Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

how call function on hardware exceptions

Hey expert guys!

How can i set my fuction for pointer of functions (alt_irq[i]) ?

Again, i just need that my function execute when exeption are true.

I have a hardware interruption connected on my system address 1.

I need rewrite alt_irq_handler(void) function ?

Thanks.

This forum is very good!

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    if anyone interested. now i'm trying with alt_irq_register(...) function of HAL library.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    Look at the "Count Binary" example, shipped with the Nios II Kit installation.

    - slacker
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    20 years ago

    Hey guys now i have good news. Interruptions are working here!

    I make a single exemple for help others guys:

    /********************************************************/

    My context: I have 1 IRQ on my system. IRQ N.º 1.

    /********************************************************/# include <stdio.h># include <sys/alt_irq.h>

    /********************************************************/

    int main(){

    alt_u32 id = 1;

    volatile int button=1;

    printf("start:\n");

    alt_irq_register( id, (void*)&button, my_isr );

    while(1){

    if(button!=0){

    printf("exception runing...\n");

    button=0;

    }

    else

    printf("main runing... \n");

    }

    return 0;

    }

    /********************************************************/

    static void my_isr(void* context, alt_u32 id)

    {

    int* button = (int *)context;

    if( id == 1 ) //test interruption id

    *button = 1;

    else

    *button = 0;

    }

    /********************************************************/

    Slacker, thanks for exemple. Its help me too

    ^^