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Hercules™ Safety Microcontrollers

Welcome to the Hercules™ Safety Microcontrollers Section of the TI E2E Support Community. Ask questions, share knowledge, explore ideas, and help solve problems with fellow engineers. To post a question, click on the forum tab then "New Post".

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CRC
  • AppNote
  • CRC64
  • DMA
  • FIQ
  • Full CPU mode
  • HALCoGen
  • Hercules
  • RTI
  • SPI
  • TMS470M
  • tms570
Related Posts
  • Forum Post: TMS570 CRC

    Richard Burke Richard Burke
    I see in the Technical Reference Manual that the TMS570 includes a CRC peripheral. We are wondering whether we can use this to create a CRC and validate data packets transmitted across an SPI bus. Is this a possible application of the CRC peripheral? If so, do you have any sample code? (Halcogen...
    on Jan 28, 2011
  • Forum Post: Errors in CRC section of TMS570 technical reference manual, SPNU489A June 2010

    Richard Burke Richard Burke
    There are numerous errors in the CRC section (22) of the TRM. Here is a list of the ones I have spotted so far: The register offsets in section 22.5 bear little resemblance to the offsets in the detailed descriptions from section 22.5.1 onwards. I assume the ones in the detailed sections are correct...
    on Feb 2, 2011
  • Forum Post: Cyclic Redundancy Check Controller (CRC) Module Very Slow Operation

    Tony Morrell Tony Morrell
    Hi, I am using the TMS570 inbuilt Cyclic Redundancy Check Controller (CRC) Module to CRC 8 16-bit words of data. This takes some 3 microseconds (yes, 3us, I'm not joking). I have tried similar code style for a straight checksum in a simple loop and this takes 1.9us (I still think that this...
    on Mar 30, 2011
  • Forum Post: Complex SPI, DMA, CRC, RTI, FIQ integration scenario

    Tony Morrell Tony Morrell
    I have a complex TMS570 SPI problem which I would appreciate some advice on. Requirements: My SPI Master transmits a 9-word (i.e. 9*16=144-bit) message. The first 8 words contain control data, the last word contains a CRC of the 8 data words. I am using one transfer group within my SPI, and only...
    on Apr 4, 2011
  • Forum Post: Re: Cyclic Redundancy Check Controller (CRC) Module Very Slow Operation

    Pratip Kumar Pratip Kumar
    Hi Tony, This question has been forwarded to respective expert . I'll get back to you as soon as I hear the response. Best Regards, Pratip
    on Apr 5, 2011
  • Forum Post: Re: CRC Algorithm

    Richard Burke Richard Burke
    I have implemented the algorithm as described on page 1630 of the TRM but it is **horribly** inefficient. At least it gives the same answer as the hardware CRC engine but there must be a better way! This is compiled in MSVC 2008. The comments reflect the HDL code in the TRM. crc_t is a typedef defined...
    on Apr 12, 2011
  • Forum Post: Re: TMS570 CRC

    Richard Burke Richard Burke
    Hi David, I posted an algorithm here to precalculate the CRC http://e2e.ti.com/support/microcontrollers/tms570/f/312/p/104764/368714.aspx#368714 . Unfortunately nobody has come up with a more elegant solution yet :( Regards, Richard
    on Sep 15, 2011
  • Forum Post: Re: TMS570 CRC

    Richard Burke Richard Burke
    Hi David, If you read the second post in this chain, you will see in the third paragraph that Frank states that the order of the registers defeats the big endian format for 64 bit numbers. In other words, the high and the low 32 bit parts of the answer are reversed which is exactly what you have discovered...
    on Sep 15, 2011
  • Forum Post: Re: CRC Algorithm

    Richard Burke Richard Burke
    Hi Abhishek, This one has been open now for nearly 9 months so maybe the algorithm that I listed in an earlier post is the best (only) way to do this. I will close this post and mark my earlier message with the algorithm as the verified answer. Regards, Richard
    on Jan 12, 2012
  • Forum Post: Update version of application report "Verification of Data Integrity Using CRC" ?

    Vaclav Cechticky Vaclav Cechticky
    Hello, In one of the posts on CRC topic was provided an application report "Verification of Data Integrity Using CRC" and also source code. Since it was a preliminary version from July 2009, I'd like to ask you for pointing me to the new application report and also to source code...
    on Feb 15, 2012
  • Forum Post: Re: Update version of application report "Verification of Data Integrity Using CRC" ?

    Jean-Marc Mifsud Jean-Marc Mifsud
    Vaclav, I'm not aware of any update for this document and example but I will check and let you know. Did you try it? Is it applicable to your application? Thanks and Regards, Jean-Marc
    on Feb 15, 2012
  • Forum Post: Re: Update version of application report "Verification of Data Integrity Using CRC" ?

    Vaclav Cechticky Vaclav Cechticky
    Hello Jean-Marc, Unfortunately, I didn't find this document and example in the official TI list of application notes but in this discussion: http://e2e.ti.com/support/microcontrollers/hercules/f/312/t/69395.aspx#253267 So far, I couldn't find any updated version of the document and...
    on Feb 16, 2012
  • Forum Post: Re: Update version of application report "Verification of Data Integrity Using CRC" ?

    Christian Herget Christian Herget
    Vaclav, the AppNote is on the web: http://www.ti.com/lit/an/spna146/spna146.pdf Best Regards, Christian
    on Mar 5, 2012
  • Forum Post: Re: Update version of application report "Verification of Data Integrity Using CRC" ?

    Vaclav Cechticky Vaclav Cechticky
    Hi Christian, Many thanks, great!!! Regards Vaclav
    on Mar 7, 2012
  • Forum Post: Re: Update version of application report "Verification of Data Integrity Using CRC" ?

    Vaclav Cechticky Vaclav Cechticky
    Hi Christian, Is there also sample code available for this application note? Thanks Vaclav
    on Mar 19, 2012
  • Forum Post: offline CRC calculation

    Phil Eagleton Phil Eagleton
    Hi All, I am using the CRC block in the TMS470M to provide a CRC of flash memory contents to prove code integrity. I am, as part of the programming sequence, calculating, and inserting the known CRC of the code into the hex file to be downloaded. Has anyone any experience with a suitable algorithm...
    on Jul 3, 2012
  • Forum Post: Need help on CRC module

    Tim Park Tim Park
    Hi experts, Could you please help to provide a CRC module example based on F021 chips(such as TMS570LS3137,RM4x) through AUTO Mode, Semi-CPU Mode and Full CPU Mode, to prove they can get the same correct calculated signature? And I cann't run the codes at the link:http://e2e.ti.com/support/microcontrollers...
    on Oct 11, 2012
  • Forum Post: RE: Need help on CRC module

    Prathap Prathap
    Hi Tim, Attached is the Semi-CPU and Auto mode examples which I extracted from Test team. Hope it helps. Note: HALCogen( 03.03.00) does not support Semi and Auto mode.. (Please visit the site to view this file) Best Regards Prathap
    on Oct 17, 2012
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