單片機(jī)計(jì)數(shù)方波脈沖個(gè)數(shù) 程序+Proteus仿真

ID:763359 · 發(fā)表于 2020-5-29 17:52

單片機(jī)檢測(cè)方波脈沖個(gè)數(shù)，有protus仿真圖，帶顯示功能，555產(chǎn)生方波電路。附件帶原程序及仿真圖。有定時(shí)中斷，外部中斷。

仿真原理圖如下（proteus仿真工程文件可到本帖附件中下載）

單片機(jī)源程序如下:

#include <reg51.h>
#include "intrins.h"
sbit DIN = P0^0;
sbit load = P0^1;
sbit CLK = P0^2;
sbit LED = P0^7;
unsigned int speed = 0x00;
unsigned int count = 0x00;
unsigned char table[]={0x7e,0x30,0x6d,0x79,0x33,0x5b,0x5f,0x70,0x7f,0x7b,0x77,0x1f,0x4e,0x3d,0x4f,0x47,0x67,0x3e,0x0ff,0x00};
void int_count(void)
{
EA = 0x00;
TMOD = 0x01;
TH0 = 0x3c; //12M 50ms
TL0 = 0x0b0;
ET0 = 1;
EA = 1;
TR0 = 1;
IT0 = 1;
EX0 = 1;
}
void sendbyte(unsigned char dat)
{
unsigned char i,temp;
_nop_();
for(i=0;i<8;i++)
{
temp = dat&0x80;
dat=dat<<1;
if(temp)
DIN = 1;
else
DIN = 0;
CLK = 0;
_nop_();
CLK = 1;
}
}
void sendword(unsigned char addr,unsigned char dat)
{
load = 0;
_nop_();
sendbyte(addr);
_nop_();
sendbyte(dat);
_nop_();
load = 1;
}
void int7219(void)
{
sendword(0x0c,0x01);
sendword(0x0a,0x09);
sendword(0x0b,0x03);
sendword(0x09,0x00);
sendword(0x0f,0x00);
}
void display(void)
{
unsigned char i,tmp;
tmp = count / 100;
sendword(0x02,table[tmp]);
tmp = count % 100;
i = tmp / 10;
sendword(0x03,table[i]);
i = tmp % 10;
sendword(0x04,table[i]);
}
void main(void)
{
int7219();
int_count();
while(1)
{
if(count>500)
{
// display();
count = 0x00;
}
display();
}
}
void int0_fun(void) interrupt 0 using 1
{
EX0 =0;
count ++;
EX0 = 1;
// LED = ~LED;
}
void int_time(void) interrupt 1 using 2
{
TH0 = 0x3c; //12M 50ms
TL0 = 0x0b0; LED = ~LED;
}