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 (If we give -w 2, it says failed to find usrp)
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.