Hi, That's your code and your memory. Have you tried running it under valgrind?
HTH Nikos On Sat, Aug 13, 2022 at 11:43 PM <wozn...@gmail.com> wrote: > > Looked around on this mailing list and couldn’t find an explanation, but I’m > running in to random exceptions being thrown sometimes in my C++ I/Q recorder > application. I can’t seem to replicate it with the example code found in > “rx_samples_to_file”. Using g++ (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0. > > Code can be found here: > > https://github.com/cwozny/sdr_channelizer/blob/b3d96675e79b0e9d1e469c51dd45b1396432829b/cpp/record_iq_usrp.cpp > > Here is the output which happens sometimes, but not all of the time (cmd line > arguments are specifying to record 152.6 MHz at 60 Msps, 60 dB gain, 56 MHz > IF bandwidth, with a buffer size of 0.5 seconds and to run for 10 seconds): > > XXXXX:~/workarea/sdr_channelizer/cpp$ ./a.out 152.6 56 60 60 0.5 10 > > [INFO] [UHD] linux; GNU C++ version 9.4.0; Boost_107100; > UHD_4.2.0.HEAD-0-g321295fb > > [INFO] [B200] Detected Device: B200mini > > [INFO] [B200] Operating over USB 3. > > [INFO] [B200] Initialize CODEC control... > > [INFO] [B200] Initialize Radio control... > > [INFO] [B200] Performing register loopback test... > > [INFO] [B200] Register loopback test passed > > [INFO] [B200] Setting master clock rate selection to 'automatic'. > > [INFO] [B200] Asking for clock rate 16.000000 MHz... > > [INFO] [B200] Actually got clock rate 16.000000 MHz. > > FPGA version: > > Firmware version: pp�0� > > Using B200mini serial number > > Frequency = 152.6 MHz > > [INFO] [B200] Asking for clock rate 60.000000 MHz... > > [INFO] [B200] Actually got clock rate 60.000000 MHz. > > Sample Rate = 60 Msps > > Bandwidth = 56 MHz > > Disabled automatic gain control > > Gain = 60 dB > > [ERROR] [UHD] Exception caught in safe-call. > > in ~tx_vita_core_3000_impl > > at XXXXX/workarea/uhd/host/lib/usrp/cores/tx_vita_core_3000.cpp:49 > > this->clear(); -> AssertionError: accum_timeout < _timeout > > in wait_for_ack > > at XXXXX/workarea/uhd/host/lib/usrp/b200/b200_radio_ctrl_core.cpp:227 > > [ERROR] [UHD] Exception caught in safe-call. > > in ~b200_radio_ctrl_core_impl > > at XXXXX/workarea/uhd/host/lib/usrp/b200/b200_radio_ctrl_core.cpp:65 > > this->peek32(0); _async_task.reset(); -> AssertionError: accum_timeout < > _timeout > > in wait_for_ack > > at XXXXX/workarea/uhd/host/lib/usrp/b200/b200_radio_ctrl_core.cpp:227 > > [ERROR] [UHD] Exception caught in safe-call. > > in ~b200_radio_ctrl_core_impl > > at XXXXX/workarea/uhd/host/lib/usrp/b200/b200_radio_ctrl_core.cpp:65 > > this->peek32(0); _async_task.reset(); -> AssertionError: accum_timeout < > _timeout > > in wait_for_ack > > at XXXXX/workarea/uhd/host/lib/usrp/b200/b200_radio_ctrl_core.cpp:227 > > When the application doesn’t throw this error and runs to execution, it will > always display “Bus error (core dumped)” after it prints out the number of > overruns that occurred. Unsure if that is related or not. Here is an example > of it running to completion, but throwing the bus error at the end: > > XXXXX:~/workarea/sdr_channelizer/cpp$ ./a.out 152.6 56 60 60 0.3 10 > > [INFO] [UHD] linux; GNU C++ version 9.4.0; Boost_107100; > UHD_4.2.0.HEAD-0-g321295fb > > [INFO] [B200] Detected Device: B200mini > > [INFO] [B200] Operating over USB 3. > > [INFO] [B200] Initialize CODEC control... > > [INFO] [B200] Initialize Radio control... > > [INFO] [B200] Performing register loopback test... > > [INFO] [B200] Register loopback test passed > > [INFO] [B200] Setting master clock rate selection to 'automatic'. > > [INFO] [B200] Asking for clock rate 16.000000 MHz... > > [INFO] [B200] Actually got clock rate 16.000000 MHz. > > FPGA version: > > Firmware version: � > > Using B200mini serial number > > Frequency = 152.6 MHz > > [INFO] [B200] Asking for clock rate 60.000000 MHz... > > [INFO] [B200] Actually got clock rate 60.000000 MHz. > > Sample Rate = 60 Msps > > Bandwidth = 56 MHz > > Disabled automatic gain control > > Gain = 60 dB > > Received 18000960 > > Gain = 59 dB > > Received 18000570 > > Gain = 58 dB > > Received 18000525 > > Received 18000206 > > Received 18000475 > > Received 18000848 > > Received 18000572 > > Received 18000386 > > Received 18001343 > > Received 18000548 > > Received 18000222 > > Received 18000420 > > Received 18000553 > > Received 18000247 > > Received 18000365 > > Received 18000567 > > Received 18000261 > > Received 18000336 > > Received 18000582 > > Received 18000305 > > Gain = 57 dB > > Received 18000874 > > Received 18000711 > > Received 18000311 > > Received 18000868 > > Received 18000378 > > Received 18000096 > > Received 18000653 > > Received 18000582 > > Received 18000450 > > Received 18000517 > > Received 18001303 > > Received 18000844 > > Received 18000571 > > Received 18001314 > > Disabled RX > > There were 0 overruns. > > Bus error (core dumped) > > Has anyone run in to this before? > > _______________________________________________ > USRP-users mailing list -- usrp-users@lists.ettus.com > To unsubscribe send an email to usrp-users-le...@lists.ettus.com _______________________________________________ USRP-users mailing list -- usrp-users@lists.ettus.com To unsubscribe send an email to usrp-users-le...@lists.ettus.com
