de0-nano board / Nios2 troublemaker

Hello Galfoz,

I ve checked that already. In QSYS the PIO was added as an output (8 bits width) and renamed as "led_pio". That entry can be found in "system.h". Here is a cutout.

system.h

------------------------------------------------

# define ALT_MODULE_CLASS_led_pio altera_avalon_pio

# define LED_PIO_BASE 0x21020

# define LED_PIO_BIT_CLEARING_EDGE_REGISTER 0

# define LED_PIO_BIT_MODIFYING_OUTPUT_REGISTER 0

# define LED_PIO_CAPTURE 0

# define LED_PIO_DATA_WIDTH 8

# define LED_PIO_DO_TEST_BENCH_WIRING 0

# define LED_PIO_DRIVEN_SIM_VALUE 0

# define LED_PIO_EDGE_TYPE "NONE"

# define LED_PIO_FREQ 50000000

# define LED_PIO_HAS_IN 0

# define LED_PIO_HAS_OUT 1

# define LED_PIO_HAS_TRI 0

# define LED_PIO_IRQ -1

# define LED_PIO_IRQ_INTERRUPT_CONTROLLER_ID -1

# define LED_PIO_IRQ_TYPE "NONE"

# define LED_PIO_NAME "/dev/led_pio"

# define LED_PIO_RESET_VALUE 0

# define LED_PIO_SPAN 16

# define LED_PIO_TYPE "altera_avalon_pio"

-----------------------------------------------------

The name "led_pio" is fitting with the entry generated in the system.h. Case sensitivity does not seem to be considered cos nothing happened when i changed the function s argument which is called in the main(). Even putting the adress_base itself results into an error.

Moreover there s only one warning in QSYS.

-------------------------------------------------------

Warning: nios_system.cpu: Nios II Classic cores are now superseded by improved Gen 2 cores.

-------------------------------------------------------