TMS320F28335 error in Running MCU without Debugger

Hemanth Sundaresh

Hello ,

I am using a custom board with .
I am able to download and run a sample program(GPIO Toggle) with Debugger.

But when I remove the Debugger and Power Up the board, it doesn't work.
Similarly when I ResetCPU using Debugger, it doesn't work.
But if I restart the Program, it runs from main() withou any issue.

Based on these observation, I am suspecting some issue in HW.

I have attached the schematic, could anyone share you feedback?

thanks!!

regards,

Hemanth

over 6 years ago

0 MatthewPate over 6 years ago

TI__Guru* 84390 points

Hemanth,

Since you are power cycling the board, just want to make sure that you have programmed the flash with your code. If this is being loaded into RAM the contents will get cleared with a power down.

If the flash is programmed, I would first make sure that the boot pins are set correctly on your board to boot from flash vs other memory or peripheral.

http://www.ti.com/document-viewer/TMS320F28335/datasheet/boot-rom-litsprs230-0453#litSPRS230-0453

Once you've confirmed the above we can go from there.

Best,

Matthew

0 Hemanth Sundaresh over 6 years ago in reply to MatthewPate

Intellectual 380 points

The issue is resolved now.
One of the Boot Pins was pulled down, so it was not booting from flash.

Thanks a lot Matthew,

regards,
Hemanth

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28335 error in Running MCU without Debugger