lcd drive.c

12位ADmax1241和1602液晶显示的一个经典的例子,文件里包括proteus文件和keil文件等等文件

//proteus仿真论坛：http://proteus.5d6d.com/
#include <reg51.h>
#include "LCD1602.h"
#define	uchar unsigned char
#define uint unsigned int
#define High 1
#define Low	0
int t;
sbit cs=P1^7;
sbit sclk=P1^6;
sbit dout=P1^5;
sbit P30=P3^0;
sbit P31=P3^1;
sbit P32=P3^2;
sbit P33=P3^3;
sbit P34=P3^4;
sbit P35=P3^5;
sbit P36=P3^6;
sbit P37=P3^7;
unsigned char a[5];
unsigned char b[5];
unsigned char TempBuffer[10];

/***************************************
    max1241读转换结果
****************************************/
uint read_max1241()
	 {
	  uint voltage_temp=0;
	  uchar ucloop=12;
	  cs=High;
	  //dout=low;
	  sclk=Low;
	  cs=Low;
      while(dout==0);//EOC信号为高表示转换结束
	  sclk=High;
	  sclk=Low;
      while(ucloop--)
	   {
		sclk=High;//上升沿数据稳定并读出
		voltage_temp<<=1;
	    if(dout==1)
	    voltage_temp+=1;
	    sclk=Low;
		};	 
	  //sclk=low;
	  cs=High;
	  return voltage_temp;
	  }

void IntToStr(unsigned char *str, unsigned char n) 
{
	char i, j;
    t=read_max1241();
	b[0]=(t/10000)%10;         //取得整数值到数组         	
	b[1]=(t/1000)%10;                                     	
	b[2]=(t/100)%10;                                      	
	b[3]=(t/10)%10;                                       	
	b[4]=(t/1)%10;
    for(i=0; i<5; i++)                       	
	a[i]=b[i];
    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()
{   
	LCD_Initial();
	GotoXY(0,0);
	Print("The 1602LCD Test");
	GotoXY(0,1);
	Print("Input NO.:       ");

	while(1)
	{ 
		IntToStr(&TempBuffer[0],5);
		GotoXY(11,1);
		Print(&TempBuffer[0]);
		Delay1ms(100);
	}
}