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Original question:

TM4C123GH6PM: Programming with XDS200 and CCS

LAUNCHXL-F280049C: PLL is not locking while doing initialisation process when running from flash memory with DCL and sfra libraries included

Mohan Nagella
Prodigy 90 points
Part Number: LAUNCHXL-F280049C
Other Parts Discussed in Thread: SFRA, C2000WARE

Tool/software:

Hello,

I took the example project BOOSTXL-BUCKCONV and trying to understand how the logic has been implemented. I am implementing my own controller and so created a new project by taking this example project as reference.

I have configured adc ports and can read out the data from peripherals. Now I included DCL and sfra libraries in include paths of both compiler and linker

and also .cmd file which basically runs from flash in the provided example. Now when I am trying to debug by loading the program on flash memory nothing really happens. When I pause the debugging then the control was stuck inside the while loop which was trying to do PLL lock.

I dont understand why this happens when I was trying to debug on FLASH but no issue happens when I am debugging on RAM memory.

  • 0
    TI__Mastermind 19561 points

    Hi Mohan,

    Do you have FLASH added in your predefined symbols? Typically this is automatically included when you use the flash build configurations provided in our standard C2000Ware examples, where you wouldn't usually need to add in the flash linker command file. FLASH predefined symbol would indicate to the device.h initialization script to initialize the necessary hooks to enable running from flash

    Regards,

    Peter

  • 0 in reply to Peter Luong1
    Prodigy 90 points

    Hello Peter,

    I figured it out later but as u suggested I missed to include FLASH in predefined symbols, It works now. Thanks alot for your response.