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Original question:

Compiler/TMS320F28379D: Emulated EEPROM from flash

Compiler/TMS320F28379D: EEPROM Emulation -TMS320F28379D

Ajay S
Expert 1280 points
Part Number: TMS320F28379D
Other Parts Discussed in Thread: C2000WARE

Tool/software: TI C/C++ Compiler

Hi,

  Is this possible to write on EEPROM emulation flash sector every 5sec once while code is  running from flash memory?  when I am referring " e2e.ti.com/.../319481" thread in that mentioned "Note that on F2808, you cannot erase or write to the flash while executing code from flash.  It is also typically very difficult if not impossible to keep your main application running in realtime when operating on the flash since the flash APIs are not interruptible.

Thanks&Regards,

Rani 

  • 0
    TI__Guru* 87105 points

    Rani,

    Writing every 5s is not a problem.  Also, flash API is interruptible in this device.  However, there should not be any flash read/fetch access when the bank is going through flash erase/program operations by executing flash API from RAM.  This means all of the code/data (including any ISRs) that you want to execute/read when flash erase/program is in progress must be executed from RAM (copy ISRs to RAM and execute from RAM).

    Thanks and regards,

    Vamsi 

  • 0 in reply to Vamsi Gudivada
    Intellectual 450 points

    Vamsi,

     Thanks for the support .

    Thanks & regards,

    Rani

  • 0 in reply to Rani Loganthan
    Intellectual 450 points

    vamsi,

        When  i am referring f28xx eeprom emulation project it has these two function copy the data from Flash  to RAM.

         MemCopy(&RamfuncsLoadStart, &RamfuncsLoadEnd, &RamfuncsRunStart);
        MemCopy(&Flash28_API_LoadStart, &Flash28_API_LoadEnd, &Flash28_API_RunStart);

        My question is function arguments are "user defined or  keywords" .

     

    Thanks &Regards,

    Rani

  • 0 in reply to Rani Loganthan
    TI__Guru* 87105 points

    Rani,

    Ramfuncs variables can be treated as keywords.  You can see the Ramfuncs variables declared extern in C2000Ware_3_03_00_00\device_support\f2838x\common\include\device.h

    Flash28_API ones are user defined.

    Please open a new post for further questions. I will not be available next week and may not be able to monitor this thread.  If you open a new post, our team will assign it to an available expert.

    Thanks and regards,

    Vamsi

  • 0 in reply to Vamsi Gudivada
    Expert 1280 points

    Vamsi,

        sure i will open a new one. Thanks for the support .

    Thanks &Regards,

    Rani