From: Amit Sama <amitsama....@gmail.com> Reply-To: "beagleboard@googlegroups.com" <beagleboard@googlegroups.com> Date: Thursday, August 28, 2014 at 7:49 AM To: "beagleboard@googlegroups.com" <beagleboard@googlegroups.com> Subject: Re: [beagleboard] Re: Device Tree Compiler
> Hi all, > > Thanks for your support till now. I am really grateful to you. > > While I going through the reference manual of the arm processor on the BBB, I > came to know that the processor has the capacity for 4 SPI channels but BBB > only provides 2 channels. > > 1) So I want to know if spidev1.0 and spidev1.1 are the interfaces for just > one channel (because I have read the spidevB.C means channel B and device C) > why are they two in number. Does these files represent the SLAVES which could > be attached with this channel ? I believe that is SPI Channel and SPI Chip Select. Regards, John > > And please understand that I am not yelling or complaining. I am just new to > this kind of thing. While reading the material through web I gets answers but > also get questions. I hope you all don't mind my questions. I apologize if you > do. > > > > Best Regards, > Amit Sama > Pursuing M.Sc. Informatics > Technical University Munich > Contact : +49-15214455380 > > > > On 28 August 2014 01:31, William Hermans <yyrk...@gmail.com> wrote: >>> What can be the meaning here? >> >> Learn how to use your tools before half fast using / complaining about them ? >> >> >> On Wed, Aug 27, 2014 at 12:55 PM, 'Mark Lazarewicz' via BeagleBoard >> <beagleboard@googlegroups.com> wrote: >>> What can be the meaning here?Sent from Yahoo Mail on Android >>> <http://overview.mail.yahoo.com/mobile/?.src=Android> >>> >>> >>> >>> >>> >>> >>> From: Robert Nelson <robertcnel...@gmail.com>; >>> To: Beagle Board <beagleboard@googlegroups.com>; >>> Subject: Re: [beagleboard] Re: Device Tree Compiler >>> Sent: Wed, Aug 27, 2014 7:18:21 PM >>> >>> >>> >>> On Wed, Aug 27, 2014 at 4:39 AM, Amit Sama <amitsama....@gmail.com> wrote: >>>> > Hi Robert, >>>> > >>>> > Though I managed to enable the spi interface on my BB. I have following >>>> > questions/information: >>>> > >>>> > 1) I have following urls in /etc/apt/sources.list >>>> > >>>> > THESE WERE EARLIER IN THE BBB >>>> > >>>> > #deb http://ports.ubuntu.com/ubuntu-ports/ >>>> <http://ports.ubuntu.com/ubuntu-ports/> raring main universe multiverse >>>> > #deb-src http://ports.ubuntu.com/ubuntu-ports/ >>>> <http://ports.ubuntu.com/ubuntu-ports/> raring main universe >>>> > multiverse >>>> > >>>> > #deb http://ports.ubuntu.com/ubuntu-ports/ >>>> <http://ports.ubuntu.com/ubuntu-ports/> raring-updates main universe >>>> > multiverse >>>> > #deb-src http://ports.ubuntu.com/ubuntu-ports/ >>>> <http://ports.ubuntu.com/ubuntu-ports/> raring-updates main universe >>>> > multiverse >>>> > >>>> > >>>> > THESE I COPIED FROM THE link IN ORDER TO SOLVE THE PROBLEM >>>> > >>>> > deb http://archive.ubuntu.com/ubuntu/ >>>> <http://archive.ubuntu.com/ubuntu/> precise main restricted universe >>>> > multiverse >>>> > deb http://archive.ubuntu.com/ubuntu/ >>>> <http://archive.ubuntu.com/ubuntu/> precise-updates main restricted >>>> > universe multiverse >>>> > deb http://archive.ubuntu.com/ubuntu/ >>>> <http://archive.ubuntu.com/ubuntu/> precise-backports main restricted >>>> > universe multiverse >>>> > deb http://security.ubuntu.com/ubuntu >>>> <http://security.ubuntu.com/ubuntu> precise-security main restricted >>>> > universe multiverse >>>> > deb http://archive.canonical.com/ubuntu >>>> <http://archive.canonical.com/ubuntu> precise partner >>>> > deb http://extras.ubuntu.com/ubuntu <http://extras.ubuntu.com/ubuntu> >>>> precise main >>>> > >>>> > >>>> > THESE I COPIED FROM MY DESKTOP >>>> > #deb http://archive.ubuntu.com/ubuntu/ >>>> <http://archive.ubuntu.com/ubuntu/> precise main restricted universe >>>> > multiverse >>>> > #deb http://security.ubuntu.com/ubuntu/ >>>> <http://security.ubuntu.com/ubuntu/> precise-security main restricted >>>> > universe multiverse >>>> > #deb http://archive.ubuntu.com/ubuntu/ >>>> <http://archive.ubuntu.com/ubuntu/> precise-update main restricted >>>> > universe multiverse >>>> > >>>> > NONE OF THEM WORKS, DO TELL ME WHAT ARE THE RIGHT URLS >>> >>> "Yelling" isn't going to fix this problem, either is random coping the >>> right URLS's. >>> >>> So to repeat: >>> >>> <quote> >>> So at this point, i'm just going to say... "You" totally hosed your OS >>> doing some random stuff, that why it doesn't work.. >>> >>> Start over with a fresh image. >>> </quote> >>> >>>> > 2) I could see these two files in /dev/spidev1.0 and /dev/spidev1.1 . >>>> Though >>>> > I configures for the spi0 channel I think it should be like spidev0.0 and >>>> > spidev0.1 >>> >>> Nope it isn't.. >>> >>>> > 3) In order to check if I have configured the spidev correctly, I copied a >>>> > file from here >>>> > >>>> > http://osdir.com/ml/beagleboard/2013-05/msg00813.html >>>> > >>>> > NOW WHEN I compile it using >>>> > >>>> > >>>> > gcc -c spidev_test.c >>>> > >>>> > It gives error like >>>> > >>>> > /usr/include/libio.h:334:3: error: unknown type name OEsize_t¹ >>> >>> Really! "It gives error like" considering "size_t" isn't in that >>> source. Your definition of "like" is way different!!! Wow.. >>> >>> Regards, >>> >>> -- >>> Robert Nelson >>> http://www.rcn-ee.com/ >>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google Groups >>> "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to beagleboard+unsubscr...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >>> >>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google Groups >>> "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to beagleboard+unsubscr...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to a topic in the Google >> Groups "BeagleBoard" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/beagleboard/zQ039ckqp3E/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> beagleboard+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
