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PMurp3's avatar
PMurp3
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6 years ago

Neither Nios2 or JTAG UART are showing up on JTAG using jtagconfig.

I have a design that instantiates a Nios2 Gen2 core with JTAG debug enabled and a JTAG UART. These are connected properly as far as I can tell. The UART appears in the system.h file, and the fit report shows that the JTAG hardware was included for both. However, when I use "jtagconfig -n", only the FPGA shows up. Neither the Nios debug interface or UART show up as nodes in the FPGA design. 

$ jtagconfig -n
1) USB-BlasterII [USB-1]
  4BA00477   SOCVHPS
  02D020DD   5CSEBA6(.|ES)/5CSEMA6/..

I cannot connect to Nios from Eclipse using the debugger and I cannot connect to the UART using nios2-terminal because they do not show up as nodes. I can, however download the sof using either the Quartus Programmer or nios2-configure-sof.

Am I supposed to somehow enable these JTAG features somewhere? Why don't they appear?

I am using the Cyclone V SoC Development Kit. Let me know if I need to provide more info.

Thanks,

Pete

5 Replies

  • Ahmed_H_Intel1's avatar
    Ahmed_H_Intel1
    Icon for Frequent Contributor rankFrequent Contributor
    6 years ago

    Hi Pete,

    Are you using the JTAG IP included into the Qsys design?

    Can you please share with me the Qsys design you have for NIOS II?

    Regards,

  • PMurp3's avatar
    PMurp3
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    6 years ago

    I replied to this via your email 3 days ago. Did you receive it?

  • Ahmed_H_Intel1's avatar
    Ahmed_H_Intel1
    Icon for Frequent Contributor rankFrequent Contributor
    6 years ago

    Hi Pete,

    I didn't receive any email from your side, Can you please reply here in the forums?

    Regards,

  • PMurp3's avatar
    PMurp3
    Icon for New Contributor rankNew Contributor
    6 years ago

    Attached is the .qsys subsystem file that encapsulates my Nios subsystem. I instantiate this in my top level qsys system. You won’t be able to build it because I use licensed CAN IP, but you can at least see the pertinent JTAG stuff.

  • Ahmed_H_Intel1's avatar
    Ahmed_H_Intel1
    Icon for Frequent Contributor rankFrequent Contributor
    6 years ago

    Hi,

    The .qsys looks ok. I am suspecting the system ID is not matching. Can you see the NIOS II processor via NIOS II SBT? it may give you an error showing that there is a mismatch in the system ID and there you can ignore it by checking the box of ignore system ID.

    Can you please check this?

    Regards,