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#include<reg51.h>
#include<intrins.h>
typedef unsigned char uchar;
typedef unsigned int uint;
#define Hidden 11
#define CmdDat 0
sbit Clock=P3^3;
sbit Data=P3^2;
const uint TimeOver=800;
uchar code DispCode[]={
//0x28,0xee,0x32,0xa2,0xe4,
// 0xa1,0x21,0xea,0x20,0xa0,
// 0xff
0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,
0xF8,0x80,0x90,0xff
};
uchar code DispBit[]={0x7f,0xfe,0xef,0xdf};
uint DispData=0;
uchar DispBuf[4]={0,0,0,0};
uchar RecDatCount;
uchar bdata RecDat;
sbit RecDat0=RecDat^0;
bit renovate;
bit ReciveMark=1;
uchar DotCnt=1;
uchar MaskSing=0;
bit StartOverCount;
bit RecEnd;
uint OverCount;
/**********************************************
uS延時函數
**********************************************/
void DelayUs2x(unsigned char t)
{
while(--t);
}
/**********************************************
mS延時函數
***********************************************/
void DelayMs(unsigned char t)
{
while(t--)
{
//大致延時1mS
DelayUs2x(245);
DelayUs2x(245);
}
}
void ReciveDate() interrupt 2
{
ReciveMark=0;
if(!StartOverCount)
StartOverCount=1;
RecDatCount++;
RecDat=RecDat<<1;
if(Data)
RecDat0=1;
else
RecDat0=0;
if(RecDatCount==8)
{
MaskSing=RecDat;
}
else if(RecDatCount==16)
{
if(MaskSing==CmdDat)
DispData=RecDat*256;
}
else if(RecDatCount==24)
{
if(MaskSing==CmdDat)
DispData+=RecDat;
}
else if(RecDatCount==32)
{
if(MaskSing==CmdDat)
DispData=RecDat;
renovate=1;
RecDatCount=0;
StartOverCount=0;
OverCount=0;
RecEnd=1;
RecDat=0;
}
}
void Timer0() interrupt 1
{
uchar temp;
static uchar Count;
if(StartOverCount)
OverCount++;
Count++;
if(Count==4)
Count=0;
P3|=0XB1;
temp=DispBit[Count];
P3&=temp;
temp=DispBuf[Count];
P1=DispCode[temp];
if(DotCnt==(4-Count))
P1&=0XDF;
TH0=-(600/256);
TL0=-(600%256);
}
void main()
{
uchar temp0,temp1,temp2,temp3;
uint temp;
TH0=-(600/256);
TL0=-(600%256);
TR0=1;
IT1=1;
EA=1;
ET0=1;
EX1=1;
PT0=0;
PX1=1;
renovate=1;
P1=0;
Clock=1;
Data=1;
//////////////////////
DispData=9999;
//DispData=8888;
//DispData=654;
for(;;)
{
if(renovate)
{
temp=DispData;
temp%=10000;
temp3=temp%10;
temp/=10;
temp2=temp%10;
temp/=10;
temp1=temp%10;
temp/=10;
temp0=temp%10;
if((temp0==0)&&(DotCnt<3))
DispBuf[0]=Hidden;
else
DispBuf[0]=temp0;
if((temp0==0)&&(temp1==0)&&(DotCnt<2))
DispBuf[1]=Hidden;
else
DispBuf[1]=temp1;
if(((temp0==0)&&(temp1==0)&&(temp2==0)
&&(DotCnt<1))||((temp3==0)&&(temp2==0)
&&(DotCnt>2)))
DispBuf[2]=Hidden;
else
DispBuf[2]=temp2;
if((temp3==0)&&(DotCnt>1))
DispBuf[3]=Hidden;
else
DispBuf[3]=temp3;
renovate=0;
}
if(OverCount>=TimeOver)
{
RecDatCount=0;
StartOverCount=0;
OverCount=0;
RecEnd=1;
}
}
}

復制代碼