From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Mon, 09 Dec 2013 09:06:36 +1100
From: Tom Evans <tom_usenet@optusnet.com.au>
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Subject: Re: [Xenomai] rtdm can on mpc5121e - no rtcan devices detected
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To: Andreas Gareis <andreas.gareis@hs-augsburg.de>, xenomai@xenomai.org

On 09/12/13 06:44, Andreas Gareis wrote:
> Hi Wolfgang,
>
> Thanks for your answer.
 > ...
>> RTCAN devices are not visible in /dev. It's not a character device.
>> You can find more informations in /proc/rtnet.
>
> The files "devices" and "sockets" which are located in /proc/rtcan don't
> have any entries. (/proc/rtnet doesn't exist on my system)

Did the CAN devices work before you installed Xenomai? Get them working there 
first.

On the device I'm using (Freescale i.MX53), the CAN drivers are connected via 
NETWORKING. So they don't show up in /dev, just as Ethernet doesn't show there 
either (/dev is so 1980's :-).

root@triton1:~# ls /proc/net/can
rcvlist_all  rcvlist_err  rcvlist_inv  reset_stats  version
rcvlist_eff  rcvlist_fil  rcvlist_sff  stats
root@triton1:~# ifconfig
can0      Link encap:UNSPEC  HWaddr 
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
           UP RUNNING NOARP  MTU:16  Metric:1
           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:256
           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
           Interrupt:82

can1      Link encap:UNSPEC  HWaddr 
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
           UP RUNNING NOARP  MTU:16  Metric:1
           RX packets:2527 errors:0 dropped:0 overruns:0 frame:0
           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:256
           RX bytes:19583 (19.1 KiB)  TX bytes:0 (0.0 B)
           Interrupt:83

eth0      Link encap:Ethernet  HWaddr 00:0C:C6:79:6C:6E
... And so on.

Check for interrupts:

root@triton1:~# cat /proc/interrupts
            CPU0
   6:          0      tzic  sdma
...
  64:          0      tzic  imx-i2c.2
  82:          0      tzic  can0
  83:       5832      tzic  can1
  87:     124900      tzic  imx25-fec.0


Tom