[PIC] hi, i want help in my project using pic16f877A

[rooh]

hi ,, i musing pic16f877a,, for driving a
dc motor....... right lift farward back...
can any one help me to provide me asm code , hex file . and make file in proteus......plzzz

 

[jayanth.devarayanadurga]

What type of motor it is? DC bi-directional servo? You also need to control its speed? If yes, you need PWM and L293.

 

[wp100]

hi ,, i musing pic16f877a,, for driving a
dc motor....... right lift farward back...
can any one help me to provide me asm code , hex file . and make file in proteus......plzzz

Hi,

This tutorial will teach you how to drive a simple dc motor.
It refers to the 876 chip but that is the same as the 877a chip apart from its bigger memory and extra ports, just change the references of 876 to 877a.

http://www.winpicprog.co.uk/pic_tutorial8.htm


Just try proteus, select the chip and a motor, its not that hard to master, plenty of examples on ytube.

 

[SASSI Sam]

Hi Rooh, try this code with MikroC

void main() {
    short duty  = 0; //initial value for duty
  TRISC = 0x00; //PORTC as output
  TRISB = 0x00; //PORTB as output
  portb = 0x00; // init
  PWM1_Init(5000);  //Initialize PWM1
  PWM1_Start();  //start PWM1
  PWM1_Set_Duty(duty); //Set current duty for PWM1
  while (1)        // endless loop

  {
        PORTB = 0x01;  // 1st direction given through RB0
        Delay_ms(10);
        duty = 255;  //max duty
        PWM1_Set_Duty(duty);
        delay_ms(5000);
        PWM1_STOP();
        
        portb=0;
        delay_ms(5000); //wait until Motor stop before changing direction..
        
        PORTB = 0x02;  // 2nd direction given through RB1
        Delay_ms(10);
        duty = 255;  //max duty
        PWM1_Set_Duty(duty);
        delay_ms(5000); 
        PWM1_STOP();
  }
}

 

[SASSI Sam]

Hi, could some one helpe me pleaaase, how to use 2 buttons in portA to invert motor direction

 

[jayanth.devarayanadurga]

You need one button to change direction.

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void main(){
 
  unsigned char duty  = 0, toggle = 0, duty = 255;  //max duty; //initial value for duty
 
  TRISA = 0x01;
  PORTA = 0x00;
 
  TRISC = 0x00;
  PORTC = 0x00; 
  TRISB = 0x00; 
  PORTB = 0x00;
 
  CMCON = 0x07;
  //ADCON1 = ;  //Disable Analog inputs here 
 
  PWM1_Init(5000);  
  PWM1_Set_Duty(duty); 
  PWM1_Start();  
 
  while (1)        // endless loop
 
  {
    if(PORTA.F1){
        Delay_ms(50);
        if(PORTA.F1){
            toggle = ~toggle;
        }
    }
 
    if(!toggle){
        PORTB = 0x01;  // 1st direction given through RB0       
 
    }
    else if(toggle){
        PORTB = 0x02;  // 2nd direction given through RB1
            
    }        
  }
}

---

 

[SASSI Sam]

thank you so much jayanth.devarayanadurga