I've been trying as well to use GR on RPi (model 3), the ultimate purpose would be radio astronomy. A smaller form factor such as RPI's makes a remote installation more palatable than a full PC.
I wasn't able to compile it on RPi but compromised on using a more recent version (3.7.9-3~bpo8+1) taken from jessie-backports. The steps are below. sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8B48AD6246925553 7638D0442B90D010 sudo vi /etc/apt/sources.list and add the following line: deb http://ftp.debian.org/debian jessie-backports main sudo apt-get update sudo apt-get -t jessie-backports install gnuradio On the positive side, GR works on RPi3. However, it does keep one core to 100% in many cases. This was with input from an SDR with the 2Msps rate, though. Actually, one more problem: audio output. That part didn't work ("check topology failed on audio_alsa_sink"); I posted a message on the list the other day. I cannot say it's a GR problem, could be mine; I have yet to understand what the problem is. JL. On Wed, Apr 13, 2016 at 7:45 AM, Rob Roschewsk <pabut...@gmail.com> wrote: > Marcus, > > Thanks for responding. > > I'm looking to build a headless FM receiver to record and stream public > service communication (fire, police, etc.). We will stream as many channels > as possible that fall into a given passband. > > I already have a system running on a PC and now would like to port it to > the PI. > > I understand it maybe an "up hill" path, but the thought is to deploy > multiple inexpensive units around a geographic area all feeding a central > streaming server. > > The Pi is running Raspian Jesse .... I started with the distribution > packages but ran into problems right out of the blocks and thought it would > be best to use the latest code before asking questions :) > > I understand cross compiling is the way to go. > > Since I brought it up, here was the error I saw when I tried to run the > script that runs on the PC but fails spectacularly on the raspberry pi with > the precompiled packages .... > > roschews@raspberrypi:~/sdr/multirx $ ./multirx_nogui.py -s 49 noaa.xml > linux; GNU C++ version 4.9.1; Boost_105500; UHD_003.007.003-0 <0030070030> > -unknown > > high=162500000 low=162400000 span=100000 > center=162450000 > gr-osmosdr 0.1.3 (0.1.3) gnuradio 3.7.5 > built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf > bladerf rfspace airspy > Using device #0 Realtek RTL2838UHIDIR SN: 00000108 > Found Elonics E4000 tuner > Exact sample rate is: 1000000.026491 Hz > Using Volk machine: generic_orc > VOLK: Error allocating memory (posix_memalign: 22) > VOLK: Error allocating memory (posix_memalign: 22) > VOLK: Error allocating memory (posix_memalign: 22) > Segmentation fault >
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