XDS110 from MSP432P401R Launchpad for CC26xx/CC13xx

Oleg Pushkarev

Other Parts Discussed in Thread: ENERGIA, CC2640, CC2650, CC1310

Hi,

Is it possible to use MSP432P401R Launchpad onboard XDS110 for CC26xx/CC13xx?

It has JTAG and SWD but it seems that connector J103 provide only SWD signals. Will it work if one uses JTAG lines (TCK_SWCLK; TMS_SWDIO; TDO_SWO; TDI) from differents points on the MSP432P401R Launchpad?

from MSP‑EXP432P401R LaunchPad™ Evaluation Kit User's Guide

2.3.4 Using the XDS110-ET Emulator With a Different Target

The XDS110-ET emulator on the LaunchPad can interface to most ARM derivative devices, not just the on-board MSP432P401R target device. This is not a common use case, but for users who want this functionality, there is a way to enable it. Connector J103 was added to expose all the necessary programming and power signals. J103 is a 50 mil spaced 7-pin header. By default it is not populated, so the user will have to populate a connector or directly solder in wires. When using the XDS110-ET with a different target, the jumpers in the isolation block should be removed, and switch S101 moved to the external debug position. This will disconnect the XDS110-ET from the MSP432P401R target and enable debug of an external device. Because only the SWD signals are exposed, the user needs to set the debugger settings to SWD (without SWO) in the IDE. See the IDE specific MSP432 user's guides for more details on this setting

over 9 years ago

0 Oleg Pushkarev over 9 years ago

Expert 1740 points

OK, it is possible but not straight forward. Two additional wires solved the problem:

0 TA12012 over 9 years ago in reply to Oleg Pushkarev

TI__Mastermind 36385 points

That is really cool, thanks for the update.

Regards,
/TA

0 TER over 9 years ago in reply to TA12012

TI__Guru**** 317180 points

One other option would be to use www.ti.com/.../CC-DEVPACK-DEBUG.

0 Robert Cowsill over 9 years ago in reply to Oleg Pushkarev

Guru 16361 points

Thanks for confirming that this is possible! Can you give some more detail on where those extra wires go? It's not too clear from the picture.

EDIT: I see that TDI is accessible from the JTAG switch (S101) solder pads on the underside of the board. TDO seems like it's a lot harder to get at.

0 Oleg Pushkarev over 9 years ago in reply to Robert Cowsill

Expert 1740 points

Hi,

I got TDI from S101 pin 6 "XDSET_TDI". It's not a problem as pin is available for connection.

I got TDO from "XDSET_TDO_SWO" pin 12 IC111. The best way to access the line was to open mask on the trace not far from IC111. Be careful not to hurt another lines. Fix the wire by drop of glue.

0 Leo Pestanas over 8 years ago in reply to Oleg Pushkarev

Intellectual 810 points

Hi,

This is verified working. Tried on Energia and CCS, can burn the standalone chip.

Tried with the sketch "Fade" from examples inside Energia.

Thanks for sharing this idea.

Leo

0 Nafeesa Muntashar57 over 8 years ago in reply to TER

Intellectual 810 points

Hello TER,
Is it ok if I dont connect TDI and TDO pins??

0 Leo Pestanas over 8 years ago in reply to Nafeesa Muntashar57

Intellectual 810 points

Hi Nafeesa,

I never tried yet but from what I think, You cannot use the JTAG Debugger but can program the standalone IC.

I'll get back to you after trying to remove the TDI and TDO and program the IC.

Leo

0 Nafeesa Muntashar57 over 8 years ago in reply to Leo Pestanas

Intellectual 810 points

Hello Leo,
I tried connecting without TDI and TDO pins. The target is connecting and I am able to debug the program:)

0 Leo Pestanas over 8 years ago in reply to Nafeesa Muntashar57

Intellectual 810 points

Hi Nafeesa,

Good to hear that it is working even if you tried to run debug mode and program an external target MCU.

I was not able to try that. So what is the importance of these pins (TDI, TDO)?

Best Regards,

Leo

0 rohit togale over 8 years ago in reply to Leo Pestanas

Intellectual 830 points

I will solder TDI of J-Tag to S101 pin 6 "XDSET_TDI" (XDS110)

and TDO of JTAG to "XDSET_TDO_SWO" pin 12 IC111 and i will use it for debugging CC2640.

Now suppose if i want to use same Debugger (XDS110) again for MSP432P401R ,
Then do i need to De-solder the connection of TDI and TDO..??

0 Oleg Pushkarev over 8 years ago in reply to rohit togale

Expert 1740 points

Hi,
I think You don't need to desolder these wires. It should not influence on MSP432P401R programming. Just keeps attached wires reasonable short.

0 rohit togale over 8 years ago in reply to Oleg Pushkarev

Intellectual 830 points

Hi oleg,, Are u sure..??
But if you go thru MSP432P401R launch pad, the pins to be soldered (i.e pin 6 of S101 and Pin 12 of IC111) are very small. And i am not getting sufficient area to solder, if i solder there can be possible that the board may get damage because of small pin size and very less space availabe on Launch pad..
Can you suggest me other possible solution..
Thanks for your time

0 Oleg Pushkarev over 8 years ago in reply to rohit togale

Expert 1740 points

Hi, I do not know another way to use MSP432P401R launch pad as programmer for CC26xx.

0 TER over 8 years ago in reply to Oleg Pushkarev

TI__Guru**** 317180 points

Now the CC2650 launchpad is out (www.ti.com/.../launchpads-connected-launchxl-cc2650.html, this has a 10 pin jtag connector that can be used to debug external targets.

0 Leo Pestanas over 8 years ago in reply to rohit togale

Intellectual 810 points

Hi Mr. Rohit,

It is not necessary to directly solder pin12 of IC111. I stripped of the PCB enamel to expose the trace going to that pin of IC111.

From there, I can now solder more safely and attach a piece of smallest jumper wire that I can find to my 7pin 1.27mm header JTAG connector.

Care must be taken to solder the point going to pin12 of IC111. The TX/RX pin, i did not connect to my 7pin header.

Good day,

Leo

0 Robert Cowsill over 8 years ago in reply to Nafeesa Muntashar57

Guru 16361 points

Nafeesa Muntashar57 said:
Hello Leo,
I tried connecting without TDI and TDO pins. The target is connecting and I am able to debug the program:)

I just tried this and it works with the latest XDS110 firmware. TI have updated the firmware to support cJTAG, which makes it possible to program a CC26xx target without needing TDI and TDO connections. See this thread for further details: https://e2e.ti.com/support/wireless_connectivity/bluetooth_low_energy/f/538/p/410451/1721479#1721479

This is great news because it means we no longer need to make the difficult connections to TDI and TDO. The cable can now be wired up with just five connections to J103 (GND, RST, SWCLK, SWDIO and 3V3).

0 Jose Luis Sanchez over 8 years ago in reply to Leo Pestanas

Intellectual 490 points

Thanks!!!! I do the connections you show and works fine with cc1310!!!

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XDS110 from MSP432P401R Launchpad for CC26xx/CC13xx