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Tiva Launchpad enumerates as "Stellaris Virtual COM Port"

Derek
Mastermind 9782 points

Hello,

   I was testing some code that I wrote for the Tiva Launchpad and I noticed that the USB port enumerates with the string "Stellaris Virtual COM Port". It appears that this string escaped the Tiva to Stellaris name change. It all works the same but it looked a little funny when my instructions told the client to select "Stellaris" something or other to connect to a Tiva board. Client doesn't know what Stellaris is; only Tiva.

Not a problem, just something I noticed.

  • TI__Mastermind 26900 points

    There were a couple of driver strings we deliberately didn't touch in the rebranding because that would have required the drivers to be recertified. I'm not sure if this is one of them but that's possible. It may also be the case that your PC has cached the old name. Try removing the driver for that device and reinstalling it from the version in the latest TivaWare. You may find that that corrects the "problem".

  • in reply to Dave Wilson
    Mastermind 9782 points

    That makes sense. It may lead to questions further down the road, though.


    Regarding reinstalling the driver: no thanks. "If it ain't broke, don't fix it" :) Doing something like that could turn into a whole lot of work.

    On a side note, the XDS100 works really well, BTW. I've always just used an extra Stellaris board for debug, but the XDS100 is faster. I just wish it had a plastic enclosure.

  • in reply to Derek
    TI__Guru 68830 points

    Derek,

    The XDS100v2 is an open design and there are actually some folks selling XDS100v2's with enclosures on eBAY for about $50.  :)

     

  • in reply to Anthony F. Seely
    Guru 27285 points

     Anthony, I see a lot of items selling for less, the question is how reliable are these?

     See this, is TI brand? ;) As it appear from box?

    http://www.ebay.com/itm/XDS100-XDS100V2-JTAG-Emulator-debugger-For-TI-DSP-ARM9-Cortex-A8-TMS320-CCS4-5-2-/171144296301?pt=LH_DefaultDomain_0&hash=item27d8feb76d

      The pro is a best fake shining.. Generally the worst is reliability, this price we can try two for one.

  • in reply to Roberto Romano
    TI__Guru 68830 points

    Hi Roberto,

    I don't have any direct experience with any of the several 'boxed' XDS100v2's including the one you linked to.  And I don't know about the use of the logos - whether this was done w. permission or not.  I don't think this is a TI product however if it's coming from china, we partner with value-added-resellers there - like distributors but they provide more engineering support than the typical distributor in the US.  They will take designs for EVMs and emulators and mass produce them with their own 'flair'.  Some of these listed for sale today might be from that group. If so then I think I'd have high expectations.  You could also ask the seller who made the emulator - if it's a big name 'var' ...

    I did personally buy the USBFLYING adaptation http://www.ebay.com/itm/XDS100-USB2-0-DSP-JTAG-Emulator-Support-TI-CCS-V4-x-XDS100V2-Compatible-/301008161723?pt=LH_DefaultDomain_0&hash=item46157c0bbb#ht_2546wt_1361 - I use it in my lab at home and have been happy with it.  It's 'big' and spacioully laid out.  I wonder if the designer has in mind enabling some other features with this board.   But I don't know.    We purchased a second one here at work when we needed an emulator that we could 'hack' to do some testing just because it was laid out with a lot of room ...  Both worked well.

    Someone selling this for $40 probably isn't making a lot - but that may be ok for them.  When we originally did the math on the BOM in reasonably high volume it came out in the mid $20's - you could get the design info from our processor wiki and form your own opinion of what it should cost.  Anyway I don't think $40 means it's 'so low cost'  that it must be a 'knockoff' with problems -- could be just that the seller is happy w. low margins.

    And if you don't find what you want - you can always download the design from our processor wiki and build some - maybe keeping a few and selling the rest.  If you have a good idea to make it a little different than the others that's great - it's what we wanted to enable.  Some shops have made 'differentiated' versions by having different cables (since there are multiple JTAG connectors in use) and as you can see on ebay some are offering the design 'in a box' ...  I'm personally hoping someone will build on that also has SPI or I2C analyzer capability - or maybe additional GPIO to do things like power cycle your board remotely... just some thoughts.

    However - If you buy one of the overseas units from ebay - I'd just say caveat emptor - you could post some questions to the seller like who manufactured the emulator.  If it's a big name var (like distributor) over there you might feel better about it.  And you can always try to go with a guarantee on your purchase - maybe through ebay or paypal too... 

    And if you do purchase one of the boxed units let us know by posting here how it works out.

    Best Regards,

    Anthony