[Discuss-gnuradio] Communication problems between 2 USRP's
Hi all, I want to transmit the data between two USRP's and make them communicate with each other. But I guess the packets are not being received properly.. My USRP daughterboard model is XCVR2450. When I am running ./benchmark_tx.py -f 2.435G, it is starting to transmit the packets but a small error occured given below, linux; GNU C++ version 4.8.4; Boost_105500; UHD_003.009.git-144-g407e3086 Using Volk machine: avx_64_mmx -- Opening a USRP1 device... -- Using FPGA clock rate of 64.00MHz... No gain specified. Setting gain to 7.50 (from [-20.00, 35.00]) UHD Warning: The hardware does not support the requested TX sample rate: Target sample rate: 0.05 MSps Actual sample rate: 0.25 MSps Symbol Rate: 25000.00 Requested sps: 2.00 Given sample rate: 25.00 Actual sps for rate: 10.00 Requested sample rate: 5.00 Actual sample rate: 25.00 ..U...terminate called after throwing an instance of 'uhd::runtime_error' what(): RuntimeError: usb tx2 transfer status: 1 Aborted (core dumped). But towards the receiver side, I gave the command ./benchmark_rx.py -f 2.435GG,it has shown the result given below with n_right=0. linux; GNU C++ version 4.8.4; Boost_105500; UHD_003.009.git-144-g407e3086 Using Volk machine: avx_64_mmx -- Opening a USRP1 device... -- Using FPGA clock rate of 64.00MHz... No gain specified. Setting gain to 56.25 (from [0.00, 112.50]) UHD Warning: The hardware does not support the requested RX sample rate: Target sample rate: 0.05 MSps Actual sample rate: 0.25 MSps Symbol Rate: 25000.00 Requested sps: 2.00 Given sample rate: 25.00 Actual sps for rate: 10.00 Requested sample rate: 5.00 Actual sample rate: 25.00 ok = False pktno = 53034 n_rcvd =1 n_right =0 ok = False pktno = 24 n_rcvd =2 n_right =0 ok = False pktno = 35 n_rcvd =3 n_right =0 ok = False pktno = 44 n_rcvd =4 n_right =0 ok = False pktno = 46 n_rcvd =5 n_right =0 ok = False pktno = 46 n_rcvd =6 n_right =0 ok = False pktno = 3872 n_rcvd =7 n_right =0 ok = False pktno = 12304 n_rcvd =8 n_right =0 ok = False pktno = 49 n_rcvd =9 n_right =0 ok = False pktno = 50 n_rcvd = 10 n_right =0 ok = False pktno = 54 n_rcvd = 11 n_right =0 ok = False pktno = 200 n_rcvd = 12 n_right =0 ok = False pktno = 63 n_rcvd = 13 n_right =0 My USRP can access in the range of 2.4GHZ to 5GHZ. Please advice as to what I can do. Thanks Regards, John -- Posted via http://www.ruby-forum.com/. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Communication problems between 2 USRP's
Hi Tom, So can you please advice what I can do next for them to be right? Regards, John -- Posted via http://www.ruby-forum.com/. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Communication problems between 2 USRP's
Hi Tom, I have actually added a jpg file which shows the output when given the command of uhd_fft. Actually,my experiment is to transmit different data packets to the receiver with minimized errors with ./benchmark_tx.py -f 2.435G and ./benchmark_rx.py -f 2.435G as commands . May I please know of how can to set the gain in this picture and also how this picture is useful for the reception of data packets. Please help as I am new to using GNU Radio and USRP. Thank you. Regards, John Attachments: http://www.ruby-forum.com/attachment/10951/Screenshot_from_2015-08-03_16_03_15.png -- Posted via http://www.ruby-forum.com/. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Communication problems between 2 USRP's
Hi Tom, Attached is the picture that I have sent you previously. I have somewhat adjusted the receiver gain for the signal to be a flat one. As you have mentioned before about how to apply the gain settings to the benchmark scripts, how do you suggest I do that? Also, how do I change the transmitting gain setting. If I do this, will I be able to receive the data packet correctly?. I mean, I need to get n_right=1, that is the CRC check needs to be right. Please suggest as to what I can do. Thanks. Regards, John Attachments: http://www.ruby-forum.com/attachment/10970/Screenshot_from_2015-08-07_16_49_26.png -- Posted via http://www.ruby-forum.com/. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] Channel setting for USRP
