/*
 * Lab 6 - Servo Control student program template
 *
 * This program will how to use the keyboard connected to a PC
 * running HyperTerminal can communicate with the ATmega16 on the STK500
 * to manipulate the position of a servo.
 *
 * Last modified 2010-10-04 20:50 (ebw)
 */

#include <avr/io.h>

/*
 * These are function prototypes for the functions that are defined below.
 * They are needed because C doesn't allow you to call functions before
 * they are declared or defined.  Otherwise it doesn't know what the
 * parameter and return value types are for called functions when they're
 * used.
 *
 * Add your own code to servo_left(), servo_right(), and
 * servo_center() in the function definitions at the end of the file.
 */
void servo_left();     // Turns the servo all the way to the left.
void servo_center();   // Turns the servo to its center position.
void servo_right();    // Turns the servo all the way to the right.

/*
 * This initialization function sets-up Timer0 for:
 *  - phase Correct PWM
 *  - clearing OC0 on up-count
 *  - prescaled by 256
 * and remembering to enable the output pin (PB3) driven by the timer.
 *
 * It also configures the bottom two pins on PORTC for LED output.
 */
void init()
{
    TCCR0 = _BV(WGM00) | _BV(COM01) | _BV(CS02);
												
    DDRB  = _BV(PB3);
    DDRC  = _BV(0) | _BV(1);
}



int main()
{
    init();

    while (1)
    {
        /* FIXME: INSERT YOUR OWN CODE HERE 
           USE TEST STATEMENTS TO TEST WHICH SWITCH BUTTON WAS PRESSED
           UTILIZE YOUR servo_left(), servo_right(), servo_center() FUNCTIONS 
        */
    }

    return 0;
}


/*
 * Student-provided helper functions for driving the servo.
 *
 * FIXME: Add your code to the servo_xxx() functions below.
 * You shouldn't have to make any changes to init().
 */
void servo_left()
{

}

void servo_center()
{

}

void servo_right()
{

}