现实下列报警,但我的每一步都是按说明走的,而且确定显示的为XDS110 Class Application/User UART的串口号
[ERROR] Cortex_R4_0: Serial port COM3 specified does not exist, is already open, or permission is denied!!
[2018/4/6 下午2:09:28] [ERROR] Cortex_R4_0: !! Aborting operation!!
[2018/4/6 下午2:09:28] [ERROR] Cortex_R4_0: Not able to connect to serial port. Recheck COM port selected and/or permissions.