TMS570LC4357: Debug the code using external debugger of Tms570LC4357 Launchpad

Kanak yadav

Part Number: TMS570LC4357

Tool/software:

Dear TI Community,

I am attempting to debug code on my TMS570LC4357 LaunchPad using an external XDS110 debugger connected to the J18 header. I would appreciate it if someone could provide guidance on the necessary configurations on the LaunchPad side to enable this debugging setup.

Specifically, I am looking for information on:

Any jumpers that need to be moved or removed to isolate the onboard debugger and enable the external XDS110 via J18.
Any switches that need to be set for this configuration.
How to properly power the TMS570LC4357 MCU when using an external XDS110 debugger connected via J18. Should the LaunchPad still be powered via its micro-USB port, or is there an alternative power input to use in this scenario?
Any other hardware modifications or considerations for using an external debugger with J18.

Thank you in advance for your assistance.

Regards

Kanak

5 months ago

0 Peter Luong1 5 months ago

TI__Mastermind 19351 points

Hi Kanak,

This is quite an older LaunchPad and I couldn't locate a user's guide for it. From reviewing the schematic, the JTAG signals are routed directly from both the XDS110 and external XDS header, so there is no way to isolate the JTAG signals from the onboard debugger. From what I can tell, there is no switch or modification that needs to be made since there isn't a way to reroute the JTAG signals on the board

The preferred method for powering the board in this case is making use of the 5V barrel plug located next to the external JTAG header. You could also choose to power the 5V rail from the BoosterPack headers (5V pin) though it's not preferred.

Regards,

Peter

0 Kanak yadav 5 months ago in reply to Peter Luong1

Prodigy 60 points

Hii Peter ,

can you share the connection diagram for 5v actually i have tried but its not working.

Regards,

Kanak

0 Peter Luong1 5 months ago in reply to Kanak yadav

TI__Mastermind 19351 points

Hi Kanak,

5V is located on pin 21 (https://www.ti.com/lit/ml/spnu617/spnu617.pdf)

Regards,

Peter

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TMS570LC4357: Debug the code using external debugger of Tms570LC4357 Launchpad