AVR-Chat

I am guessing he means by "operating uncaused" that the interrupt is
getting interrupted unintentionally by the noise, i.e. what is
supposed to cause the interrupt is not what is causing it.

Also, yes, I think he means driving a DC motor. If there's a motor
involved, there's likely to be noise.

Without seeing the circuit, it's hard to say what's happening. The
group doesn't allow attachments, so if one was attached it didn't make
it. It is best to upload the attachment into the files or photos
section of the webpage.

Some inductors may be needed for filtering as well as capacitors.

Zack


On 10/10/12, Jim Wagner <wagnejam99@comcast.net> wrote:
> There is not enough information to provide any help.
>
> What is PD3 connected to?
>
> Why do you have an interrupt for PD3?
>
> What do you mean by "operating uncaused"? Every action must have a cause!
>
> What do you mean by "driving a dc motor in the interrupt"? (I assume you
> mean driving instead of deriving).
>
> Jim Wagner
> Oregon Research Electronics
>
> On Oct 9, 2012, at 12:50 PM, Elham B wrote:
>
>> noise!!!
>> my project is with micro avr,atmega32.
>> pinD.3 , external interrupt ,operating uncaused!!
>> because of noise!!
>> I deriving a dc motor in the interrupt ,
>> i using capacitors in every where that was nesseccery for solving this
>> problem...
>> pleesssee help meeeee :-(
>> what can i do????
>>
>>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
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