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Altera_Forum's avatar
Altera_Forum
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11 years ago

Help with FPGA-HPS Interrupt on Baremetal Application

I have been working on baremetal application, generating interrupts in the FPGA to be handled by the HPS using the HWLib provided. The problem is, I have initialized everything as per the examples provided, but it seems that the GIC does not register the IRQ. I have my FPGA-HPS IRQs enabled in the Qsys project. So I am wondering what other settings I am missing, cause I thought this would just be a straight forward setup, and I will be processing the interrupts.

If there are examples relating to this I will be greatly appreciative.

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

    Try to check what is the interrupt number you are trying to catch.

    To make story short, this is the code:

    alt_int_dist_target_set(ALT_INT_INTERRUPT_F2S_FPGA_IRQ3, 0x1);

    alt_int_dist_trigger_set(ALT_INT_INTERRUPT_F2S_FPGA_IRQ3, ALT_INT_TRIGGER_EDGE);

    alt_int_dist_priority_set(ALT_INT_INTERRUPT_F2S_FPGA_IRQ3, 1);

    alt_int_dist_enable(ALT_INT_INTERRUPT_F2S_FPGA_IRQ3);

    alt_int_isr_register(ALT_INT_INTERRUPT_F2S_FPGA_IRQ3, my_isr_callback, NULL);