ic2.c

该程序用来测试89C51与IDE硬盘的接口

//  LCD  16X2  5x7
#include <INTRINS.H>
#include <AT89x51.H>
#include <delay.h>
#define uchar unsigned char
#define uint unsigned int
//*************************************************
uchar idata system[]={0x20,0x49,0x43,0x20,0x43,0x41,0x52,0x44,
                      0x20,0x53,0x59,0x53,0x54,0x45,0x4d,0x00};
uchar idata beyond[]={0x20,0x42,0x45,0x59,0x4f,0x4e,0x44,0x20,
                      0x20,0x20,0x55,0x45,0x53,0x54,0x43,0x00};
uchar idata id[]={0x20,0x20,0x20,0x20,0x07,0x07,0x07,0x07,
                  0x07,0x07,0x07,0x07,0x20,0x20,0x20,0x00};
uchar idata money[]={0x20,0x20,0x07,0x07,0x20,0x20,0x20,0x5c,
                     0x3a,0x07,0x07,0x2e,0x07,0x07,0x20,0x00};
uchar idata byte[]={0x42,0x42,0x42,0x42,0x42,0x42,0x42,0x42};
uchar idata pass[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};    
//*************************************************
sbit RST=P1^3;  sbit SCL=P1^2;  sbit SDA=P1^4;  sbit IC=P1^1;
sbit en=P1^7;   sbit rs=P1^5;   sbit rw=P1^6;
sbit a0=ACC^0;	sbit a1=ACC^1;	sbit a2=ACC^2;	sbit a3=ACC^3;
sbit a4=ACC^4;	sbit a5=ACC^5;	sbit a6=ACC^6;	sbit a7=ACC^7;
//*************************************************

//*************************************************
void wait(void){	en=0;	rs=0;	rw=1;	
	do {en=0;en=1;_nop_();ACC=P0;en=0;} 	while(a7==1);	}
//*************************************************
void command(uchar a){	
	en=0;rs=0;rw=0;en=1;P0=a;_nop_();en=0;wait();}
//*************************************************

void reset(void){	
	en=0;rs=0;rw=0;en=1;P0=0x38;_nop_();en=0;delay(0x09);
	en=0;rs=0;rw=0;en=1;P0=0x38;_nop_();en=0;delay(0x06);command(0x38);}
//*************************************************
void lcdstart(void){
	reset();	
	command(0x38);
	command(0x06);	
	command(0x0c);
	command(0x01);}
//*************************************************
void display(s)		uchar idata *s;	
	{uchar i=0;while (s[i]!=0x00){en=0;rs=1;rw=0;
	en=1;P0=s[i];en=0;wait();i++;_nop_();}	}
//*************************************************



//*************************************************
main(){
	lcdstart();	while(1){
	command(0x80);display(system); 	
	command(0xc0);display(beyond); 
	delay(0xff);

  	command(0x80);display(id); 	
	command(0xc0);display(money); 
	delay(0xff);

	
	}
		}