cs17-2.c

主要是一些基本的C61的程序

#include <REG51.H>	
#define uchar unsigned char	
#define uint unsigned int	
uchar code SEG7[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar code ACT[4]={0xfe,0xfd,0xfb,0xf7};
/***********************************************************/
sbit D0=P1^0;
sbit D1=P1^1;
sbit D2=P1^2;
sbit D3=P1^3;
sbit D4=P1^4;
sbit D5=P1^5;
sbit D6=P1^6;
sbit D7=P1^7;
#define ON 0
#define OFF 1
uchar a[2];
uchar cnt;
bit outflag;
/****************************************/
void delay(uint k)			
{							
uint data i,j;				
	for(i=0;i<k;i++)		
	{						
	for(j=0;j<121;j++){;}	
	}					
}						
/**************************************/
void init(void)					
{							
TMOD=0x20;
TH1=0xfd;					
TL1=0xfd;					
SCON=0x50;					
TR1=1;						
ES=1;						
EA=1;							
}		
/****************************************/						
void main(void)			
{	
init();						
    while(1)				
    {						
		P0=SEG7[a[0]];P2=ACT[2];delay(1);
		P0=SEG7[a[1]];P2=ACT[0];delay(1);
		if(outflag==1)
		{	
			switch(a[0])
			{
			case 1:if(a[1]==1)D0=ON;else D0=OFF;break;
			case 2:if(a[1]==1)D1=ON;else D1=OFF;break;
			case 3:if(a[1]==1)D2=ON;else D2=OFF;break;
			case 4:if(a[1]==1)D3=ON;else D3=OFF;break;
			case 5:if(a[1]==1)D4=ON;else D4=OFF;break;
			case 6:if(a[1]==1)D5=ON;else D5=OFF;break;
			case 7:if(a[1]==1)D6=ON;else D6=OFF;break;
			case 8:if(a[1]==1)D7=ON;else D7=OFF;break;
			default:break;
		 	}
		outflag=0;
		}
	}		
}
/******************************************/
void serial_serve(void) interrupt 4
{
uchar temp;
RI=0;
EA=0;
temp=SBUF;
switch(cnt)
	{
	case 0:if(temp=='#')cnt=1;else outflag=0;break;
	case 1:if((temp>0x30)&&(temp<0x39)){a[0]=temp-0x30;cnt=2;}else outflag=0;break;
	case 2:if(temp=='(')cnt=3;else outflag=0;break;
	case 3:if((temp>=0x30)&&(temp<=0x38)){a[1]=temp-0x30;cnt=4;}else outflag=0;break;
	case 4:if(temp==')'){cnt=0;outflag=1;}else outflag=0;break;
	default:break;
	}
EA=1;
}