TM4C123GH6PM: Can I use the ICDI interface from a EK-LM4F120XL Launchpad with this microcontroller?

Vitor Boschi

Part Number: TM4C123GH6PM
Other Parts Discussed in Thread: UNIFLASH, SEGGER

I have the launchpad specified in the title and a custom board using the TM4C123GH6PM, and would like to debug it using the ICDI/JTAG interface of the launchpad, but I couldn't make it work.

I tried simple actions, like checking the flash memory and reading user registers using LMFlash and UniFlash, but the only thing I could do was running the unlock sequence.

Is this setup supported, or I really need another hardware to debug the TM4C123GH6PM?

Thanks

over 6 years ago

0 Charles Tsai over 6 years ago

TI__Guru**** 159385 points

Hi Vitor,

You can use the TM4C launchpad as a debug probe to debug your custom board. Please refer to this app note.

0 Vitor Boschi over 6 years ago in reply to Charles Tsai

Prodigy 20 points

I saw that document, but nowhere it mentions the EK-LM4F120XL board.

0 Robert Adsett over 6 years ago in reply to Vitor Boschi

Guru 27665 points

Victor, if you've moved beyond the Launchpad then your best solution is to buy a proper JTAG adapter. It doesn't take very much time spent cobbling together random pieces to cost as much as a proper adapter.

Robert

0 cb1_mobile over 6 years ago in reply to Robert Adsett

Guru 117850 points

Very true - that. ("cobble job will come close to a proper one in cost")

Yet - perhaps of even more importance - will that "cobble" hold-up - perform robustly - and last long enough so that you may complete your development?

You'd do well to consider a "real" JTAG/SWD Pod (J-Link) available via "educational discount" from Segger. (which is not "crippled" as are those here - & confined to "one & only one" vendor's devices.")

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TM4C123GH6PM: Can I use the ICDI interface from a EK-LM4F120XL Launchpad with this microcontroller?