13 Sep
2011
13 Sep
'11
5 a.m.
Hi all,
I am really thrill to set up OsmocomBB program single handedly after
scourging through mailing list and crash learning linux environment from
online tutorials. This is an amazing project with a lot of concept and idea
that can only be acquired through years of working as a developer. I really
appreciate the great work each and everyone put into this project and I am
taking advantage of this to set myself back as a programmer.
Could there be a comprehensive documentation on how to setup the the project
from the first stage of firmware download to the linking of various
applications to the running osmocon program. It took a lot of time to get
myself around the project before I could finally set it up. Beside the core
participant programmers and those that were previously familiar with this
nature of application many of the interested enthusiast like me are left in
the dark on what to do at one point or the other during the set up of the
project.
For an instance after successfully setting up the osmocomBB, I couldn't run
the program with my C155 just for the fact that I mistakenly took the
passing parameter for C155 for "C155xor" following the given example based
on C123. It took me over two days to realized where the error was all
because I was having legitimate error report of "NACK" that was explained on
the blog to be due to different transmission rate between the hosting system
and the MS onboard chip. By stroke of luck, I removed the "xor" based on
solution suggested for similar issue on different Motorola model and VIOLA
!!! firmware completes downloading and I'm set on track . The funniest
thing is that it was after I've resolved the problem that I later read the
reference to the C155 parameter passing.
Secondly, setting up config file for MOBILE APP was like searching for
needle in the hail. My thought was that the file needed to contain a written
configuration of VTY with telnet parameters. That took me on a journey of
learning what telnet is, what Virtual Terminal is. Anyway, I learn a lot
from googling here and there before I finally read in some solution that the
file is just an empty file. I know that it might be trivial issue to many of
the grounded programmers but to some like me it was really a big issue.
Right now I am running the Mobile App and about to setup the patch
wireshark but still have no clue of what command to send through the telnet
interface or what next to do on the Mobile prompt section. It will be a nice
to have a compiled possible errors that newbies might encounter and as well
a basic step on what to do at each stage of setting up and running of the
programs.
Just to give a little background about myself; I have a two semester of
wireless technology as part of my graduate study and I intend to use
OsmocomBB as the basis of my thesis on analyzing GSM Um interface.
Great work guys and God bless.
Rasak
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14 Sep
14 Sep
2:21 a.m.
Like I mentioned earlier in my post that it took serious searching through
the mailing list to know what to do. I have done all what I think I am
expected to do but I'm yet to get cell information after using the SHOW CELL
1 command on the VTY.
Firstly, everything runs perfectly with respect to the Mobile App. I am
running the Mobile App with no SIM for now. I understand that Sylvian path
support SIM but I just want to see it run without SIM for now.
I will be so much grateful if anyone can just let me know what parameter to
set on VTY. Already I have written to the .cfg file and as well use 'conf t'
with 'ms 1' and 'no shutdown' parameters. For now, no traffic is
displayed
by Wireshark despite of no error message in running of the Mobile.
I have looked thoroughly and couldn't find any info about displaying CELL
INFO with no SIM. I hope I get a response soon from anyone for me to finally
say EUREKA!!!
Best regards,
Rasak
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2:25 a.m.
On 09/13/2011 05:00 AM, rola wrote:
Hi all,
I can assist you with answering some docbook questions to help you to create a
usermanual and merge your doc into the osmocom-bb tree. Even if your question
has not been answered you might already have knowledge worth sharing.
cheers
holger
4:31 a.m.
Hi Holger,
I will love to do that as my token contribution in a way but for now, I have
to get the Mobile App running. I have everything pretty much set up to the
level of being able to telnet to the Mobile. However, Wireshark is not
receiving any frame and Cell Info display empty content. I'm using No SIM
and running from the Master with Osmocon running on loader.compalram.bin. I
set the Mobile App to loop back 127.0.0.1 and set the Wireshark port to what
is on the wiki. Is there any other program I need to run beside Mobile
before I can receive cell broadcast info even though the init process shows
no error.
I really would have love to start looking into the code but that gonna be
like looking for pond in the middle of desert. If I can get this work out
with idea of how each and every programs involve interact, then I can start
playing around with source code and perhaps may be implements some GSM
features in the future.
By the way, how will the merging of existing code on OpenBTS integrate with
the OSmocomBB such that USRP is bypassed. I believe this can work if
appropriate framing is sent from the layer23 to layer1. I hope this will not
require writing special firmware to implement the Signal Channel from the
BST. By this, OsmocomBB could be the simplest GSM implementation ever with
total cost nothing less than $100.00
There may be concern about hopping frequency bu I think that has been taken
care of in one of the demonstration by using four different MS. But I would
know how the transmitting and receiving signal will handle at the layer.
