[PD] hid without polling

[Peter Plessas]

Thanks, i was on a wrong route. The summing up made sense. And it showed 
that the device's relative data is not really useful. You might be off 
by 180 degrees after spinning it around for some time.

cheers,

Hans-Christoph Steiner wrote:
> 
> I am not sure what you'd use the time for.  You could just keep a 
> running total of the relative values and use that as the absolute 
> position.  That griffin knob gives strange data, so I found it wasn't 
> very easy to use.
> 
> .hc
> 
> On Jun 2, 2009, at 7:19 PM, Peter Plessas wrote:
> 
>> Hi list,
>>
>> i have an endless rotary encoder (Griffin Powermate) which i want to 
>> use along the [hid] external. Since the encoder only gives a relative 
>> value, it is very important to know, when those relative changes 
>> occur. I wonder if there is a way to get the values from the [hid] 
>> without polling it. Or is there some basic concept behind it which has 
>> to poll it?
>>
>> Any ideas are very welcome!
>>
>> Peter
>>
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> 
> 
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> related to the telescope.      -Edsger Dykstra
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