From: Amit Sama <amitsama....@gmail.com> Reply-To: "beagleboard@googlegroups.com" <beagleboard@googlegroups.com> Date: Sunday, August 31, 2014 at 4:27 AM To: "beagleboard@googlegroups.com" <beagleboard@googlegroups.com> Subject: Re: [beagleboard] Re: Device Tree Compiler
> Hi John, > > Thanks for your reply. You mean whatever we have to send and receive should be > done via spidev1.0 only ? No, you can use any SPI interface and any chip select as long as they are defined in the devicetree. If you define the SPI device in the devicetree correctly then they will show up in /dev. Regards, John > > 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 <tel:%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/ >>>>>> <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 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. 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