A write to the "ctrl_meas" register can cause the sensor to transition
from sleep to normal mode (which is default Kconfig settings). As per
BME280 datasheet, writes to the "config" register in normal mode may be
ignored. This can lead to use BME280_STANDBY_05MS and BME280_FILTER_OFF
instead of the values set by the application. To fix this, write to the
"config" register before "ctrl_meas" in the sensor init function.
Signed-off-by: Loic Domaigne <tech@domaigne.com>
Calling sensor API functions on devices not in `PM_DEVICE_STATE_ACTIVE`
is a violation of the PM API. Adding manual checks inside of drivers
complicates the drivers and increases ROM footprint for no additional
benefit.
Signed-off-by: Jordan Yates <jordan@embeint.com>
Clamp the returned humidity to a non-negative value. This ensure that
the return value is always within the expected range, even if the
calibration parameters are read out incorrectly or corrupted.
This check is applied in the example Bosch driver for the float
conversion case, so there are situations that warrant it.
Signed-off-by: Jordan Yates <jordan@embeint.com>
This commit introduces a new Sensor Clock API, enabling the retrieval
of cycle counts and conversion to nanoseconds based on the system or
external clock. The API includes:
- `sensor_clock_get_cycles()` to get the current cycle count from the
sensor clock.
- `sensor_clock_cycles_to_ns()` to convert cycles to nanoseconds using
the clock's frequency.
The implementation supports both system clocks and external clocks
defined in the device tree, making the sensor clock integration more
flexible for various sensor use cases.
Signed-off-by: Mark Chen <mark.chen@cienet.com>
Wait until the typical time that the sample would be ready before
starting to poll the status register.
Signed-off-by: Jordan Yates <jordan@embeint.com>
Add a timeout to the `bme280_wait_until_ready` loop to ensure that we
never get stuck in this loop even if the bus enters an error condition.
Signed-off-by: Jordan Yates <jordan@embeint.com>
Inform the executor of a submissions completion with -ENOMEM
if the size of the workq is not big enough.
Signed-off-by: Florian Weber <Florian.Weber@live.de>
Update power management to only start/stop periodic measurements in
`CONFIG_BME280_MODE_NORMAL`, instead of re-initialising the chip
completely.
In `CONFIG_BME280_MODE_FORCED`, there is nothing to do when suspending,
as the sensor is already in its lowest power mode.
Signed-off-by: Jordan Yates <jordan@embeint.com>
Add missing braces to comply with MISRA C:2012 Rule 15.6 and
also following Zephyr's style guideline.
Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
The integer return of sensor_submit should be void as the call is
asynchronous and the response is meant to be delivered using RTIO APIs
signaling that the submission completed with error or success.
Change the function signature to void and fix all uses of the submit
API, fixing some bugs in the process.
Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
