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CCS/EK-TM4C123GXL: TM4C123GH6PGE

Part Number: EK-TM4C123GXL

Tool/software: Code Composer Studio

Hi -

I have a flash bootloader running on the EK-TM4C123GXL that is able to load an application to address 0x2800 (APP_START_ADDRESS=VTABLE_START_ADDRESS=0x2800) and jump to the application successfully. That's great. Then,  in bl.config.h, I changed the application address to APP_START_ADDRESS=VTABLE_START_ADDRESS=0x4000 and also changed APP_BASE in the application's linker cmd file to 0x4000 (new length=0x3c000). That doesn't seem to work. In fact, I tried using a few different addresses making sure they're "page-aligned". The other addresses still didn't work. Any idea why the bootloader appears to work only with address 0x2800?

Thanks in advance for your help

Regards,

Kens