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| #include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit k3 = P3^4;
sbit k4 = P3^5;
uchar code DSY_CODE[]=
{
0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff
};//共阳段码
uchar code Scan_BITs[]=
{
0x20,0x10,0x08,0x04,0x02,0x01
};
uchar data Buffer_Counts[]={0,0,0,0,0,0};
uint Count_A=0;
uint Count_B=0;
void DelayMS(uint x)
{
uchar t;
while(x--)
{
for(t=0;t<120;t++);
}
}
void Show\_Counts()
{
uint i;
Buffer_Counts[2] = Count_A / 100;
Buffer_Counts[1] = Count_A % 100 /10;
Buffer_Counts[0] = Count_A % 10;
if(Buffer_Counts[2]==0)
{
Buffer_Counts[2] = 0x0a;
if(Buffer_Counts[1]==0)
{
Buffer_Counts[1]=0x0a;
}
}
Buffer_Counts[5] = Count_B / 100;
Buffer_Counts[4] = Count_B % 100 /10;
Buffer_Counts[3] = Count_B % 10;
if(Buffer_Counts[5]==0)
{
Buffer_Counts[5] = 0x0a;
if(Buffer_Counts[4]==0)
{
Buffer_Counts[4]=0x0a;
}
}
for(i=0;i<6;i++)
{
P2 = Scan_BITs[i];
P1 = DSY_CODE[Buffer_Counts[i]];
DelayMS(1);
}
}
void main()
{
IT0 = 1;//启用外部中断0
IT1 = 1;//启用外部中断1
PX0 = 1;//设定外部中断0为最高优先级中断
IE = 0x85;
while(1)
{
if(k3 == 0) Count_A = 0;
if(k4 == 0) Count_B = 0;
Show\_Counts();
}
}
/\*外部中断0函数\*/
void EX\_INT0() interrupt 0
{
Count_A++;
}
/\*外部中断1函数\*/
void EX\_INT1() interrupt 2
{
Count_B++;
}
|
