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Problem converting out to hex and hex to bin.

Dmitri Semonenkov
Intellectual 270 points
Other Parts Discussed in Thread: TMS320F28377D

Hello all!

I write bootloader for tms320f28377d.

I have a programm (writer bin file to flash).

This programm work is fine.

But I have a problem with converting out file to bin.

I use hex2000.exe and FileIOShell.exe

I use bat file to convert :

hex2000.exe -i "flash_programming_cpu01.out" -o "flash_programming_cpu01.hex" -order MS -romwidth 16

FileIOShell.exe -i flash_programming_cpu01.hex -o flash_programming_cpu01.bin

When I compare direct flash(load using CCS6) and bin file I find different:

Where is my mistake?

Please help me!!!

  • TI__Expert 4595 points

    Dmitri,

    I am not sure of the answer to your question, but I have some ideas for you to consider and look into.

    Is the 1st symbol stored in Ramfuncs a 16-bit or 32-bit symbol?  I am wondering if the code-gen tools are doing a 32-bit even alignment on a 16-bit storage and filling the whole with 0xFFFF.  Try changing the order of the entries into Ramfuncs and observe the results.  This should help give a better understanding of what is happening, then we can figure out a solution.

    Jeff

  • in reply to Jeff Stafford
    Intellectual 270 points
    How to change order?
    I define rum_func in programm and cmd file.
    I use func to copy from flash to SRAM : memcpy(&RamfuncsRunStart, &RamfuncsLoadStart, (size_t)&RamfuncsLoadSize);
  • in reply to Dmitri Semonenkov
    TI__Expert 4595 points

    Do you store any functions in the "ramfuncs" section, such as below ?  If so, change the order.  

    // Functions that will be run from RAM need to be assigned to
    // a different section.  This section will then be mapped using
    // the linker cmd file.
    #pragma CODE_SECTION(epwm1_timer_isr, "ramfuncs");
    #pragma CODE_SECTION(epwm2_timer_isr, "ramfuncs");
    By default the flash initialization code is loaded into "ramfuncs" in the SysCtrl.c file.  
    // Functions that will be run from RAM need to be assigned to
    // a different section.  This section will then be mapped to a load and
    // run address using the linker cmd file.
    //
    //  *IMPORTANT*
    //  IF RUNNING FROM FLASH, PLEASE COPY OVER THE SECTION "ramfuncs"  FROM FLASH
    //  TO RAM PRIOR TO CALLING InitSysCtrl(). THIS PREVENTS THE MCU FROM THROWING 
    //  AN EXCEPTION WHEN A CALL TO DELAY_US() IS MADE. 
    //
    #pragma CODE_SECTION(InitFlash, "ramfuncs");
    If you are not adding anything to "ramfuncs", go ahead and add a function to this section.  The goal is to better understand what is happening with the issue you are seeing by changing what is loaded into the ramfuncs section.
  • in reply to Jeff Stafford
    Intellectual 270 points
    Yes,I define rumfunc before func using directive Pragma CODE_SECTION
    If I load using ccs6 utilit the work is fine.
    My mind is: aligned as 32 bit.
    An Bat converting utilite (see higer) do wrong file.
    If I define const as example(added 16 bit to text )
    .text
    .word 1108;

    The work is fine!!!!
    And align is good.
  • in reply to Dmitri Semonenkov
    TI__Expert 4595 points

    Dmitri,

    What we are observing is the linker putting _RamfuncsLoadStart at an even word boundary (0x080E8A) and the hex2000 utility not aligning this section.

    I don't have an answer for you other than the work-around of adding a hole as you did with the ".word" directive.

    Please post this question on the compiler forum:    

    The codegen tool experts will be able to help you.

    Jeff