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迷官小车程序

#ifndef _LCD1602_H_
#define _LCD1602_H_



//sbit RS=P2^5;	    //寄存器选择信号 H:数据寄存器  	L:指令寄存器
//sbit RW=P2^6;		//读写信号   H：读   L：写
//sbit EN=P2^7;		//片选信号   下降沿触发

#define data_1602 P0

uchar code table_num[]="0123456789abcdefg";
//
sbit rs=P1^2;	 
sbit rw=P1^1;
sbit e=P1^0;

void delay_uint(uint q)
{
	while(q--);
}


void write_com(uchar com)
{
	e=0;
	rs=0;
	rw=0;
	P0=com;
	delay_uint(3);
	e=1;
	delay_uint(25);
	e=0;
}

void write_data(uchar dat)
{
	e=0;
	rs=1;
	rw=0;
	P0=dat;
	delay_uint(3);
	e=1;
	delay_uint(25);
	e=0;	
}

void write_sfm(uchar hang,uchar add,uchar date)
{
	uchar shi,ge;
	if(hang==1)   
		write_com(0x80+add);
	else
		write_com(0x80+0x40+add);
	shi=date%100/10;
	ge=date%10;		  
	write_data(0x30+date%1000/100);
	write_data(0x30+shi);
	write_data(0x30+ge);	
}

void write_sfm2(uchar hang,uchar add,uint date)
{
	uchar shi,ge;
	if(hang==1)   
		write_com(0x80+add);
	else
		write_com(0x80+0x40+add);
	shi=date%100/10;
	ge=date%10;		  
	write_data(0x30+shi);
	write_data(0x30+ge);	
}

void write_sfm1(uchar hang,uchar add,uchar date)
{
	uchar shi,ge;
	if(hang==1)   
		write_com(0x80+add);
	else
		write_com(0x80+0x40+add);
	shi=date%100/10;
	ge=date%10;		  
//	write_data(0x30+shi);
	write_data(0x30+ge);	
}

void write_sfm3(uchar hang,uchar add,uint date)
{
	uchar bai,shi,ge;
	if(hang==1)   
		write_com(0x80+add);
	else
		write_com(0x80+0x40+add);
	bai=date/100%10;
	shi=date/10%10;
	ge=date%10;
	write_data(0x30+bai);		  
	write_data(0x30+shi);
	write_data(0x30+ge);	
}

void write_string(uchar hang,uchar add,uchar *p)
{
	if(hang==1)   
		write_com(0x80+add);
	else
		write_com(0x80+0x40+add);
		while(1)
		{
			if(*p == '\0')  break;
			write_data(*p);
			p++;
		}	
}

void clear_1602()
{
	write_string(1,0,"                ");
	write_string(2,0,"                ");
}

void init_1602()
{
	write_com(0x38);
	write_com(0x0c);
	write_com(0x06);
	write_string(1,0,"    migong      ");
	write_string(2,0,"                ");
}

#endif