# Use DMA to receive and send UART data

## Overview

In this example project, UART receives/sends data via DMA.

## Port Settings

- Serial port baud rate is set to ``115200bps``, with ``one stop bit`` and ``no parity bit``

## Note

- The input string length should not exceed TEST_BUFF_SIZE defined in the program every time

## Running the example

When the project runs correctly, manually input the char through the serial port, such as '1234567887654321', and the serial port terminal will receive the following information:
```console
UART DMA example
UART will send back received characters, echo every 16 bytes
1234567887654321
```