基于单片机数据采集系统设计C程序.doc
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#include reg52.h
#define uint unsigned int
#define uchar unsigned char
uchar code LEDData[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
sbit OE = P1^0;
sbit EOC = P1^1;
sbit ST = P1^2;
sbit CLK = P1^3;
sbit a1 = P2^4;
sbit a2 = P2^5;
sbit a3 = P2^6;
int a;
void DelayMS(uint ms)
{
uchar i;
while(ms--)
{
for(i=0;i120;i++);
}
}
void Display_Result(uchar d)
{
P2 = 0xf7;
P0 = LEDData[d%10];
DelayMS(5);
P2 = 0xfb;
P0 = LEDData[d%100/10];
DelayMS(5);
P2 = 0xfd;
P0 = LEDData[d/100];
DelayMS(5);
P2 = 0xfe;
P0 = LEDData[a];
DelayMS(5);
}
void main()
{
TMOD = 0x02;
TH0 = 0x14;
TL0 = 0x00;
IE = 0x82;
TR0 = 1;
while(1)
{
while(a3==0a2==0a1==0)
{
P1=0x0f;
a=0;
ST = 0;
ST = 1;
ST = 0;
while(EOC == 0);
OE = 1;
Display_Result(P3);
OE = 0;
}
while(a3==0a2==0a1==1)
{
P1=0x1f;
a=1;
ST = 0;
ST = 1;
ST = 0;
while(EOC == 0);
OE = 1;
Display_Result(P3);
OE = 0;
}
while(a3==0a2==1a1==0)
{
P1=0x2f;
a=2;
ST = 0;
ST = 1;
ST = 0;
while(EOC == 0);
OE = 1;
Display_Result(P3);
OE = 0;
}
while(a3==0a2==1a1==1)
{
P1=0x3f;
a=3;
ST = 0;
ST = 1;
ST = 0;
while(EOC == 0);
OE = 1;
Display_Result(P3);
OE = 0;
}
while(a3==1a2==0a1==0)
{
P1=0x4f;
a=4;
ST = 0;
ST = 1;
ST = 0;
while(EOC == 0);
OE = 1;
Display_Result(P3);
OE = 0;
}
while(a3==1a2==0a1==1)
{
P1=0x5f;
a=5;
ST = 0;
ST = 1;
ST = 0;
while(EOC == 0);
OE = 1;
Display_Result(P3);
OE = 0;
}
while(a3==1a2==1a1==0)
{
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