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A serial port communication

Time:09-24

How to use the serial port instead of the matrix keyboard control digital tube suspended?

CodePudding user response:

Serial port receives notice suspend instruction, digital tube suspended,

CodePudding user response:

This is used to open automatic-shift will not use the manual? Directly on the keyboard input of gpio interrupt or read regularly judgment level, triggered, will give a signal or status word, continue for a period of time trigger, began to control external other gpio.

CodePudding user response:

To do a serial port communication well first, and then parse a serial port protocol, after parsing the pause command to stop digital tube
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