Layer23 can then pass the received digitized voice using VoIP s it is in
OpenBTS. From the look of thing, OpenBSc might have the necessary code by
now but it will worth it can be independent of any specific device. That is
just what I feel initially about this work but I realized that it is a big
hell of a work for a newbie like me.
Please, if you can help out with my earlier request on retrieving the CELL
INFO when SHOW CELL command is used while Mobile App is running with no SIM
and Osmocon is strictly runs on Master, that will make my day.
Cheers.
Rasak
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2 p.m.
On 09/14/2011 04:31 AM, rola wrote:
Hi Holger,
I will love to do that as my token contribution in a way but for now, I have
to get the Mobile App running.
Well, if you start with the documentation and bring it to a a point where you
have questions regarding the mobile app we can deal with it as part of the
documentation.
your choice
holger
4:55 p.m.
Holger,
You don't have to task me before you let me in the CLUB. I wish I can do
much more than you expect me but my hands are tight at the moment. I
understand how difficult for many to spare their time to contribute to this
project and I really feel the impact after gruesome time of resolving issues
single handedly. We all don't have to pass through the hard path to get
thing going because it is like reinventing the wheel. That is why I
requested for more user friendly directive for newbies like me. In the first
instance the existing wiki is old and misleading in some cases. You are well
aware that nothing like layer23 app anymore yet it is still reference in the
wiki. This sort of information creates a lot of confusion for in experience
people like me.
Anyway, I hope in a short while I will be posting my CELL INFO display cause
my MS is scanning at the moment.
Cheers.
Rasak
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5:02 p.m.
On 09/14/2011 04:55 PM, rola wrote:
Holger,
That is why I
requested for more user friendly directive for newbies like me. In the first
instance the existing wiki is old and misleading in some cases. You are well
aware that nothing like layer23 app anymore yet it is still reference in the
wiki. This sort of information creates a lot of confusion for in experience
people like me.
Well then either feel free to ask for a password for the wiki (it is our
manual spam filter) and change the config or point to the pages with outdated
information.
And it is not a 'CLUB' either you feel like sharing your work or you don't.
holger
7:48 p.m.
Hi Holger,
You should know that for some it is not all that easy to trouble shoot
somebody else code when one has little idea of how thing is structure. I
have little or know idea of so many concepts used in developing this
application and that make it tough for me to hack into the program. I only
have basic understand of GSM network and a bit beginner's programming
experience. However I've tried all what I could to run it the way I
understand it. May be I was wrong in asking for more elaborate step by step
procedure that will create unnecessary mistake that might be committed by
people like me.
One thing you don't get to realized is that people like me normally base
their parameter on the first given working command and overlook a subtle
change in parameter when the same code is being used. For an instance I have
been using my initial loader.compal.bin for osmocon not knowing that it is
suppose to be layer1.*.bin. when running with Mobile. Believe me, I read the
wiki but my eyes never caught the difference until I ran into issues and
locate the difference in someone else posted debug. Time waisted in looking
all around the mailing list would have been used to work on something else.
Anyway, I'm still stuck at one point on what I am doing; both osmocon and
Mobile seems lock in an endless cycle of scanning the channel. Nothing can
be display for the CELL INFO. I hope you can just help out at this stage.
If I can get an access to the wiki and point out the section needed to be
modified with respect to the existing online documentation, it will be with
all pleasure to make a token of my assistance. Therefore, I hereby request
for the password to the wiki page.
Have a nice wonderful day.
Best regards
Rasak
And it is not a 'CLUB' either you feel like
sharing your work or you
don't.
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15 Sep
15 Sep
12:19 a.m.
Hi Rola,
probably you should post the output you are getting from mobile and explain
what you are doing, then it will be clearer what you miss to get things
work.
Cheers,
Loretta
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16 Sep
16 Sep
3:08 a.m.
Hi All,
Currently I have the Osmocon running layer1.compalram.bin using Motorola
C155.
Mobile runs as ./mobile -i 127.0.0.1. I followed the normal procedure as
followed:
i. Start the osmocon program
ii. Start Mobile App
iii. Turn C155 on
iv. Start Wireshark (Direct Path Source : Git ) with the following
parameters:
Osmocon and Mobile keeps cycling in a loop searching for possible PLMN and
perhaps trying to find a suitable
cell to camp on. After power measure with an average level of -95dB, FCCH
RecognitionL1CTL_RESET_REQ kicks in.
The layer1 process keeps in this loop continuously. Likewise the Mobile app
with gsm322 message of channel
sync error. My guess is Layer1 couldn't found a suitable frequency to sync
with. And I wonder why?
