CCS/TMS320F28377D: XDS110

Federico,

What is the error you get when trying to connect the target?

It will be good to go ccs menu View -> Target Configuration. Open target configuration, and run 'Test Connection".

The link below is good reference for debugging JTAG connection issue.

https://software-dl.ti.com/ccs/esd/documents/ccs_debugging_jtag_connectivity_issues.html

This is what I get with Uniflash:

And this is what I get with Code Composer Studio v10:

-----[An error has occurred and this utility has aborted]--------------------

This error is generated by TI's USCIF driver or utilities.

The value is '-233' (0xffffff17).
The title is 'SC_ERR_PATH_BROKEN'.

The explanation is:
The JTAG IR and DR scan-paths cannot circulate bits, they may be broken.
An attempt to scan the JTAG scan-path has failed.
The target's JTAG scan-path appears to be broken
with a stuck-at-ones or stuck-at-zero fault.

[End]

Is this TI EVM or your custom board? 

It is a custom board.

But I have the same problem on a custom board mounting TMS320F28035.

Regards,

Federico 

Let's use CCS to debug first.

Can you go to Target Configuration, and run the "Test Connections" and send full log?

I also have a LAUNCHXL-F280049C and in this case it works (Uniflash 6.0.0 and Firmware 3.0.0.13)

At least I know that the XDS110 is not defective.

What could be the problem with other 2 devices?

Regards,

Federico

Federico,

Please see if this helps:

https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/917331#pi320995=1

Thanks and regards,

Vamsi

Any update on this issue? Are you able to resolve it?

No I didn’t. I’ve bought  XDS100v2 and it now works on all the boards I have.  I also had connection problems with that probe at the beginning but I fixed by connecting TDIS pin to GND.

I don’t think the problem I’m having with XDS110 depends on that, but it’s worth trying to do same.

As soon as I do this test I’ll let you know.

Ok. Let's us what you find.