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TMS320F28P559SJ-Q1: How to generate the "data only" hex file

Joe Ji
Expert 4370 points

Part Number: TMS320F28P559SJ-Q1

Tool/software:

Hi Expert

Customer need to generate customized the S/W version information and downloaded to flash_bank_4, it should be a hex file data which is appended to the APP hex file. How can customer generate those data with CCS?

Thanks

Joe

  • +1
    TI__Guru**** 253590 points

    It is probably better to encode the version information directly in the executable .out file, then extract it from there.

    Add lines similar to these in one source file:

    __attribute__((retain))
static const char version_string[] = "VERSION: 1.2.3";

    Then dump the executable file to ASCII characters with a command similar to ...

    od -Anone -w200 -c file.out > dump.txt

    In that command, -w200 means dump 200 characters per line.  This reduces, but does not eliminate, the chance the version string spans two lines.  Inspect dump.txt to find something similar to ...

     V  \0   E  \0   R  \0   S  \0   I  \0   O  \0   N  \0   :  \0      \0   1  \0   .  \0   2  \0   .  \0   3  \0

    That's because the type char is 16-bits wide on C28x.  Viewed like this, there is a byte of 0 between each ASCII character.  With most text editors, you can automatically change that to something close to:

    VERSION: 1.2.3

    Thanks and regards,

    -George