[USRP-users] help with rfnoc radio

Snehasish Kar snehasish.cse at LIVE.COM
Thu Nov 9 11:02:49 EST 2017


Hello


I was trying to to use the rfnoc radio with two channels, which is connected to a qt frequency sink via DMA fifo. But on doing so,it gives me the following error. I have attached the grc file for your reference. I am using NI USRP 2954R with ubuntu 14.04. Please let me know where I am going wrong.


     GNU C++ version 4.8.4; Boost_105400; UHD_003.009.001-0-unknown

        [INFO] [UHDlinux; GNU C++ version 4.8.4; Boost_105400; UHD_4.0.0.rfnoc-devel-409-gec9138eb] 
        [INFO] [NIRIO] rpc_client stopping...
        [INFO] [NIRIO] rpc_client stopped.
        [INFO] [NIRIO] rpc_client stopping...
        [INFO] [NIRIO] rpc_client stopped.
        [INFO] [X300] X300 initialization sequence...
        [INFO] [X300] Connecting to niusrpriorpc at localhost:5444...
        [INFO] [NIRIO] rpc_client stopping...
        [INFO] [NIRIO] rpc_client stopped.
        [INFO] [X300] Using LVBITX bitfile /usr/local/share/uhd/images/usrp_x310_fpga_HG.lvbitx...
        [INFO] [NIRIO] rpc_client stopping...
        [INFO] [NIRIO] rpc_client stopped.
        [INFO] [X300] Setup basic communication...
        [INFO] [X300] Loading values from EEPROM...
        [INFO] [X300] Setup RF frontend clocking...
        [INFO] [X300] Radio 1x clock:200
        [INFO] [X300] Detecting internal GPSDO....
        [INFO] [GPS] Found an internal GPSDO: LC_XO, Firmware Rev 0.929a
        [WARNING] [GPS] update_cache: Malformed GPSDO string: LC_XO, Firmware Rev 0.929a
        [INFO] [RFNOC] [DMA FIFO] Running BIST for FIFO 0...
        [INFO] [RFNOC] pass (Throughput: 1300.6MB/s)
        [INFO] [RFNOC] [DMA FIFO] Running BIST for FIFO 1...
        [INFO] [RFNOC] pass (Throughput: 1304.6MB/s)
        [INFO] [RFNOC RADIO] Register loopback test passed
        [INFO] [RFNOC RADIO] Register loopback test passed
        [INFO] [RFNOC RADIO] Register loopback test passed
        [INFO] [RFNOC RADIO] Register loopback test passed
        [INFO] [CORES] Performing timer loopback test...
        [INFO] [CORES] Timer loopback test passed
        [INFO] [CORES] Performing timer loopback test...
        [INFO] [CORES] Timer loopback test passed
        [WARNING] [X300 RADIO] Requesting invalid sampling rate from device: 1 MHz. Actual rate is: 200 MHz.
        Traceback (most recent call last):
          File "/home/siddhartha/rfnoc/gr-ettus/examples/rfnoc/rfnoc_radio_host.py", line 253, in <module>
            main()
          File "/home/siddhartha/rfnoc/gr-ettus/examples/rfnoc/rfnoc_radio_host.py", line 241, in main
            tb = top_block_cls()
          File "/home/siddhartha/rfnoc/gr-ettus/examples/rfnoc/rfnoc_radio_host.py", line 93, in __init__
            self.uhd_rfnoc_streamer_radio_0.set_rx_freq(rx_freq, i)
          File "/usr/local/lib/python2.7/dist-packages/ettus/ettus_swig.py", line 2564, in set_rx_freq
            return _ettus_swig.rfnoc_radio_sptr_set_rx_freq(self, *args, **kwargs)
        RuntimeError: LookupError: Path not found in tree: /mboards/0/dboards/B/rx_frontends/freq/value
        terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::lock_error> >'
          what():  boost: mutex lock failed in pthread_mutex_lock: Invalid argument


BR

Snehasish
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