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RShal4's avatar
RShal4
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

Interrupt from FPGA received only one time !

Hello, I am struggling with interrupt from fpga. I am using gpio from DE-10 nano board (KEY0), which is routed to f2h_irq1. On clicking the button I receive interrupt from the 1st time, but trying...
  • RShal4's avatar
    RShal4
    Icon for Occasional Contributor rankOccasional Contributor
    6 years ago

    The issue been solved.

    For anyone with similar problem try the following:

    1. check which type of interrupt is used level or edge in the pio (check in qsys), if it's edge, the HPS GIC should handle it as edge !
    2. it is required to clear edge interrupt in PIO, by writing into PIO edge "edgecapture" (edge detection bit)
    3. It is also required to be sure that writing the PIO works, i.e. required first to enable LWH2F , and best to check in memory view that the registers are read/written correctly (without enabling the bridge it won't do anything)
    4. if all above does not work, better to verify with signaltap what happens in irq signal.

    Thanks