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6.37. UART_DMA receive variable length data

6.37.1. Overview

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In this example project, UART receives variable length data via DMA(data size less than defined BUFFER_SIZE in program).

6.37.2. Port Settings

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

6.37.3. Board Setting

• connect uart transmitter tx pin to uart rx pin on baord, connect GND pin between uart transmitter and baord

• connect uart rx pin to trgmux input IO

6.37.4. Running the example

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When the project runs correctly, the serial port terminal will output the following information:

> uart receive xxx bytes, the received data are:!

the received data will be seen like:

0 1 2 3 4 5 6 7 8 9
0 1 2 3 4 5 6 7 8 9
0 1 2 3 4 5 6 7 8 9
0 1 2 3 4 5 6 7 8 9