Hi all, I want to transmit the data between two USRP's and make them communicate with each other. But I guess the packets are not being received properly. My USRP daughterboard model is XCVR2450. When I am running ./benchmark_tx.py -f 2.435G, it is starting to transmit the packets but a small error occured given below, linux; GNU C++ version 4.8.4; Boost_105500; UHD_003.009.git-144-g407e3086 Using Volk machine: avx_64_mmx -- Opening a USRP1 device... -- Using FPGA clock rate of 64.00MHz... No gain specified. Setting gain to 7.50 (from [-20.00, 35.00]) UHD Warning: The hardware does not support the requested TX sample rate: Target sample rate: 0.05 MSps Actual sample rate: 0.25 MSps Symbol Rate: 25000.00 Requested sps: 2.00 Given sample rate: 25.00 Actual sps for rate: 10.00 Requested sample rate: 5.00 Actual sample rate: 25.00 ..U...terminate called after throwing an instance of 'uhd::runtime_error' what(): RuntimeError: usb tx2 transfer status: 1 Aborted (core dumped). But towards the receiver side, I gave the command ./benchmark_rx.py -f 2.435GG,it has shown the result given below with n_right=0. linux; GNU C++ version 4.8.4; Boost_105500; UHD_003.009.git-144-g407e3086 Using Volk machine: avx_64_mmx -- Opening a USRP1 device... -- Using FPGA clock rate of 64.00MHz... No gain specified. Setting gain to 56.25 (from [0.00, 112.50]) UHD Warning: The hardware does not support the requested RX sample rate: Target sample rate: 0.05 MSps Actual sample rate: 0.25 MSps Symbol Rate: 25000.00 Requested sps: 2.00 Given sample rate: 25.00 Actual sps for rate: 10.00 Requested sample rate: 5.00 Actual sample rate: 25.00 ok = False pktno = 53034 n_rcvd =1 n_right =0 ok = False pktno = 24 n_rcvd =2 n_right =0 ok = False pktno = 35 n_rcvd =3 n_right =0 ok = False pktno = 44 n_rcvd =4 n_right =0 ok = False pktno = 46 n_rcvd =5 n_right =0 ok = False pktno = 46 n_rcvd =6 n_right =0 ok = False pktno = 3872 n_rcvd =7 n_right =0 ok = False pktno = 12304 n_rcvd =8 n_right =0 ok = False pktno = 49 n_rcvd =9 n_right =0 ok = False pktno = 50 n_rcvd = 10 n_right =0 ok = False pktno = 54 n_rcvd = 11 n_right =0 ok = False pktno = 200 n_rcvd = 12 n_right =0 ok = False pktno = 63 n_rcvd = 13 n_right =0 How would I be able to know if the USRP is maintained in the same channel?What commands do I need to give so that the packet is received correctly as n_right=1. My USRP can access in the range of 2.4GHZ to 5GHZ. Please advice as to what I can do. Thanks Regards, John -- Posted via http://www.ruby-forum.com/. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Communication problems between 2 USRP's
Hi Tom, Thanks for the reply. I have been trying to import ./benchmark_tx.py -f 2.435G and ./benchmark_rxpy -f 2.435G commands and I have not yet been able to resolve the problem. I am attaching the files of the benchmark scripts. What do I need to change in order for my packet to receive correctly? Please help as I am new to GNU Radio. Regards, John Attachments: http://www.ruby-forum.com/attachment/11043/benchmark_rx.py http://www.ruby-forum.com/attachment/11044/benchmark_tx.py http://www.ruby-forum.com/attachment/11045/Screenshot_from_2015-08-07_16_49_26.png -- Posted via http://www.ruby-forum.com/. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] USRP's not Communicating
Hello, I want to transmit the data between two USRP's and make them communicate with each other. But I guess the packets are not being received properly. I am connected the two USRP's to the same laptop and trying it. Is that applicable? I mean, will it work if I do that? Or should I connect to two computers and perform that? I have been receiving this error. linux; GNU C++ version 4.8.4; Boost_105500; UHD_003.009.git-144-g407e3086 Using Volk machine: avx_64_mmx -- Opening a USRP1 device... -- Using FPGA clock rate of 64.00MHz... No gain specified. Setting gain to 56.25 (from [0.00, 112.50]) UHD Warning: The hardware does not support the requested RX sample rate: Target sample rate: 0.05 MSps Actual sample rate: 0.25 MSps Symbol Rate: 25000.00 Requested sps: 2.00 Given sample rate: 25.00 Actual sps for rate: 10.00 Requested sample rate: 5.00 Actual sample rate: 25.00 ok = False pktno = 53034 n_rcvd =1 n_right =0 ok = False pktno = 24 n_rcvd =2 n_right =0 ok = False pktno = 35 n_rcvd =3 n_right =0 ok = False pktno = 44 n_rcvd =4 n_right =0 ok = False pktno = 46 n_rcvd =5 n_right =0 ok = False pktno = 46 n_rcvd =6 n_right =0 ok = False pktno = 3872 n_rcvd =7 n_right =0 ok = False pktno = 12304 n_rcvd =8 n_right =0 ok = False pktno = 49 n_rcvd =9 n_right =0 ok = False pktno = 50 n_rcvd = 10 n_right =0 ok = False pktno = 54 n_rcvd = 11 n_right =0 ok = False pktno = 200 n_rcvd = 12 n_right =0 ok = False pktno = 63 n_rcvd = 13 n_right =0 Please suggest. Thank you Regards, Ravi -- Posted via http://www.ruby-forum.com/. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
