基于51单片机的电机调速程序

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1、#include#defineucharunsignedchar#defineuintunsignedintucharpercent=50;//电动机初始状态为停止状态ucharperiod=100;sbitred=P0^2;sbitgreen=P0^3;sbityellow=P0^0;sbitblue=P0^1;uchari=0,j=0;uchartime;uintdisx[4];sbitPWM=P0^5;sbitAdd=P2^3;sbitDec=P2^2;sbitqidong=P2^0;sbitting=P2^1;v

2、oiddelay(ucharn)//t=n*2mS{uchari,j,k;for(i=0;i=1){if(!Add)//加速控制按键识别{delay(10);if(!Add){if((percent>=50)&&(percent<=100))//正传PWM增加%5{percent+=2;yellow=0;red=1;gree

3、n=1;blue=1;}elseif((percent>=0)&&(percent<50))//反转PWM减少%5percent+=2;elseif(percent<0)//最小值为0percent=0;while(!Add);}}if(!Dec)//减速控制按键识别{delay(10);if(!Dec){if((percent>=50)&&(percent<=100))//正传PWM减少%5{percent-=2;yellow=1;red=1;green=1;blue=0;}elseif((percent>=0)&&(percent<5

4、0))//反转PWM增加%5percent-=2;elseif(percent<0)//最小值为0percent=0;while(!Dec);}}}if(!ting){delay(10);if(!ting){percent=50;red=0;yellow=1;green=1;blue=1;i=0;}}}voidmain(){TMOD=0x01;//定时工作方式1TH0=(65536-100)/256;//定时中断一次TL0=(65536-100)%256;EA=1;ET0=1;TR0=1;while(1){keyscan();}}void

5、timer0()interrupt1{TH0=(65536-100)/256;TL0=(65536-100)%256;time++;if(time==percent)PWM=0;elseif(time==period){PWM=1;time=0;}}