From: "Eric Bénard" <eric@eukrea.com>
To: barebox@lists.infradead.org
Subject: Re: how to read GPIO values from command line?
Date: Thu, 9 Feb 2012 17:45:19 +0100 [thread overview]
Message-ID: <20120209174519.4d0ae559@eb-e6520> (raw)
In-Reply-To: <alpine.DEB.2.02.1202091130540.14123@oneiric>
Le Thu, 9 Feb 2012 11:34:55 -0500 (EST),
"Robert P. J. Day" <rpjday@crashcourse.ca> a écrit :
> so what exactly does one do to read those values? i tried:
>
> barebox@Texas Instrument's Beagle:/ gpio_direction_input 171
> barebox@Texas Instrument's Beagle:/ gpio_get_value 171
>
> but what do i check? the shell variable $? i'm not sure what i
> should do next.
>
you can check the mux of the pins to be sure they are in GPIO mode.
Eric
--
http://eukrea.com/en/news/104-2012
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next prev parent reply other threads:[~2012-02-09 16:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-09 16:34 how to read GPIO values from command line? Robert P. J. Day
2012-02-09 16:45 ` Eric Bénard [this message]
2012-02-09 17:32 ` Robert P. J. Day
2012-02-09 18:37 ` Robert P. J. Day
2012-02-09 18:43 ` Eric Bénard
2012-02-09 18:54 ` Robert P. J. Day
2012-02-10 7:34 ` Sascha Hauer
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