#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
                    
/*Macros definition*/

#define BIT(x) (1 << (x))        //Set a particular bit mask
#define CHECKBIT(x,b) x&b        //Checks bit status
#define SETBIT(x,b) x|=b;        //Sets the particular bit
#define CLEARBIT(x,b) x&=~b;     //Sets the particular bit
#define TOGGLEBIT(x,b) x^=b;     //Toggles the particular bit

int main(void) {
    // DDR = Data Direction Register
    // Register Pins: 0 = input, 1 = output
    SETBIT(DDRA,BIT(7)) //Sets Direction of 7th pin of port A as output

    // Coding attempts
    // LOW is pressed button, HIGH is not pressed button
    // Clear just in case, I guess?
    CLEARBIT(DDRA,BIT(3)) //Sets direction of button as input

    while(1)
    {
        // Will just blink the LED
        /*SETBIT(PORTA,BIT(7)) //Sets PORTA7 as high i.e. turn on led
        _delay_ms(100);  
        CLEARBIT(PORTA,BIT(7))  //Clears PORTA7(PA7 pin goes low) i.e turn off led
        _delay_ms(100);*/

        // Turn on LED when button pressed
        if (CHECKBIT(PINA,BIT(3))) {
            CLEARBIT(PORTA,BIT(7))
        } else {
            SETBIT(PORTA,BIT(7))
        }
    }
    return 0;
}