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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
    Join Date
    Oct 2017

    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

  2. #2

    Infineon Employee
    Infineon Employee
    jferreira will become famous soon enough
    Join Date
    Oct 2012

    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

    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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