION;
- Made temperature resolution compatible to sensor API
The fractional part of the temperature was returned as a
multiple of 10^-7 deg.Celsius.
This differs from the resolution sugegsted by the sensor API,
which is 10^-6.
The driver is now returning temperature readings with
a resolution of 10^-6 deg. Celsius.
- The changed driver was tested using following hardware:
TMP117 attached to disco_l475_iot1 via i2c1
Signed-off-by: Hans Wilmers <hans@wilmers.no>
