Forum Discussion

SKuma120's avatar
SKuma120
Icon for New Contributor rankNew Contributor
7 years ago
Solved

Interrupt processing not working

Hello , I am new to nios programming this can be a basic question. I have two external interrupts connected to external devices with different interrupt priorities one is 1 and other is 8 . Both th...
  • Ahmed_H_Intel1's avatar
    Ahmed_H_Intel1
    7 years ago
    Hi, Thanks for figuring out the mistake by yourself, in future I recommend you to use the VIC (Vectored Interrupt controller) IP. Regards.
Ahmed_H_Intel1's avatar
Ahmed_H_Intel1
Icon for Frequent Contributor rankFrequent Contributor
7 years ago
Hi, Why you give priorities 1 and 8, is there any other interrupts between?
  • SKuma120's avatar
    SKuma120
    Icon for New Contributor rankNew Contributor
    7 years ago

    Thanks for the reply.

    Yes, there are other interrupts in between. I tried changing the priorities to 1 & 2 but it did not help.

    Reading the interrupt register in debug mode, i observed an issue while reading the result from one of the interface clears other existing interrupts . So the second channel interrupt get cleared and isr is not serviced.

    I have to fix this now.