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Altera_Forum's avatar
Altera_Forum
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12 years ago

need help in c code for communication between Nios ii processor and custom component.

hi , i am done with my qsys design . now i want to move to the next steps. i wan to send data from my nios II processor to the custom Component ( encoder) , i created. can any one suggest me any ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

ho about

///////////////////////// c code (^v^ )/////////////////////////////////////////

# include <io.h>

# include <system.h>

.....

short pio_button;

pio_button = IORD_16DIRECT(PIO_BUTTON_BASE,0);

IOWR_16DIRECT(PIO_LED_BASE,0,pio_button);

///////////////////////////////////////////////////////////////////////////////////

IORD_16DIRECT is reading register from address of PIO_BUTTON_BASE

IOWR_16DIRECT is writing data to PIO_LED_BASE

those base addresses are written in <system.h>

serch IOWR_*DIRECT functions