Change the STM32 Temperature Sensor bindings to accept the average slope
value in string form instead of integer. With this change, it is possible
to use the raw decimal value found in each MCU's datasheet instead of
needing to scale it (differently depending on series!). This also allows
regrouping the property in a single file to reduce duplication.
Also update all DTSI files affected by this change and the dietemp driver
to accept the property's new format.
Signed-off-by: Mathieu Choplain <mathieu.choplain@st.com>
Update all the conversion code in the STM32 dietemp sensor driver to be
more readable and match the Reference Manuals. Additionally, comment all
the code to make it easy to understand.
Signed-off-by: Mathieu Choplain <mathieu.choplain@st.com>
Move the reading of calibration data from manufacturing flash to a
dedicated function. This makes introduction of new STM32 series easier.
Additionally, use the sys_read16 primitive to read data instead of
manipulating and dereferencing raw manufacturing flash pointers.
Signed-off-by: Mathieu Choplain <mathieu.choplain@st.com>
Rename the fields of the STM32 dietemp sensor driver data structure to
match the names in Reference Manual more closely, and add documentation
comments to all of them.
Signed-off-by: Mathieu Choplain <mathieu.choplain@st.com>
Factor out the ADC-sample-to-temperature conversion logic from the sensor
subsystem API implementation, and move it to a dedicated function.
This makes the driver more readable.
Signed-off-by: Mathieu Choplain <mathieu.choplain@st.com>
Moves the temperature sensor channel enable and selection to separate
functions. This improves the driver's readability and makes introduction
of new STM32 series easier.
Signed-off-by: Mathieu Choplain <mathieu.choplain@st.com>
This commit modifies the STM32 internal temperature sensor driver
to handle erroneous usage more gracefully. More precisely:
- driver no longer builds if no ADC node is enabled
- fail builds with an explicit error message when the sensor
is enabled but the corresponding ADC is not. This can only
happen on STM32 series with more than one ADC (e.g., H7).
Signed-off-by: Mathieu Choplain <mathieu.choplain@st.com>
The STM32 temperature, battery and voltage reference sensors needs to
write the ADC common registers to enable the corresponding ADC features.
For that we need to ensure that the ADC is not suspended by using the
pm_device_runtime_get/put methods.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
The temperature being computed using a float variable, use
sensor_value_from_float() instead of sensor_value_from_double(). This
saves some flash.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
When using one of the internal channels (die_temp, vbat, vref) the
channels are enabled in the individual drivers and disabled again
whenever an adc conversion is complete.
This creates a race condition if the ADC is used from multiple threads.
This commit moves the disabling of the channels to the individual
drivers.
Signed-off-by: Brian Juel Folkmann <bju@trackunit.com>
On some STM32 families (such as F4), temperature and Vbat sensor share the
same ADC channel, which can lead to conflict when reading them, and wrong
measurement can follow.
To alleviate this problem, this commit moves the setting of the common
path internal channel to the sensor drivers themselves instead of doing
it in the ADC driver.
The teardown is still done in the ADC driver, systematically, instead of
channel by channel (which has the same result).
By moving this logic in the sensor drivers, the properties temp-channel,
vbat-channel and vref-channel becomes useless and are thus removed.
Signed-off-by: Guillaume Gautier <guillaume.gautier-ext@st.com>
Reading the temperature calibration data requires disabling the icache
of the stm32h5x mcu.
Else a bus fault error occurs reading Address: 0x8fff8014-0x8fff818
Enable afterwards.
Signed-off-by: Brian Juel Folkmann <bju@trackunit.com>
Add support for negative temperature coefficient for single calibration
chips in the STM32 temperature driver.
That feature is necessary for STM32F0x0.
Signed-off-by: Guillaume Gautier <guillaume.gautier-ext@st.com>
Add new compatible to separate production calibrated sensors
with single and dual calibration temperatures. Also update
stm32_temp driver to support single calibration sensors.
Signed-off-by: Benjamin Björnsson <benjamin.bjornsson@gmail.com>
Refactors all sensor drivers to use SENSOR_DEVICE_DT_INST_DEFINE, which
is a sensor-specific variant of DEVICE_DT_INST_DEFINE that provides a
common place to instantiate additional data structures for the future
sensor subsystem and/or sensor driver stats.
This approach was inspired by I2C_DEVICE_DT_INST_DEFINE to streamline
adding I2C stats support across all I2C drivers.
Signed-off-by: Maureen Helm <maureen.helm@intel.com>
According to the formulas found in the reference manuals of the SoC
families using the "st,stm32-temp-cal" version of the temperature sensor
(i.e. G0, G4, H7, L0, L1, L4, L5, U5, WB, WL), the temperature is
computed with the following formula:
T = ((TS_CAL2_TEMP - TS_CAL1_TEMP) / (TS_CAL2 - TS_CAL1))
* (TS_DATA - TS_CAL1) + TS_CAL1_TEMP
What is called ts-cal-offset in the stm32_temp driver is therefore the
same value as TS_CAL1_TEMP1. Use it directly instead of defining another
property.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
The stm32_temp driver defines the ts-voltage-mv property to determine
the reference voltage of the ADC in the temperature computation. However
this information is already available in the device tree at the ADC
level (even with the same default value). Use it through the ADC API
instead of duplicating the information.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
In order to bring consistency in-tree, migrate all drivers to the new
prefix <zephyr/...>. Note that the conversion has been scripted, refer
to #45388 for more details.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Currently the driver only setup the ADC to read from the
internal temperature channel on init. However, it is possible
that some other application that uses the ADC can setup the
ADC to read from some other channel and therefore subsequent
stm32_temp_sample_fetch will fail to read the targeted channel.
Signed-off-by: Yong Cong Sin <yongcong.sin@gmail.com>
The ADC should be calibrated on init, there is no requirement
to calibrate ADC again on stm32_temp_init, remove it.
Signed-off-by: Yong Cong Sin <yongcong.sin@gmail.com>
sensor_value_from_double had a early overflow when converting the
fractional part (val2). This occured when input was more then
2147.493647 (inp >= INT32_MAX/1000000.0 + 0.01).
return value -ERANGE as this is what errno is set to by `strtod` and
similar posix functions.
fixes issue #39176
Signed-off-by: Simon Frank <simon.frank@lohmega.com>
This PR adds the different handling of temperature sensor for the
STM32L5 soc. In this soc, there are some calibration settings which
need to be applied for temperature conversion.
Signed-off-by: Wouter Cappelle <wouter.cappelle@crodeon.com>
moving the conversion from adc value to the get function
which will be used for different handling of stm32 temp sensors
Signed-off-by: Wouter Cappelle <wouter.cappelle@crodeon.com>
STM32 internal temperature sensor driver.
This sensor can be used to measure the temperature of the CPU
and its surroundings.
Signed-off-by: Eug Krashtan <eug.krashtan@gmail.com>
Yong Cong Sin
Mathieu Choplain
Aurelien Jarno
Maureen Helm
Brian Juel Folkmann
Guillaume Gautier
Benjamin Björnsson
Maureen Helm
TLIG Dhaou
Gerard Marull-Paretas
Yong Cong Sin
Simon Frank
Wouter Cappelle
Eug Krashtan