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Thread: E_EEPROM_XMC4 protect memory from being over-written during flash programming

  1. #1
    Intermediate Intermediate phab is on a distinguished road
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    E_EEPROM_XMC4 protect memory from being over-written during flash programming

    Hi all,

    I am planning to use the E_EEPROM_XMC4 App to store a non volatile variable in FLASH memory. The variable will be written once in the product lifetime (it is a license key)

    Is it possible to protect the variable from being over-written while updating the firmware via flash programming when using a a programming tool like XMC-Link / XMCFlasher or Mini-Wiggler / DAVE IDE

    In other words how do I locate the variable in a location that flash programming won't reach.

    Thank you in advance
    PHAB

  2. #2

    Infineon Employee
    Infineon Employee
    jferreira will become famous soon enough
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    Oct 2012
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    Hi,

    You can use the write protection feature of the FLASH sectors.
    See Flash Protection in the reference manual and the related XMCLib functions in xmc4_flash.h

    Regards,
    Jesus
    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

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