9.3. DMAV2 Circularly Receives Uart Data

9.3.1. Overview

  • DMAV2 has added circularly transfer function, This example project shows the use of circularly transfer to receive UART DATA.

  • Starting from DMAV2, there is no need to use two chain transfers to achieve DMA circularly transfer.

9.3.2. Board Setting

  • Use the serial port debugging assistant to send and receive data

  • The serial port is set to 115200bps, 1 stop bit, no parity bit

9.3.3. Running the example

  • Use the serial port debugging assistant to send data, and the development board will send back the received data, as shown in the following example

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