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Altera_Forum's avatar
Altera_Forum
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17 years ago

Weird Problem With MAX II Dev Kit

sometimes when I change my VHDL code.

my C# program that is meant to communicate with my DK cannot recognize it and I have no clue why :\

please advice.

are there pins im not suupose to use? or VHDL code that causes my MAXII to be unrecognizable?

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    How does your C# program communicate with the DK?

    Does the communication rely on some aspect of your design? Perhaps the changes you make in your VHDL are incorrect and causing the design and communication to fail.

    If you can post more details of your design and error then members of the forum may be able to offer advice.

    Good luck
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    Erm im sorry I wasn't very imformative. thanks for not shouting on me.

    I use the USB fifo that is built in the DK.

    normally when I enter my DK's USB to the correct USB hub. the windriver/driver I made using windriver design recognizes my device well.

    even when I put an empty VHDL design it regonizes the DK USB as 8 bit fifo and allows me to read/write to it.

    but sometimes when I add vhdl code windriver/mydriver fails to recognize the device at all. I have no clue what code changes cause the problem and it drives me mad.