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#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
//
unsigned char code dispbitcode[]=
{0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
//
//
unsigned char code LEDcode[]=
{0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00,0x40};
//
//
unsigned char dispbuf[8]={10,10,10,10,10,10,0,0};
//
unsigned char dispcount;
unsigned int uiResult;
bit sflag;
sbit START=P3^1;
sbit OE=P3^0;
sbit EOC=P3^2;
sbit P17=P1^7;
//
void delay(uint z) //延時(shí)函數(shù)，約1ms
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void Display()
{for(dispcount=0;dispcount<5;dispcount++)
{P2=0xff;
P1=LEDcode[dispbuf[dispcount]];
if(dispcount==3)
{P17=1;}
P2=dispbitcode[dispcount];
delay(1);
P2=0xff;
}
}
//
void ADC0809()
{
unsigned char i;
unsigned long y;
// START=0;
START=1;
START=0;
P0=0Xff;
//EOC=1;
while(EOC==0);
OE=1;
uiResult=P0;
OE=0;
y=uiResult;
uiResult=(y*2516)/128;
if(uiResult<2732)
{ uiResult=2732-uiResult;sflag=1;}
else
{ uiResult=uiResult-2732;sflag=0;}
i=4;
dispbuf[1]=0;
dispbuf[2]=0;
dispbuf[3]=0;
dispbuf[4]=0;
if(sflag==1)
{ dispbuf[0]=11;}
else
{ dispbuf[0]=10;}
dispbuf[5]=10;
dispbuf[6]=10;
dispbuf[7]=10;
while(uiResult/10)
{dispbuf=uiResult%10;
uiResult=uiResult/10;
i--;
}
dispbuf=uiResult;
}
//
void main(void)
{
xdata unsigned char kk = 0;
START=0;
OE=0;
uiResult=148;
while(1)
{
kk++;
Display();
ADC0809();
}
}
// |
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