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Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

safe mode program

I wish to have a safe mode boot

this means that usually the program that is found on the flash will be loaded and run

but if something happen and the application hang I wish to press a button and the Nios will

moved to execute some safe mode program(like downloading a new software) how can I do it?

I also wish that the safe mode program won't be a part of the program that is usually run from the flash (i wish to download them to the HW in to different occasions).

I can't place the configuration(.sof) on the flash (I can do it only on the epcs). and so I can't do the same thing as altera did with the evaluation board

I was thinking of some kind of interrupt that will be called on a button press

but the problem how do I separate it from the main program , where can I store it and how can I make it run in parallel

to the main program

2 Replies

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

    So, your custom board has no flash or no config-controller(such as CPLD)? I implement such idea like the Altera NDK.

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

    hi

    you can program the flash with your own factory configuration(overwriting the default one that comes with the dev board) using the nios-flash-programmer . then you can search for and transfer control to a new application image using the remote update block

    regards