== Spectrum Sensing with USRP2974 == === Description === In this tutorial we'll demonstrate how to run a spectrum sensing application on a USRP2974 in COSMOS testbed. === Prerequisites === In order to access the test bed, create a reservation and have it approved by the reservation service. Access to the resources are granted after the reservation is confirmed. Please follow the process shown on [wiki:cosmos_workflow the COSMOS work flow page] to get started. === Resources === One SDR - USRP2974 is required for this experiment. === Execution === ==== Load an image ==== * Once a reservation for the desired domain is approved, [Documentation/Short/Login login into your reserved domain.] * Load baseline_uhd_1804.ndz on your resource. [Documentation/Short/LoadImage - this is done via OMF commands.] {{{#!shell omf load -i baseline_uhd_1804.ndz -t sdr2-s1-lg1.bed.cosmos-lab.org }}} * Turn the node on {{{#!shell omf tell -a on -t sdr2-s1-lg1.bed.cosmos-lab.org }}} * Once your node is ready and turned on, ssh into the Krypton's host {{{#!shell-session console:~$ ssh root@sdr2-s1-lg1 }}} ==== Configure and detect the radio ==== * The USRP 2974 requires a PCIe driver to control the FPGA with the embedded PC. In the provided images, this will load automatically on boot. If it has issues, you can run it manually via {{{ systemctl restart niusrprio.service}}}. Detailed steps for driver installation and radio detection are on the [https://wiki.cosmos-lab.org/wiki/tutorials/krypton_usage Krypton usage page]. There is also a trouble shooting section at the bottom on that page to update the Krypton's internal firmware if necessary. * Run ''uhd_find_devices' and check if the X310 is detected {{{#!shell-session root@sdr2-s1-lg1:~# uhd_find_devices --args="type=x300" [INFO] [UHD] linux; GNU C++ version 7.4.0; Boost_106501; UHD_3.14.1.1-release -------------------------------------------------- -- UHD Device 0 -------------------------------------------------- Device Address: serial: 3166636 fpga: XG name: product: X310 resource: RIO0 type: x300 }}} The output enumerates all the SDRs that were detected. Krypton has only one PCIe radio device of type=x300. * Use the ''uhd_usrp_probe'' command to get more details on the x300. Specifying ''resource=rio0'' ensures only the directly connected radio is probed, instead of the radios on the network. {{{#!shell-session root@sdr2-s1-lg1:~# uhd_usrp_probe --args="resource=rio0,type=x300" [INFO] [UHD] linux; GNU C++ version 7.4.0; Boost_106501; UHD_3.14.0.HEAD-0-g6875d061 [INFO] [X300] X300 initialization sequence... [INFO] [X300] Connecting to niusrpriorpc at localhost:5444... [INFO] [X300] Using LVBITX bitfile /usr/local/share/uhd/images/usrp_x310_fpga_HG.lvbitx... [INFO] [X300] Radio 1x clock: 200 MHz [INFO] [GPS] Found an internal GPSDO: LC_XO, Firmware Rev 0.929a [INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D00000000000) [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1301 MB/s) [INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1303 MB/s) [INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD100000000001) [INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD100000000001) [INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0000000000000) [INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0000000000000) [INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0000000000000) [INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0000000000000) _____________________________________________________ / | Device: X-Series Device | _____________________________________________________ | / | | Mboard: X310 | | revision: 12 | | revision_compat: 7 | | product: 30810 | | mac-addr0: 00:11:22:33:44:55 | | mac-addr1: 66:77:88:99:aa:bb | | gateway: 192.168.10.1 | | ip-addr0: 192.168.10.2 | | subnet0: 255.255.255.0 | | ip-addr1: 192.168.40.2 | | subnet1: 255.255.255.0 | | ip-addr2: 255.255.255.255 | | subnet2: 255.255.255.0 | | ip-addr3: 255.255.255.255 | | subnet3: 255.255.255.0 | | serial: 31557B9 | | FW Version: 6.0 | | FPGA Version: 35.1 | | FPGA git hash: 4c165a5 | | RFNoC capable: Yes | | | | Time sources: internal, external, gpsdo | | Clock sources: internal, external, gpsdo | | Sensors: gps_gpgga, gps_gprmc, gps_time, gps_locked, gps_servo, ref_locked | | _____________________________________________________ | | / | | | RX Dboard: A | | | ID: UBX-TDD (0x0203) | | | Serial: 31584CF | | | _____________________________________________________ | | | / | | | | RX Frontend: 0 | | | | Name: UBX RX | | | | Antennas: TX/RX, RX2, CAL | | | | Sensors: lo_locked | | | | Freq range: 10.000 to 6000.000 MHz | | | | Gain range PGA0: 0.0 to 31.5 step 0.5 dB | | | | Bandwidth range: 160000000.0 to 160000000.0 step 0.0 Hz | | | | Connection Type: IQ | | | | Uses LO offset: No | | | _____________________________________________________ | | | / | | | | RX Codec: A | | | | Name: ads62p48 | | | | Gain range digital: 0.0 to 6.0 step 0.5 dB | | _____________________________________________________ | | / | | | RX Dboard: B | | | ID: UBX-TDD (0x0203) | | | Serial: 31584EE | | | _____________________________________________________ | | | / | | | | RX Frontend: 0 | | | | Name: UBX RX | | | | Antennas: TX/RX, RX2, CAL | | | | Sensors: lo_locked | | | | Freq range: 10.000 to 6000.000 MHz | | | | Gain range PGA0: 0.0 to 31.5 step 0.5 dB | | | | Bandwidth range: 160000000.0 to 160000000.0 step 0.0 Hz | | | | Connection Type: IQ | | | | Uses LO offset: No | | | _____________________________________________________ | | | / | | | | RX Codec: B | | | | Name: ads62p48 | | | | Gain range digital: 0.0 to 6.0 step 0.5 dB | | _____________________________________________________ | | / | | | TX Dboard: A | | | ID: UBX-TDD (0x0202) | | | Serial: 31584CF | | | _____________________________________________________ | | | / | | | | TX Frontend: 0 | | | | Name: UBX TX | | | | Antennas: TX/RX, CAL | | | | Sensors: lo_locked | | | | Freq range: 10.000 to 6000.000 MHz | | | | Gain range PGA0: 0.0 to 31.5 step 0.5 dB | | | | Bandwidth range: 160000000.0 to 160000000.0 step 0.0 Hz | | | | Connection Type: QI | | | | Uses LO offset: No | | | _____________________________________________________ | | | / | | | | TX Codec: A | | | | Name: ad9146 | | | | Gain Elements: None | | _____________________________________________________ | | / | | | TX Dboard: B | | | ID: UBX-TDD (0x0202) | | | Serial: 31584EE | | | _____________________________________________________ | | | / | | | | TX Frontend: 0 | | | | Name: UBX TX | | | | Antennas: TX/RX, CAL | | | | Sensors: lo_locked | | | | Freq range: 10.000 to 6000.000 MHz | | | | Gain range PGA0: 0.0 to 31.5 step 0.5 dB | | | | Bandwidth range: 160000000.0 to 160000000.0 step 0.0 Hz | | | | Connection Type: QI | | | | Uses LO offset: No | | | _____________________________________________________ | | | / | | | | TX Codec: B | | | | Name: ad9146 | | | | Gain Elements: None | | _____________________________________________________ | | / | | | RFNoC blocks on this device: | | | | | | * DmaFIFO_0 | | | * Radio_0 | | | * Radio_1 | | | * DDC_0 | | | * DDC_1 | | | * DUC_0 | | | * DUC_1 }}} ==== Prepare the application ==== * Download the application source code from the attachment section below. {{{#!shell-session root@sdr2-s1-lg1:~# wget https://wiki.cosmos-lab.org/raw-attachment/wiki/tutorials/basic_usage/spectrum_view.tar.gz root@sdr2-s1-lg1:~# tar -zxvf spectrum_view.tar.gz }}} * Please refer to the README file in SPECTRUM_VIEW directory for instructions on compiling and running the application. Before compiling the application, install and compile a few dependencies. {{{#!shell-session root@sdr2-s1-lg1:~# apt update root@sdr2-s1-lg1:~# apt-get -y install libboost-all-dev liblog4cxx-dev cmake libfftw3-dev libxml2-dev libpopt-dev libsqlite3-dev pkg-config libxml2-utils gnulib root@sdr2-s1-lg1:~# git clone https://github.com/zaphoyd/websocketpp.git root@sdr2-s1-lg1:~# pushd websocketpp root@sdr2-s1-lg1:~/websocketpp# cmake . -DBUILD_EXAMPLES=ON -DBUILD_TESTS=ON root@sdr2-s1-lg1:~/websocketpp# make -j 4 root@sdr2-s1-lg1:~/websocketpp# make install root@sdr2-s1-lg1:~/websocketpp# popd }}} Now if all the dependencies installed successfully, compile application. {{{#!shell-session root@sdr2-s1-lg1:~/SPECTRUM_VIEW# make }}} ==== Setup SSH tunnel ==== * Set up SSH tunnel from your local port 5002 to sdr2-s1-lg1.bed.cosmos-lab.org:9002 (See [https://wiki.cosmos-lab.org/wiki/tutorials/ssh_tunnel]) This will be used by the web app to connect to a server running on the Krypton's host. ==== Run the experiment ==== * From within the ''SPECTRUM_VIEW'' directory make and run the application to read samples from the Krypton's radio. There are two channels inside the radio which are being read out but only the first channel is displayed. {{{#!shell-session root@sdr2-s1-lg1:~/SPECTRUM_VIEW# ./app_read_sdr_samples INFO 11:51:08.262 (main.cpp:623) - Starting command server at 5180 INFO 11:51:08.262 (main.cpp:175) - Starting websock server at 9002 ........... }}} In short the application runs a server listening for commands. * Just to briefly demonstrate some functionality, open the spectrum_view.html file in a Chrome browser. When the viewer is first opened, the page display should be similar to the following || [[Image(basic_usage_spectrum_view_1.png, width=500px)]] || Ensure the localhost field is set to ''localhost:5002'' and the device type field is set to ''type=x300''. * Click the ''connect'' button once and a "WebSocket Connection" statement should be output by the application. Now click on ''connect'' again to create a device handle. Finally click on ''submit'' to adjust the radio parameters and the ''Halted'' button to display a spectrogram. Keep the default values for RATE, FREQ, GAIN and click on the HALTED button. This should display the spectrum if all went well. || [[Image(basic_usage_spectrum_view_2.png, width=500px)]] || === Troubleshooting === Check the troubleshooting section in the [https://wiki.cosmos-lab.org/wiki/tutorials/krypton_usage Krypton usage page] for common errors.