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DFI, writing golden file, etc. Best practices?

Steve Garcia
Intellectual 420 points
Other Parts Discussed in Thread: BQSTUDIO

Hi,

I'm tasked with creating a production tool for programming a bq27741.

I've searched and found some questions and answers about programming a fuel gauge with a DFI or golden file.  I've found flowcharts with a high level representation of different steps in the process.  In some cases they raise more questions than answers. 

What I have not found is a top to bottom description of the steps in the process starting with a *.bq.fs and/or a *.df.fs file and ending with a ready to ship product.

Does such a white paper exist?

Steve

  • 0
    Intellectual 420 points
    Additional info:
    A coworker has used "Battery Management Studio (bqStudio) to produce 3 files: *.srec, *.bq.fs, and *.df.fs

    The more recent forum entries seem to recommend, at least for some gauges, using one or more of these three files rather than a single DFI file. Does this hold true for the bq27741?

    The df.fs file in particular looks to contain a parsed series of I2C instructions for programming a gauge. I believe it programs only the data portion of a gauge.
    The bq.fs file, I believe, contains I2C instructions for updating gauge firmware as well as the data portion.

    SLUA541A documents the contents of the df.fs and bq.fs files.

    I see frequent mention of a TI tool "FlashStream". Has this been replaced with bqStudio?

    Steve
  • 0 in reply to Steve Garcia
    TI__Guru* 76230 points

    Hi Steve

    flashstream tool is obsolete and has been replaced by bqstudio.

    pls use either the dffs or bqfs to program the IC using your host. Your understanding of the files are correct.

    thanks

    Onyx

  • 0 in reply to Onyx Ahiakwo
    Intellectual 420 points
    Thanks, Onyx.

    Steve