baseband-devel February 2016

baseband-devel@lists.osmocom.org

15 participants
26 discussions

Re: Moving from trac to a single redmine
by Вадим Яницкий 22 Feb '16

22 Feb '16

Hi! > Then I believe the following SPF record should be provided for > lists.osmocom.org: > "v=spf1 a mx a:gandharva.secretlabs.de -all" What for "a:gandharva.secretlabs.de" is in this string? С наилучшими пожеланиями, Яницкий Вадим.

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Progress of trac->redmine migration
by Holger Freyther 20 Feb '16

20 Feb '16

Hi all, I think we are close to the point of no return. All tickets and wikis have been imported. Please have a quick look if there is something obviously broken and if not I will proceed with post-processing and renaming tonight. kind regards holger

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Re: http://bb.osmocom.org/trac/wiki/SIMReader page
by Вадим Яницкий 20 Feb '16

20 Feb '16

Hi! But when tried to follow this guide: > > http://bb.osmocom.org/trac/wiki/SIMReader > This guide is outdated. Currently the master branch can perform R/W operations with SIM without any problems. Just use it. С наилучшими пожеланиями, Яницкий Вадим.

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Re: http://bb.osmocom.org/trac/wiki/SIMReader page
by robert.luben＠openmailbox.org 19 Feb '16

19 Feb '16

Hello, In this tutorial: http://bb.osmocom.org/trac/wiki/SIMReader Some parts for me were confusing like this one: "git clone git://git.osmocom.org/osmocom-bb.git cd osmocom-bb git checkout -b testing remotes/origin/sylvain/testing" and this one: diff --git a/src/target/firmware/Makefile b/src/target/firmware/Makefile (diff --git Does not work on Ubuntu 15.04) I tried this instead of aforementioned: mkdir osmocombb git clone git://git.osmocom.org/osmocom-bb.git master cd master/src make cd ~/osmocombb git clone git://git.osmocom.org/osmocom-bb.git -b sylvain/testing testing Then I uncommented line with #CFLAGS += -DCONFIG_TX_ENABLE inside osmocombb/master/src/target/firmware/Makefile cd master make And then followed rest of wiki guide. Any comment? Thanks. Robert.

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http://bb.osmocom.org/trac/wiki/SIMReader page
by robert.luben＠openmailbox.org 19 Feb '16

19 Feb '16

Hello, I've installed osmocombb software on Ubuntu 15.04 according to this guide on wiki: http://bb.osmocom.org/trac/wiki/Software/GettingStarted No problem so far at this point, everything compiles, layer1 runs on Motorola C123 via cable etc. But when tried to follow this guide: http://bb.osmocom.org/trac/wiki/SIMReader I'm getting errors after running make inside src directory, and beside that I think that wiki guide is bit unclear here: diff --git a/src/target/firmware/Makefile b/src/target/firmware/Makefile On my Ubuntu 15.04 diff --get alone gives error 'diff: unrecognised option '--git'. I tried also via Vi to uncomment -# on -#CFLAGS += -DCONFIG_TX_ENABLE line inside /src/target/firmware/Makefile and compile but to no avail... Any help with this? Thanks in advance :) Robert.

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Disable the vocoder in the DSP
by Andrey 17 Feb '16

17 Feb '16

Hello guys, I am looking for a way to disable the vocoder for voice calls, i.e., supply my own 260 bits every 20 ms to be sent in the uplink TCH instead of the output from the vocoder in the Calypso DSP, and on the downlink, receive the bits which would otherwise go into the vocoder. My question is: is it possible to do what I seek using the know-how of Calypso DSP black magic that has already been amassed by the OsmocomBB project? I am thinking of the following 3 possible starting points: 1. LCR integration: the mobile app can be configured to route voice call audio to the Linux host instead of the phone's earpiece and mic, right? At which point does it intercept the standard voice path? Does it intercept right where I want it, passing raw over-the-air TCH bits to the external host, such that Asterisk or whatever has to run the GSM codec, or is the intercept happening at the point of linear PCM samples, such that the uplink TCH bits are still generated by the DSP black box? 2. The burst_ind branch lets the Linux host see every burst that is received on the downlink, right? It would therefore include TCH bursts during voice calls, right? This way I should be able to capture all of the raw TCH bits on the downlink - but what about the uplink? 3. I've also read about the Calypso-as-BTS hack - way cool! In order to work, this hack must support both receiving and transmitting arbitrary bursts, right? If neither option 1 nor option 2 would work, do you guys think the Calypso-as-BTS implementation code would serve as a starting point for what I seek? I do need to run the OsmocomBB phone in the standard MS role, not in the BTS role, and I need to place voice calls on the network in the standard manner - but with TCH rerouted to my own source and sink for raw over-the-air bits. TIA for any guidance!

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baseband-devel February 2016