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    • Can't flash STM32L476

    Posted by tarek bouchkati on 2016-02-17 11:10 Tunisia

    Hello Håkan, Romain,

    Håkan,
    >> NRST seem to be connected correctly
    OK, to confirm that using ST-Link Utilty > Menu (Target > Settings) : select Mode = Connect Under Reset & Reset Mode = Hardware Reset
    and check if that ST-Link Utility cann connect to your board.

    >> and I guess that pin is used by the "STM32 ST-LINK Utility" too witch successfully can flash the MCU.
    No, ST-Link Utility can connect to your device using different reset modes (selectable from Target > Settings):

    Connection ModePossible Reset Modes
    Connect Under ResetHardware Reset
    Normal(Software System / Core / Hardware) Reset
    HotplugNo Reset


    Romain
    >> I already had the same error because of a debug session not stopped...
    When a debug session is not stopped a different message appears saying that openOCD cannot connect to MCU, but in this case there is a reset timeout.

    Best Regards,
    Tarek

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