c programming for Pin pio

Hello niceguylow,

the PIO Core is described in the Quartus II Development Software Handbook Volume 5: Embedded Peripherals (http://www.altera.com/literature/quartus2/lit-qts-peripherals.jsp). For accesing the PIO registers there are some macros which are included in “altera_avalon_pio_regs.h”:

#define IOADDR_ALTERA_AVALON_PIO_DATA(base)           __IO_CALC_ADDRESS_NATIVE(base, 0)# define IORD_ALTERA_AVALON_PIO_DATA(base)             IORD(base, 0) # define IOWR_ALTERA_AVALON_PIO_DATA(base, data)       IOWR(base, 0, data)
# define IOADDR_ALTERA_AVALON_PIO_DIRECTION(base)      __IO_CALC_ADDRESS_NATIVE(base, 1)# define IORD_ALTERA_AVALON_PIO_DIRECTION(base)        IORD(base, 1) # define IOWR_ALTERA_AVALON_PIO_DIRECTION(base, data)  IOWR(base, 1, data)
# define IOADDR_ALTERA_AVALON_PIO_IRQ_MASK(base)       __IO_CALC_ADDRESS_NATIVE(base, 2)# define IORD_ALTERA_AVALON_PIO_IRQ_MASK(base)         IORD(base, 2) # define IOWR_ALTERA_AVALON_PIO_IRQ_MASK(base, data)   IOWR(base, 2, data)
# define IOADDR_ALTERA_AVALON_PIO_EDGE_CAP(base)       __IO_CALC_ADDRESS_NATIVE(base, 3)# define IORD_ALTERA_AVALON_PIO_EDGE_CAP(base)         IORD(base, 3) # define IOWR_ALTERA_AVALON_PIO_EDGE_CAP(base, data)   IOWR(base, 3, data)

Regards,

niosIIuser