Ruben J=F6nsson wrote:
>>
>> Ruben J=F6nsson wrote:
>>> Hi,
>>>
>>> I am using a PIC18F2525 with MPLAB 8.30 and ICD3 and I am trying to
>>> debug code using Timer1.
>>>
>>> I use an ceramic resonator at 20MHz and have set OSC=3DHS. Timer1 is
>>> configured to run in timer mode with FOSC/4 as clock. However, when I
>>> single step with timer1 on, the timer seems to be free running even when
>>> the debugger is halting the PIC. This continuously fires the timer1
>>> overflow interrupt and I get into the ISR when stepping over/into next
>>> instructions.
>>>
>>> The timer works as expected when I try the code with the simulator.
>>>
>>> So, when the debugger (ICD3) is halting the processor - should timer1
>>> continue counting?
>>>
>>> Actually, looking at Timer0 it has the same behavior - still counting
>>> when the processor is halted.
>>>
>>> Is it not possible to debug with ICD3 using a ceramic resonator as clock
>>>  source?
>> I do not know about the timer in debug, but it would surprice me
>> a lot if it doesn't work the same with a normal quarts crystal...
>>
>> Jan-Erik.
>>
> =

> So it means that you can't use an external clock source to debug peripher=
als =

> that uses FOSC as clock with ICD3? =


No. You asked about a *ceramic resonator* and I do not think
it has anything to do with that. I said nothing else then that...
-- =

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