精简的key扫描程序 unsigned char Trg;unsigned char Cont;void KeyRead( void ){ unsigned char ReadData = PINB^0xff; // 1 Trg = ReadData & (ReadData ^ Cont); // 2 Cont = ReadData; // 3}固定是时间比如10ms-50ms扫描一次, 前... 2023-06-13 key扫描程序程序设计模拟电子技术模电文章软件开发
