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Altera_Forum's avatar
Altera_Forum
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16 years ago

Flash programming "Auto Detect" failure

i am using the cyclone iii ep3c120 development kit. i can successfully program my .sof into the fpga directly via the usb blaster interface.

i followed the instructions in the development kit user guide (appendix a) to create a .pof file, and then to program the flash. at step 9 - "click auto detect" - no flash device is detected.

i should note that the very first time i tried to implement the design into flash, everything worked perfectly. now that i have updated the design, it does not.

can anyone suggest why this is the case?

thanks.

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    The user guide doesn't talk about programming your file, but the supplied example design. If your design doesn't include a PFL instance, no flash can be auto-detected. You are still able to attach the flash manually, but you need a PFL instance in the FPGA design to perform the flash programming.

  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    As far as I recall, one of the pre-programed(factory default) design in Flash does have PFL in it. I thought it was page 1 or 2...

    Or as Fvm mentioned, easiest way is just build PFL only design by yourself.

    Just instantiate PFL from Megacore, and hook up Flash pins to PFL.
  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    Or even more simple, load ready-to-use pfl_ep3c120.sof from quartus\common\devinfo\programmer folder.