Its a trap....

[granddad]

Let me say , my C code implementation is not ‘good’ It would make a ‘pro’ cry.. I’m using MPLABX 5.45 and XC16 1.60
I was about to ask ETO for help. Then realized after some hours ! I had the problem before and had found my error, but then promptly forgot. Basically my dsPIC33EV code compiled without errors. and ran in Debug till it hit the error line. ( a missing argument on an array .. char Loco_register[9][16]; )then halted with little indication why.

The STACK window reported

No source code lines were found at current PC ( some Hex address). Open program memory view to see.

The memory view of the address and line number was little help , just a BREAK and RESET inserted by the compiler I guess.
#include “traps.c” was what I was missing. Now I see an Address Error trap, had halted the run . And lead me to my amateur error .

Thought I would post anyway..

/***********************************************************************
 * This file provides a basic template for writing dsPIC30F trap       *
 * handlers in C language for the C30 compiler                         *
 *                                                                     *
 * Add this file into your MPLAB project. Build your project, program  *
 * the device and run. If any trap occurs during code execution, the   *
 * processor vectors to one of these routines.                         *
 *                                                                     *
 * For additional information about dsPIC architecture and language    *
 * tools, refer to the following documents:                            *
 *                                                                     *
 * MPLAB C30 Compiler User's Guide                        : DS51284    *
 * dsPIC 30F MPLAB ASM30, MPLAB LINK30 and Utilites                    *
 *                                           User's Guide : DS51317    *
 * Getting Started with dsPIC DSC Language Tools          : DS51316    *
 * dsPIC 30F Language Tools Quick Reference Card          : DS51322    *
 * dsPIC 30F 16-bit MCU Family Reference Manual           : DS70046    *
 * dsPIC 30F General Purpose and Sensor Families                       *
 *                                           Data Sheet   : DS70083    *
 * dsPIC 30F/33F Programmer's Reference Manual            : DS70157    *
 *                                                                     *
 * Template file has been compiled with MPLAB C30 v3.00.               *
 *                                                                     *
 ***********************************************************************
 *                                                                     *
 *    Author:                                                          *
 *    Company:                                                         *
 *    Filename:       traps.c                                          *
 *    Date:           04/11/2007                                       *
 *    File Version:   3.00                                             *
 *    Devices Supported:  All PIC24F,PIC24H,dsPIC30F,dsPIC33F devices  *
 *                                                                     *
 **********************************************************************/

#ifdef __dsPIC30F__

        #include "p30fxxxx.h"

#endif

#ifdef __dsPIC33F__

        #include "p33Fxxxx.h"

#endif

#ifdef __PIC24F__

        #include "p24Fxxxx.h"

#endif

#ifdef __PIC24H__

        #include "p24Hxxxx.h"

#endif


#define _trapISR __attribute__((interrupt,no_auto_psv))

/* ****************************************************************
* Standard Exception Vector handlers if ALTIVT (INTCON2<15>) = 0  *
*                                                                 *
* Not required for labs but good to always include                *
******************************************************************/
void _trapISR _OscillatorFail(void)
{

        INTCON1bits.OSCFAIL = 0;
        while(1);
}

void _trapISR _AddressError(void)
{

        INTCON1bits.ADDRERR = 0;
        while(1);
}

void _trapISR _StackError(void)
{

        INTCON1bits.STKERR = 0;
        while(1);
}

void _trapISR _MathError(void)
{

        INTCON1bits.MATHERR = 0;
        while(1);
}




/* ****************************************************************
* Alternate Exception Vector handlers if ALTIVT (INTCON2<15>) = 1 *
*                                                                 *
* Not required for labs but good to always include                *
******************************************************************/
void _trapISR _AltOscillatorFail(void)
{

        INTCON1bits.OSCFAIL = 0;
        while(1);
}

void _trapISR _AltAddressError(void)
{

        INTCON1bits.ADDRERR = 0;
        while(1);
}

void _trapISR _AltStackError(void)
{

        INTCON1bits.STKERR = 0;
        while(1);
}

void _trapISR _AltMathError(void)
{

        INTCON1bits.MATHERR = 0;
        while(1);
}

 

[simple-simon]

It took me 4 hours to get MPLABX and XC8 installed , then another hour to install and get MCC generator added. But I do like the code generator, its handy to read through the code and see how they set things up.