1:定时器控制小键盘的亮灭,发送数据0x57,0xAB,0x12,0x00,0x00,0x00,0x00,0x01,0x07,0xAC,0x20和0x57,0xAB,0x12,0x00,0x00,0x00,0x00,0x00,0x07,0xAC,0x20

2:按下键盘任意按键,如数字“1”,串口收到两次“1”按下的命令,偶尔也是收到一次


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3:数据见上图

如果不开启小键盘亮灭,键盘按下正常,请问应该如何处理?