Question

Question 1.
With AVR ATmega16 microcontroller, a circuit has servomotor (PC0), a potentiometer and two LEDs. Write a program as:

• When turn the potentiometer’s knob to the right the servomotor will rotate clockwise and the first LED (PB0) will be on.
• When turn the potentiometer’s knob to the left the servomotor will rotate counterclockwise and the second LED (PB1) will be on..

Answer 1

#define F_CPU 1000000UL

#include<avr/io.h>

#include<util/delay.h>

void main()

{

//Configure TIMER1

TCCR1A|=(1<<COM1A1)|(1<<COM1B1)|(1<<WGM11); //NON Inverted PWM

TCCR1B|=(1<<WGM13)|(1<<WGM12)|(0<<CS11)|(1<<CS10); //PRESCALER=1 MODE 14(FAST PWM)

  

ICR1=19999; //fPWM=50Hz (Period = 20ms Standard).

DDRD|=(1<<PD4)|(1<<PD5); //PWM Pins as Out

  

while(1)

{

OCR1A=0; //0 degree

_delay_ms(1000);

OCR1A=600; //45 degree

_delay_ms(1000);

OCR1A=950; //90 degree

_delay_ms(1000);

OCR1A=1425; //135 degree

_delay_ms(1000);

OCR1A=1900; //180 degree

_delay_ms(1000);

OCR1A=1425; //135 degree

_delay_ms(1000);

OCR1A=950; //90 degree

_delay_ms(1000);

OCR1A=650; //45 degree

_delay_ms(1000);

}

}

but this is the interface of microcontroller and servomotor this shall help you a lot.