Kendali kecepatan motor dc dengan PWM menggunakan program cvavr

Mengatur kecepatan motor dc dapat dilakukan dengan berbagai cara, salah satunya yaitu dengan menggunakan program. Disini saya akan langsung memberikan langkah-langkah untuk mengatur kecepatan motor dc menggunakan program. Program yang digunakan adalah code vision avr. Berikut ini langkah-langkahnya beserta simulasinya menggunkan ISIS Professional.

1. Buka CVavr lalu ikuti langkah-langkah berikut

 

PORTD sebagai output ( lihat gambar )

2. Buka aplikasi ISIS Professional lalu rangkai seperti dibawah ini.

Komponen yang digunakan adalah driver motor LM298, motor dan ic at8535

3. Program

/*****************************************************

This program was produced by the

CodeWizardAVR V2.05.0 Professional

Automatic Program Generator

© Copyright 1998-2010 Pavel Haiduc, HP InfoTech s.r.l.

http://www.hpinfotech.com

Project : 

Version : 

Date    : 2/10/2013

Author  : 

Company : 

Comments: 

Chip type               : ATmega8535

Program type            : Application

AVR Core Clock frequency: 11.059200 MHz

Memory model            : Small

External RAM size       : 0

Data Stack size         : 128

*****************************************************/

#include <mega8535.h>

#include <delay.h>

unsigned char xcount,lpwm,rpwm ;

// Timer 0 overflow interrupt service routine

interrupt [TIM0_OVF] void timer0_ovf_isr(void)

{

// Place your code here

xcount++;

if (xcount <= lpwm){PORTD.4=1;}

else {PORTD.4=0;}

if (xcount <= rpwm){PORTD.5=1;}

else {PORTD.5=0;}

TCNT0 = 0XFF;

}

// Declare your global variables here

void maju ()

{

lpwm=150;rpwm=150;

PORTD.2=1 ;PORTD.3=0 ;

PORTD.6=1 ;PORTD.7=0 ; 

} 

void kiri ()

{

lpwm=150;rpwm=200;

PORTD.2=1 ;PORTD.3=0 ;

PORTD.6=1 ;PORTD.7=0 ;

}

void kanan ()

{

lpwm=200;rpwm=150;

PORTD.2=1 ;PORTD.3=0 ;

PORTD.6=1 ;PORTD.7=0 ; 

}

void berhenti()

{

PORTD=0x00;

}

void main(void)

{

// Declare your local variables here

// Input/Output Ports initialization

// Port A initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 

// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 

PORTA=0x00;

DDRA=0x00;

// Port B initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 

// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 

PORTB=0x00;

DDRB=0x00;

// Port C initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 

// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 

PORTC=0xFF;

DDRC=0xFF;

// Port D initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 

// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 

PORTD=0x00;

DDRD=0xFF;

// Timer/Counter 0 initialization

// Clock source: System Clock

// Clock value: 11059.200 kHz

// Mode: Normal top=0xFF

// OC0 output: Disconnected

TCCR0=0x01;

TCNT0=0x00;

OCR0=0x00;

// Timer/Counter 1 initialization

// Clock source: System Clock

// Clock value: Timer1 Stopped

// Mode: Normal top=0xFFFF

// OC1A output: Discon.

// OC1B output: Discon.

// 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=0x00;

TCCR1B=0x00;

TCNT1H=0x00;

TCNT1L=0x00;

ICR1H=0x00;

ICR1L=0x00;

OCR1AH=0x00;

OCR1AL=0x00;

OCR1BH=0x00;

OCR1BL=0x00;

// Timer/Counter 2 initialization

// Clock source: System Clock

// Clock value: Timer2 Stopped

// Mode: Normal top=0xFF

// OC2 output: Disconnected

ASSR=0x00;

TCCR2=0x00;

TCNT2=0x00;

OCR2=0x00;

// External Interrupt(s) initialization

// INT0: Off

// INT1: Off

// INT2: Off

MCUCR=0x00;

MCUCSR=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization

TIMSK=0x01;

// USART initialization

// USART disabled

UCSRB=0x00;

// Analog Comparator initialization

// Analog Comparator: Off

// Analog Comparator Input Capture by Timer/Counter 1: Off

ACSR=0x80;

SFIOR=0x00;

// ADC initialization

// ADC disabled

ADCSRA=0x00;

// SPI initialization

// SPI disabled

SPCR=0x00;

// TWI initialization

// TWI disabled

TWCR=0x00;

// Global enable interrupts

#asm("sei")

while (1)

      {

      // Place your code here     

 maju();

delay_ms(500);

kiri();

delay_ms(500);

kanan();

delay_ms(500);

berhenti ();

                     

      }    

}