All right, just installed a fresh RC1 image. uname -a returns, as expected At the beginning there is no can bus visible through ifconfig -a, as expected. I used the Device tree editor as follows: -) drag and dropped CANBUS 1, -) pressed "SAVE", -) waited for confirmation message on screen -) rebooted. This time things looks a little better The entire dmesg can be found here http://pastebin.com/a3Qx6sSa Unfortunately ifconfig -a doesn't show any can0 device,
Hi Andrea, I have checked GPIOs and actually each line I have tested is not working. I tried with: GPIO_4 GPIO_116 GPIO_127 GPIO_124 GPIO_119 GPIO_203 it seems that they works only in input but trying with echo 1 > value after set direction to out does not change voltage on line. I think this is really strange even if not related to flexcan. I will try with a fresh OS image. @Davide, any news on this? Thanks
I just tried the RC1 image and still not able to bring up can0. I followed the instructions to set the device tree for using can0. Dmesg seems to show a big problem at boot time: http://pastebin.com/RGtXVMGd
I don't now why, and it's a big problem for me, but the fexcan drivers load correctly only if the M4 CORE IS DISABLED ! (in uEnv.txt) Can sombody tell me why ????
Dear @Jean-Philippe Suter, please have a look: https://github.com/UDOOboard/linux_kernel/commit/bc0d725642a31b71de92eaadc77ff6f3540b3822 My colleague has just added it
Did anyone figured out how to enable it on boot? Adding below entry to /etc/networking/interfaces does not do usual trick # CAN Bus auto can0 iface can0 inet manual pre-up /sbin/ip link set $IFACE type can bitrate 250000 tripple-sampling on up /sbin/ip link set up $IFACE down /sbin/ifconfig $IFACE down udooer@udooneo:~$ uname -a Linux udooneo 3.14.56-udooneo-02046-gacf7670 #7 SMP PREEMPT Tue Jan 24 10:26:38 UTC 2017 armv7l armv7l armv7l GNU/Linux EDIT: to make it work I could not use $IFACE. Here is working version below # CAN Bus auto can0 iface can0 inet manual pre-up /sbin/ip link set can0 type can bitrate 250000 triple-sampling on up /sbin/ifconfig can0 up down /sbin/ifconfig can0 down
Ok So I have been running CAN for some time on UDOObuntu 2.1.2 Minimal (14.04 LTS) and not I am trying to enable CANFD. Looks like the "ip" command is missing "fd on/off".. Needs to be updated? udooer@udooneo:~$ ip -V ip utility, iproute2-ss131122 Here is command options udooer@udooneo:~$ ip link set can0 type can help Usage: ip link set DEVICE type can [ bitrate BITRATE [ sample-point SAMPLE-POINT] ] | [ tq TQ prop-seg PROP_SEG phase-seg1 PHASE-SEG1 phase-seg2 PHASE-SEG2 [ sjw SJW ] ] [ loopback { on | off } ] [ listen-only { on | off } ] [ triple-sampling { on | off } ] [ one-shot { on | off } ] [ berr-reporting { on | off } ] [ restart-ms TIME-MS ] [ restart ] Where: BITRATE := { 1..1000000 } SAMPLE-POINT := { 0.000..0.999 } TQ := { NUMBER } PROP-SEG := { 1..8 } PHASE-SEG1 := { 1..8 } PHASE-SEG2 := { 1..8 } SJW := { 1..4 } RESTART-MS := { 0 | NUMBER } And it should be (from other hardware) [ bitrate BITRATE [ sample-point SAMPLE-POINT] ] | [ tq TQ prop-seg PROP_SEG phase-seg1 PHASE-SEG1 phase-seg2 PHASE-SEG2 [ sjw SJW ] ] [ dbitrate BITRATE [ dsample-point SAMPLE-POINT] ] | [ dtq TQ dprop-seg PROP_SEG dphase-seg1 PHASE-SEG1 dphase-seg2 PHASE-SEG2 [ dsjw SJW ] ] [ loopback { on | off } ] [ listen-only { on | off } ] [ triple-sampling { on | off } ] [ one-shot { on | off } ] [ berr-reporting { on | off } ] [ fd { on | off } ] [ fd-non-iso { on | off } ] [ presume-ack { on | off } ] [ restart-ms TIME-MS ] [ restart ] Where: BITRATE := { 1..1000000 } SAMPLE-POINT := { 0.000..0.999 } TQ := { NUMBER } PROP-SEG := { 1..8 } PHASE-SEG1 := { 1..8 } PHASE-SEG2 := { 1..8 } SJW := { 1..4 } RESTART-MS := { 0 | NUMBER } Here is kernel doc https://www.kernel.org/doc/Documentation/networking/can.txt Section 6.5.1 Netlink interface to set/get devices properties Would it be possible to get image updated at some point to support CANFD?
