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CCS/TMS320F28335: How to read out program flash using CCS or Uniflash?

Stefani
Intellectual 995 points
Part Number: TMS320F28335
Other Parts Discussed in Thread: UNIFLASH

Tool/software: Code Composer Studio

Hello,

I am debugging why the same code works in some boards and not in others.  One of the tests we want to do is to read out the program (in the internal flash of the DSP) from the good board and program the bad boards with the result.

Looking into it, I cannot find a way to extract the program using CCS 5.2, Uniflash, or Signum On Chip Flash Programmer.  Uniflash can calculate the checksum, which means it can read the flash as "data" but not read the program and save it to a file?

Am I missing something?

Thank you.

  • 0
    TI__Guru* 87155 points
    Stefani,

    See if this helps: e2e.ti.com/.../573119

    Thanks and regards,
    Vamsi
  • 0 in reply to Vamsi Gudivada
    Intellectual 995 points
    Vamsi,

    Thank you for replying.

    This is what I found:

    ".... can dump the flash memory from CCS memory window. Click on green button in memory window ..."

    Memory window is Memory Browser in Debug. The green button is an arrow.

    Must go into "Debug mode" first, otherwise the arrow button in Memory Browser will not turn green.
    "Load symbols only" for Debug. Otherwise it will program the flash.

    Is there a way to do the Memory Browser and "press the green (arrow) button)" without actually going into Debug mode?

    Thanks.
  • 0 in reply to Stefani
    TI__Guru* 87155 points

    Stefani,

    I think it is the only way via GUI.

    Thanks and regards,

    Vamsi

  • 0 in reply to Vamsi Gudivada
    TI__Genius 13095 points
    Stefani,

    As Vamsi mentioned, you can only access the Memory view in CCS after connecting to the target in debug.

    There is also the "Export memory" feature in UniFlash. In UniFlash v4, you can go to the "Memory" tab, click on "Read Target Device" and then click on "Export" to save the memory to either binary or COFF format.

    Thanks,
    Ricky
  • 0 in reply to Ricky Lau
    Intellectual 995 points

    Hi Ricky,

    Thank you so much for replying to my post.

    I had tried using UniFlash as you suggested, but the program area is all 0xFFFF.  I use "Program Page" , Address 0x0030,0000.

    What am I missing here?

    Thanks.

  • 0 in reply to Stefani
    TI__Expert 4150 points

    Stefani,

    1. You don't want to export the program from the good board and load on to the bad board. You should export the same memory region on both devices and compare if they are the same

    2. if you are getting all 0xFF it means the flash memory was not written. Erased flash memory have values of 0xFF. Make sure you are actually giving the right address of the program

    3. are you loading a .out file or a .bin file to the devices? If you are using .bin then you have to specified the address, you need to use that as your export address.

    if you are loading a .out file, you can use compiler tools in <ccs_install>\ccsv7\tools\compiler to figure out the address of your program. A simpler way is to use the memory browser window to see the memory first then export to make sure you have got the right stuff.