1.建立虛擬串口 COM1 --> COM2, COM2 --> COM1。spa
2.Keil uVision4調試模式下輸入command命令。綁定COM1口,模擬STM32。調試
命令1:MODE COM1 9600,0,8,1blog
命令2:(多串口,如STM32)ASSIGN COM1 <S1IN>S1OUT io
(單串口,如51) ASSIGN COM1 <SIN>SOUTcommand
3.打開串口調試助手的COM2,模擬上位機。im
附:USART1窗口d3