CCS/F28M35H52C: Code goes into illegal ISR

Chinthaka Jayarathne

Part Number: F28M35H52C

Tool/software: Code Composer Studio

Hi, I have being developing an application on above mentioned micro controller for some time now. I used to load the to the RAM. However now i need to write the application to the flash,

I get 1 warning while building "#10247-D null: creating output section "ramfuncs" without a SECTIONS specification". And when i start a debug session, the code goes immediately into __interrupt void ILLEGAL_ISR(void) function.
what is the problem with this case. The code runs perfectly from RAM.

I have attached my code below

C28x_NewTest_Controller.zip

over 6 years ago

0 Ki over 6 years ago

TI__Guru**** 451431 points

Hello,
I suspect you are running into the same issue as in the thread below:
e2e.ti.com/.../746912

Thanks
ki

0 Chinthaka Jayarathne over 6 years ago in reply to Ki

Prodigy 185 points

Hi,
I am using TI v18.1.3.LTS compiler with Control Suite v220. Can this still cause that incompatibility of ".TI.ramfunc" (the new way) and "ramfuncs" (the old way) ?

0 Ki over 6 years ago in reply to Chinthaka Jayarathne

TI__Guru**** 451431 points

I will move this thread to the C2000 forum. The device experts there can answer best.

Thanks
ki

0 Manoj Santha Mohan over 6 years ago in reply to Chinthaka Jayarathne

TI__Guru 55700 points

Chinthaka,

Yes, you are correct. It is because of the incompatibility between old way and new way.

Since you are using TI v18.1.3.LTS compiler, you need to use .TI.ramfunc instead of ramfuncs. In C28x_NewTest-DPL-ISR.asm, you are using ramfuncs, you need to replace it with .TI.ramfunc

Regards,
Manoj

0 Chinthaka Jayarathne over 6 years ago in reply to Manoj Santha Mohan

Prodigy 185 points

Yes, that did the trick. Thank you very much.

C2000™︎ microcontrollers

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CCS/F28M35H52C: Code goes into illegal ISR