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Problem bootloader more timer0

 
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Yom Kippur



Joined: 22 Jul 2014
Posts: 3

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Problem bootloader more timer0
PostPosted: Tue Jul 22, 2014 7:21 pm     Reply with quote

Hello,

I have a problem with the code:
Code:

#include <18f4550.h>

#build (reset=0x400, interrupt=0x408)  //***Problem
#org 0x000, 0x3FF                               //***Problem         

#use delay(clock=48000000)
#use rs232(baud=57600, parity=N, xmit=PIN_C6, rcv=PIN_C7, bits=8)


#fuses MCLR
#FUSES HSPLL       
#FUSES PLL5       
#FUSES NOPROTECT



#int_timer0                             
void trata_timer0 ()                 
{
  int1 teste;                               
  int32 x;                                   
 
  set_timer0(147+get_timer0());
  x++;                                   
  if (x == 100000)                         
  {
   x = 0;                               
   teste = !teste;                       
   output_bit (pin_e2, teste);   
  }
}

void main ()
{
 setup_timer_0 (  RTCC_8_BIT | RTCC_DIV_1 );
 set_timer0(147);   
 enable_interrupts (global | int_timer0);
 while (true); 
 
}

If out the code:


//#build (reset=0x400, interrupt=0x408)  //***Problem
//#org 0x000, 0x3FF                               //***Problem

The 18F4550 is run normally.

How solve this problem? Because, others code run normally.

In moment this is unique code with problem.

Best regards.
Yom Kippur



Joined: 22 Jul 2014
Posts: 3

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PostPosted: Thu Jul 24, 2014 10:19 am     Reply with quote

I usage bootloader site http://www.picprojects.net/serialbootloader/index.html

Best regards
jeremiah



Joined: 20 Jul 2010
Posts: 1353

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PostPosted: Thu Jul 24, 2014 1:40 pm     Reply with quote

You have a typo in the code you copied from that site. Look at the #org line again on their site and compare it to yours.

EDIT:
Also, your fuses don't match those of the bootloader. That can be very dangerous. Try #fuses NONE in your code instead of the fuses you have.
Yom Kippur



Joined: 22 Jul 2014
Posts: 3

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PostPosted: Thu Jul 24, 2014 7:26 pm     Reply with quote

Hello jeremiah,

Many,many, thank for reply.

Sorry for error in code

#build (reset=0x400, interrupt=0x408)
#org 0, 0x3FF {}

I change on ccs and error equal. But I take out all fuses of code, and run in real life. On isis the program report for me the error (stack overflow is forcing device reset).

Maybe is a small adjust in code for run perfect in isis and real life.

I try make one led on 1 second after off 1 second.

I am very intrigued because when put the code of bootloader program not run in isis, and others codes ADC, LCD and more not problem on proteus or real life.

I wait one person that usage equal bootloader for test this simple code, and reply for this error, I really not understand what is happening.

More one time, many thanks for you helping me.

Best Regards,

Yom Kippur
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