Hi all.

Nope, problem still there. Somewhere between 2.5 and 3 hours to manifest 
this time.

Anyone? ;-)

Rolf

Rolf wrote:
> Hmmm...
>
> I found a bug in the code. I was not ensuring I was in memory bank 0 in 
> the ISR. This could have caused all sorts of problems, I guess, but, 
> could it have caused this one? The only SFR's that the ISR modifies are 
> GPIO, and TMR0 which in turn, if I was in the wrong bank, would have 
> modified TRISIO, and the OPTION register.
>
> I guess the combination of those two registers could do some pretty 
> weird things to the code, but, changes to the prescalar or TMR0 clock 
> source would have been very obvious, and changes to the TRISIO would 
> also have been noticed.... I think.
>
> Anyway, I have fixed the code, but now have to wait (forever) to see if 
> it breaks again.....
>
> Still looking for advice.
>
> Rolf
>
> Rolf wrote:
>   
>> Two additional items of information:
>>
>> To 'fix' the circuit, I disconnect the battery and wait a while before 
>> re-connecting it.
>>
>> I can unplug the magnetic switch entirely leaving the circuit open and 
>> it is still 'broken'. Also, one test showed that when working fine, 
>> with the switch disconnected, it still later 'broke'.
>>
>> Thanks again
>>
>> I can supply the source code too... actually, it is attached.
>>
>> Rolf
>>
>> Rolf wrote:
>>     
>>> Hi all.
>>>
>>> Attached is the schematic for my current project. It is a wireless 
>>> garage door monitor. It uses two magnetic switches to monitor two 
>>> garage doors, and wirelessly transmits the door state and battery 
>>> state to a receiver.
>>>       
> [snip]
>
>   
>>> Anyone have any ideas?
>>>
>>> Anyone suggest another avenue to explore?
>>>
>>> Thanks in advance
>>>
>>> Rolf
>>>       
>
>   

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