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praveenkumar's avatar
praveenkumar
Icon for Occasional Contributor rankOccasional Contributor
4 years ago

cfi flash using nios 2 flash programmer

i , i am trying to boot the cfi flash .

but first i want to debug whether it is working prperly or not .

i cannected genric tri state controller and conduit bridge and assigned pins in pin planner .and compiled.

now i want to write and read from cfi flash .

in nios ii sbt tool i write the code for reading the cfi flash and for also writing.

but jtag is not detecting . how is it possible can anyone help me.

please reply for my message

4 Replies

  • BoonBengT_Altera's avatar
    BoonBengT_Altera
    Icon for Moderator rankModerator
    4 years ago


    Hi @praveenkumar,

    Thank you for posting in Intel community forum, hope this message find you well and apologies for the delayed in response.
    Would suggest to check on a few things 1) Check if the JTAG UART IP being added to the design 2) Board are connected to the PC and with the proper cable and driver installed (assume you are using Windows environment) 3) Check if the JTAG pin are connected correctly based on the board datasheet.
    If possible please do share a screenshot on where the mention jtag error occurred.

    Best Wishes
    BB

  • BoonBengT_Altera's avatar
    BoonBengT_Altera
    Icon for Moderator rankModerator
    4 years ago

    Hi @praveenkumar,

    Just to add on, as mention in the other post on the board used which is cyclone ii.

    You may refer to the following guide here for further details on how to configure the JTAG.

    Please do let us know if that helps.

    Best Wishes

    BB

    • praveenkumar's avatar
      praveenkumar
      Icon for Occasional Contributor rankOccasional Contributor
      4 years ago

      now jtag is detecting. but the problem is i am using micron nor flash . i connected the generic tri state controller and conduit bridge .i am reading the flash locations with the cfi drivers . it showing thedata oxffff from locations.

      In nios ii command shell i used the nios2-flash-programmer --debug base address

      it shows flash is empty cannot perform read or erase opearations on empty flash.

      what does it mean ?i already stored programm in flash using PFL in altera throug quartus programmer by programming the .pof file . but it says it is empty. i dont understand .can u help me with this.

    • praveenkumar's avatar
      praveenkumar
      Icon for Occasional Contributor rankOccasional Contributor
      4 years ago

      As in below attached flow file i am getting an error like no cfi table found . i am using p33 micron nor flash rc 64 ball bga package .

      i used tristate controller and tristate bridge .also have another doubt for this flash using dclk . we are clock for giving tristate controller . both clocks must be same or different or tristate controller clock will be sufficient for accesing the nor flash