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TM4C1294NCPDT: CCSv12.2 debug warm reset tries to halt CPU

Genatco
Guru 55913 points
Part Number: TM4C1294NCPDT

Hi all,

Testing the newer debug via TM4C1294 launch pad. Stellaris emulator incorrectly tries to halt the CPU on warm reset when all debug options are set not to halt only reset on program load. Hence on faulted CPU warm reset in debug users can't pause the emulator to check 'the reset cause register for the reason of the reset. The debug emulator monitor tab cycles red message "Unable to halt the target" and the pause button is greyed out after the faulting warm reset.

Any ideas why that may be occurring? What is the launch pads XDS debug probe, 110v1 or 100v2 or some other?

A bit baffled as Black Hawk XDS100v1 is unable to unlock the device and don't recall debug ever trying to update the firmware on it as does the TM4C launch pad emulator.

  • +1
    Guru 55913 points

    Tracked issue by replace file method to missing watchdog kick inside UART initialization code. Odd thing is the UART was functional but what did the Wdog have to do with Ethernet commands or flash memory writes baffles me.