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51 MCU C programming (VIII. DC motor relay control forward and reverse rotation)

Publisher:SHow111timeLatest update time:2015-09-25 Source: eefocus Reading articles on mobile phones Scan QR code
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Program name: DC motor relay control forward and reverse

Programming    : jumpmysoul

Program function: Use two buttons to control the forward and reverse rotation of the DC motor

[Reprint] 51 MCU C Programming (VIII. DC Motor Relay Control Forward and Reverse)

#include

sbit zheng=P1^0;    //Forward button
sbit fan=P1^1;     //Reverse button
sbit JD=P3^0;     //Relay control pin

void delay1ms(int);
//********************************Main function************************************
void main()
{
 JD=0;
 P1=0xff;
 while(1)
 {
  if(zheng==0)     //If the forward button is pressed
  {
    delay1ms(10);    //Delay debounceif
    (zheng==0)
    while(zheng==0);   //Judge whether the button is releaseddelay1ms
    (10);
    while(zheng==0);
    JD=1;
  }
  if(fan==0)       //If the reverse button is pressed
  {
    delay1ms(10);     //Delay debounceif
    (fan==0)
    while(fan==0);     //Judge whether the button is releaseddelay1ms
    (10);
    while(fan==0);
    JD=0;
  }
 }
}
//********************************Delay sub-function************************************
void delay1ms(int x)
{
    int i,j;
    for(i=x;i>0;i--)
    for(j=120;j>0;j--);
}

Reference address：51 MCU C programming (VIII. DC motor relay control forward and reverse rotation)

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