In principle but we also came close to understand ah can have any man told ah
I want to change the above figures sent to the serial debugging assistants on
Thank you very much

CodePudding user response:

Forgot some knowledge of the serial port, you can go to see the serial port communication knowledge, set up a serial port interrupt, when pressed, will enter the interrupt, then put the matrix keyboard keys you press the corresponding character (note that must be send characters, Numbers, quotes, this is easy to forget), enter the interrupt, then data to send, to the serial port to read,
Can also add an independent keyboard, plus a 24 our fleet, a began to read the data save, when press the independent keyboard, a flag bit in the boot, and then enter the interrupt, sign a control program to open, send the string to the serial port