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Stellaris LM3S to Tiva C Series Migration_

There is no such thing as a dumb question... but it certainly helps folks on this forum if you read existing documentation before asking.

We prepared a silicon migration doc for LM3S to Tiva C Series MCUs: http://www.ti.com/litv/pdf/spma049 

We prepared a software migration doc for StellarisWare to TivaWare for C Series MCUs: http://www.ti.com/litv/pdf/spma050 

_

Regards, ~Miguel

9 Replies

  • Dear Miguel,

    I've been looking through the software migration doc you indicated, in order to upgrade to the new naming and conventions.
    I've stumbled upon section 3.5.1: "The I2S, EPI, and Ethernet modules have been removed from DriverLib in the migration from
    StellarisWare to TivaWare"

    Does this mean that TivaWare does not support LM3S parts anymore?
    Those parts do have I2S, EPI, and Ethernet modules.

    I have current (not obsolete!) projects with LM3S parts and new projects with LM4F ...ooops TM4C parts.

    Does this mean that I need to have a copy of the latest Stellarisware around to still compile older projects?

    Any plan to fix this?

    Regards.
    Mau.

  • In reply to Maurizio Ferraris:

    As stated from other posts from TI people (paraphrasing):

    TivaWare does not support LM3S (Stellaris) parts.  It never did.  It starts with the TM4C parts (some of which are identical to LM4F parts).

    You will have to use StellarisWare for LM3S parts.

  • Dear Miguel, I read these documents in advance to your post but again as in the other post, NO SILICON is available nor TM4 LM4C has not enough peripheral to fit all open design, too many are targeted to LM3S9xxx part, also concerto appear as dangerous so what to do??

     LM3S we see suffered from too may issue but all our LM3S based project prepare to suffer obsolescence from TI silence and long delivery of silicon....

     Stellaris appear as was completely thrashed out ... is new LM4xxx stabe enough to invest on??

     Regards

     Roberto


     Please login & click    Verify Answer    if this post answered your question.

  • The software migration doc has been revised, and the OP link no longer works. At the time of writing, the doc is found at http://www.ti.com/litv/pdf/spma050a.

  • In reply to Anders Montonen:

    What about the migration of the IEC 60730 startup routines from Stelarisware to TivaWare?

    When will this library be written for the peripheral checks?

  • In reply to Paul Jaeger:

    Roberto,

    Tiva devices are seeing STRONG investment from TI across the board.  Given they just released to production, we will be into the summer months when we get to the targe 8 week lead times that TI strives to achieve and the parts are fully stocked across online distributors.

    Paul,

    Regarding IEC 60730 we are looking into when we can make a port available, but I do not have a concrete commitment at this time. What kind of application are you developing that would benefit from its port?

    Regards, ~Miguel

  • In reply to miguel2667:

    miguel2667

    Roberto,

    Tiva devices are seeing STRONG investment from TI across the board.  Given they just released to production, we will be into the summer months when we get to the targe 8 week lead times that TI strives to achieve and the parts are fully stocked across online distributors.

     Miguel sorry for still repeating same word word word word......

     Stopping a complex design like where LM3S9xx is involved waste a long term investment from small firm, they cannot survive like TI... All have tasted this really bad all have a disappointment and shortage of resources too.

     Again word word but AGAIN NO SILICON NO PLANS!!!! Miguel WHERE is silicon?? Silicon not sand can be a chip in some unknown future...

     My FAE has no word for me and still say to ask you and your team... Your word sound as empty. Sorry but investment where we are small and pressed by recession is too much than a promise from a huge company, I am afraid a long term reliable and user friendly company like National Semiconductor disappeared .. I remember from my joung age time how simple was to have a contact and I learned a lot from NS handbook, a real reference and a lot of human power .. I never can forget Bob Pease and other at NS from early age of LM10. Everything from first chip was still online.. Remember 16016 and 32032? precious  book on my shelf, Ok NS stopped like other do that as fro SCMP, RCA 1802 but documentation is still in place and never hidden, it was early time of processing and too much advanced thing like transputer appeared and disappeared, COPS from NS survived but I never evaluated as they targeted mass market, using analog from NS and MSP430 was my best reliability, now stellaris is my fault, this is mature time and current market dominator cannot disappear on initial market launch.. A fade out WAS necessary and no pin to pin replacement forever need reliable durability.  Who can assure to me TIVA never disappear and I can live with it??

     Tell your commercial team Stellaris never showed large number due to is not ready for market spreading was to be started approx this year and next one, your company burned developer before they started your business, developer are two way burned, they need take some bread to live and need a reputation lost with this threat! No light is from your word, just some empty word, 50 part of new TIVA dropped to 49.

     Stellaris was too spread over a too large series, just cut out all variant leaving top chip, NRND them but leave on market?

     STellaris LM3S9xxx new part replacing it??

     On small project I never seen advantage from MSP430 over entry level of Stellaris, I am proud of this and again the trouble I am also experiencing with porting code sound again.. why not moving some time critical part to silicon and use a reliable mature like MSP430 instead of TIVA sandcastle ?

     Regards

     Roberto


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  •  I could not access http://www.ti.com/litv/pdf/spma050 .  I believe the latest reference is http://www.ti.com/litv/pdf/spma050A

    We are currently working with a Stellaris LM3S1811-IQC50-C5 and are looking at the TM4C1231E6PZ as the TI recommended alternative based on:

    1) I2C bus hardware lockup issues (not in errate for LM2S1811, but noted in forums)

    2) erase/write cycles limited from 15,000 to 100 in errata, 

    3) SPI limitation of hardware and drivers not supporting an Atmel AT25640B-MAHL-T SPI EEPROM frame polarity and timing.

    4) Vddc limitation of using internal LDO to required external LDO in rev C3 errata.

     

    My questions specifically is have the LM3S silicon issues noted above been resolved for the TM4C silicon

     

  • In reply to Oliver Smith:

    Oliver,

    Thank you for posting the latest link for the Migrating Software Projects from StellarisWare® to TivaWare™ application note.

    I have answered the questions about your design-in in this forum post

    -Rebecca

      

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