2015-07-24 15:07 GMT+02:00 Alexander Aring <alex.aring@xxxxxxxxx>:
> On Fri, Jul 24, 2015 at 02:53:52PM +0200, Baptiste Clenet wrote:
> ...
>>
>> Yes if SAC = 1, SAM should be 0 I agree.
>>
>> Is that somehow possible that I send ihpc of 7b39 (taken at the end of
>> lowpan_header_compress) and I receive and iphc of 7bf9 (taken at the
>> begginning of lowpan_header_decompress) every time??
>>
>
> So far I know that is not possible. I think you need to debug it, do you
> have maybe some kind of monitor interface to see what on the air?
>
Here is what tcpdump gives me when I receive a message:
13:15:40.253868 P ethertype Unknown (0x00f6), length 82:
0x0000: 41c8 13ef beff ff56 7863 ed54 89a7 cffb A ......Vxc.T....
0x0010: f93a 0201 ff34 1234 8700 a5ee 0000 0000 .:...4.4........
0x0020: fe80 0000 0000 0000 1234 1234 1234 1234 .........4.4.4.4
0x0030: 0102 cfa7 8954 ede3 7856 0000 0000 0000 .....T..xV......
0x0040: 05c7
There is neither 7b39 or 7bf9.
Can't use tshark on openwrt.
Btw, why can't I add lowpan0 on top of monitor0?
root@OpenWrt:/# ip link add link monitor0 name lowpan0 type lowpan
RTNETLINK answers: Invalid argument
> When this happens randomly I had sometimes some corrupted data when the
> spi clock is too high, but I think you use the bitbang gpio spi driver
> now, or? Then I think the spi clock isn't the issue.
>
> - Alex
--
Baptiste
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