void setmatrix() {
	matrix[0][0].pos[GREEN] = PA0;
	matrix[0][0].port[GREEN] = &PORTA;
	matrix[0][0].pos[RED] = PA1;
	matrix[0][0].port[RED] = &PORTA;

	matrix[0][1].pos[GREEN] = PA2;
	matrix[0][1].port[GREEN] = &PORTA;
	matrix[0][1].pos[RED] = PA3;
	matrix[0][1].port[RED] = &PORTA;

	matrix[0][2].pos[GREEN] = PA4;
	matrix[0][2].port[GREEN] = &PORTA;
	matrix[0][2].pos[RED] = PA5;
	matrix[0][2].port[RED] = &PORTA;

	matrix[1][0].pos[GREEN] = PA6;
	matrix[1][0].port[GREEN] = &PORTA;
	matrix[1][0].pos[RED] = PA7;
	matrix[1][0].port[RED] = &PORTA;

	matrix[1][1].pos[GREEN] = PC7;
	matrix[1][1].port[GREEN] = &PORTC;
	matrix[1][1].pos[RED] = PC6;
	matrix[1][1].port[RED] = &PORTC;

	matrix[1][2].pos[GREEN] = PC5;
	matrix[1][2].port[GREEN] = &PORTC;
	matrix[1][2].pos[RED] = PC4;
	matrix[1][2].port[RED] = &PORTC;

	matrix[2][0].pos[GREEN] = PC3;
	matrix[2][0].port[GREEN] = &PORTC;
	matrix[2][0].pos[RED] = PC2;
	matrix[2][0].port[RED] = &PORTC;

	matrix[2][1].pos[GREEN] = PC1;
	matrix[2][1].port[GREEN] = &PORTC;
	matrix[2][1].pos[RED] = PD0;
	matrix[2][1].port[RED] = &PORTD;

	matrix[2][2].pos[GREEN] = PD2;
	matrix[2][2].port[GREEN] = &PORTD;
	matrix[2][2].pos[RED] = PD1;
	matrix[2][2].port[RED] = &PORTD;
}