1602显示带键盘.txt

lcd1602显示驱动

#include <at89x51.h>
#include <key.h>
#include <lcd1602.h>
bit flag;
float q;
int  dingshi=0x01;
int x,y,z;
bit b=0;
float i,j,m,k;
float H,KK,N;
void  dingshiin(void);

main()
{
    BEGAIN:	
	P1 = 0xff;
	LCD_Initial();	
	P2=0XF0;
	GotoXY(0,0);
   	Print("Input E :      ");
	GotoXY(0,1);
   	Print("               ");
	m=0;
	k=0;
	i=0;
	q=0;
    while(1)
	 {		   
	    while(1)
	    {
		  m=keynum();
		  if(m>=0&&m<=9||m==15||m==14||m==12)
		  {
		    z=m;
			Delay1ms(150);
		    break;
		  }
	   	}
	
		  if(m>=0&&m<=9)
		   	{
			 i++;
			}
		  if(z==12)
		    {
			  goto  BEGAIN;
			}
		  if(z==15)
		  { 
		   q=k;
		   GotoXY(0,1);
		   Print("            ");
		   GotoXY(0,1);
		   Print("OK!!");
		   Delay1ms(1000); 
		   break;
		  }
	      
		   if(i==1)
		     {k=z;}
		   if(i==2)
		    {
			 k=k*10+z;
			}
		
		   if(i==3)
		    {
			  k=k*10+z;
			 }
		   if(i>7)
		   {
		      GotoXY(0,1);
		      Print("     ERROR!!      ");
			  Delay1ms(500);
		      goto  BEGAIN;
		   }
            IntToStr(k,&TempBuffer[0],0);
			GotoXY(0,1);
			Print(&TempBuffer[0]);
	        P2=0XF0;
			Delay1ms(150);				
	  	}	
		LCD_Initial();
		Delay1ms(150);	
		Print("Waiting.........");
		Delay1ms(1000);

		if(z==14)
		    {
			  goto  BEGAIN;
			} 
		GotoXY(0,0);

		Delay1ms(500);
		GotoXY(0,0);
		Print("Used E:         ");
	    y=0;
    	IntToStr(y,&TempBuffer[0],0);
   		GotoXY(12,0);
  		Print(&TempBuffer[0]);
   	 	GotoXY(0,1);
		Print("Remain E:       ");
		IntToStr(k,&TempBuffer[0],0);
		GotoXY(11,1);
		Print(&TempBuffer[0]);
		P1_1 = 0;
		dingshiin();
		 while(1)
	
		 {
		 	if(k <= 10)
			{
				P1_0 = 0;
			}
			else
				P1_0 = 1;
		 }  
}


void  dingshiin(void)
{
	 ET1=0;
	 TMOD=0x15;	//定时器0为计数器方式，定时器1定时方式1
	 TH0=0X00;
	 TL0=0X00;
	 TR0=1;//启动定时器0
	 TH1=0x4c;//定时器1初值设定
	 TL1=0x00;
	 ET1=1;										   
	 TR1=1;
	 EA=1;
}

void timer_ISP(void) interrupt 3
{ 
	  dingshi++;
	  TH1=0x4c;
	  TL1=0X03;														   
	  b=0;
	  if(dingshi==80)
	  {
	     dingshi=0;
		 y++;
		 k--;
		 if(k <= 0)
		 {
		    P1_1 = 1;
			TH0=0x00;
	    	TL0=0x00;
	    	TR0=1;
		 	ET1=0;
			EA=0;
		 }
		 GotoXY(0,0);
		Print("Used E:         ");
	   	IntToStr(y,&TempBuffer[0],0);
	   	GotoXY(12,0);
	  	Print(&TempBuffer[0]);
	   	GotoXY(0,1);
		Print("Remain E:       ");
		IntToStr(k,&TempBuffer[0],0);
		GotoXY(11,1);
		Print(&TempBuffer[0]);	
	  }
}