| .. _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 |
