TMS320F28P659DK-Q1: Resident bootloader and FreeRTOS application

Luciano Vittori

Prodigy 70 points

Part Number: TMS320F28P659DK-Q1

Tool/software:

Dear TI experts,

I have developed a custom resident flash kernel based on your DCAN flash kernel example.

It had been working well until I added FreeRTOS to my application.

In short, when the application receives a RESET, it successfully resets and the resident bootloader starts running. After that, regardless of whether the timeout to jump to the application is reached or if new software is downloaded, in both cases, the application gets stuck upon starting.

This behavior only appeared after I added FreeRTOS to the application software.

Is this information sufficient for you to help me understand what I am not taking into account? Could this issue be related to RAM that is not being cleaned?

If I turn off and then turn on the board at this point, the application starts successfully.

Thank you in advance,
Best Regards,
Luciano

3 months ago

0 Alex Wasinger 3 months ago

TI__Intellectual 2520 points

Hi Luciano,

Are you able to determine where the application gets stuck? Is it exiting the kernel successfully, getting stuck in the application initialization, etc.?

Best,
Alex

0 Luciano Vittori 3 months ago in reply to Alex Wasinger

Prodigy 70 points

Hello Alex,

Thank you for your prompt response.

I've attempted to debug the software, but I haven't been successful. I understand that I need to load the program's symbols, which were downloaded by the flash kernel (bootloader), but I don't know how to do this.

Best,
Luciano

0 Alex Wasinger 3 months ago in reply to Luciano Vittori

TI__Intellectual 2520 points

Hi Luciano,

The load symbols menu can be accessed here in CCS:

Best,

Alex

0 Luciano Vittori 3 months ago in reply to Alex Wasinger

Prodigy 70 points

Hi Alex,

To make sure I understand, should I start a debug session of my Flash Kernel software, then load the application's symbols, program the new software with my host application, and check where the software becomes blocked?

Is that correct?

Thank you,
Luciano

0 Alex Wasinger 3 months ago in reply to Luciano Vittori

TI__Intellectual 2520 points

Hi Luciano,

Go through the process as normal. When the device becomes stuck, connect to it in CCS, pause execution, and load the symbols for your application. If what you see doesn't make sense, try loading the symbols for the flash kernel instead.

Best,

Alex

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TMS320F28P659DK-Q1: Resident bootloader and FreeRTOS application