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TM4C123GH6PM: Couldn't initialize target device

Omar Farrag
Prodigy 45 points
Part Number: TM4C123GH6PM

My microcontroller was working just fine, and suddenly it stopped working. I can't download my code on the controller anymore, it keeps saying couldn't initialize target device. I used LM programmer to erase the entire flash and to unlock debug port, then it works but only for one time, I mean I can download the code one time and then it gets back to the same problem.

  • 0
    Guru 117855 points

    Would it not prove (more) useful for you to, "erase the entire flash - and unlock" - and then download (only) "known good" code - rather than "your code" - which likely impacts System Clock  and/all any of the MCU's JTAG/SWD pins?

    Either of those 2 "impacting code events" are the (usual suspects) when your situation results.      It is noted that, "Stopped Working" is often reported - almost (never) is, "Code Change which (caused) such stoppage" - presented...