typedef volatile struct {
	unsigned int moder;
	unsigned short otyper;
	unsigned short otyperRes;
	unsigned int ospeedr;
	unsigned int pupdr;
	unsigned char idrL;
	unsigned char idrH;
	unsigned short idrRes;
	unsigned char odrL;
	unsigned char odrH;
	unsigned short odrRes;
	unsigned int bsrr;
	unsigned int lckr;
	unsigned int afrl;
	unsigned int afrh;
} GPIO, *PGPIO;