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TMS320F28379D: I have a question about CLA.

user4987442
Prodigy 100 points

Part Number: TMS320F28379D
Other Parts Discussed in Thread: C2000WARE

The CLA program is not loaded in FLASH and asks for help. thanks

The following is the entire project file, asking for help with the diagnosis.

ccpu.rar

  • 0
    TI__Mastermind 32995 points
    Hi,

    Can you please be more specific with a question?

    Please see the CLA examples in C2000Ware, and see the linker command files in device_support which includes CLA sections.

    Regards,
    sal
  • 0 in reply to Sal Pezzino
    Prodigy 100 points

    I am writing the entire program in assembly language.The CLA program can be executed in RAM during debugging, but it cannot be burned to the specified unit of FLASH.When the power is reset, CLA can't be executed again.

  • 0 in reply to user4987442
    Expert 2615 points

    Hi,

    In the file you sent you have commented out the two following lines in ccpu.asm:

    initial_cla:
;lc			flash_initialize	;FLASH初始化
;lc			copyprogramtosram	;搬运程序到CLA程序区

    To run from flash you need to initialize the flash memory and copy the CLA program from there to the desired RAM area.

    Can you check why these two calls are commented out?

  • 0 in reply to Pierre Bouchet1
    TI__Mastermind 32995 points
    Thanks, Pierre. Good catch.

    Yes, you need to load the CLA program and data to flash and then perform a memcpy to the proper RAM location. This is similar to how ramfuncs are handled in the linker command file and then copied to RAM in the main application.

    Our CLA examples and CLA linker command files demonstrate how to do this for programs which are loaded to flash.

    Regards,
    sal
  • 0 in reply to Sal Pezzino
    Prodigy 100 points

     
    But the premise is the use of your CMD configuration file, the CLA program can not be loaded into the FLASH, I do not know how to configure the CMD file to solve the problem that can not write CLA to the FLASH problem
  • 0 in reply to Pierre Bouchet1
    Prodigy 100 points
    During debugging, it is found that CLA program has been in RAM, so it has been unable to use these two subroutines.
  • 0 in reply to Sal Pezzino
    Prodigy 100 points
    But the premise is the use of your CMD configuration file, the CLA program can not be loaded into the FLASH, I do not know how to configure the CMD file to solve the problem that can not write CLA to the FLASH problem
  • 0 in reply to user4987442
    TI__Mastermind 32995 points
    Hi,

    The CLA program and data must first be loaded into flash, for it to remain through a power cycle. The code and data must be programmed into flash. Then your application must perform a memcpy using the symbols provided by the linker, just like ramfuncs.

    I am not sure what the confusion is. Can you explain?

    Regards,
    sal
  • 0 in reply to Sal Pezzino
    Prodigy 100 points
    I can not loading the cla program and data into flash .Even if use your CMD. When the file is loading，I found the CLA program and data is in the RAM.
  • 0 in reply to user4987442
    TI__Mastermind 32995 points
    Please see 2837xD_FLASH_CLA_lnk_cpi1.cmd.

    The program is loaded to flash. If you have data tables that need to get loaded, you can see the CLA math library linker command files to show you how to load your data to flash and copy to RAM. It is the same way that CLAProg and ramfuncs are handled.

    2837xD_FLASH_CLA_lnk_cpi1.cmd....

    /* CLA specific sections */
    Cla1Prog : LOAD = FLASHD,
    RUN = RAMLS4_5,
    LOAD_START(_Cla1funcsLoadStart),
    LOAD_END(_Cla1funcsLoadEnd),
    RUN_START(_Cla1funcsRunStart),
    LOAD_SIZE(_Cla1funcsLoadSize),
    PAGE = 0, ALIGN(4)

    CLADataLS0 : > RAMLS0, PAGE=1
    CLADataLS1 : > RAMLS1, PAGE=1

    Cla1ToCpuMsgRAM : > CLA1_MSGRAMLOW, PAGE = 1
    CpuToCla1MsgRAM : > CLA1_MSGRAMHIGH, PAGE = 1

    #ifdef CLA_C
    /* CLA C compiler sections */
    //
    // Must be allocated to memory the CLA has write access to
    //
    CLAscratch :
    { *.obj(CLAscratch)
    . += CLA_SCRATCHPAD_SIZE;
    *.obj(CLAscratch_end) } > RAMLS1, PAGE = 1

    .scratchpad : > RAMLS1, PAGE = 1
    .bss_cla : > RAMLS1, PAGE = 1
    .const_cla : LOAD = FLASHB,
    RUN = RAMLS1,
    RUN_START(_Cla1ConstRunStart),
    LOAD_START(_Cla1ConstLoadStart),
    LOAD_SIZE(_Cla1ConstLoadSize),
    PAGE = 1
    #endif //CLA_C
  • 0 in reply to Sal Pezzino
    Prodigy 100 points

     Hello!


    I tried to solve this problem with the method you provided, but the result was a failure. You can debug it according to the project I provided.
    Check to see if the CLA program can be loaded into FLASH.

  • 0 in reply to user4987442
    Prodigy 100 points
    Hello!
    Could you please provide me with a description of how to configure CMD files?
    thank you
  • 0 in reply to user4987442
    Expert 2615 points

    Hi,

    The best source of information for this topic is the Assembly Language Tools document : SPRU513. The relevant chapter is 8.5 Linker Command Files.

    See http://www.ti.com/lit/ug/spru513k/spru513k.pdf

  • 0 in reply to Pierre Bouchet1
    Expert 2615 points

    The thing is that your assembly code is in a section called "claprog" which is placed in RAM. You need to do something else, similar to the other section "ClaProg" which you are not using in the current version.

       ClaProg         : LOAD = FLASHD,
                      RUN = RAMLS0,
                      LOAD_START(_Cla1funcsLoadStart),
                      LOAD_END(_Cla1funcsLoadEnd),
                      RUN_START(_Cla1funcsRunStart),
                      LOAD_SIZE(_Cla1funcsLoadSize),
                      PAGE = 0, ALIGN(4)

    If you use this command all the code you allocated to section ClaProg will be copied in the flash area FLASHD but the symbols (e.g callable functions, etc.) will have their address in the RAM area RAMLS0. Furthermore the linker will define global symbols _Cla1funcsLoadStart, _Cla1funcsLoadEnd, _Cla1funcsRunStart. 

    You will then need to use these global symbols to copy the data from the flash range (_Cla1funcsLoadStart, _Cla1funcsLoadEnd) to the RAM range (_Cla1funcsRunStart, _Cla1funcsRunStart + _Cla1funcsLoadSize).

    It seems that you have a custom function copyprogramtosram but it doesn't look like a mere sequential copy of the CLA code.

  • 0 in reply to Pierre Bouchet1
    Prodigy 100 points

    Thank you, but how should I do it in the existing procedure?

  • 0 in reply to user4987442
    TI__Mastermind 32995 points
    Pierre, good answer.

    Please see the cla example including the CLA math examples which have flash build configurations. They demonstrate how to do this.

    Regards,
    sal