TMS320F28027F: Breakpoint inactive in interrupt routine mainISR()

Mika Bay

Part Number: TMS320F28027F

I am having a strange issue with breakpoint: In lab1 if i setup a breakpoint inside mainISR() the code halts, however, if I do the same in lab2, the code doesn't halt at that point. The breakpoint inside main()function works as expected in both labs. The code in lab2 does go inside interrupt routine as motor runs. Is this normal or is there anything wrong with my code/setting here?

over 8 years ago

0 Sean Bigley over 8 years ago

TI__Genius 17175 points

You should be able to debug while inside the ISR. Sometimes there is an issue where a debug set during run-time does not properly trigger. I usually correct this by setting it in CCS edit mode and then entering a debug session. Re-toggling the breakpoint can usually fix this issue for me.

Sean

0 Mika Bay over 8 years ago in reply to Sean Bigley

Intellectual 600 points

Thanks Sean,

I found out that if I comment out

#ifdef FLASH
#pragma CODE_SECTION(mainISR,"ramfuncs");
#endif

above lines in any instaspin project ( Lab1 doesn't have these lines, but others have), the debugging works as expected, can you guess any possible reason why these lines need to be commented out?

0 Sean Bigley over 8 years ago in reply to Mika Bay

TI__Genius 17175 points

I don't see why this would make a difference, as those lines only tell the compiler where to place the mainISR function in RAM when loading from FLASH. Are you debugging your code with Silicon Real-Time Mode enabled?

Sean

0 Mika Bay over 8 years ago in reply to Sean Bigley

Intellectual 600 points

Yes, I am debugging with Real Time mode enabled. Does that explanation anything?

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TMS320F28027F: Breakpoint inactive in interrupt routine mainISR()