Jlink pro reg not reset

  • I have an issue where Segger V7.98 isn't properly resetting the device registers on startup.

    Example, STM32L4P5 register PLLCFGR and TAMP settings don't automatically reset to default values.

    I'm using Crossworks 5.0.3? on win10 if it makes any difference here.

    In V7.98, every time I start a debug session this PLL value is wrong. So I have to start execution, then restart before the PLLCFGR value is at the reset value.

    In V7.68, this happens similarly except only the first time the device is powered up.

    I've been working with Crossworks on this, they have suggested I talk to Segger.

  • Does it also happen when issuing the reset via J-Link Commander?
    Use „r“ to reset
    Use „mem32 <Addr>“ to read the PLLCFGR

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