用单片机控制直流电动机的正反转

Temp=_crol_(temp,1);//左移1位Temp=_cror_(temp,1);//右移1位用单片机控制直流电动机的正反转、加减速的程序如何用C语言写啊带有5个独立键盘的，当按下按键1时要求正转，按键2反转，按键3加速，按键4减速，按键5停止#include<reg52.h>#define uchar unsigned char#define uint unsigned intsbit PW1=P2^0 ;sbit PW2=P2^1 ; //控制电机的两个输入sbit accelerate=P2^2 ; //调速按键sbit stop=P2^3 ; //停止按键sbit left=P2^4 ; //左转按键sbit right=P2^5 ; //右转按键#define right_turn PW1=0;PW2=1 //顺时针转动#define left_turn PW1=1;PW2=0 //逆向转动#define end_turn PW1=1;PW2=1 //停转uint t0=25000,t1=25000; //初始时占空比为50%uint a=25000; // 设置定时器装载初值25ms 设定频率为20Hzuchar flag=1; //此标志用于选择不同的装载初值uchar dflag; //左右转标志uchar count; //用来标志速度档位void keyscan(); //键盘扫描void delay(uchar z);void time_init(); //定时器的初始化void adjust_speed(); //通过调整占空比来调整速度//**********************************//void main(){time_init(); //定时器的初始化while(1){keyscan(); //不断扫描键盘程序，以便及时作出相应的响应}}//*************************************//void timer0() interrupt 1 using 0{if(flag){flag=0;end_turn;a=t0; //t0的大小决定着低电平延续时间TH0=(65536-a)/256;TL0=(65536-a)%256; //重装载初值}else{flag=1; //这个标志起到交替输出高低电平的作用if(dflag==0){right_turn; //右转}else{left_turn; //左转}a=t1; //t1的大小决定着高电平延续时间TH0=(65536-a)/256;TL0=(65536-a)%256; //重装载初值}}void time_init(){TMOD=0x01; //工作方式寄存器软件起动定时器定时器功能方式1 定时器0 TH0=(65536-a)/256;TL0=(65536-a)%256; //装载初值ET0=1; //开启定时器中断使能EA=1; // 开启总中断TR0=0;}//****************************************//void delay(uchar z) //在12M下延时z毫秒{uint x,y;for(x=z;x>0;x--)for(y=110;y>0;y--);}//******************************//void keyscan(){if(stop==0){TR0=0; //关闭定时器0 即可停止转动end_turn;}if(left==0){TR0=1;dflag=1; //转向标志置位则左转}if(right==0){TR0=1;dflag=0; //转向标志复位则右转}if(accelerate==0){delay(5) ; //延时消抖if(accelerate==0){while(accelerate==0) ; //等待松手count++;if(count==1){t0=20000;t1=30000; //占空比为百分之60 }if(count==2){t0=15000;t1=35000; //占空比为百分之70 }if(count==3){t0=10000;t1=40000; //占空比为百分之80 }if(count==4){t0=5000;t1=45000; //占空比为百分之90 }if(count==5){count=0;}}}}的邮箱贴出来: /**************************************************************** ******************* * 标题: 步进电机试验五(正转一圈反转一圈) * * * * 通过本例程(即一个脉冲,转3.75 度) * * * * 请学员一定要消化掉本例程* * ****************** ********************************************************************/ #include "r eg52.h" void delay(unsigned int t); //Motor sbit F1 = P1^0; sbit F2 = P1^1; sbit F3 = P1 ^2; sbit F4 = P1^3; unsigned char code FFW[8]={0xfe,0xfc,0xfd,0xf9,0xfb,0xf3,0xf7,0xf6}; //反转unsigned char code FFZ[8]={0xf6,0xf7,0xf3,0xfb,0xf9,0xfd,0xfc,0xfe}; //正转unsigne d int K; /********************************************************************** * * * 步进电机驱动* * * ***************************************************** ******************/ void motor_ffw() { unsigned char i; unsigned int j; for (j=0; j<12; j++) //转1*n圈{ for (i=0; i<8; i++) //一个周期转30度{ if(K==1) P1 = FFW[i]&0x1f; //取数据if(K==2) P1 = FFZ[i]&0x1f; delay(5); //调节转速} } } /******************** ********************************** * * 延时程序* ***************************** ***************************/ void delay(unsigned int t) { unsigned int k; while(t--) { f or(k=0; k<80; k++) { } } } main() { while(1) { K=1; motor_ffw(); K=2; motor_ffw(); } }•回复•1楼•2009-04-22 10:41•举报|•1#include<reg51.h>sbit S1=P1^4; //将S1位定义为P1.4引脚sbit S2=P1^5;sbit S3=P1^6;sbit S4=P1^0;sbit S5=P1^1;sbit S6=P1^2;sbit S7=P1^3;unsigned char keyval; //储存按键值unsigned char ID; //储存功能标号void delay(void){unsigned char i,j;for(i=0;i<150;i++)for(j=0;j<100;j++);}void motor_delay(void){unsigned int i;for(i=0;i<5000;i++);}void forward( ){P2=0xfc; //P2口低四位脉冲1100P0=0xfc; //P0口低四位脉冲1100 motor_delay();P2=0xf6; //P2口低四位脉冲0110P0=0xf6;motor_delay();P2=0xf3; //P2口低四位脉冲0011P0=0xf3;motor_delay();P2=0xf9; //P2口低四位脉冲1001P0=0xf9;motor_delay();}void backward(){P2=0xfc; //P2口低四位脉冲1100P0=0xfc;motor_delay();P2=0xf9; //P2口低四位脉冲1001 P0=0xf9;motor_delay();P2=0xf3; //P2口低四位脉冲0011 P0=0xf3;motor_delay();P2=0xf6; //P2口低四位脉冲0110 P0=0xf6;motor_delay();}void stop(void){P2=0xff; //停止输出脉冲P0=0xff ;}void forward1( ){P0=0xfc; //P0口低四位脉冲1100 P2=0xff;motor_delay();P0=0xf6; //P0口低四位脉冲0110 P2=0xff;motor_delay();P0=0xf3; //P0口低四位脉冲0011 P2=0xff;motor_delay();P0=0xf9; //P0口低四位脉冲1001 P2=0xff;motor_delay();}void backward1(){P0=0xfc; //P0口低四位脉冲1100 P2=0xff;motor_delay();P0=0xf9; //P0口低四位脉冲1001 P2=0xff;motor_delay();P0=0xf3; //P0口低四位脉冲0011 P2=0xff;motor_delay();P0=0xf6; //P0口低四位脉冲0110 P2=0xff;motor_delay();}void forward2( ){P2=0xfc; //P2口低四位脉冲1100 P0=0xff;motor_delay();P2=0xf6; //P2口低四位脉冲0110 P0=0xff;motor_delay();P2=0xf3; //P2口低四位脉冲0011 P0=0xff;motor_delay();P2=0xf9; //P2口低四位脉冲1001 P0=0xff;motor_delay();}void backward2(){P2=0xfc; //P2口低四位脉冲1100 P0=0xff;motor_delay();P2=0xf9; //P2口低四位脉冲1001 P0=0xff;motor_delay();P2=0xf3; //P2口低四位脉冲0011P0=0xff;motor_delay();P2=0xf6; //P2口低四位脉冲0110P0=0xff;motor_delay();}void main(void){TMOD=0x01; //使用定时器T0的模式1EA=1; //开总中断ET0=1; //定时器T0中断允许TR0=1; //启动定时器T0TH0=(65536-500)/256; //定时器T0赋初值，每计数200次（217微秒）发送一次中断请求TL0=(65536-500)%6; //定时器T0赋初值keyval=0; //按键值初始化为0，什么也不做ID=0;while(1){switch(keyval) //根据按键值keyval选择待执行的功能{case 1:forward();break;case 2:backward();break;case3:stop();break;case 4:forward1();break;case 5:backward1();break;case 6:forward2();break;case 7:backward2();break;}}}void Time0_serve(void) interrupt 1 using 1{TR0=0; //关闭定时器T0if((P1&0xff)!=0xff) //第一次检测到有键按下{delay(); //延时一段时间再去检测if((P1&0xff)!=0xff) //确实有键按下{if(S1==0) //按键S1被按下keyval=1;if(S2==0) //按键S2被按下keyval=2;if(S3==0) //按键S3被按下keyval=3;if(S4==0) //按键S4被按下keyval=4;if(S5==0) //按键S5被按下keyval=5;if(S6==0) //按键S6被按下keyval=6;if(S7==0) //按键S7被按下keyval=7;}}TH0=(65536-200)/256; //定时器T0的高8位赋初值TL0=(65536-200)%6; //定时器T0的低8位赋初值TR0=1; //启动定时器T0}。