#include <avr/sleep.h>
#include <avr/io.h>


typedef struct PORT2_struct
{
    register8_t DIR;  /* Data Direction */
    register8_t DIRSET;  /* Data Direction Set */
    register8_t DIRCLR;  /* Data Direction Clear */
    register8_t DIRTGL;  /* Data Direction Toggle */
    register8_t OUT;  /* Output Value */
    register8_t OUTSET;  /* Output Value Set */
    register8_t OUTCLR;  /* Output Value Clear */
    register8_t OUTTGL;  /* Output Value Toggle */
    register8_t IN;  /* Input Value */
    register8_t INTFLAGS;  /* Interrupt Flags */
    register8_t PORTCTRL;  /* Port Control */
    register8_t reserved_1[5];
    register8_t PINCTRL[8];  /* Pin 0-7 Control */
    register8_t reserved_2[8];
} PORT2_t;
#define PORT2A                (*(PORT2_t *) 0x0400) /* I/O Ports */

void configureport1(void *port)
{
	uint8_t *ptr = port + 8;
	ptr = 0x01;
}


void configureport2(PORT_t port)
{
	port.PIN0CTRL = 0x01;
}
void configureport3(PORT2_t port)
{
	port.PINCTRL[0] = 0x01;
	port.PINCTRL[1] = 0x01;
	port.PINCTRL[2] = 0x01;
}
void setup()
{
	Serial.begin(115200);
	pinMode(13, OUTPUT);
	PORTA_PIN0CTRL = 0x00;
	configureport1(PORTA_DIR );
	configureport2(PORTA);
	configureport3(PORT2A);
}

void loop()
{
	Serial.println("Hello World");
	digitalWrite(13, HIGH);
    delay(100);
    digitalWrite(13, LOW);
	delay(100);
	noInterrupts();
   	sleep_enable();
    sleep_cpu();
}