电容感应按键，（TWO KEY）检测程序，串口通信和CRC校验。-Capacitive sensing buttons, (TWO KEY) testing procedures, serial communications, and CRC check.

基于信号检测的源代码，通过遥控按键，然后再板子上接受信号，并进行相应操作-Based on signal detection of the source code, by remote control button, and then receiving the signal on the board, and the corresponding operation