My program always crashes because the following statement?

Maybe you could try breaking down that line of code a bit further:

temp1 = 3.14 * sampleTime * CpuTimer0.InterruptCount;

temp2 = sin(temp1);

setpoint = 1.7 + 0.5*temp2;

Perhaps that will help give a clue as to what is going wrong.

Brad

Could anyone tell me how to find the PIE Group and Number that causes the Illegal ISR?

That ISR corresponds to ITRAP.  It happens when the CPU tries to execute an illegal opcode.  Is your stack big enough?  Perhaps the CPU is going off into the weeds.  What are your compiler and linker options?

Thank you very much first.

How to check and increase my stack?

How to prevent the CPU going off into the weeds?

I'm not familiar with these stuffs.

Go to Project -> Build Options -> Linker.  Your stack size is shown there.  Please copy paste those options here as well as the compiler options for review.

Great. Thank you very much.

I can't try it now because I'm not in my office.

If i increase the stack size, will the problem disappear?

I hope so![:D]

Increasing the stack size could very well fix your issue.  I guess it depends on what is causing the issue to begin with!  For example, it could be that the sine function is adjacent in memory to the stack and that a stack overflow has caused the instructions to be corrupted.  If that's the case then increasing your stack will fix the issue.

Are you using DSP/BIOS?  If so, then you need to be careful about task stacks too.

You also need to be sure in your project options that you've selected a standard 28x core and not the new floating point core or else that could cause this sort of thing too.

Hi,I'm contronting the same problem with you . However  the solution by increasing the size of STACK didn't fix my problems.

Could anyone offer other suggestions?

Best wishes!