|
| From: | Gabriel T |
| Subject: | Re: [Discuss-gnuradio] Why does Airprobe no longer work with current GNU Radio? |
| Date: | Wed, 19 Feb 2014 12:32:30 -0300 |
| User-agent: | Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 |
Hi,
Following this website:
http://www.rtl-sdr.com/rtl-sdr-tutorial-analyzing-gsm-with-airprobe-and-wireshark/
I've applied the patch mentioned and could run airprobe with gnuradio
3.7. However, I couldn't decode the example file nor live signals using
RTL-SDR. When I run:
./go.sh capture_941.8M_112.cfile 64 0b
I get:
Using Volk machine: ssse3_32_orc
Key: '0000000000000000'
Configuration: '0B'
Configuration TS: 0
configure_receiver
gr::buffer::allocate_buffer: warning: tried to allocate
115 items of size 568. Due to alignment requirements
512 were allocated. If this isn't OK, consider padding
your structure to a power-of-two bytes.
On this platform, our allocation granularity is 4096 bytes.
And after a few seconds the prompt returns. In the mean, nothing
appeears in wireshark sniffing in lo, as it should. I've also tried
using gsmdecode instead of wireshark and this is what I got:
gr::buffer::allocate_buffer: warning: tried to allocate
115 items of size 568. Due to alignment requirements
0: ac WARN: packet to short
512 were allocated. If this isn't OK, consider padding
your structure to a power-of-two bytes.
HEX l2_data_out_Bbis:462 Format Bbis DATA
On this platform, our allocation granularity is 4096 bytes.
000: ac ee 33 2c 00 00 00 00 - 00 00 00 00 00 00 00 00
001: 00 00 00 00 00 00 00
0: ac 101011-- Pseudo Length: 43
1: ee 1------- Direction: To originating site
1: ee -110---- 6 TransactionID
1: ee ----1110 Extension of the PD to one octet length [FIXME]
1: ee XXXXXXXX UNKNOWN DATA (3 bytes)
1: ee YYYYYYYY REST OCTETS (22)
0: e0 WARN: packet to short
HEX l2_data_out_Bbis:462 Format Bbis DATA
000: e0 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
001: 00 00 00 00 00 00 00
0: e0 111000-- Pseudo Length: 56
1: 00 0------- Direction: From originating site
1: 00 -000---- 0 TransactionID
1: 00 ----0000 Group Call Control [FIXME]
1: 00 XXXXXXXX UNKNOWN DATA (7 bytes)
1: 00 YYYYYYYY REST OCTETS (22)
0: cf WARN: packet to short
HEX l2_data_out_Bbis:462 Format Bbis DATA
000: cf a0 b0 00 00 00 00 00 - 00 00 00 00 00 00 00 00
001: 00 00 00 00 00 00 00
0: cf 110011-- Pseudo Length: 51
1: a0 1------- Direction: To originating site
1: a0 -010---- 2 TransactionID
1: a0 ----0000 Group Call Control [FIXME]
1: a0 XXXXXXXX UNKNOWN DATA (1 bytes)
1: a0 YYYYYYYY REST OCTETS (22)
0: cf WARN: packet to short
HEX l2_data_out_Bbis:462 Format Bbis DATA
000: cf a0 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00
001: 00 00 00 00 00 00 00
0: cf 110011-- Pseudo Length: 51
1: a0 1------- Direction: To originating site
1: a0 -010---- 2 TransactionID
1: a0 ----0000 Group Call Control [FIXME]
1: a0 XXXXXXXX UNKNOWN DATA (1 bytes)
1: a0 YYYYYYYY REST OCTETS (22)
0: cf WARN: packet to short
HEX l2_data_out_Bbis:462 Format Bbis DATA
000: cf ee ce e0 00 00 00 00 - 00 00 00 00 00 00 00 00
001: 00 00 00 00 00 00 00
0: cf 110011-- Pseudo Length: 51
1: ee 1------- Direction: To originating site
1: ee -110---- 6 TransactionID
1: ee ----1110 Extension of the PD to one octet length [FIXME]
1: ee XXXXXXXX UNKNOWN DATA (2 bytes)
1: ee YYYYYYYY REST OCTETS (22)
I don't know if this list is appropriate for this, but I'm not sure
which is the airprobe mailing list. I'd appreciate any hints. Thanks!
