baseband-devel February 2010

baseband-devel@lists.osmocom.org

24 participants
27 discussions

Re: batter charging interface / iota madc block
by Dieter Spaar 28 Feb '10

28 Feb '10

Hello Joachim, On Sun, 28 Feb 2010 03:55:12 +0100, "Joachim Steiger" <roh(a)hyte.de> wrote: > > ps: according the the schem the vibra should be controlled by the auxdac > of iota. i poked it and some enable bit few minutes, but couldnt get it > doing anything. Have you turned the Auxiliary DAC on ? It has its own power control bit and bit 5 (ADACS) in TOGBR1 hat to be set to turn the Auxiliary DAC on. I just did a quick test with a C123, and the following seems to work: twl3025_reg_write(TOGBR1, 1 << 5); // turn ADAC on twl3025_reg_write(AUXDAC, 1000); delay_ms(1500); twl3025_reg_write(AUXDAC, 0); twl3025_reg_write(TOGBR1, 1 << 4); // turn ADAC off Best regards, Dieter -- Dieter Spaar, Germany spaar(a)mirider.augusta.de

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batter charging interface / iota madc block
by Joachim Steiger 28 Feb '10

28 Feb '10

sorry for not writing anything earlier, but i'm currently moving so i'm a bit short of time. i have been working on the bci and madc block already, so if you are not already done, i'd like to do that. its a bit tricky since one needs to do quite a lot to charge the battery correctly, but in the end we could even charge nimh and i guess small lead batterys also if we want to (with different code). i have done the irq handlers, the charger plug in detection and the async madc stuff is already working. it just needs some cleanup before commit. about the bci stuff: i'm now done reading and understanding the iota datasheets and appnotes (the latter one having invaluable information not in the datasheets). 'just' need to get it written down in code and debug it. ;) summary: if you can live with charging your batteries for another week or 2, just try figuring out the ringer and or vibra for example ps: according the the schem the vibra should be controlled by the auxdac of iota. i poked it and some enable bit few minutes, but couldnt get it doing anything. so there is still a mystery or 2 left. kind regards -- roh

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Bootloader
by Ingo Albrecht 27 Feb '10

27 Feb '10

Hi everyone Without further introduction and in a similar manner to laforge's last mail I would like to note that I am working on a bootloader that will allow for larger binaries in RAM and flexible flashing. To avoid troublesome interaction between the Calypso bootrom (which we use for interrupt redirection) and CFI support, I have decided to go for an interrupt-less approach. So don't be surprised to see me committing a polling mode to fundamental drivers (keypad, uart) sometime soon. Luckily, the required changes are trivial. I'll push my branch sometime soon, just dropping a line to keep everyone informed. Feel free to drop a line in case you are interested in other flash-based tasks like hammering out linkage details and implementing some kind of filesystem. Greetings prom

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C155 display driver
by Harald Welte 27 Feb '10

27 Feb '10

Hi! Just to avoid any possible duplicate work: A member of this list already has a working C155 color display driver. So if you were thinking of working on this: Please rather do another TODO item. I'm supposed to be merging that driver during the next couple of days. Cheers, Harald p.s.: I'm back in Berlin now, will be working with zecke of getting layer2 (bi-directional) up and running. -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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Motorola C200
by Tiago Maluta 27 Feb '10

27 Feb '10

Hi, First I'd like to thank all people involved with the project. I don't know about GSM but as Harald said [1] I can contribute with microcontroller development. I have an old functional Motorola C200 phone. I'd like to know if it's possible use it? I've search for some information about C200 baseband processor without success, so I'm asking in the list. [1] http://lists.osmocom.org/pipermail/baseband-devel/2010-February/000000.html --tm

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Re: [airprobe-main] Cell phone tracking using ss7 hlr lookups
by Karsten Nohl 26 Feb '10

26 Feb '10

Hi Yanis, I'm CCing the OsmoconBB list who could perhaps help setup a MSC-GPS data collector. On Feb 22, 2010, at 8:09 PM, Yanis Pavlidis wrote: > Hi all, > > not exactly related to airprobe itself, but I am sure people on this > list could answer my question. > So, after reading Tobias Engels' presentation on 25c3 ( http://events.ccc.de/congress/2008/Fahrplan/attachments/1262_25c3-locating-… > ), I found out you can perform an HLR lookup and come up with the > current MSC number that "controls" the connection of the subscriber, > for any subscriber. Yes, every telco company and VoIP provider with SS7 access in the world always knows where you are. Scary. > My question is, is this MSC number, visible from the mobile phone > side? If yes, somebody could actually wardrive, to get the MSC > number-to-location mapping? > Can airprobe, or OpenBTS help? Creating the {MSC -> location} mapping database would be a very worthwhile exercise. The data collection would have to happen from phones. Either we create an application for one of the popular phone platforms (Symbian, Android, iPhone). Anybody on the list knows if these phones expose the MSC number to application software? Alternative, the Osmocon project could probably expose the MSC information easily. The project is still in early stages and it will take a few months until a collector software could be running. I wonder if any of the supported Motorola phones have GPS? > Forgive my ignorance on all-things-gsm, I am just beginning exploring! Thanks for bringing up the topic! > Thanks all, > Yanis Cheers, -Karsten

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Where to start?
by Huseyin Turan 24 Feb '10

24 Feb '10

Hi; It is really a good work. Congratulations... I hope to develop in this project. Although I do not have any experience about microcontroller development and gsm, I think I can do. I can develop with C or C++. Does anyone suggest me any document, site to start? Thanks...

