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Starterware booting - again

Chris Wilson
Intellectual 340 points

Hi

I have managed to boot the AM335xEVM board using the SD card - no problem.  I go back to trying to boot via the UART without success.

I power up the board OK - download the bootloader (get the correct response) - I go to download the application binary as per the instructions in the documentation. The application is not downloaded the terminal program just does nothing (using TeraTerm).  also accoring to the documentation it suggests that the board should be sending CCCCC... whilst waiting fo rthe applciation - I do not see this at all.

Can anyone help?  Am I doing something wrong?

thanks

Chris

  • 0
    TI__Intellectual 2525 points

    Hi Chris,

    I hope you are using StarterWare_02_00_00_06. Also, could you please make sure that you are building the bootloader for UART boot ? The default bootloader which comes with the package is only for SD card booting. If you are building, which toolchain are you using?

    What is the message you are getting on the teraterm console?

    Regards,

    Sujith.

  • 0 in reply to Sujith KV
    Intellectual 340 points

    Hi Sujith

    Yes I am using Startetware_02_00_00_06.  According to the release notes for this they say that the bootloader supports MMCSD, NAND, UART and SPI Boot Modes.  If I need to rebuild the bootloader for the UART bootload could you give me some instructions on how to do that please?

    I am using the standard toolchain (the TI v4.9.1 compiler) with Code Composer Studio.

    The Teraterm console looks like this after I have sent the bootloader: 

    CCCCCCCCCStarterWare AM335x Boot Loader

     Unable to open application file
    Jumping to StarterWare Application...

    After the download of the bootloader is complete I try to download the application binary and the download window appears - but there is no download.

    Thanks

    Chris

  • 0 in reply to Chris Wilson
    TI__Intellectual 2525 points

    Hi Chris,

    You can import the project from /build/armv7a/cgt_ccs/am335x/evmAM335x/bootloader/  to CCS.

    Then, right click on the project,  click on  -> Build Configurations -> Set Active -> Release_UART. Now you selected UART bootmode. Re build the project and binary will be located at the same folder as before.

    Please find the details on importing and building in CCS in the below link.

    http://processors.wiki.ti.com/index.php/AM335X_StarterWare_Environment_Setup#TMS470_from_CCS_project

    Regards,

    Sujith.

  • 0 in reply to Sujith KV
    Intellectual 340 points

    Hi Sujith

    Perfect!  Thank you.

    Chris