CCS/TMS320F28375D: Interrupts disabled on soft reset

npaine

Tool/software: Code Composer Studio

I'm working with a project that is exhibiting some odd behavior. The code is very simple, basically just calls Device_init(), enables a few timer interrupts, calls InitFlash() and then spins in a while loop forever. When I load this program via the CCS debugger, and watch counters in the timer ISR's they count up the first time I run the program. However, when I reset the CPU in the CCS debugger via Run>Reset>CPU_Reset and then Run>Restart, the interrupt ISR's no longer get called (counters stay at zero). Any ideas what could cause this behavior?

over 5 years ago

0 Hareesh Janakiraman over 5 years ago

TI__Guru* 95315 points

Where is the code run from? RAM or Flash?

0 npaine over 5 years ago in reply to Hareesh Janakiraman

Intellectual 420 points

Its run from flash.

0 Hareesh Janakiraman over 5 years ago in reply to npaine

TI__Guru* 95315 points

Are you sure your code is running? When you stop the code, where is the program counter? Have you checked if your bootmode is configured for flash?

0 npaine over 5 years ago in reply to Hareesh Janakiraman

Intellectual 420 points

Yes, the code is running. There is a counter in the foreground while loop that increments as expected, even after the soft reset. The boot mode is configured for Get Mode, and if I power cycle the board the interrupts appear to function as expected (based on an led toggle present in one of the timer ISRs).

We have changed our memory linker command file quite a bit from the default TI file. That's one thing I'm skeptical of.

0 Hareesh Janakiraman over 5 years ago in reply to npaine

TI__Guru* 95315 points

Please make the changes to your linker command file progressively to see where it breaks down. I am afraid I may not be help further.

0 npaine over 5 years ago in reply to Hareesh Janakiraman

Intellectual 420 points

Thanks for the input Hareesh. We found the problem, it was some user code that didn't initialize a global variable correctly.

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CCS/TMS320F28375D: Interrupts disabled on soft reset