Forum Discussion

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

IRQ not working

Hello i have a DE2-115, i am trying to generate an IRQ from a button press. I've mapped the button in the pin planner, connected to the system template instance generated by QSys and my software h...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I've done volatile int legal declarating and i've changed my isr function to reset the register as shown below 

static void handle_mutex_interrupts(void* context, alt_u32 id)
{
      volatile int* edge_capture_ptr = (volatile int*) context;
      /* Store the value in the Button's edge capture register in *context. */
      *edge_capture_ptr = IORD_ALTERA_AVALON_PIO_EDGE_CAP(INPUT_IRQ_BASE);
      // Reset the Buttons edge capture register.
      IOWR_ALTERA_AVALON_PIO_EDGE_CAP(INPUT_IRQ_BASE, 0);
      legal = 1;
}

Still nothing.