PIOA_WRITE
#define PIOA_WRITE(_reg, _val) do {*((volatile uint32_t *)(AT91RM9200_PIOA_BASE + (_reg))) = (_val);} while (0)
#define PIOA_WRITE(_reg, _val) do {*((volatile uint32_t *)(AT91SAM9260_PIOA_BASE + (_reg))) = (_val);} while (0)
#define PIOA_WRITE(_reg, _val) do {*((volatile uint32_t *)(AT91SAM9261_PIOA_BASE + (_reg))) = (_val);} while (0)