I'll like to know if anyone has successfully run Mobile without SIM using
the Master copy.
Please, I'll appreciate any hint on what to do from anyone
Thanks.
Osmocon Output:
.
.
.
Starting FCCH RecognitionL1CTL_RESET_REQ: FULL!L1CTL_FSB_REQ (arfcn=102,
flags=0x7)
Starting FCCH RecognitionL1CTL_RESET_REQ: FULL!L1CTL_PM_REQ start=0 end=124
PM MEAS: ARFCN=0, 42 dBm at baseband, -95 dBm at RF
.
.
.
.
.
L1CTL_PM_REQ starts=512 end=885
.
.
.
.
<0003> gsm322.c:2268 1 frequencies left in band 955..124
<0003> gsm322.c:2993 Channel sync error.
<0003> gsm322.c:2998 free sysinfo ARFCN=1001
<0003> gsm322.c:2734 Cell selection failed, sync timeout.
<0003> gsm322.c:521 ARFCN |MCC |MNC |LAC |cell ID|forb.LA|prio
|min-db |max-pwr|rx-lev
<0003> gsm322.c:521
-------+-------+-------+-------+-------+-------+-------+-------+-------+-------
<0003> gsm322.c:521
<0003> gsm322.c:2124 Cell search finished without result.
<0003> gsm322.c:823 new state 'C6 any cell selection' -> 'C0
null'
<0002> gsm322.c:3804 (ms 1) Event 'EVENT_NO_CELL_FOUND' for automatic PLMN
selection in state 'A6 no SIM inserted'
<0003> gsm322.c:4035 (ms 1) Event 'EVENT_NO_CELL_FOUND' for Cell selection
in state 'C0 null'
<0003> gsm322.c:823 new state 'C0 null' -> 'C6 any cell
selection'
<0003> gsm322.c:2790 Scanning power for all frequencies.
<0003> gsm322.c:2851 Scanning frequencies. (0..0)
<0005> gsm48_mm.c:4196 (ms 1) Received 'MM_EVENT_NO_CELL_FOUND' event in
state MM IDLE, no cell available
<0005> gsm48_mm.c:4209 Message unhandled at this state.
<0003> gsm322.c:2900 Found signal (ARFCN 0 rxlev -98 (12))
<0003> gsm322.c:2888 Getting PM for ARFCN 0 twice. Overwriting the first!
Please fix prim_pm.c
<0003> gsm322.c:2900 Found signal (ARFCN 0 rxlev -98 (12))
<0003> gsm322.c:2900 Found signal (ARFCN 1 rxlev -95 (15))
<0003> gsm322.c:2900 Found signal (ARFCN 2 rxlev -95 (15))
<0003> gsm322.c:2900 Found signal (ARFCN 3 rxlev -95 (15))
<0003> gsm322.c:2900 Found signal (ARFCN 4 rxlev -98 (12))
<0003> gsm322.c:2900 Found signal (ARFCN 5 rxlev -98 (12))
<0003> gsm322.c:2900 Found signal (ARFCN 6 rxlev -98 (12))
<0003> gsm322.c:2900 Found signal (ARFCN 7 rxlev -97 (13))
<0003> gsm322.c:2900 Found signal (ARFCN 8 rxlev -95 (15))
<0003> gsm322.c:2900 Found signal (ARFCN 9 rxlev -95 (15))
<0003> gsm322.c:2900 Found signal (ARFCN 10 rxlev -95 (15))
<0003> gsm322.c:2900 Found signal (ARFCN 11 rxlev -98 (12))
Mobile Telnet
rola@ubuntu:~$ telnet localhost 4247
Trying ::1...
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Welcome to the OsmocomBB control interface
OsmocomBB> en
OsmocomBB# conf t
OsmocomBB(config)# ms 1
OsmocomBB(ms)#no shutdown
OsmocomBB(ms)#en
OsmocomBB# sh ms
MS '1' is up, service is unavailable
IMEI: 000000000000000
IMEISV: 0000000000000000
IMEI generation: fixed
automatic network selection state: A6 no SIM inserted
cell selection state: C6 any cell selection
radio ressource layer state: idle
mobility management layer state: MM idle, no cell available
OsmocomBB# write
Configuration saved to /home/rola/.osmocom/bb/mobile.cfg
OsmocomBB#
Rasak
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12:47 p.m.
Hi All,
i am also stuck at the same point as mentioned by Rasak.
i am also getting the same logs. if any one could tell how to fix it it
would be helpfull.
regards,
nageswara reddy.
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10 comments
4 participants
participants (4)
-
Holger Hans Peter Freyther -
karnatinagesh＠gmail.com -
rola -
screaming-pain