单片机按键计数,这种代码该如何编译呢？

ID:412348 · 发表于 2018-11-1 09:46

请问大家就是一个按键控制进行计数然后计算每分钟按键多少次这种代码该如何编译呢？

ID:419116 · 发表于 2018-11-1 14:47

很简单啊，一个定时器定时1分钟进入一次中断
一个变量，按键被触发一次就+1

定时器中断中，统计按键次数

ID:94031 · 发表于 2018-11-1 15:56

给个参考程序：
#include <reg52.h>
#include <absacc.h>
#include <stdio.h>

sbit p10=P1^0;
sbit p11=P1^1;
sbit p12=P1^2;

#define  UP 20
#define  DOWN  30
#define  STOP  40

code char CharTab[128] ={0x00,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
                     0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
                     0xfe,0xb0,0xed,0xf9,0xb3,0xdb,0xdf,0xf0,// 01234567
                     0xff,0xfb,0xff,0xff,0xff,0xff,0xff,0xff,// 89
                     0x00,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
                     0xff,0xff,0xff,0xff,0xff,0x01,0x80,0xff,//    -./
                     0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,// 01234567
                     0x7f,0x6f,0x11,0x1c,0x36,0x09,0x16,0x17,// 89    =
                     0xff,0x77,0x1f,0x4e,0x3d,0x4f,0x47,0xff,//  AbCdEFG
                     0x37,0xff,0x38,0x07,0x0e,0xff,0xff,0x7e,// HI  L NO
                     0x67,0xff,0xff,0x5b,0x46,0x3e,0xff,0xff,// P RSTU
                     0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
                     0xff,0x77,0x1f,0x0d,0x3d,0x6f,0x47,0x7b,//  AbcdEFg
                     0x17,0xff,0x38,0x4e,0x0e,0xff,0x15,0x1d,// hi  lmno
                     0xff,0xff,0x05,0x5b,0x0f,0x1c,0xff,0xff,// rStu
                     0xff,0x3b,0xff,0xff,0xff,0xff,0xff,0xff};

unsigned char temp;
unsigned char COUNTER;
unsigned int key_no;//按键次数
unsigned int sju;//20m秒计数

idata char  DisBuf[16];

void Ext_int0_INTT() interrupt 0
{

key_no++; //计数值加1

}

void tm0_INTT() interrupt 1
{

COUNTER++; //计数值加1

}

/********************************************************************
                           主函数
*********************************************************************/
main()
{
//long K;
char bb;

temp=0;
COUNTER=0;
TMOD=0x02; //定时器0在模式1下工作
TL0=0xbf; //定时器每200us产生一次溢出
TH0=0xbf; //自动重装的值

//显示值
/*K=87654321;
for(bb=2;bb<8;){DisBuf[bb]=0x20;bb++;}//清缓存
sprintf(DisBuf,"%lu",K);*/

IT0=1;
EX0=1;//
ET0=1; //使能定时器0中断
EA=1; //使能总中断
TR0=1; //开始计时

while(1)
{

if(COUNTER==100)//定时到 100-20ms,
{
   COUNTER=0;
sju++;if(sju>3000){EX0=0;}//sju=0;
if(sju==0){key_no=0;}

for(bb=0;bb<8;){DisBuf[bb]=0x20;bb++;}//清缓存
   sprintf(DisBuf,"%lu",(long)key_no);

   temp++;if(temp>=0x08){temp=0;}
      P0=temp;//位选

P2=CharTab[DisBuf[temp]];//列值
}

  }

}

ID:149144 · 发表于 2018-11-1 16:01

就是频率计，把 1s 改成 1min 就可以了

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