液晶1602.c

自己做的单片机Proteus仿真实例

#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
uchar code table[]="hello everyone!";
uchar code table1[]="welcome to here!";
sbit lcdrs=P2^0;
sbit lcdrw=P2^1;
sbit lcden=P2^2;
uchar num;
void delay(uint z)
{
     uint x,y;
	 for(x=z;x>0;x--)  
	   for(y=110;y>0;y--);
}
void write_com(uchar com)
{
     lcdrs=0;
	 P0=com;
	 delay(5);
	 lcden=1;
	 /*_nop_();
	 _nop_();
	 _nop_();
	 //delay(5);*/
	 lcden=0;
}
void write_data(uchar date)
{
     lcdrs=1;
	 P0=date;
	 delay(5);
	 lcden=1;
	 /*_nop_();
	 _nop_();
	 _nop_();
	 //delay(5);//*/
	 lcden=0;
}
void init()
{
     lcdrw=0;
     write_com(0x38);
	 write_com(0x0c);
	 write_com(0x06);
     write_com(0x01); 
}
void main()
{
     init();
	 
	     write_com(0x80);
	     for(num=0;num<15;num++) 
		 {
	         write_data(table[num]);
		     delay(5);
		 }
	    write_com(0x80+0x40);
	   for(num=0;num<16;num++) 
	   {
	         write_data(table1[num]);
		     delay(5);
	   }
		 write_com(0x80+0x18);
	     for(num=0;num<15;num++) 
		 {
	         write_data(table[num]);
		     delay(5);
		 }
	    write_com(0x80+0x58);
	   for(num=0;num<16;num++) 
	   {
	         write_data(table1[num]);
		     delay(5);
	   }
	   while(1)
	   {
	       for(num=0;num<40;num++) 
	      {
	          write_com(0x1c);
		      delay(200);
	      }
       }
}