Serial monitor cannot be opened at the same time when uploading code
When programming, if the ME3616 Board is turned on, just press the RESET button on the front of the board to download it. If you don't have to turn it on, you need to press the power button (PWRKEY).
ME3616\WelinkOpen_RTOS_SDK\OC_ME3616G1AV0.0B07\firmware\flash_download.cfg
Flash_download.cfg only needs to be uploaded the first time it is used. You only need to upload your own project code in the future.