12-步进电机的按键控制及显示.zip

#include<reg52.h> #define uchar unsigned char #define uint unsigned int #define MotorData P0 //步进电机控制接口定义 sbit KEY1 = P3^2; //定义按键的输入端S1键 sbit KEY2 = P3^3; sbit KEY3 = P3^4; sbit P2_0 = P2^0; uchar code table[]={0x8E,0x80,0xc0};//共阳数字编码 F,B.0 uchar phasecw[4] ={0x08,0x04,0x02,0x01};//正转 电机导通相序 D-C-B-A uchar phaseccw[4]={0x01,0x02,0x04,0x08};//反转 电机导通相序 A-B-C-D static speed=5; static a=0; //ms延时函数 void Delay_xms(uint x) { uint i,j; for(i=0;i<x;i++) for(j=0;j<112;j++); } void delay(uchar i) //延时函数 { uchar j,k; for(j=i;j>0;j--) for(k=125;k>0;k--); } /*数码管显示函数*/ void display() //显示函数 { P0=table[a-1]; P2_0 = 0; delay(5); P2_0 = 1; } //顺时针转动 void MotorCW(void) { uchar i; for(i=0;i<4;i++) { MotorData=phasecw[i]; Delay_xms(speed);//转速调节 } } //逆时针转动 void MotorCCW(void) { uchar i; for(i=0;i<4;i++) { MotorData=phaseccw[i]; Delay_xms(speed);//转速调节 } } //停止转动 void MotorStop(void) { MotorData=0x00; } //按键检测函数 int anjian(void) { if(KEY1 == 0) { Delay_xms(100); if(KEY1 == 0) a = 1; } if(KEY2 == 0) { Delay_xms(100); if(KEY2 == 0) a = 2; } if(KEY3 == 0) { Delay_xms(100); if(KEY3 == 0) a = 3; } return a; } void main(void) { uint m; // m=anjian(); Delay_xms(50);//等待系统稳定 while(1) { m=anjian(); switch (m) { case 1: while(1) { MotorCW(); //顺时针转动 m=anjian(); display(); if(m != 1) break; } break; case 2: while(1) { MotorCCW(); //逆时针转动 m=anjian(); display(); if(m != 2) break; } break; case 3: MotorStop(); while(1) { m=anjian(); display(); if(m != 3) break; } break; } } }