Hi John, Thanks for your reply. You mean whatever we have to send and receive should be done via spidev1.0 only ?
*Best Regards,* *Amit Sama* On 28 August 2014 16:28, John Syn <john3...@gmail.com> wrote: > > 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 <%2B49-15214455380>* > > > > 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/ raring main universe >>> multiverse >>> > #deb-src http://ports.ubuntu.com/ubuntu-ports/ raring main universe >>> > multiverse >>> > >>> > #deb http://ports.ubuntu.com/ubuntu-ports/ raring-updates main >>> universe >>> > multiverse >>> > #deb-src 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/ precise main restricted universe >>> > multiverse >>> > deb http://archive.ubuntu.com/ubuntu/ precise-updates main restricted >>> > universe multiverse >>> > deb http://archive.ubuntu.com/ubuntu/ precise-backports main >>> restricted >>> > universe multiverse >>> > deb http://security.ubuntu.com/ubuntu precise-security main restricted >>> > universe multiverse >>> > deb http://archive.canonical.com/ubuntu precise partner >>> > deb http://extras.ubuntu.com/ubuntu precise main >>> > >>> > >>> > THESE I COPIED FROM MY DESKTOP >>> > #deb http://archive.ubuntu.com/ubuntu/ precise main restricted >>> universe >>> > multiverse >>> > #deb http://security.ubuntu.com/ubuntu/ precise-security main >>> restricted >>> > universe multiverse >>> > #deb 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 ‘size_t’ >>> >>> 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 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.
