Re: [Discuss-gnuradio] reg calculation of BER/SNR using gnuradio UHD
On 09/27/2011 06:12 PM, shantharam balasubramanian wrote: Hi When I run it in USRP1 nodes, I don't get the error as before, that says it cannot find USRP1. USRP1s didn't require any "wire format" or firmware/FPGA changes to support UHD, so both "classic" and "UHD" programs will work, with USRP1s provided that the daughtercard in use is "pre-UHD". Development of the "classic" branch was frozen quite some time ago, so any cards that are "new" won't work in anything but the UHD environment. But the benchmark_tx program says "Failed to tune to center frequency". I then tried to send it in 2 MHZ and also in 2 GHZ frequency, but it still doesn't work. What daughtercard are you using? What rev of Gnu Radio are you using? I strongly suggest always trying to run with some quite current. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] reg calculation of BER/SNR using gnuradio UHD
Hi When I run it in USRP1 nodes, I don't get the error as before, that says it cannot find USRP1. But the benchmark_tx program says "Failed to tune to center frequency". I then tried to send it in 2 MHZ and also in 2 GHZ frequency, but it still doesn't work. Can anyone tell me why it's happening.? It will be greatly helpful if someone can help me out with this center frequency setting process. Thanks Shantharam ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] reg calculation of BER/SNR using gnuradio UHD
Hi Thanks for the reply. And yes you are correct. It just works for USRP1 alone, though it seeks to give the option of selecting the USRP number. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] reg calculation of BER/SNR using gnuradio UHD
On 09/27/2011 05:00 PM, shantharam balasubramanian wrote: Hi Ben, Thanks a lot for the reply. One of our colleagues downloaded the gnuradio version 3.1.2 and we are using that version. I don't know if we need to download the latest version of gnuradio (3.4.0) and run that. Now, the thing is, the benchmark_tx and benchmark_rx programs in gnuradio-examples/python/digital sub-folder work properly. That means, the receiver receives the packets transmitted by the transmitter. However, when we try running the benchmark_rx and benchmark_tx programs of gnuradio-examples/python/digital-bert subfolder, it fails to find usrp. We give the following command to run the benchmark_rx program of bert subfolder: ./benchmark_rx.py -f 2.412G -r 1M We have also tried with: ./benchmark_rx.py -f 2.412G -r 1M -w 2 (We are using USRP2) The program shows the following error message: usrp: failed to find usrp[0] (If we give -w 2, it says failed to find usrp[2]) Runtime error: can't open usrp We don't know if we are giving wrong commands because similar commands work well for benchmark programs in the python/digital sub-folder. Your help will be very appreciated. Thanks, -- Regards The examples you are using are designed strictly for a USRP1, using the "classic" interface. You have presumably modified your USRP2 for "UHD", which does not interoperate with programs using the "classic" API. I believe Tom Rondeau is busy working on updating most of the important examples to use UHD, which will allow, among other things, the ability to use *any* of the USRP hardware, more-or-less seamlessly with most of the examples. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] reg calculation of BER/SNR using gnuradio UHD
Hi Ben, Thanks a lot for the reply. One of our colleagues downloaded the gnuradio version 3.1.2 and we are using that version. I don't know if we need to download the latest version of gnuradio (3.4.0) and run that. Now, the thing is, the benchmark_tx and benchmark_rx programs in gnuradio-examples/python/digital sub-folder work properly. That means, the receiver receives the packets transmitted by the transmitter. However, when we try running the benchmark_rx and benchmark_tx programs of gnuradio-examples/python/digital-bert subfolder, it fails to find usrp. We give the following command to run the benchmark_rx program of bert subfolder: ./benchmark_rx.py -f 2.412G -r 1M We have also tried with: ./benchmark_rx.py -f 2.412G -r 1M -w 2 (We are using USRP2) The program shows the following error message: usrp: failed to find usrp[0] (If we give -w 2, it says failed to find usrp[2]) Runtime error: can't open usrp We don't know if we are giving wrong commands because similar commands work well for benchmark programs in the python/digital sub-folder. Your help will be very appreciated. Thanks, -- Regards Shantharam Balasubramanian MS in Electrical and Computer Engineering Rutgers University Ph:732-543-6863 Email:shantharam...@gmail.com ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] reg calculation of BER/SNR using gnuradio UHD
Hi I am working in WINLAB and I have been using gnuradio UHD image for running some of the programs I have previously worked in summer. I came across a post in this forum, where few months ago someone has asked how to calculate BER and Tom has given him the answer to look into digital-bert folder. http://gnuradio.org/redmine/projects/gnuradio/repository/revisions/master/show/gnuradio-examples/python/digital-bert When I tried to run the program it said it cannot find USRP and I guess this is due to the problem of firmware image I am using. Does anyone have any idea of what image I should use for these programs? It will be much helpful if someone can help me out with this. Thank you -- Regards Shantharam Balasubramanian MS in Electrical and Computer Engineering Rutgers University Ph:732-543-6863 Email:shantharam...@gmail.com ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio