From: hanwen <kid...@gm...> - 2010-11-30 21:44:40
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Hi, *, The OpenBTS works with my USRP2+1 WBX works pretty fine. Actually, this is the first time in my life that I successfully made a call with OpenBTS. As I don't have RFX900/1800 boards, I tried to make it work with USRP1+WBX before but failed. THANKS to Thomas and other guys contribute to this UHD-supported OpenBTS! I still got the ALARMS when starting OpenBTS: 1291152553.1603 ALARM 3073911008 TRXManager.cpp:447:setMaxDelay: SETMAXDLY failed with status -1 1291152553.1605 ALARM 3073911008 TRXManager.cpp:458:setRxGain: SETRXGAIN failed with status -1 And when I tried to use rxgain command to set RX gain, I still get this: 1291153403.5711 ALARM 3074988256 TRXManager.cpp:458:setRxGain: SETRXGAIN failed with status -1 new RX gain is 0 dB Any clue for this problem? Cheers, Hanwen 2010/11/17 Thomas Tsou <tt...@vt...> > I'm announcing the availability of USRP2 support with OpenBTS. The > patch set consists of a new device implementation that uses the UHD > driver from Ettus Research and allows the use of an external 10MHz > reference clock. Additional implementation details can be found in the > comments and commit log. > > Download: > > git clone git://github.com/ttsou/openbts-uhd.git > > git clone http://github.com/ttsou/openbts-uhd.git > > http://github.com/ttsou/openbts-uhd/tarball/master > > GitHub: > > http://github.com/ttsou/openbts-uhd > > Build: > > USRP2 support requires the UHD driver and firmware. GNU Radio is not > required. > > http://ettus-apps.sourcerepo.com/redmine/ettus/projects/uhd/wiki > > ./bootstrap > ./configure --with-uhd > make > > Without the '--with-uhd' option, the standard USRP1 implementation > will be built. > > Release Notes: > > *The USRP2 is clocked at 100MHz and does not output fractional sample > rates, so only the non-52M Transceiver is available. > > *Tested with a single WBX board, which is capable of operation on all > 4 GSM bands. Other boards should work, but are untested. > > *Operation in the upper bands (1800, 1900MHz) requires an external > reference for reliable operation. This is true to a lesser extent in > the lower bands as well. > > External Reference Clock: > > The front panel 10MHz reference input of the USRP2 can be used to > improve stability of the internal oscillator (~20 ppm). To test > frequency offset, a modified version of Kalibrate - > http://thre.at/kalibrate - is available. Information and examples for > the UHD development branch can be found here. > > http://ttsou.github.com/kalibrate-uhd > > That's about it. Hopefully, a number of people will find this useful. > Let me know if you have any questions. Comments and feedback are > always welcome. > > Thomas > > > ------------------------------------------------------------------------------ > Beautiful is writing same markup. Internet Explorer 9 supports > standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. > Spend less time writing and rewriting code and more time creating great > experiences on the web. Be a part of the beta today > http://p.sf.net/sfu/msIE9-sfdev2dev > _______________________________________________ > Openbts-discuss mailing list > Ope...@li... > https://lists.sourceforge.net/lists/listinfo/openbts-discuss > |