Hi, I went to pick up my UmTRX this morning. \o/ It appears to start fine, but I'm hitting a couple issues trying to connect OpenBTS to it: transceiver won't start ======================= I get the following errors when starting OpenBTS or the transceiver: /home/stephane/Public/src/umtrx/openbts-p2.8/apps# ./transceiver linux; GNU C++ version 4.7.2; Boost_104900; UHD_003.004.000-a52936a ALERT 139976877029152 UHDDevice.cpp:434:open: No UHD devices found with address '' ALERT 139976877029152 runTransceiver.cpp:94:main: Transceiver exiting... /home/stephane/Public/src/umtrx/openbts-p2.8/apps# ./transceiver linux; GNU C++ version 4.7.2; Boost_104900; UHD_003.004.000-a52936a ALERT 139853627492128 UHDDevice.cpp:345:set_rates: Failed to set master clock rate ALERT 139853627492128 UHDDevice.cpp:346:set_rates: Actual clock rate 1.3e+07 ALERT 139853627492128 runTransceiver.cpp:94:main: Transceiver exiting... (This is with latest UHD from git://github.com/chemeris/UHD-Fairwaves.git and latest openBTS from git://github.com/ttsou/openbts-p2.8.git ) I assume the first one ('No UHD devices...') is a transcient problem. For the second issue I don't know whether this might be because the firmware on the unit I received might not be the latest, or because I really need to first upload the FPGA image (although I assumed ZPU wouldn't start in that case); here's the console output in any case: USRP N210 UDP bootloader FPGA compatibility number: 8 Firmware compatibility number: 11 Production image = 0 Checking for valid production FPGA image... No valid production FPGA image found. Valid production firmware found. Loading... Finished loading. Starting image. TxRx-UHD-ZPU FPGA compatibility number: 8 Firmware compatibility number: 11 LMS1 chip version = 0x22 LMS2 chip version = 0x22 00:1F:11:02:19:01 192.168.10.2 FPGA compilation error ====================== Assuming this is because of a missing/out-of-date FPGA image, I tried to compile the latest (git) FPGA firmware: cd UHD-Fairwaves/fpga/usrp2/top/N2x0/ ; make clean ; make UmTRXv2 but got the following error: ERROR:HDLCompiler:1654 - "/home/stephane/Public/src/umtrx/UHD-Fairwaves/fpga/usrp2/top/N2x0/u2plus_core.v" Line 734: Instantiating <rx_frontend_sw> from unknown module <frontend_sw> A quick `git blame` points to some changes in January but I wouldn't know where to start fixing this (or maybe this is an issue with my environemnt and not the code). In case this is the environemnt, I'm using ISE 14.4 on Linux/amd64. S.

We'll look into the FPGA compilation issue - may be Andrew forgot to check in that file. Thank you for reporting this.

I'll go ahead and recompile openBTS using your version. Thank you!

That worked out rather smoothly. I can see the '00101' GSM network on my phone and OpenBTS attempts to SIP REGISTER when I choose it on the phone. Here are my notes, I'll be posting further updates there as well: http://blog.shimaore.net/2013/02/umtrx.html Hope this helps.

Next steps for me are to setup FreeSwitch (and maybe OpenSIPS) so that I can start testing calls.

Question: I used RX1 and TX1 on the board to connect the antennae, but `transceiver` says "using transmit antenna RX1" and "using receive antenna TX2", does that mean I should use RX1/TX2 instead, or is this a configuration parameter I should modify in OpenBTS.db?

PS: Congratulations to everyone involved in making this so painless! Eight hours (lunch included) from unpacking to being able to see the MNC show up on a phone is _very_ nice.