Why 51 single-chip serial communication, serial port assistant always print 00 0 x00 and has always been no matter what the input number, and the initialization configuration, baud rate Settings are no problem

CodePudding user response:

Oscilloscope for test see if there are 51 MCU TX output waveform changes, then test serial assistant side whether the RX or TX end of waveform changes

CodePudding user response:

Feeling is the hardware connection problem, if you try grounding, RX and Tx if the and so on

CodePudding user response:

reference 1st floor hufuju_com response:

oscilloscope for test see if there are 51 MCU TX output waveform changes, then test whether serial assistant RX or TX end on this side of the waveform changes

Is I didn't notice the timer 1 baud rate can only be largest by 19200