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TI Home » TI E2E Community » Support Forums » Microcontrollers » MSP430™ Microcontrollers » MSP430 Ultra-Low Power 16-bit Microcontroller Forum » Loading Constants into the INFO Flash
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    Loading Constants into the INFO Flash

    This question is answered
    Curt Carpenter
    Posted by Curt Carpenter
    on Aug 18 2012 14:04 PM
    Expert1185 points

    Hello.

    I'm writing assembler for the MSP2353 using CCS5 under WinXP. 

    In order to store a table of constants in the INFO flash area of my MCU, I edited the .CMD file that CCS produces to change the DATA segment start address  in memory from "RAM" (the default) to INFOD, as follows:

    SECTIONS
    {
        .bss        : {} > RAM                /* GLOBAL & STATIC VARS              */
        .data       : {} > INFOD              /* GLOBAL & STATIC VARS              */

                                       ....

    Then I put my constants in a .DATA section in my assembly code.  This seems to give me exactly what I want -- my constants moved out of my program flash and into the Info flash address space. But...

    Can anyone confirm for me that this is the "right" way to go about this?  How common is it to manually edit the .CMD files that CCS produces?  I'm relatively new to CCS, and would like not to crash it.

    Thanks

    Curt Carpenter

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    • BrandonAzbell
      Posted by BrandonAzbell
      on Aug 18 2012 15:35 PM
      Verified Answer
      Verified by Curt Carpenter
      Guru54790 points

      It is certainly a viable option.  I don't recall what is included in the .data section as well.  Perhaps this is your own named section.

      Which leads me to the point that you can create you own named sections and perform the same mechanism in the linker command file.

      It is not an issue to modify the linker command file, but you should take care when doing so.

      Brandon

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