Gabriel
El 10/02/14 08:19, Marcus Müller escribió:
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Um, no, sorry, but I think it used to work with the same GR installations as OpenBTS in general, which IIRC was the now ancient 3.4.2. Sadly, the ccc's SVN browser doesn't talk to me, so I can't have a look right now. As to the useful GR features it can't use if it is that old, I can think of quite a few... There's a reason GR development didn't stop a couple of years ago :) - - Stream tags, - - message passing, both very useful if you're dealing with bursts of transmissions, and if you asynchronously want to pass information between blocks (e.g. channel estimates etc), compare the gr-digital OFDM code - - python blocks, totally useful if you want to speed up development of "logical" functions such as understanding of channel management information, compare gr-lte, - - a lot of standard blocks that ease tasks like frequency translation, control loops etc., - - a stable and versatile build framework (CMake-based) with powerful tools to do standard tasks like adding and removing blocks, generating GRC files (ohhhh GRC is a nice new feature, too, I guess) and even some source control integration (gr_modtool) Greetings, Marcus On 10.02.2014 10:26, M Dammer wrote:I tried building airprobe with the latest 3.6 build (3.6.5.1) and even that failed. Can someone probably point us to a gnuradio version that definitely works with airprobe ? regards, Mark On 10/02/14 02:54, JIANG Pin A wrote:Hi, I met the same problem with airprobe and GNU Radio 3.7. I think it's due to GNU Radio 3.7 is restructured, which leads the airprobe no longer work with GNU radio. You may try GNU Radio 3.6 series. For changes and new features in 3.7, you can check the release note. Best Regards, Jiang Pin From: address@hidden [mailto:address@hidden On Behalf Of zhenhua han Sent: 2014?2?10? 10:12 To: address@hidden Subject: [Discuss-gnuradio] Why does Airprobe no longer work with current GNU Radio? Hi all, I'm new here to use GNU Radio. And I'm trying to decode GSM signal with airprobe. In GSoC page of GNU Radio, I found these words: "It no longer works with current GNU Radio versions, and doesn't make use of any of the new GNU Radio features." What are the detailed reasons? Moreover, what are the new features? Best wishes, Zhenhua HAN _______________________________________________ Discuss-gnuradio mailing list address@hidden https://lists.gnu.org/mailman/listinfo/discuss-gnuradio_______________________________________________ Discuss-gnuradio mailing list address@hidden https://lists.gnu.org/mailman/listinfo/discuss-gnuradio-----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJS+LW4AAoJEAFxB7BbsDrLvDMH/RWPitF68jC+DNSyHiidIqIi 4/T0UZ3CWMSkVAKoXPSMIdRb6rA+ih1fJvuvrTkLlrYpCONTCEOR8wQdb3uRFNu4 soAVnblOKo9OzqZ0Uckw3FzZq1Kdqje40+gYQHxDBFUPWYavG2uTYROkiBq5qlRW PlKE6nwYF0Ia3YHTF4JGvWlLlOzMo20zX92Y6OtXZruVqvAzAOfLo9wkvdEojdre Z2Cwu4tWohu54gJF6gQ+zfkJy71EBZJ8rpLGm6jyVtu9vvLgiCPMcrhCnV0Ncf41 Avp5jT4fw+CHsxMt2es83+3EvG/q2yfjrI0yToLsjF1g+Zhwyfu5goxc8wlb7sM= =kwQZ -----END PGP SIGNATURE----- _______________________________________________ Discuss-gnuradio mailing list address@hidden https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
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