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Subject: Re: Beaglebone black: are the AIN pins available with gpioctl
From: "Brian J. McGovern" <mcgovern@beta.com>
To: Luiz Otavio O Souza <lists.br@gmail.com>
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On Sat, 2014-03-15 at 02:23 -0300, Luiz Otavio O Souza wrote:
> On 15 March 2014 00:09, Brian J. McGovern wrote:
> > I'm trying to read through all the details in the Beaglebone Black
> > System Reference manual, but I don't think I've seen this particular
> > piece yet... Are the AIN pins available via gpioctl or another interface
> > in 10.0-RELEASE?
> 
> No, there is no support for the ADC on 10.0-RELEASE.
> 
> I've just tested a driver for the BBB ADC, now i need to write a man
> page and publish the code (on this ML).
> 
> If everything is fine, it will be available on -head and on 10-stable soon.
> 
> Luiz
> 
   
Luiz,
  I grabbed your patches that you posted on 17 March, and patched them
in to FreeBSD 10. Overall, the driver seems to work fine. The only issue
that I'm having is that after some period of time (it has varied from a
few minutes to over a half hour), the analog input freezes up,
continuing to provide the last reading, despite changes on the analog
input - verified via a voltage meter. The only way I've been able to
recover is to reboot.

  Obviously, I need to do some more testing and try to figure out why
its locking up, but I thought you'd like to know.

    -B