Today I tried the same procedure with Ubuntu on my BBB, but the behavior is still the same.
By the way, the bus termination is correct! Thanks On Friday, December 13, 2013 4:17:35 PM UTC+1, X .ample wrote: > > Hi all, > > we bought a BBB a few days ago. I tried to run a simple can send/receive > demo. I'm using the "out of the box" angstrom linux distribution and > activated the dcan1 according to this tutorial: > http://www.embedded-things.com/bbb/enable-canbus-on-the-beaglebone-black/. > The overlay is placed and the driver comes up as expected. My ifconfig > shows the can0 if and I could start a simple onboard loopback demo. Now we > ordered a HS-CAN transceiver (microchip MCP2551) and setup a simple > circurit and connected the CAN bus to an external stimmulator. Now to my > problem: I only can send data on the bus (even on the relatet pin on BBB) > when I initialize the CAN with loopback mode enabled, otherwise only the > first frame can be seen via a oscilloscope but the bus tracer reports an > error. All attempts to write again on the bus fail afterwards. Dmesg tells > me "c_can_platform 481d0000.d_can can0: setting BTR=1c0e BRPE=0000". > > The next problem is, when I start in loopback mode, I only can send on the > bus, but when I trigger a frame with the external bus stimulator I can see > the frame circulating on the bus (again only with the oscilloscope) but no > reception at the RXD pin of my BBB. > > Does this sound familar to any one? Thank you in advance > -- 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/groups/opt_out.
