直流电机调速程序

#include<reg51.h>#include<absacc.h>//8254//8254//8254//电动机方向控制端口//8254//8254//8254//电动机方向控制端口//电动机1正转//电动机1反转//电动机1反转//电动机2正转//电动机2反转//电动机2反转//8254#defineCount1XBYTE[0x3fff]计数器1#defineCon_wordXBYTE[0x7fff]控制字#defineCon_MP3#definePos_M10x02#defineRe_M10x01#defineSto_M10x03#definePos_M20x08#defineRe_M20x04#defineSto_M20x0cuinttime1=10000,time2=10000;计数器0、计数器1初值ucharM1_flag=0,M2_flag=0;//电机运行标志位/************************函数声明***********************/voiddelay(uintn); //延时函数voidinit_T0(void); //定时器T0初始化ucharM_turn(ucharn);//读正反转设置函数ucharkey_scan(void);//键盘扫描函数voidmotor_star(ucharnum);//电机启动函数voidmotor_stop(ucharnum);//电机制动函数voidmotor_inc(ucharnum);//电机加速函数voidmotor_dec(ucharnum);//电机减速函数voidkey_manage(ucharnum);//键值处理函数/************************主程序*************************/main()ucharkeynum;init_T0();//按键监视程序//键盘处理程序}voiddelay(uintn){//按键监视程序//键盘处理程序}voiddelay(uintn){while(1){keynum=key_scan();key_manage(keynum);uchari,j;for(i=0;i<n;i++)for(j=19;j>0;j--);}/**********************定时器T0初始化*********************/voidinit_T0(void){TMOD=0x01; //工作方式1TH0=0x4c; //定时50msTL0=0x00;ET0=1;EA=1;TR0=1;}/********************定时器TO中断服务程序****************/voidtimer0(void)interrupt1{TR0=0;//重载定时器TO//重载定时器TO初值//写8254计数器0初值//写8254计数器1初值TL0=0x00;Con_word=0x30;Count0=(uchar)(time1/256);Count0=(uchar)(time1%256);Con_word=0x70;Count0=(uchar)(time2/256);Count0=(uchar)(time2%256);TRO=1;}ucharM_turn(ucharn)TRO=1;}ucharM_turn(ucharn)uchartemp,turn;temp=(P3&Ox3O)>>4;if(n==1){temp&=0x01;switch(temp){case0x00:turn=Re_M1;break;case0x01:turn=Pos_M1;break;}}else{temp=(temp&0x02)>>1;switch(temp){case0x00:turn=Re_M2;break;case0x01:turn=Pos_M2;break;}}return(turn);}voidmotor_star(ucharnum){//读电机控制状态//读电机控制状态//电动机1未启动//读电机1设置//设定启动速度//若电动机2未启动//读电机2设置uchartemp1,temp2;temp1=Con_M;if((num==1)&(M1_flag!=1)){M1_flag=1;temp2=M_turn(1);Con_M=(temp1&0xfc)|temp2;//送电机1控制time1=10000;}elseif((num==2)&(M2_flag!=1))M2_flag=1;temp2=M_turn(2);

Con_M=(temp1&0xfc)|temp2;//送电机1控制time2=10000;//设定启动速度}}voidmotor_stop(ucharnum){}voidmotor_stop(ucharnum){//读电机控制状态//电动机1启动//读电机控制状态//电动机1启动//读电机1设置//若电动机2启动//读电机2设置}voidmotor_inc(ucharnum){uchartemp1,temp2;temp1=Con_M;if((num==1)&(M1_flag==1)){M1_flag=0;temp2=Sto_M1;Con_M=(temp1&0xfc)|temp2;//送电机1控制}elseif((num==2)&(M2_flag==1)){M2_flag=0;temp2=Sto_M2;Con_M=(temp1&0xfc)|temp2;//送电机1控制}if((num==1)&(M1_flag==1))//电动机1启动{if(time1>0)time1=time1-2000;}//若电动机2//若电动机2启动{if(time2>0)time2=time2-2000;}}voidmotor_dec(ucharnum){if((num==1)&(M1_flag==1))//电动机1启动{if(time1<20000)time1=time1+2000;}elseif((num==2)&(M2_flag==1)) //若电动机2启动{if(time2<20000)time2=time2+2000;}}voidkey_manage(ucharnum){switch(num){case0:while(P1!=0xff);motor_star(2);break;case1:while(P1!=0xff);motor_stop(2);break;case2:while(P1!=0xff);motor_inc(2);break;case3:while(P1!=0xff);motor_dec(2);break;case4:while(P1!=0xff);motor_star(1);break;case5:while(P1!=0xff);motor_stop(1);break;case6:while(P1!=0xff);motor_inc(1);

break;case7:while(P1!=0xff);motor_dec(1);break;default:break;}}/**********************键盘扫描函数************************/ucharkey_scan(void){uchari,temp;temp=P1;if(temp!=0xff){delay(2