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→40pin UART test
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<li>Take the test of '''UART3''' as an example below, select the '''/dev/ttyS3''' node in the selection box, enter the baud rate you want to set in the edit box, and then click the '''OPEN''' button to open the '''/dev/ttyS3''' node. After opening successfully, click the '''OPEN ''' button becomes unselectable, and the '''CLOSE''' button and '''SEND''' button become selectable</li>
[[File:plus5-img662.png]]