1. Find the path software/TuyaOS/vendor/T3/t3_os/tuya'app/config/bk7236/config
2. Configure the macro CONFIG-URT-PRINTPORT (default 1), for example: set to UART0, then configure CONFIG-URT-PRINTPORT 0 (note that UART0 is an authorized serial port and is not recommended as a log serial port, otherwise the module burning authorization will fail to enter production testing)