心率计51单片机代码.doc

#include "STC12C5A.h"

#include "SMG.h"

#define FSOC 24000000L

#define T1MS (65536-FSOC/12/1000)

sbit LED0 = P0^0;

unsigned int count=0;计时标志数

unsigned int xinlv=0;心率计算器

unsigned char seg[10] = {0xfc,0x60,0xda,0xf2,0x66,0xb6,0xbe,0xe0,0xfe,0xf6}; sbit HC595_RST = P0^6;

sbit HC595_SCK = P0^4;

sbit HC595_RCK = P0^5;

sbit HC595_DAT = P0^7;

外部中断代码void Exti0_Init()

{

IT0 = 1; //下降沿触发 TCON.0=1

EX0 = 1; //开外部中断0 IE.0=1

EA = 1; //开总中断

}

void Exit0_ISR() interrupt 0

{

Xinlv++;

LED0=0;

delay_ms(2);

LED0=1;

}

定时器代码void Timer0_Init()

{

TMOD = 0x01;

TR0 = 1; //16位定时器工作方式

TH0 = T1MS>>8;

TL0 = T1MS;

ET0 = 1; //打开定时器0中断

EA = 1; //打开总中断

}

void Timer0_ISR() interrupt 1

{

unsigned int temp;

count++;

TH0 = T1MS>>8;

TL0 = T1MS;

if(count=5000)

temp=Xinlv;

for{}

SMG_Display(temp);

}

数码管部分代码

void HC595_send_byte(unsigned char byte)

{

unsigned char i,temp;

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

{

temp = byte&(1<

if(temp) HC595_DAT = 1;

else HC595_DAT = 0;

HC595_SCK = 1; //SCK产生一个上升沿

HC595_SCK = 0;

}

HC595_RCK = 1; //RCK产生一个上升沿

HC595_RCK = 0;

}

void SMG_ShowNum(unsigned int num) //数码管显示函数{

HC595_send_byte(tab_seg[num]);

}

void delay_ms(unsigned int time)//延时函数

{

unsigned int t;

for(;time>0;time--)

{

t=1500;

while(t--);

}

}

void SMG_Display(unsigned int num)

{

SMG_ShowNum(num/1000);

P0 =0x08>>1;

delay_ms(2);

SMG_ShowNum((num%1000)/100);

P0 =0x08>>2;

delay_ms(2);

SMG_ShowNum((num%100)/10);

P0 =0x08>>3;

delay_ms(2);

SMG_ShowNum(num%10);

P0 =0x08>>4;

delay_ms(2);

}

void main(void)

{

while(1)

{

}

}