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LM4F232 Kit USB bootloader

Santosh PG
Expert 1590 points

Hi,

I am using using LM4F232 kit and working on USB boot loader, I have selected boot_demo2 sample code to test the DFU functionality, after loading the code from CCS and pressing the switch SW5 on the board port gets detected in LM flash programmer and will be able to load the code from the USB port.

Suppose If we dont upgrade any new firmware and if we just reset the device nothing displays on OLED and again need to download code from CCS(doesnt works if we load the .bin file from LM Flash programmer i.e can load the code but nothing displays).

Please let us know if we are missing anything??

Best Regards,

Santosh.

 

  • 0
    TI__Intellectual 2360 points

    Hello Santosh,

    When you are running LM Flash Programmer do you have the Erase entire flash option selected?  If you go to the programming tab, you should be able to select "Erase Necessary Pages" and then set your offset for the programming start.  That should preserve the bootloader.

    Hope that helps.

    -c