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some links for Nokia N95
by Benjamin Hagemann 24 Feb '10

24 Feb '10

Hello together, I have collected some informations / links for Nokia N95 and similar topics. Maybe some of them are good enough for the wiki. http://www.nokiaport.de/n95info/?id=processor http://www.nokiaport.de/n95info/?id=pcb http://www.phonewreck.com/wiki/index.php?title=Nokia_N95#Bill_of_Materials RF Transceiver: STMicroelectronics #4380206 Quad-band GSM/GPRS/EDGE, Dual-band UMTS/HSPDA (Unmarked) http://www.phonewreck.com/wiki/images/thumb/8/85/Nokia_N95_pcb_back.jpg/800… http://www.phonewreck.com/wiki/images/thumb/4/4b/Nokia_N95_pcb_front.jpg/80… http://www2.electronicproducts.com/Nokia_N95-whatsinside_text-61.aspx "Under the Hood: Hot 3G phone owes debt to analog" http://www.eetimes.com/showArticle.jhtml?articleID=202800251 http://i.cmpnet.com/eet/news/07/10/DC1500_UTH_1_PG_36.gif Nokia disassembly (Nokia N Gage, N96, N95 8GB, N95, N85, N82, N81 8GB, N80, E90, E71, http://www.gsm-extreme.net/showthread.php?t=25493 OMAP2420 -> ARM11, TMS320C55x DSP, ... http://focus.ti.com/paramsearch/docs/parametricsearch.tsp?family=dsp&sectio… http://focus.ti.com/docs/prod/folders/print/tms320c55.html # Improving 32-Channel DTMF Decoders in PBX Systems Using the TMS320C5x DSP (HTM, 8 KB) 486 views 01 Jun 1996 Read Abstract http://focus.ti.com/general/docs/litabsmultiplefilelist.tsp?literatureNumbe… # Use of the TMS320C5x Internal Oscillator With External Crystals or Resonators (HTM, 8 KB) 404 views 01 Jul 1995 Read Abstract http://focus.ti.com/general/docs/litabsmultiplefilelist.tsp?literatureNumbe… http://focus.ti.com/dsp/docs/dspfindtoolswresults.tsp?sectionId=3&tabId=162… DSP/BIOS 5.x Real-Time Operating System DSPBIOS5 LANsEND LANsEnd uCLinux LEOs® (Linux Embedded Operating System) OSEck http://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/index.ht… http://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/dspbios/… http://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/dspbios/… http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.85.1703&rep=rep1&t… Trends in Hardware Architecture for Mobile Devices Dr. Margarita Esponda Institut für Informatik Freie Universität Berlin Takustr. 9 14195 Berlin November 2004 Page 11: 2.3 Modern DSP Architectures 2.3.1 The TMS320C55 series Page 13: 2.3.2 The TigerSHARK Architecture Page 14: 3 Moving from voice to data centric systems 3.1 Hybrid Processors http://pdf1.alldatasheet.com/datasheet-pdf/view/29043/TI/TMS320C50.html TCS Modem http://www.worldlogic.com.hk/tcs_versions.html http://en.wikipedia.org/wiki/Base_Band_5 Nokia BB5 General information ;) http://forum.gsmhosting.com/vbb/showthread.php?s=34c3b939b47546c9d6c523bb36… Nokia SIM Lock Server (SL-1, SL-2, SL-3) http://www.nokiaport.de/index.php?mid=&pid=dct http://www.nokiaport.de/forum/thread.php?threadid=4666&sid=cf6be43b2f93404b… "Added support for RAPIDO SL_2 based models (al phones who is unlocked by credits with DK, MT, UB)" http://www.gsm-forum.eu/latest-files-shared-nokia/28691-nokia-free-unlock-r… http://www.gsm2back.com/2009/04/hot-free-unlock-rapido-bb5-plus.html http://www.mygsmbd.com/bb5-nokia-base-band-5/914-bb5-contact-service-trun-o… http://www.gsmchevli.com/support/ http://www.gsmchevli.com/support/BANDLOCK/ http://www.gsmchevli.com/support/BB5PM/N95-1/ -- kind regards, Benny gpg 0xFC505AB0 jabber benny(a)benny.de sip benny(a)benny.de

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AW: Phone acting as a BTS
by Andreas.Eversberg 24 Feb '10

24 Feb '10

>> But I guess you can use two MSs, one for transmit and one for receive to >> overcome this limitation. Is there any problems with this approach other >> then good clock synchronization? > >You need a very good clock sync :) But that's something that could be >tried I guess. maybe.. you could sync the "receiver phone" to the "transmitter phone" by using one timeslot. (TS7) or you could sync the receiver phone to a nearby bts and use a control line on the serial link to sync the transmitter phone to the receiver phone. (you need to cross-connect the serial ports on the phones for signalling anyway.) andreas

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Re: Phone acting as a BTS
by Sylvain Munaut 24 Feb '10

24 Feb '10

> But I guess you can use two MSs, one for transmit and one for receive to > overcome this limitation. Is there any problems with this approach other > then good clock synchronization? You need a very good clock sync :) But that's something that could be tried I guess. > PS Looking at pictures of ip.access Nanostation we didn't find any duplexers. > How does it work then? Or have we just missed duplexers on the photos? Nope, no duplexers. There is a TX antenna and a RX antenna. I think they are patch antenna that don't radiate sideways so that they don't leak into one another. There is also a massive chunk of metal between them to isolate :) Sylvain

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baseband-devel February 2010