Hi there! I don't know how to get BBB's DCAN1 working, though I've been striving for quite a long time.
I installed the OS from a Debian image available at http://beagleboard.org/ and followed the guide http://dev.ardupilot.com/wiki/building-the-code/building-for-beaglebone-black-on-linux/ to make the kernel RT-Preempt: root@beaglebone:~# uname -a Linux beaglebone 3.8.13-rt9-00899-g3d8f2b1 #1 SMP PREEMPT Sat Jan 31 12:22:12 CET 2015 armv7l GNU/Linux To work with DCAN1, I also followed the guide http://www.embedded-things.com/bbb/enable-canbus-on-the-beaglebone-black/ using the suggested device tree overlay: root@beaglebone:~# modprobe can root@beaglebone:~# modprobe can-dev root@beaglebone:~# modprobe can-raw root@beaglebone:~# echo BB-DCAN1 > $SLOTS root@beaglebone:~# cat $SLOTS 0: 54:PF--- 1: 55:PF--- 2: 56:PF--- 3: 57:PF--- 4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G 5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI 6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN 7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-DCAN1 root@beaglebone:~# /sbin/ip link set can0 up type can bitrate 500000 root@beaglebone:~# ifconfig can0 up root@beaglebone:~# ifconfig can0 can0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 UP NOARP MTU:16 Metric:1 RX packets:3 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:10 RX bytes:24 (24.0 B) TX bytes:0 (0.0 B) Interrupt:71 Pins seem to be muxed correctly: root@beaglebone:~# cat $PINS | grep 984 pin 97 (44e10984) 00000032 pinctrl-single root@beaglebone:~# cat $PINS | grep 980 pin 96 (44e10980) 00000012 pinctrl-single Now, as I run a simple cansend-candump test on can0, candump doesn't get anything. Is there anyone who can help me out? Thank you Frudak -- 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
