From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp2-g21.free.fr ([2a01:e0c:1:1599::11]) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1RvYxZ-0006zL-KL for barebox@lists.infradead.org; Thu, 09 Feb 2012 18:43:10 +0000 Date: Thu, 9 Feb 2012 19:43:01 +0100 From: Eric =?ISO-8859-1?B?QuluYXJk?= Message-ID: <20120209194301.75adb5dc@eb-e6520> In-Reply-To: References: <20120209174519.4d0ae559@eb-e6520> Mime-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: how to read GPIO values from command line? To: barebox@lists.infradead.org Le Thu, 9 Feb 2012 13:37:34 -0500 (EST), "Robert P. J. Day" a =E9crit : > On Thu, 9 Feb 2012, Eric B=E9nard wrote: > = > > Le Thu, 9 Feb 2012 11:34:55 -0500 (EST), > > "Robert P. J. Day" a =E9crit : > > > 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. > = > how do i do that from the barebox prompt? i can see the > gpio-related commands for setting direction and getting/setting > values, but how does one check if those pins are properly in gpio > mode? > = see the corresponding registers with md Eric -- = http://eukrea.com/en/news/104-2012 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox