MPLAB: over 150 lines, it crashed

a.mattioli · Joined: 19 Jun 2007 Posts: 4

I use MPLAB IDE 7.52 with PCWH 4.042. The device is PIC16F877.
My program restart itself when I add new lines of code (apparently) without a logic reason. In fact, I comment some istruction and the program work normally but if I not comment these istruction but other the program continue to work. Then, when I write 150 lines of the code the program crashed.
I would know why happened this problem.
I use for the programmer and debugger ICD2 but this is setting automatically and when I have set manually it not change.

My configuration bits and library are:
#include <16F877.h> //RAM = 368 byte
#device adc=8
#device ICD=TRUE
#FUSES WDT //Watch Dog Timer
#FUSES HS //High speed Osc (> 4mhz)
#FUSES NOPUT //No Power Up Timer
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOBROWNOUT //No brownout reset
#FUSES NOLVP //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOCPD //No EE protection
#use delay(clock=20000000)
#use rs232(baud=9600, parity=N, xmit=PIN_C6, rcv=PIN_C7, stream=, bits=8)
#include <stdio.h>

When I compile its: MPLAB Output -->
Memory usage: ROM=25% RAM=36% - 44%

Perhaps, I must set some options into MPLAB?

Please, help me

Humberto · Posted: Mon Jun 25, 2007 10:22 am

1) What do you suppose we can do with the info you give us ?
2) If you believe that it is an MPLAB related problem, did you ask this in the MPLAB forum ?

Humberto

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

Which program crashes ?

Is it:

1. MPLAB crashes, during compilation with CCS.

2. CCS compiler crashes, during compilation in MPLAB.

3. MPLAB simulator crashes while simulating the compiled CCS program.

4. Your program crashes while running in an actual PIC.

a.mattioli · Joined: 19 Jun 2007 Posts: 4

PCM programmer:
my program crashes while running in an actual PIC: its reboot continually

ckielstra · Joined: 18 Mar 2004 Posts: 3680 Location: The Netherlands

You have the watchdog enabled. Does the program still crash when you disable the watchdog?

a.mattioli · Joined: 19 Jun 2007 Posts: 4

I have disabled Watch DogTimer, but I don't resolve the problem. Then I think that the problem is the serial comunication.
I use RTOS with:

#use rtos(timer=1,minor_cycle= 5 ms)
#task(rate= 5 ms,max= 5 ms) //first and only task

Into this task I send to RS232 many string and I control also the input and output signal:

printf("Hello World!");

I have prove to stand up the time_ticks but not change.

Where is the problem?
Thank you