IIC_SDA=(txd&0x80)>>7; txd<<=1; delay_us(2); //对TEA5767这三个延时都是必须的 IIC_SCL=1; delay_us(2); IIC_SCL=0; delay_us(2); } } //读1个字节,ack=1时,发送ACK,ack=0,发送nACK u8 IIC_Read_Byte(unsigned char ack) { unsigned char i,receive=0; SDA_IN();//SDA设置为...