#define PIO_OSR (AT91_CAST(AT91_REG *) 0x00000018) // (PIO_OSR) Output Status Register
#define PIO_IFER (AT91_CAST(AT91_REG *) 0x00000020) // (PIO_IFER) Input Filter Enable Register
#define PIO_IFDR (AT91_CAST(AT91_REG *) 0x00000024) // (PIO_IFDR) Input Filter Disable Register
#define PIO_OSR (AT91_CAST(AT91_REG *) 0x00000018) // (PIO_OSR) Output Status Register
#define PIO_IFER (AT91_CAST(AT91_REG *) 0x00000020) // (PIO_IFER) Input Filter Enable Register
#define PIO_IFDR (AT91_CAST(AT91_REG *) 0x00000024) // (PIO_IFDR) Input Filter Disable Register