Dear BAJ,

The bootloader asm source v2.2 from

http://www.workingtex.com/htpic/PIC_bootloader.htm

already include the necessary clrwdt command. In the source code I just set
"#define WATCHDOGTIMER 1" Then the code should works. The complete asm code
only 2kB size but I don't think it's welcome to circulate file in PIClist,
otherwise u can understand my problem, and help me to solve it.

Thanks in advance
Ken


>From: Byron A Jeff <byron@CC.GATECH.EDU>
>Reply-To: pic microcontroller discussion list <PICLIST@MITVMA.MIT.EDU>
>To: PICLIST@MITVMA.MIT.EDU
>Subject: Re: [PIC]:Bootloader doesn't run when watchdog enable
>Date: Sun, 3 Feb 2002 12:26:12 -0500
>
>On Sun, Feb 03, 2002 at 11:05:51AM -0500, To Ken wrote:
> > Dear all,
> >
> > I try the bootloader which coming from
> >
> > http://www.workingtex.com/htpic/PIC_bootloader.htm
> >
> > with my PIC16F876, running at 2MHz. Since the 2MHz fosc hex is not
> > available, I assemble the hex by my self base on the bootloader asm
source
> > ver2.2
> >
> > If the watchdog NOT flag not turn on, then the bootloader run without
any
> > problems. But if watchdog is on, then nothing run. Would any one help?
> > Becase my design need watch running.
>
>Sounds simple enough. The bootloader isn't clearing the WDT so the PIC
>keeps resetting in bootloader mode. You need to examine the source of
>the bootloader and determine where it's wait loop is. You then insert a
>'clrwdt' instruction there, reassemble and reload.
>
>Hope this helps,
>
>BAJ
>
>--
>http://www.piclist.com hint: The PICList is archived three different
>ways.  See http://www.piclist.com/#archives for details.
>
>




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