Using MPLAB SIM

[koenig3456]

I tried using the MPLAB SIM debugger to debug a program that uses WPILib. I get a Stack over flow error before the main() function is reached. Is there any way to use the MPLAB SIM debugger to debug a program that uses WPILib?

[Greg Ross]

Originally Posted by koenig3456

I tried using the MPLAB SIM debugger to debug a program that uses WPILib. I get a Stack over flow error before the main() function is reached. Is there any way to use the MPLAB SIM debugger to debug a program that uses WPILib?

I don't know about WPILib, but the stack overflow error is the same that I get when I accidentally run a program compiled without the _SIMULATOR symbol defined. Set it on the MPLAB C18 tab of your project's "Build Options" dialog.

[b0b0b0b]

Thanks, this solved my problem.

[sfs]

Originally Posted by b0b0b0b

Thanks, this solved my problem.

I am getting the exact same error, even when the _SIMULATOR macro is defined in the MPLAB C18 tab. Is anyone able to use MPLAB SIM with the most recent WPILib (WPILib2k6.lib) on the FRC? I get this error message when trying:

CORE-E0001: Stack overflow error occurred from instruction at 0x0030b2

[robofan]

I solved stack overflow issue by adding the following code to ifi_frc.h:

#ifdef _SIMULATOR
#define RESET_VECTOR 0x000
#define HIGH_INT_VECTOR 0x008
#define LOW_INT_VECTOR 0x018
#else
#define RESET_VECTOR 0x800
#define HIGH_INT_VECTOR 0x808
#define LOW_INT_VECTOR 0x818
#endif

Also, you need to remove or comment out the following lines in ifi_frc.h:

//#define RESET_VECTOR 0x800
//#define HIGH_INT_VECTOR 0x808
//#define LOW_INT_VECTOR 0x818

[sfs]

Originally Posted by robofan

I solved stack overflow issue by adding the following code to ifi_frc.h:

#ifdef _SIMULATOR
#define RESET_VECTOR 0x000
#define HIGH_INT_VECTOR 0x008
#define LOW_INT_VECTOR 0x018
#else
#define RESET_VECTOR 0x800
#define HIGH_INT_VECTOR 0x808
#define LOW_INT_VECTOR 0x818
#endif

Also, you need to remove or comment out the following lines in ifi_frc.h:

//#define RESET_VECTOR 0x800
//#define HIGH_INT_VECTOR 0x808
//#define LOW_INT_VECTOR 0x818

That might work if you are using Kevin Watson's ifi_frc base code, but what about those using WPILib where no source code is available?