Ah, yes. The TT3201 cape has three CAN channels, but two of them are over SPI. This should help you out...
https://github.com/beagleboard/devicetree-source/blob/master/arch/arm/boot/dts/TT3201-001-01.dts On Thu, Sep 11, 2014 at 8:00 PM, William Hermans <yyrk...@gmail.com> wrote: > Thank Brent, However I was more curious about the bring up of the hardware > on the BBB. IS there cape file I have not noticed yet ? > If so I can probably figure it out on my own. > > On Thu, Sep 11, 2014 at 4:52 PM, Brent <brent...@hotmail.com> wrote: > >> Well, I'm not reading a guide, but I'll share a few links that helped me >> get started. I have a Qt application and I use the SocketCAN to read/write >> CAN messages. This will work with J1939 as well. >> >> https://www.kernel.org/doc/Documentation/networking/can.txt >> http://en.wikipedia.org/wiki/SocketCAN >> http://www.can-cia.org/fileadmin/cia/files/icc/13/kleine-budde.pdf >> >> On Thursday, September 11, 2014 7:44:50 PM UTC-4, William Hermans wrote: >>> >>> Brent, what guide are you reading for CAN ? I've never used CAN >>> personally, and am curious . . . >>> >>> On Thu, Sep 11, 2014 at 2:25 PM, Brent Sink <brent...@gmail.com> wrote: >>> >>>> Adding restart-ms did the trick! Thanks so much, I never knew that was >>>> even there. >>>> >>>> On Wed, Sep 10, 2014 at 8:37 PM, Devan Lai <deva...@gmail.com> wrote: >>>> >>>>> You can configure the controller to automatically recover from bus-off >>>>> conditions by setting the "restart-ms" option. >>>>> >>>>> The python-can documentation has some useful notes on socket-can and >>>>> bus-off conditions: >>>>> >>>>> http://python-can.readthedocs.org/en/latest/socketcan.html#can-errors >>>>> >>>>> >>>>> On Wednesday, September 10, 2014 9:39:21 AM UTC-7, Brent wrote: >>>>>> >>>>>> I have noticed that if I short CAN_H and CAN_L together, or if there >>>>>> is noise on the bus, the BeagleBone will stop sending and receiving CAN >>>>>> messages. When this happens, if I execute "ifconfig can0 down" and >>>>>> "ifconfig can0 up", things start working again. Is there a way to detect >>>>>> this automatically and recover? I'm using SocketCAN, but haven't found >>>>>> anything that would tell me when I get a bus off or bus heavy. >>>>>> >>>>> -- >>>>> 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/SdvoxYkgagc/unsubscribe. >>>>> To unsubscribe from this group and all its topics, send an email to >>>>> beagleboard...@googlegroups.com. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> >>>> >>>> -- >>>> -brent >>>> >>>> -- >>>> 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...@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/SdvoxYkgagc/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. > -- -brent -- 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.
