Hi mino simpson,
Thanks for your reply.
I'd like to indicate the testing process I did.
1. Assure the configured Device is LPC1788

2. Change the value of UART_TEST_NUM to select the J25 as the Serial port.
#define UART_TEST_NUM 0
3. Debug.


Obviously, the demo works well, I don't encounter the phenomenon you mentioned.
Have a great day,
TIC
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