ht1380.h

这是52单片机串口调试程序

sbit	T_CLK	= P3^2;
sbit	T_IO	= P3^3;
sbit	T_RST = P3^5;
sbit	ACC_0	= ACC^0;
sbit	ACC_7	= ACC^7;

void HT1380_Write(BYTE ucDa)
{
	BYTE i;
	ACC = ucDa;
	for(i=8; i>0; i--){
		T_IO = ACC_0;
		T_CLK = 1;
		T_CLK = 0;
		ACC = ACC >> 1;
	}
}

BYTE HT1380_Read(void)
{
	BYTE i;
	for(i=8; i>0; i--){
		ACC = ACC >>1;
		ACC_7 = T_IO;
		T_CLK = 1;
		T_CLK = 0;
	}
	return(ACC);
}

void HT1380_WriteByte(BYTE ucAddr, BYTE ucDa)
{
	T_RST = 0;
	T_CLK = 0;
	T_RST = 1;
	HT1380_Write(ucAddr);
	HT1380_Write(ucDa);
	T_CLK = 1;
	T_RST = 0;
}

// 时间格式(BCD): 秒 分 时 日 月 星期 年
void HT1380_WriteTime(void)
{
	BYTE i;
	HT1380_WriteByte(0x8e, 0x00);			// Write Enable
	T_RST = 0;
	T_CLK = 0;
	T_RST = 1;
	HT1380_Write(0xbe);						// Clock Burst Write
	Time_buf[7]=0;
	for(i=0; i<8; i++){
		HT1380_Write(Time_buf[i]);
	}
	T_CLK = 1;
	T_RST = 0;
	HT1380_WriteByte(0x8e, 0x80);			// Write Disable
}

void HT1380_ReadTime(void)
{
	BYTE i;
	T_RST = 0;
	T_CLK = 0;
	T_RST = 1;
	HT1380_Write(0xbf);						// Clock Burst Read
	for(i=0; i<8; i++){
		Time_buf[i]=HT1380_Read();
	}
	T_CLK = 1;
	T_RST = 0;
	if(Time_buf[0]&0x80){	// Error
		Time_buf[0]&=0x7F;
		Time_buf[7]=0;
		HT1380_WriteTime();
	}
}