Dht11 driver problem

Dht11 driver problem

[Varka Bhadram]

Hi,


I loaded the DHT11 driver with current linus tree on my BeagleBone black, Interfaced DHT11.

While reading the DHT11 data from sys file system, its failing.

dmesg:  gpio-30 (humidity_sensor): _gpiod_direction_output_raw: tried to set a GPIO tied to an IRQ as output

Its failing because in probe function we register gpio as irq and after that while read raw making same pin as output.

Is there any updated patches to avoid this problem..?

One more thing is that this driver is not available in IIO git tree.

Any help..?

-- 
Regards,
Varka Bhadram.


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Re: Dht11 driver problem

[Harald Geyer]

Hi Varka,

Varka Bhadram writes:

> While reading the DHT11 data from sys file system, its failing.
> 
> Its failing because in probe function we register gpio as irq and
> after that while read raw making same pin as output.
> 
> Is there any updated patches to avoid this problem..?

Richard Weinberger is working on a patch series to work around this.
See https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg783710.html
for details.
 
> One more thing is that this driver is not available in IIO git tree.

I don't know what you are refering to here.

Harald

Re: Dht11 driver problem

[Jonathan Cameron]

On December 19, 2014 12:35:30 PM GMT+00:00, Harald Geyer <harald@ccbib.org> wrote:
>Hi Varka,
>
>Varka Bhadram writes:
>
>> While reading the DHT11 data from sys file system, its failing.
>> 
>> Its failing because in probe function we register gpio as irq and
>> after that while read raw making same pin as output.
>> 
>> Is there any updated patches to avoid this problem..?
>
>Richard Weinberger is working on a patch series to work around this.
>See
>https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg783710.html
>for details.
> 
>> One more thing is that this driver is not available in IIO git tree.
>
>I don't know what you are refering to here.
>
Master branch is hardly ever used. Try togreg branch for the latest. Not cgit makes it
 harder than it should be to browse particular branches so you may not be
 looking at what you think you are! It has gotten me a few times...

Jonathan
>Harald
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