Yeah I succeeded! I installed libusrp from apt-get install tool (libusrp-dev).
The problem was that this library isn't configured for working with 52MHz clock of my USRP1. So I installed this library and then I replaced these files from /usr/lib by other files that I compiled myself from an older version of GNU Radio (3.2.2) on an other computer. It's an unofficial installation but it work with latest version of GNU Radio and UHD :-D Thank you a lot all! Vanessa 2012/5/2 Thomas Tsou <tt...@vt.edu> > On Wed, May 2, 2012 at 3:20 AM, Vanessa Quaranta > <vanessa251...@gmail.com> wrote: > > transceiver: usrp_standard.cc:1024: virtual bool > > usrp_standard_tx::set_tx_freq(int, double): Assertion `dac_rate () == > > 128000000' failed. > > 1335942873.3055 WARN 3078358736 TRXManager.cpp:254:sendCommandPacket: > TRX > > link timeout on attempt 1 > > 1335942873.3057 ALARM 3069520752 TRXManager.cpp:85:clockHandler: TRX > clock > > interface timed out, assuming TRX is dead. > > 1335942873.3057 ALARM 3069520752 TRXManager.cpp:85:clockHandler: TRX > clock > > interface timed out, assuming TRX is dead. > > Abandon > > > > So, I think the problem is the clock! > > How can I patch GNURadio 3.6.0 or libusrp for that? > > With GNURadio 3.2.2 we need to patch files from /usrp/host/lib/legacy/* > > files but with the newer version, I don't know how to patch these files.. > > The 'TRX clock' error is slightly misleading and refers to the GSM > frame / timeslot counter. It is mostly unrelated to 52 MHz clock that > drives the hardware. The most common reason for TRX clock errors is > that the transceiver fails to start - no device present, tuning fails, > missing permissions, etc. > > To be clear, GNURadio is not required for OpenBTS operation. But, > OpenBTS requires libusrp in order to use the USRP1, and libusrp is > contained only in older versions of GNURadio. Version 3.4.2 was the > last that contained libusrp. > > My suggestion for 52 MHz USRP1 operation with OpenBTS is the following > configuration: > > openbts p2.8 > gnuradio 3.4.2 (the last version with libusrp) > > No other USRP related packages are necessary and no code needs to be > patched. While there are still some users that prefer version 2.6 > derived versions because of the easier text file based configuration, > I suggest version 2.8 because of better maintenance and support you > will likely receive. > > Also, with libusrp no longer being supported by GNURadio, the OpenBTS > mailing list may be a better place to ask questions. > > http://sourceforge.net/mail/?group_id=230904 > > Thomas >
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