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Does CCS 5.5 support JLink for Stellaris LM3S9B96 debugging?

Boris Shajenko
Prodigy 20 points
Other Parts Discussed in Thread: SEGGER

I've installed CCS 5.5, Segger J-Link Software v4.78a, and ti_jlink_support_setup_0.1.0.4.zip (all latest versions as of 10-OCT-2013). Using the J-Link Ultra+, the device is programmed within seconds and stops at the main() breakpoint. Upon pressing Resume (F8) the code runs until an interrupt occurs and then the debugger stops with the following message: No source available for "0x37ff000".

I've tried all combinations of options in the J-Link Control Panel, including disabling Flash breakpoints, disabling caching of flash contents, disabling instruction set simulation, and disallowing modification of breakpoints during execution.

I've also disable use of breakpoints within the CCS debug options. None of the options has made a difference.

If I reset the micro and let it run without the debugger, the code runs fine as expected.

I'm able to debug interrupts using the XDS100v2 by setting hardware breakpoints within the interrupt handler and single stepping, however, I'd like to use the JLink Ultra+ since it is so much faster.

I've also used the ICDI but it is painfully slow -- takes minutes to load and extremely slow for stepping through code.

So my questions are:

1. Has CCS 5.5 been tested with the Segger J-Link Ultra+ and the Stellaris LM3S9B96?

2. Does it support breakpoints and stepping through code?

3. Does is support debugging with interrupts?

4. If all above are yes, then what could I be missing?

Thanks,

Boris

  • 0
    TI__Guru**** 169834 points

    Boris,

    I got a similar scenario as you (code jumps to 0x037FF000) on my LM3S9D96 board when using my Jlink version 8.0, irrespective if I set breakpoints, step, or the code has interrupts - I used several Stellarisware example projects (with and without interrupts).

    However, after it goes to the invalid address I issued a restart (menu Run --> Restart) then the code ran absolutely fine. (edit) I just noticed the Interrupts example code fails to run with a simple Restart, thus preventing further debug using Jlink.

    I definitely think there is something under the hood that is failing, although the workaround seems to work just fine (edit). Can you give it a try while I do some more tests on this?

    Regards,

    Rafael

     

  • 0 in reply to desouza
    TI__Guru**** 169834 points

    Boris,

    I tried one more thing and it worked as a workaround. After loading the code and running for the first time (and failing), I was able to run it successfully if I reset the core (menu Run --> Reset --> Core Reset).

    Hope this helps,

    Rafael

  • 0 in reply to desouza
    TI__Guru**** 169834 points

    Boris,

    I found the bug number SDSCM00046255 was already filed by a developer. This issue is under investigation.

    Regards,

    Rafael