Re: sndfile::sndfile again
The libsndfile1-dev installs the header files. In general, the -dev extension installs the header files and sometimes the static libraries. It most likely crashed because of the lack of header files - it found the dynamic libraries which where installed with gnuradio - but no header files. Since you're building from source, you need to supply the header files. - Cinaed On 12/29/22 21:19, Larry Doolittle wrote: Cinaed - On Wed, Dec 28, 2022 at 06:31:17PM -0800, Cinaed Simson wrote: Hi Larry - try apt install libsndfile1-dev Yes, I confirm that is the solution. Thanks! Although it's more practical to apt-get install --no-install-recommends libsndfile1-dev to keep xtrx-dkms out of it. Both specifically because of https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1012616 xtrx-dkms: DKMS build fails with implicit declaration of functions and philosophically to keep unused dependencies out of my system. Since you installed gnuradio form Debian, you can always install gr-osmosdr from Debian and it will match your gnuradio install. True! Although I then needed libsndfile1-dev for the next builds on my list, gr-pdu_utils gr-sandia_utils gr-timing_utils gr-fhss_utils I also admit I'm still baffled how this missing dependency caused cmake to crash trying to link (g++) with -l sndfile::sndfile. - Larry
Re: sndfile::sndfile again
Cinaed - On Wed, Dec 28, 2022 at 06:31:17PM -0800, Cinaed Simson wrote: > Hi Larry - try > apt install libsndfile1-dev Yes, I confirm that is the solution. Thanks! Although it's more practical to apt-get install --no-install-recommends libsndfile1-dev to keep xtrx-dkms out of it. Both specifically because of https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1012616 xtrx-dkms: DKMS build fails with implicit declaration of functions and philosophically to keep unused dependencies out of my system. > Since you installed gnuradio form Debian, you can always install gr-osmosdr > from Debian and it will match your gnuradio install. True! Although I then needed libsndfile1-dev for the next builds on my list, gr-pdu_utils gr-sandia_utils gr-timing_utils gr-fhss_utils I also admit I'm still baffled how this missing dependency caused cmake to crash trying to link (g++) with -l sndfile::sndfile. - Larry
Re: USRP B210 overflow and underflow
On 29/12/2022 10:56, Karen young wrote: Hi, I am using a USRP B210 to transmit and receive pulse signals using attached antennas, and try to measure the phase delay between the transmitted and received signals. I do not understand why the following problems are happening. What can I do to fix them? Attached is the model. 1. The usrp_source overflow and usrp_sink underflow errors occur frequently, the received signal (in Red) is jumping accordingly as shown in Fig 1. 2. Since the transmitted signal is positive pulse, I am expecting the received signal is also positive. While the received signals are: sometimes positive peak, sometimes negative peaks as shown in Fig 2. Thanks Karen Overruns and Underruns are caused by your computer being unable to "keep up" with the sample streaming requirements of the hardware. You might add: num_recv_frames=256 num_send_frames=256 To your device arguments, which can help "ride through" short-term performance insufficiency.
