linux-kernel - Re: iio: dht11 Updates

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Message-ID: <547F7092.8080001@nod.at>
Date:	Wed, 03 Dec 2014 21:20:34 +0100
From:	Richard Weinberger <richard@....at>
To:	Harald Geyer <harald@...ib.org>
CC:	jic23@...nel.org, knaack.h@....de, lars@...afoo.de,
	pmeerw@...erw.net, sanjeev_sharma@...tor.com,
	linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: iio: dht11 Updates

Harald,

Am 03.12.2014 um 13:18 schrieb Harald Geyer:
> Hi Richard,
> 
> thanks for all the work you put into this!
> 
> Richard Weinberger writes:
>> Please see my current patches for your driver.
>> As discussed in an earlier mail I'm testing with the DHT22 sensor only.
>> With the IRQ changes I see 84 edges.
> 
> This still surprises me. With the IRQ changes I would expect the
> preamble to be 2 edges only. I must be missing something. Can you
> explain this to me?

Did some more tests.
With my IRQ changes applied I get as stated 84 edges,
without I get 85. So we're only losing one edge.

Of course if we're too slow with registering the IRQ we'll lose
more edges and the results renders unusable.

Thanks,
//richard
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