Hi,
On 05/06/2015 12:57 PM, Christoffer Holmstedt wrote:
I'm currently setting up my dev/test environment to get a "default"
working state to build upon but have stumbled upon some issues on the
way. I'm currently running Raspbian with latest bluetooth-next kernel.
U-Boot from last november. For libnl I use the default packages
available in Raspbian repository. wpan-tools I've checked out the 0.4
release from git repository.
U-Boot: 2014-11-10 [1]
Raspbian version: 2015-02-16 (originally built with 3.18 kernel)
Bluetooth-next kernel 4.1.0-rc1+ 2015-04-30 [2]
libnl-3-dev version: 3.2.7-4 (Raspbian repository)
libnl-genl-3-dev version: 3.2.7-4 (Raspbian repository)
wpan-tools (tag: wpan-tools-0.4) [3]
Is this set of libraries/tools ever going to work together or do I
have an obvious mismatch that will for sure fail?
### command failed: Device or resource busy (-16)
The problem I have now is that when I try to set pan_id as described
on wpan.cakelab.org I get "resource is busy" error. I also have two
wpan interfaces which I'm not sure is what I should expect, as only
one transceiver is connected to the RPi.
$ sudo iwpan --debug dev wpan0 set pan_id 0xbeef (almost identical
response for wpan1)
-- Debug: Sent Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 36
.nlmsg_type = 21 <0x15>
.nlmsg_flags = 5 <REQUEST,ACK>
.nlmsg_seq = 1430895752
.nlmsg_pid = 12459
[PAYLOAD] 20 octets
0a 00 00 00 08 00 03 00 02 00 00 00 06 00 09 00 ef be ..................
00 00 ..
--------------------------- END NETLINK MESSAGE ---------------------------
-- Debug: Received Message:
-------------------------- BEGIN NETLINK MESSAGE ---------------------------
[HEADER] 16 octets
.nlmsg_len = 56
.nlmsg_type = 2 <ERROR>
.nlmsg_flags = 0 <>
.nlmsg_seq = 1430895752
.nlmsg_pid = 12459
[ERRORMSG] 20 octets
.error = -16 "Device or resource busy"
[ORIGINAL MESSAGE] 16 octets
.nlmsg_len = 16
.nlmsg_type = 21 <0x15>
.nlmsg_flags = 5 <REQUEST,ACK>
.nlmsg_seq = 1430895752
.nlmsg_pid = 12459
--------------------------- END NETLINK MESSAGE ---------------------------
command failed: Device or resource busy (-16)
### iwpan dev and ifconfig gives me the following information:
$ iwpan dev
phy#1
Interface wpan1
ifindex 3
wpan_dev 0x100000001
extended_addr 0x4507b443ff180a33
short_addr 0xffff
pan_id 0xffff
type node
max_frame_retries -1
min_be 3
max_be 5
max_csma_backoffs 4
lbt 0
phy#0
Interface wpan0
ifindex 2
wpan_dev 0x1
extended_addr 0x0000000000000000
short_addr 0xffff
pan_id 0xffff
type node
max_frame_retries -1
min_be 3
max_be 5
max_csma_backoffs 4
lbt 0
$ ifconfig
wpan0 Link encap:UNSPEC HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
UP BROADCAST RUNNING NOARP MTU:127 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:300
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
wpan1 Link encap:UNSPEC HWaddr
45-07-B4-43-FF-18-0A-33-00-00-00-00-00-00-00-00
UP BROADCAST RUNNING NOARP MTU:127 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:300
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
### Instructions available
The most up to date instructions I have found are from august last
year and outdated (openlabs.co), has anyone else written a blog post
or similar on how to get a working setup running?
[1] https://github.com/swarren/u-boot/tree/4f70244e0a1a0d68cf3c5493998ff3565f38d825
[2] https://git.kernel.org/cgit/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=1add15646672ff4e7fe59bec2afcb5a0c80c5e49
[3] https://github.com/linux-wpan/wpan-tools/releases/tag/wpan-tools-0.4
Regards
Similar issue faced by the community previously. see thread at [1].
The surprising thing is you got two interfaces for single h/w device.
Guido Günther wrote a blog at [2] for setup.
[1]: http://www.spinics.net/lists/linux-wpan/msg01593.html
[2]: https://honk.sigxcpu.org/piki/hw/rpi6lowpan/
--
Varka Bhadram
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