发一个单片机红外测速、调速程序

ID:77707 · 发表于 2015-4-23 13:42

采用80c51单片机进行测速调速。
nclude <reg51.h>
#include <intrins.h>
unsigned char code lcd[]={"speed0k"};
unsigned char code table[]= {"0123456789"};
unsigned char code pin[]={"Hz"};
unsigned char zhuan[5];
unsigned char shi=20;
unsigned int  y,jia;
sbit rd=P2^7;
sbit rw=P2^6;
sbit e=P2^5;
sbit kong=P3^0;
void delay1(unsigned char ms)  //延时函数
{
      unsigned char j;
      while(ms--)
      {
            for(j=0;j<125;j++);
      }
}
void delay()//延时函数
{
      _nop_();
      _nop_();
      _nop_();
}
bit du()//LCD读忙状态
{
      bit s;
      rw=1;
      rd=0;
      delay();
      e=1;
      delay();
      s=(bit)(P0&0x80);
      e=0;
      return  s;
}
void xie(unsigned char com)//LCD写命令
{
      while (du());
      rd=0;
      rw=0;
      delay();
      e=0;
      P0=com;
      e=1;
      delay();
//       delay1(20);
}
void xieshuju(unsigned char dat)//LCD写数据
{
      while (du());
      rw=0;
      rd=1;
      delay();
      e=0;
      P0=dat;
      e=1;
      delay();
      e=0;
}
void chushihua()//LCD初始化
{
      xie(0x38);
      xie(0x0c);
      xie(0x01);
      xie(0x06);
}

void delayms (unsigned char time)//延时函数
{
      unsigned char  i,j;
      for(i=0;i<time;i++)       ;
      e=0;
      for(j=100;j>1;j--) ;
}
void tiaosu(unsigned int shi1)//电机调速
{
      kong=0;
      delayms(5);
      kong=1;
      delayms(shi1);
}
unsigned char keycan()//按键返回值函数
{

            static       unsigned char key;
            if(P3!=0xff)
            {
            delay1(10);
            if(P3!=0xff)
            key=P3&0Xff;
            if(P3==0xfd)
            jia=jia+5;
            if(P3==0xfb)
            jia=jia-5;
            if(jia<=5)
            jia=3;
            }
      while(P3!=0xff);
return(key);
}
void zhuanhuan()  //电机转速数据处理
{
      zhuan[0]=table[y/1000%10];
zhuan[1]=table[y/100%10];
zhuan[2]=table[y/10%10];
         zhuan[3]=table[y%10];
}
void main ()
{
      unsigned char  wei;
      unsigned char w=0;
      EA=1;
      TR0=1;
      ET0=1;
      TR1=1;
      ET1=1;
      TH0=0x3c;
      TL0=0xb0;
      TH1=0x00;
      TL1=0x00;
      TMOD=0x51;
      chushihua();
      delay1(20);    //在这里如果时间不过长的话控制位置无用
      xie(0x84);
      delay();
      while (lcd[w]!='\0')//LCD显示cesuji
      {
            xieshuju(lcd[w]);
            w++;
      delay();
      }
      w=0;
      xie(0xca);
      while (pin[w]!='\0')//LCD显示hz
      {
            xieshuju(pin[w]);
            w++;
            delay();
      }
while (1)
      {
            wei=keycan();
            switch (wei)
            {
                     case 0xfe:  kong=0;       break;//电机全速启动
                     case 0xfd:
                     case 0xfb:  tiaosu(jia);break;
                     case 0xf7:  kong=1;       break;//电机停止
            }
      }
}
void zhongduan()  interrupt 1 //中断  刷新数据
{
      unsigned char i;
      TH0=0x3c;
      TL0=0xb0;  //50ms中断一次
      shi--;
      if(shi<1)//1s取数据一次
      {
      shi=20;
      y=(TH1*256+TL1);//红外对管中断次数
      TH1=0x00;
      TL1=0x00;
      zhuanhuan();//数据转换
      xie(0xc6);
      for(i=0;i<4;i++)//LCD数据处理显示
      {
         xieshuju(zhuan[ i]);
         delay();
      }
      }
}
void zhongd()  interrupt 3//红外对管中断次数
{
      TH1=0x00;
      TL1=0x00;
}

电路图