lcd.c

16乘2的液晶显示屏演示程序

#include <reg51.h>
#include "LCD1602.h"
#include<stdio.h>
sbit P10=0x90;
sbit P11=0x91;
sbit P12=0x92;
sbit P13=0x93;
sbit P14=0x94;
sbit P15=0x95;
sbit P16=0x96;
sbit P17=0x97;
unsigned char disp_data[]={"0""1""2""3""4""5""6""7""8""9""10""11""12""13""14""15"};    

void IntToStr(unsigned int Count, unsigned char *str, unsigned char n) 
{
	unsigned char a[5]; char i, j;                                 	
	a[0]=(Count/10000)%10;         //取得整数值到数组         	
	a[1]=(Count/1000)%10;                                     	
	a[2]=(Count/100)%10;                                      	
	a[3]=(Count/10)%10;                                       	
	a[4]=(Count/1)%10;                                        	
                                                      
	for(i=0; i<5; i++)         //转成ASCII码              	
		a[i]=a[i]+'0';                                    	
	for(i=0; a[i]=='0' && i<=3; i++);                     	
	for(j=5-n; j<i; j++)       //填充空格                 	
		{ *str=' ';  str++; }                             	
	for(; i<5; i++)                                       	
		{ *str=a[i]; str++; }  //加入有效的数字           	
	*str='\0'; 
} 

void Delay1ms(unsigned int count)
{
	unsigned int i,j;
	for(i=0;i<count;i++)
	for(j=0;j<120;j++);
}

main()
{
	unsigned int Count;
    SCON=0x52;
    TMOD=0x20;
    TCON=0x69;
    TH1=0xf3;	
	LCD_Initial();
	GotoXY(0,0);
	Print("The 1602LCD Test");
	GotoXY(0,1);
	Print("GO:       by JJJ");

	while(1)
	{
		{
		if(P14==0 && P13==0) Count=0; 
		if(P14==0 && P12==0) Count=1; 
		if(P14==0 && P11==0) Count=2; 
		if(P14==0 && P10==0) Count=3; 

		if(P15==0 && P13==0) Count=4; 
		if(P15==0 && P12==0) Count=5;
		if(P15==0 && P11==0) Count=6; 
		if(P15==0 && P10==0) Count=7; 

		if(P16==0 && P13==0) Count=8; 
		if(P16==0 && P12==0) Count=9; 
		if(P16==0 && P11==0) Count=10; 
		if(P16==0 && P10==0) Count=11; 

		if(P17==0 && P13==0) Count=12; 
		if(P17==0 && P12==0) Count=13; 
		if(P17==0 && P11==0) Count=14; 
		if(P17==0 && P10==0) Count=15; 

		}
		IntToStr(Count,&disp_data[16],5);
		GotoXY(3,1);
		Print(&disp_data[16]);
		Delay1ms(100);
	}
}