基于旋转编码器的转速测量实验

#include <reg51.h> #include <intrins.h> #define uchar unsigned char #define uint unsigned int sbit W0=P2^0; sbit W1=P2^1; sbit W2=P2^2; sbit W3=P2^3; sbit W4=P2^4; sbit W5=P2^5; sbit flag=P1^0; sbit flag0=P1^4; uchar data wei[4]; uchar code duan[11]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; uint pluseNum=0; uint TpluseNum=0; uint time=0; float speed=0,speed0=0,speed1=0; void delay(int ms) { uint i=0,j=0; for(i=0;i<ms;i++) for(j=0;j<120;j++); } void display(void) { if(speed>=100) { speed=speed*100; wei[0]=(uint)speed/10000; wei[1]=((uint)speed/1000)%10; wei[2]=((uint)speed/1000)%10; wei[3]=((uint)speed/100)%10; wei[4]=(uint)speed%10; } if(speed>=10&speed<100) { speed=speed*100; wei[0]=(uint)speed/10000; wei[1]=((uint)speed/1000)%10; wei[2]=((uint)speed/1000)%10; wei[3]=((uint)speed/100)%10; wei[4]=(uint)speed%10; } if(speed<10&speed>=0) { speed=speed*100; wei[0]=(uint)speed/10000; wei[1]=((uint)speed/1000)%10; wei[2]=((uint)speed/1000)%10; wei[3]=((uint)speed/100)%10; wei[4]=(uint)speed%10; } P0=duan[wei[0]]; W1=0; delay(1); W1=1; P0=duan[wei[1]]; W2=0; delay(1); W2=1; P0=duan[wei[2]]; W3=0; delay(1); W3=1; P0=0x80; W3=0; delay(1); W3=1; P0=duan[wei[3]]; W4=0; delay(1); W4=1; P0=duan[wei[4]]; W5=0; delay(1); W5=1; if(flag==1) P0=0x40; else P0=0x3f; W0=0; delay(1); W0=1; } void main() { TMOD=0X01; TH0=0X3C; TL0=0XB0; ET0=1; EX0=1; EX1=1; IT0=1; IT1=1; TR0=1; EA=1; while(1) { display(); if(flag0) { TR0=0; EX1=1; speed=60*1000/(24); } else { TR0=1; EX1=0; speed=(float)speed0*60/24; } } } void Mpluse0() interrupt 0 { if(flag0) { speed1=(float)TpluseNum; TpluseNum=0; } else pluseNum++; } void Tpluse0() interrupt 2 { TpluseNum++; } void timer0() interrupt 1 { ET0=0; TH0=0X3C; TL0=0xB0; time++; if(time==20) { speed0=(float)pluseNum; pluseNum=0; time=0; } ET0=1; }