.. _stm32_vbat_sensor:
STM32 VBat Sensor
#################
Overview
********
This sample reads the Vbat from the STM32 Internal
Sensor and displays the results.
Building and Running
********************
In order to run this sample, make sure to enable ``stm32_vbat`` node in your
board DT file or with a board overlay in the samples/sensor/stm32_temp_sensor/boards :
.. code-block:: dts
stm32_vbat: stm32vbat {
compatible = "st,stm32-vbat";
io-channels = <&adc1 14>;
ratio = <3>;
status = "okay";
};
Enable the corresponding ADC, with the correct vref value (in mV)
.. code-block:: dts
&adc1 {
vref-mv = <3000>;
status = "okay";
};
.. zephyr-app-commands::
:zephyr-app: samples/sensor/stm32_vbat_sensor
:board: nucleo_g071rb
:goals: build
:compact:
Sample Output
=============
.. code-block:: console
Current Vbat voltage: 3.04 V
5d36157c7c