gnupic: Re: [gnupic] help - weird intermittent resets
Subject:
Re: [gnupic] help - weird intermittent resets
From:
Peter Onion ####@####.####
Date:
30 Jul 2005 16:03:15 +0100
Message-Id: <1122735766.5931.23.camel@HP.RoomLan>
On Sat, 2005-07-30 at 14:13 +1200, David McNab wrote:
> Hi,
>
> I'm getting a weird and frustrating problem with a pic18f252 that
> intermittently resets itself.
1) What does the asm code look like ? Anything odd in there ?
2) (This used to ask about running with s simulator but I now see it
works ok with gpsim).
3) Have you tried another chip ?
4) Have you tried a lower/higher Xtal to see if that makes a
difference ?
5) Have you tried turning wdt off in the config ?
6) Is MCLR decoupled ?
7) Are all interrupts disabled (esp. USART ones )? gpsim won't trigger
them but real hardware might.
PICs are static so a crystal that stops won't cause a reset, it will
just stop the program running until oscillations start again.
Peter
