.. _sample_uart_stm32_single_wire:
STM32 Single Wire UART
######################
Overview
********
A simple application demonstrating how to use the single wire / half-duplex UART
functionality of STM32. Without adaptions this example runs on STM32F3 discovery
board. You need to establish a physical connection between pins PA2 (USART2_TX) and
PC10 (UART4_TX).
Add a `single_wire_uart_loopback` fixture to your board in the hardware map to allow
twister to verify this sample's output automatically.
Building and Running
********************
Build and flash as follows, replacing ``stm32f3_disco`` with your board:
.. zephyr-app-commands::
:zephyr-app: samples/drivers/uart/stm32/single_wire
:board: stm32f3_disco
:goals: build flash
:compact:
After flashing the console output should not show any failure reports,
but the following message repeated every 2s:
.. code-block:: none
Received c
a202341958