#include<reg51.h>#include<absacc.h>//8254//8254//8254//電動機方向控制端口//8254//8254//8254//電動機方向控制端口//電動機1正轉//電動機1反轉//電動機1反轉//電動機2正轉//電動機2反轉//電動機2反轉//8254#defineCount1XBYTE[0x3fff]計數器1#defineCon_wordXBYTE[0x7fff]控制字#defineCon_MP3#definePos_M10x02#defineRe_M10x01#defineSto_M10x03#definePos_M20x08#defineRe_M20x04#defineSto_M20x0cuinttime1=10000,time2=10000;計數器0、計數器1初值ucharM1_flag=0,M2_flag=0;//電機運行標志位/************************函數聲明***********************/voiddelay(uintn); //延時函數voidinit_T0(void); //定時器T0初始化ucharM_turn(ucharn);//讀正反轉設置函數ucharkey_scan(void);//鍵盤掃描函數voidmotor_star(ucharnum);//電機啟動函數voidmotor_stop(ucharnum);//電機制動函數voidmotor_inc(ucharnum);//電機加速函數voidmotor_dec(ucharnum);//電機減速函數voidkey_manage(ucharnum);//鍵值處理函數/************************主程序*************************/main()ucharkeynum;init_T0();//按鍵監視程序//鍵盤處理程序}voiddelay(uintn){//按鍵監視程序//鍵盤處理程序}voiddelay(uintn){while(1){keynum=key_scan();key_manage(keynum);uchari,j;for(i=0;i<n;i++)for(j=19;j>0;j--);}/**********************定時器T0初始化*********************/voidinit_T0(void){TMOD=0x01; //工作方式1TH0=0x4c; //定時50msTL0=0x00;ET0=1;EA=1;TR0=1;}/********************定時器TO中斷服務程序****************/voidtimer0(void)interrupt1{TR0=0;//重載定時器TO//重載定時器TO初值//寫8254計數器0初值//寫8254計數器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){//讀電機控制狀態//讀電機控制狀態//電動機1未啟動//讀電機1設置//設定啟動速度//若電動機2未啟動//讀電機2設置uchartemp1,temp2;temp1=Con_M;if((num==1)&(M1_flag!=1)){M1_flag=1;temp2=M_turn(1);Con_M=(temp1&0xfc)|temp2;//送電機1控制time1=10000;}elseif((num==2)&(M2_flag!=1))M2_flag=1;temp2=M_turn(2);

Con_M=(temp1&0xfc)|temp2;//送電機1控制time2=10000;//設定啟動速度}}voidmotor_stop(ucharnum){}voidmotor_stop(ucharnum){//讀電機控制狀態//電動機1啟動//讀電機控制狀態//電動機1啟動//讀電機1設置//若電動機2啟動//讀電機2設置}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;//送電機1控制}elseif((num==2)&(M2_flag==1)){M2_flag=0;temp2=Sto_M2;Con_M=(temp1&0xfc)|temp2;//送電機1控制}if((num==1)&(M1_flag==1))//電動機1啟動{if(time1>0)time1=time1-2000;}//若電動機2//若電動機2啟動{if(time2>0)time2=time2-2000;}}voidmotor_dec(ucharnum){if((num==1)&(M1_flag==1))//電動機1啟動{if(time1<20000)time1=time1+2000;}elseif((num==2)&(M2_flag==1)) //若電動機2啟動{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;}}/**********************鍵盤掃描函數************************/ucharkey_scan(void){uchari,temp;temp=P1;if(temp!=0xff){delay(2