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AShiv
Novice
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DE0-Nano Interrupts/Kernel Issues

Hello,

 

As the title states, I am trying to get an interrupt signal from the FPGA->HPS. I know that I need to write a kernel driver module and register it to the interrupt, as well as updating the device tree based on the forum thread here: https://alterawiki.com/forum/showthread.php?t=41622&page=2. I was following along fairly well. However, I have been using the GHRD yocto linux image on the board thus far, and can't find the source for the kernel in order to compile modules against it. I found the rocketboards github and tried to use the 3.13 version, but when I compiled my code against it and tried to add the module to the board, I got:

fpga_uinput: version magic '3.13.0 SMP mod_unload ARMv7 p2v8 ' should be '3.13.0-00298-g3c7cbb9-dirty SMP mod_unload ARMv7 p2v8 ' Error: could not insert module fpga_uinput.ko: Invalid module format

So apparently that wasn't the correct version of the kernel. I then tried to just use the newest kernel on the rocketboards git. But after compiling it to the zImage it would always get hung-up when trying to boot the board but not always in the same spot. I'd appreciate any help thanks!

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