https://devzone.nordicsemi.com/f/nordic-q-a/113668/log-uart-set-about-sdk11#define RX_PIN_NUMBER 1 #define TX_PIN_NUMBER 2 #define CTS_PIN_NUMBER 0XFF #define RTS_PIN_NUMBER 0XFF #define HWFC 0 #ifndef NRF_LOG_USES_RTT #define NRF_LOG_USES_RTT 0 #endif #ifndef NRF_LOG_USES_UART #define NRF_LOG_USES_UART 1 #endif #ifndefen-USTelligent Community 13Tue, 06 Aug 2024 03:03:23 GMThttps://devzone.nordicsemi.com/thread/497064?ContentTypeID=1Tue, 06 Aug 2024 03:03:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6899caa9-776b-403f-92fd-8e714dc1ddb6qingming2333<p>The problem has been solved and proved to be the problem of serial port software</p><div style="clear:both;"></div>