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andy25's avatar
andy25
Icon for Occasional Contributor rankOccasional Contributor
2 years ago
Solved

altera_avalon_fifo_write_ienable IE_ALMOSTFULL

Hi all.

In my Nios V code, I'm trying to use:
status = altera_avalon_fifo_write_ienable(IPMB_0_FIFO_IN_CSR_BASE, IE_FULL | IE_ALMOSTFULL);

I'm guessing the IE_FULL and IE_ALMOSTFULL are the masks I want, but they don't seem to be defined anywhere.

E_FULL and E_ALMOSTFULL are also not defined.

Am I missing a header? Or is this just a constant I create for myself?

Thanks

-Andy

Nios Cpu
  • andy25's avatar
    andy25
    2 years ago

    No, you don't understand.

    I obviously read the documentation and that's where I got the names IE_FULL, etc.

    Then I wrote some C code:

    status = altera_avalon_fifo_write_ienable(IPMB_0_FIFO_IN_CSR_BASE, IE_FULL | IE_ALMOSTFULL);

    And tried to compile it, and it errors saying IE_FULL (and friends) are not defined.

    grepping the hal_bsp directory reveals those names are not defined anywhere.

    But that was 5 days ago.

    The correct answer is:

    #include "altera_avalon_fifo_regs.h"

    Use:

    ALTERA_AVALON_FIFO_IENABLE_F_MSK

    ALTERA_AVALON_FIFO_IENABLE_AF_MSK

    etc.

    But the real real correct answer is:

    You cant call altera_avalon_fifo_write_ienable() function after altera_avalon_fifo_init(). Instead, pass the ienable flags you want as the second parameter of altera_avalon_fifo_init().

    -Andy

3 Replies

    • andy25's avatar
      andy25
      Icon for Occasional Contributor rankOccasional Contributor
      2 years ago

      No, you don't understand.

      I obviously read the documentation and that's where I got the names IE_FULL, etc.

      Then I wrote some C code:

      status = altera_avalon_fifo_write_ienable(IPMB_0_FIFO_IN_CSR_BASE, IE_FULL | IE_ALMOSTFULL);

      And tried to compile it, and it errors saying IE_FULL (and friends) are not defined.

      grepping the hal_bsp directory reveals those names are not defined anywhere.

      But that was 5 days ago.

      The correct answer is:

      #include "altera_avalon_fifo_regs.h"

      Use:

      ALTERA_AVALON_FIFO_IENABLE_F_MSK

      ALTERA_AVALON_FIFO_IENABLE_AF_MSK

      etc.

      But the real real correct answer is:

      You cant call altera_avalon_fifo_write_ienable() function after altera_avalon_fifo_init(). Instead, pass the ienable flags you want as the second parameter of altera_avalon_fifo_init().

      -Andy

  • EBERLAZARE_I_Intel's avatar
    EBERLAZARE_I_Intel
    Icon for Regular Contributor rankRegular Contributor
    2 years ago

    Hi Andy,


    My apologies, yes you are right, so it should be define as you mentioned, below in the "include" tab:

    https://www.intel.com/content/www/us/en/docs/programmable/683130/23-4/altera-avalon-fifo-write-ienable.html


    You could also use RiscFree if you like to check the current defined variables values by setting breakpoints and see the debug/registers/modules tab etc.:

    https://www.intel.com/content/www/us/en/docs/programmable/730783/23-4/debug-setup-for-processor-system.html


    If you have a new question, Please login to ‘https://supporttickets.intel.com’, view details of the desire request, and post a feed/response within the next 15 days to allow me to continue to support you. After 15 days, this thread will be transitioned to community support. The community users will be able to help you on your follow-up questions.



    p/s: If any answer from the community or Intel Support are helpful, please feel free to give best answer or rate 4/5 survey.