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標題: 51單片機小車制作 STEP2.3 直流電機PWM按鍵調速 [打印本頁]

作者: daliu 時間: 2014-9-12 01:48
標題: 51單片機小車制作 STEP2.3 直流電機PWM按鍵調速
本帖最后由 daliu 于 2014-9-12 01:49 編輯

http://you.video.sina.com.cn/api/sinawebApi/outplayrefer.php/vid=126314154_1898860871/s.swf
上面的如果播放不了，可以去這個地址看http://www.tudou.com/programs/view/Yk844_HjfJ0/
思路什么的，貼吧有http://tieba.baidu.com/p/2807615491?pn=3

#include

sbit PWM_OUT1P=P0^5;
sbit PWM_OUT2P=P0^6;
sbit PWM_OUT3P=P0^7;
sbit key1=P0^0;
sbit key2=P0^1;
bit PWM_OUTDAT1;
bit PWM_OUTDAT2;
bit PWM_OUTDAT3;
bit delaybit1=0; //延時開關
bit delaybit2=0;

unsigned int PWM_t1=0;
unsigned int PWM_t2=0;
unsigned int PWM_t3=0;
unsigned int delaytime_res1=0;//延時長度計數
unsigned int delaytime_res2=0;
unsigned int keybit=0; //按鍵計數

PWM_OUT1(unsigned int Cycle1,unsigned int PWM_on1);
PWM_OUT2(unsigned int Cycle2,unsigned int PWM_on2);
PWM_OUT3(unsigned int Cycle3,unsigned int PWM_on3);

void main()
{
TMOD=0x01;
TH0=(65536-100)/256;
TL0=(65536-100)%6;
IE=0x82;
TR0=1;
key1=1;
key2=1;
keybit=0;

while(1)
{
if(key1==0)
{
delaybit1=1;
if(delaytime_res1==2)
{
if(key1==0)
{
if(keybit<7)
keybit++;
}
}
}
  else
  {
  delaytime_res1=0;
delaybit1=0;
  }

if(key2==0)
{
delaybit2=1;
if(delaytime_res2==2)
{
if(key2==0)
{
if(keybit>0)
keybit--;
}
}
}
else
{
delaybit2=0;
delaytime_res2=0;
}

switch(keybit)
{

case 1:
PWM_OUT1P=PWM_OUT1(1000,900);
PWM_OUT2P=PWM_OUT2(1000,900);
break;
case 2:
PWM_OUT1P=PWM_OUT1(1000,700);
PWM_OUT2P=PWM_OUT2(1000,700);
break;
case 3:
PWM_OUT1P=PWM_OUT1(1000,500);
PWM_OUT2P=PWM_OUT2(1000,500);
break;
case 4:
PWM_OUT1P=PWM_OUT1(1000,300);
PWM_OUT2P=PWM_OUT2(1000,300);
break;
case 5:
PWM_OUT1P=PWM_OUT1(1000,100);
PWM_OUT2P=PWM_OUT2(1000,100);
break;
case 6:
PWM_OUT1P=PWM_OUT1(1000,0);
PWM_OUT2P=PWM_OUT2(1000,0);
break;
}

  }
}

void Time_r() interrupt 1
{
TH0=(65536-100)/256;
TL0=(65536-100)%6;
PWM_t1++;
PWM_t2++;
PWM_t3++;
if(delaybit1==1)
{
delaytime_res1++;
}
if(delaybit2==1)
{
delaytime_res2++;
}
}

PWM_OUT1(unsigned int Cycle1,unsigned int PWM_on1)
{
if(PWM_t1==PWM_on1)
PWM_OUTDAT1=0;
else if(PWM_t1==Cycle1)
{
PWM_t1=0;
if(PWM_on1!=0)
PWM_OUTDAT1=1;
}

return PWM_OUTDAT1;
}

PWM_OUT2(unsigned int Cycle2,unsigned int PWM_on2)
{
if(PWM_t2==PWM_on2)
PWM_OUTDAT2=0;
else if(PWM_t2==Cycle2)
{
PWM_t2=0;
if(PWM_on2!=0)
PWM_OUTDAT2=1;
}
return PWM_OUTDAT2;
}

作者: lxa0 時間: 2015-3-19 11:14
單片機與電機之間應該加入驅動電路

歡迎光臨 (http://m.zg4o1577.cn/bbs/)

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