//INCLUDES

#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include "GPP.h"

//MAIN FUNCTION
int main()
{

    GPP *gpp = new GPP();

    //Turn on system power
    gpp->setPowerPin();
    gpp->screenOn();

    //Perform initialisation code
    gpp->SPI_Init();

    //Draw Logo on screen
    gpp->displayLogo();



    for( int i=0; i < 5*5 /*5 loops for each second, 5 seconds*/; i++ )
    {
        _delay_ms(200);
    }



    /* End Game Infinite Loop - Interrupts now run the show */
    while(1);

}

#ifndef GPOWERPACK_H
#define GPOWERPACK_H


//Defines...


//Pins
//#define RST_PIN       0b00000001
#define BUSY_PIN    0b00000010
#define DC_PIN      0b00001000
#define CS_PIN      0b00010000



//Includes...
#include <avr/io.h>
#include <avr/interrupt.h>
#include "ePaperLibrary/epdpaint.h"
#include "ePaperLibrary/fonts.h"
#include "BasicsLibrary/LinkedList.h"
#include "BasicsLibrary/dataBits.h"
#include "Waveshare.h"



class GPP
{
public:

    GPP();
    //~GPP();

    void setPowerPin();
    void screenOn();
    void SPI_Init();

    void SPI_SendNext();

    void displayLogo();


private:

    Waveshare screen;

};


#endif

//INCLUDES
#include "GPP.h"


//GLOBALS: INTERRUPTS AND VARIABLES
extern LinkedList<dataBits> SPI_DATA_BUFFER;


// SPI interrupt -> micro controller specific global function
ISR( SPIC_INT_vect )
{
    dataBits package = SPI_DATA_BUFFER.removeHead();
    unsigned char data = package.data;

    switch (package.context)
    {
    // SPI DC pin low --> Command
    case 0:
        PORTC.OUT &= ~DC_PIN;
        break;

    // SPI DC pin high --> Data
    case 1:
        PORTC.OUT |= DC_PIN;
        break;

    default:
        break;
    }




}



//PUBLIC FUNCTIONS

GPP::GPP()
{
    //Perform any setup here
    SPI_DATA_BUFFER = new LinkedList<dataBits>();
    Waveshare screen = new Waveshare( SPI_DATA_BUFFER, (unsigned char) RST_PIN, (unsigned char) DC_PIN,  (unsigned char) CS_PIN, (unsigned char) BUSY_PIN );
}



// Activate PD0: Connected to the gate of the MosFET
// that controls battery power delivered to the circuit
void GPP::setPowerPin()
{
    PORTD.DIR |= 0b00000001; //Pin0 output
    PORTD.OUT |= 0b00000001; //Pin0 High
}


...... and so on