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Cortex-M3 Flash Patch

citykid1
Note: This was originally posted on 9th December 2009 at http://forums.arm.com

I have been working with Keil uVision 4 and have been trying to figure out how to use the Cortex-M3 "Flash Patch" feature to map a contstant value to RAM.    I can't seem to find any information on how to do that.   

There are all sorts of press releases describing the FPB unit and its features but how do you access the flash patch feature from within Keil uVision?

Anyone had any luck with this feature?
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  • Note: This was originally posted on 10th December 2009 at http://forums.arm.com

    Anyone had any luck with this feature?

    Yes. Besides having to program the appropriate FPB registers you'll also have to think of how to set up an appropriate infrastructure in your application. How does the application know whether or not to enable the FPB after reset, etc. Perhaps if you'd provide more more information about what you are trying to do, I could give you some hints.

    There is no difference here between Keil and any other tool chain.

    Regards
    Marcus
Reply
  • Note: This was originally posted on 10th December 2009 at http://forums.arm.com

    Anyone had any luck with this feature?

    Yes. Besides having to program the appropriate FPB registers you'll also have to think of how to set up an appropriate infrastructure in your application. How does the application know whether or not to enable the FPB after reset, etc. Perhaps if you'd provide more more information about what you are trying to do, I could give you some hints.

    There is no difference here between Keil and any other tool chain.

    Regards
    Marcus
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