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kyeh's avatar
kyeh
Icon for New Contributor rankNew Contributor
1 year ago

Nios V juart-terminal Continuously Returns EOF with getchar();

Hello all, I am fairly new to working with FPGAs so please be gentle. We are utilizing the Cyclone 10 GX Development Kit and programmed the Nios V IP to act as our microprocessor. The µC/OS-II is b...
Nios Cpu
aikeu's avatar
aikeu
Icon for Regular Contributor rankRegular Contributor
1 year ago

Hi kyeh,


Any further up from the previous comment?


Thanks.

Regards,

Aik Eu


  • kyeh's avatar
    kyeh
    Icon for New Contributor rankNew Contributor
    1 year ago

    Hello aikeu,

    Thanks for checking back. I am currently investigating possible instability within the UART read_data lines. My concern currently seems to be the Avalon av_readdata bus. It fluctuates between "@5" (0x0040_3501) and "@" (0x0040_A401) in the background. Here I set signaltap to trigger when I enter "A". I do confirm on the RiscFree debugger that the device still returns EOF. I am currently unsure how this would return EOF but will look further into it.

    Thanks,

    kyeh