c51中断计数器-EDA365

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c51中断计数器

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标签:
计数器
中断
C51

#include

#define uchar unsigned char

#define uint unsigned int

#define ulong unsigned long

uint tc;

static uint i;

uchar ledbuff[8];

uchar ledchar[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};

void init_en()

{

EA = 1;

ET1=1;

ET0=1;

TMOD = 0X51;

TH0 = 0XFC;

TL0 = 0X67;

TR0=1;

TR1=1;

}

void clac(ulong num)

{

static uchar j;

uchar buff[8];

buff[6] = num%10;

buff[5] = num/10%10;

buff[4] = num/100%10;

buff[3] = num/1000%10;

buff[2] = num/10000%10;

buff[1] = num/100000%10;

buff[0] = num/1000000%10;

buff[7] = num/10000000%10;

for(j=0;j<8;j++)

ledbuff[j]=ledchar[buff[j]];

}

void display()

{

static uchar j=0;

j++;

j %= 8;

P2 = j;

P1 = ledbuff[j];

}

void main()

{

static ulong count;

init_en();

while(1)

{

if(i == 1000)

{

i=0;

TR0=TR1 = 0;

count = (tc*65536+TH1*256 +TL1);

count =count*12/11059.2;

clac(count);

count = tc = TH1 =TL1 = 0;

TR0=TR1 = 1;

}

}

}

void t0() interrupt 1

{

TH0 = 0XFC;

TL0 = 0X66;

i++;

display();

}

void t1() interrupt 3

{

tc++;

}

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