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#include "reg52.h"
#include<xpt2046.h>
#include<intrins.h>
typedef unsigned int u16;
typedef unsigned char u8;
#define uchar unsigned char
#define uint unsigned int
sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;
sbit DIN=P3^4;
sbit CS=P3^5;
sbit CLK=P3^6;
sbit DOUT=P3^7;
uchar disp[4];
u8 code smgduan[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
void SPI_Write(uchar dat)
{
uchar i;
CLK = 0;
for(i=0; i<8; i++)
{
DIN = dat >> 7;
dat <<= 1;
CLK = 0;
CLK = 1;
}
}
uint SPI_Read(void)
{
uint i, dat=0;
CLK = 0;
for(i=0; i<12; i++)
{
dat <<= 1;
CLK = 1;
CLK = 0;
dat |= DOUT;
}
return dat;
}
uint Read_AD_Data(uchar cmd)
{
uchar i;
uint AD_Value;
CLK = 0;
CS = 0;
SPI_Write(cmd);
for(i=6; i>0; i--);
CLK = 1;
_nop_();
_nop_();
CLK = 0;
_nop_();
_nop_();
AD_Value=SPI_Read();
CS = 1;
return AD_Value;
}
void delay(u16 i)
{
while(i--);
}
void datapros()
{
u16 temp;
temp = Read_AD_Data(0x94);
disp[0]=smgduan[temp/1000];
disp[1]=smgduan[temp%1000/100];
disp[2]=smgduan[temp%1000%100/10];
disp[3]=smgduan[temp%1000%100%10];
}
void DigDisplay()
{
u8 i;
for(i=0;i<4;i++)
{
switch(i)
{
case(0):
LSA=0;LSB=0;LSC=0; break;
case(1):
LSA=1;LSB=0;LSC=0; break;
case(2):
LSA=0;LSB=1;LSC=0; break;
case(3):
LSA=1;LSB=1;LSC=0; break;
}
P0=disp[3-i];
delay(100);
P0=0x00;
}
}
void main()
{
while(1)
{
datapros();
DigDisplay();
}
}
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