Send characters to the serial debugging tools, the screen is blank, not according to the

CodePudding user response:

1. Check the receiving software parameters and the procedure of serial ports are the same
2. The software to open the serial port, serial port on the serial port number of the
3. Use printf output? Rewrite the fput not
Basic is the few, a serial port to send, it is very simple

CodePudding user response:

Oscilloscope at wave properties and see what went wrong