Motor dan PWM

TUTORIAL JEMBATAN H-BRIDGE

1. Buatlah rangkaian seperti dibawah ini :

2. kemudian masukan program berikut :

#include <mega32.h>;

#include <delay.h>;

void motor(intdir, unsigned char pwm) {

if (pwm==0) {  // AUTO BREAK PROGRAM !!

PORTD.0=0;

OCR1A=0;

}

else {

if(dir==0) {

PORTD.0=0;

OCR1A=pwm;  // YANG DIATUR LEBAR PULSA POSITIF

}

else{

PORTD.0=1;

OCR1A=255-pwm; // YANG DIATUR LEBAR PULSA NEGATIF

}

}

}

void main(void)

{

// Timer/Counter 1 initialization

// Clock source: System Clock

// Clock value: 15.625 kHz

// Mode: Ph. correct PWM top=0x00FF

// OC1A output: Non-Inv.

// OC1B output: Non-Inv.

// Noise Canceler: Off

// Input Capture on Falling Edge

// Timer1 Overflow Interrupt: Off

// Input Capture Interrupt: Off

// Compare A Match Interrupt: Off

// Compare B Match Interrupt: Off

TCCR1A=0xA1;

TCCR1B=0x05;

TCNT1H=0x00;

TCNT1L=0x00;

ICR1H=0x00;

ICR1L=0x00;

OCR1AH=0x00;

OCR1AL=0x00;

OCR1BH=0x00;

OCR1BL=0x00;

while (1)

{

// Place your code here

motor(0,255);

delay_ms(50);

motor(0,250);

delay_ms(50);

motor(1,250);

delay_ms(50);

motor(1,250);

delay_ms(50);

}

}