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jlats2's avatar
jlats2
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4 years ago
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Loading FPGA from Flash

Hello, Thank you for taking time to read my post. I am working with a Cyclone 10 GX using micron MT25QU01G flash memory. I am able to generate a programming file (.JIC) and load the flash memor...
  • jlats2's avatar
    4 years ago

    Thank you for your help. I certainly will need the 'remote update ip' as this will help me reconfigure the fpga without power cycling the entire board. Thank you for sharing.

    It turns out that there is a difference between EPCS and EPCQ flash memories . EPCS can accept the hexout file which is produced during compilation. However, the EPCQ will not work with the hexout directly loaded to flash (bug with quartus?).

    The work around is to generate a JIC file, and while doing this, check the box for generating a .RPD file. This .RPD will need to be loaded to flash and will work for EPCQ. The .RPD is not in an 'intel hex' format. Fortunately, there is a python project which allows one to convert from the RPD to what we will call a 'hexout' format (shown below for future readers):

    <<< python code >>>

    from intelhex import IntelHex
    ih = IntelHex()
    ih.loadbin(filename)
    ih.write_hex_file('test.hex',byte_count=128)

    <<<end python code>>>

    I am not sure why the hexout file varies from the rpd, maybe someone from intel can comment?

    Best Regards