zephyr

History

Francois Ramu d75292feea samples: sensor: vbat of the stm32u5x channel 14 on ADC4 Enable the channel14 of the ADC4 of the stm32U5x to measure the vbat voltage with internal on channel 14 of the ADC4 on the nucleo board or disco kit. Signed-off-by: Francois Ramu <francois.ramu@st.com>		2022-12-27 15:33:06 +01:00
..
boards	samples: sensor: vbat of the stm32u5x channel 14 on ADC4	2022-12-27 15:33:06 +01:00
src	includes: prefer <zephyr/kernel.h> over <zephyr/zephyr.h>	2022-09-05 16:31:47 +02:00
CMakeLists.txt
prj.conf	sensors: Remove unnecessary Kconfig setting of sensors	2022-07-25 15:18:56 +02:00
README.rst	samples: sensor: doc: fix a code block formatting issue	2022-11-22 12:54:44 +09:00
sample.yaml	tests/samples: use integration_plaforms in more tests/samples	2022-11-29 16:03:23 +01:00

README.rst

.. _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