35 lines
1023 B
ReStructuredText
35 lines
1023 B
ReStructuredText
.. zephyr:code-sample:: uart-stm32-single-wire
|
|
:name: STM32 single-wire UART
|
|
:relevant-api: uart_interface
|
|
|
|
Use single-wire/half-duplex UART functionality of STM32 devices.
|
|
|
|
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/boards/stm32/uart/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
|