Installing SDR applications on a Raspberry Pi and Debian

This document will guide you through installing SDR applications on the platform built in the document: Installing drivers for the SDRplay RSP1A and HackRF One on Raspberry Pi and Debian and depends on that installation.

This document is intended to be followed in the order it is written. If you want to skip installing one of applications, there may be some missing prerequisites.

Install:

Install QRadioLink
Multimode SDR transceiver for GNU radio using the Internet for VOIP communication (radio over IP) with various analog, digital voice and digital video modes.
- Prerequisites
  - mumble
```
sudo apt install mumble mumble-server
```
  - Install additional packages:
```
sudo apt-get install protobuf-compiler libopus-dev libspeexdsp1 libspeexdsp-dev libjpeg62-turbo libjpeg62-turbo-dev libconfig++9v5 libconfig++-dev libftdi1 libftdi-dev libsndfile1-dev libsndfile1 libjpeg-dev libprotoc-dev
```
- Install
```
cd ~/
git clone https://github.com/qradiolink/qradiolink
cd qradiolink/
# To get the latest version with recent changes (instead of git checkout master):
# git checkout next
# To get the normal release
git checkout master
sh ./build_debian.sh
```
- To run
```
build/qradiolink
# or from anywhere
/home/pi/qradiolink/build/qradiolink
```
  - Click the Setup tab
  - Click General Settings
  - For SDRplay
    - In RX device args, enter soapy=0,driver=sdrplay
    - In RX antenna, enter 0
  - For HackRF
    - In RX device args, enter hackrf=0
    - In RX antenna, enter 0
    - In TX device args, enter hackrf=0
    - In TX antenna, enter 0
  - Under Radio settings, change Output audio device to alsa_output.platform-bcm2835_audio.stereo-fallback
  - Click the Spectrum tab
  - Click RX to start the SDR receiver.
  - Note: For the first time an SDR application is run after GNU Radio installation, you may have to wait 2-3 minutes for the terminal to print 3 lines of "gr::vmcircbuf_sysv_shm: shmat (3): Invalid argument". It will work correctly after that.There is a function in GNU Radio that does not work on the Raspberry Pi. GNU Radio will eventually fix itself.

CubicSDR - build from source to get the latest version that supports the RSP Duo.
A very nice versatile SDR application.

Prerequisites

Install FFTW3 if not currently installed. Note libgtk2.0-dev is removed.

sudo apt-get install freeglut3 freeglut3-dev libgtk-3-dev libtinyxml2.6.2v5

liquid-dsp

cd ~/
git clone https://github.com/jgaeddert/liquid-dsp
cd liquid-dsp
./bootstrap.sh
CFLAGS="-march=native -O3" ./configure --enable-fftoverride
make -j 4
sudo make install
sudo ldconfig

RtAudio

sudo apt-get install libasound2-dev portaudio19-dev
cd ~/
Download http://www.music.mcgill.ca/~gary/rtaudio/release/rtaudio-5.1.0.tar.gz
tar -zxvf rtaudio-5.1.0.tar.gz
cd rtaudio-5.1.0
# ./configure --help # display all the available options
./configure --with-jack --with-alsa --with-pulse
mkdir build
cd build
cmake ../
make -j 4
sudo make install
sudo ldconfig
cd tests
# Try one of these to see if it will play something. Press CTRL-C to exit.
./playsaw 1 48000
./playsaw 1 44100
./playsaw 2 44100 # 2 different sawtooth waveforms, one in each speaker

# If you don't hear a sound from any of these, it may have selected the headphone output.
# Set speakers as default
pacmd set-default-sink 0

wxWidgets
- CubicSDR wants to use a static installation of wxWidgets. CubicSDR has been updated to use wxWidgets 3.1.5. It appears that older versions will not work. I have not been able to get the packaged version to work. This will take quite a while.
  The installation path for this installation is included in the CubicSDR installation command.
- Prerequisites:
  Remove all wxWidgets items using the Package Manager.
- Install
  Note: replace '~/Develop/wxWidgets-staticlib' with your own path if you installed it in a different location. Use this path when building CubicSDR. Note that ./configure parameters are updated and they have a CXXFLAGS parameter which would conflict with the CXXFLAGS environment variable.
```
cd ~/ 
git clone --recurse-submodules https://github.com/wxWidgets/wxWidgets.git
cd wxWidgets/
mkdir -p ~/Develop/wxWidgets-staticlib
./autogen.sh
./configure --with-opengl --disable-glcanvasegl --disable-shared --enable-monolithic --with-libjpeg --with-libtiff --with-libpng --with-zlib --disable-sdltest --enable-unicode --enable-display --enable-propgrid --disable-webkit --disable-webview --disable-webviewwebkit --prefix=`echo ~/Develop/wxWidgets-staticlib` CXXFLAGS="-std=c++0x"
make -j4
sudo make install
sudo ldconfig
```

Build CubicSDR

cd ~/
git clone https://github.com/cjcliffe/CubicSDR.git
cd CubicSDR
mkdir build
cd build
# Works with HDMI, Headphones and Default
cmake ../ -DOTHER_LIBRARIES:FILEPATH=/usr/lib/gcc/aarch64-linux-gnu/10/libatomic.so -DCMAKE_BUILD_TYPE=Release -DwxWidgets_CONFIG_EXECUTABLE=~/Develop/wxWidgets-staticlib/bin/wx-config -DUSE_HAMLIB=1 -DUSE_AUDIO_PULSE=0 -DUSE_AUDIO_OSS=0 -DUSE_AUDIO_ALSA=1
make -j 4
# You can now run the build from the folder.
cd x64/
./CubicSDR

# Install CubicSDR (and launcher in Applications menu)
sudo make install
sudo ldconfig

There will be an icon for CubicSDR in the Applications Menu in the Other group It will appear after a restart.

gqrx
Can operate as an AM/FM/SSB receiver with audio output or as an FFT-only instrument. There are also various hooks for interacting with external applications using network sockets. One of the few that has a noise blanker and allows custom bandpass adjustment.
- The version in the packager is fairly recent. If you install that, skip to the "To start gqrx..." section below.
- Prerequisites
```
# portaudio is optional
sudo apt install portaudio19-dev
```
- Install
```
# For a 32-bit operating system:
export CXXFLAGS='-O2 -march=native -mtune=native'
export CFLAGS='-O2 -march=native -mtune=native'

# For a 64-bit operating system on a Raspberry Pi 4:
export CXXFLAGS='-O3 -mtune=cortex-a72'
export CFLAGS='-O3 -mtune=cortex-a72'

cd ~/
git clone https://github.com/csete/gqrx.git gqrx
cd gqrx
mkdir build
cd build
cmake ..
make -j 4
sudo make install
sudo ldconfig
```
- To start gqrx, type gqrx at the command prompt and press enter.
- The Configure I/O devices dialogue box will appear.
- Select your RSP device from the Devices menu.
- Select your audio device
- The defaults for the other items should be OK.
- Click OK.
- Click the Start DSP processing button on the top left of the gqrx window.
- Note: When using AM, be sure to uncheck DCR in the "..." button to the far right of Mode, or there will be no audio.
SdrGlut
A simple software defined radio player. It is small, fast and efficient. Very low CPU load. Has Search and Scan Features. Supports SDRplay RSPduo running in Dual Tuner mode.
- Prerequisites
  - Copy RtAudio.h to the place that SdrGlut will look for it
```
sudo mkdir /usr/local/include/rtaudio
sudo cp /usr/local/include/RtAudio.h /usr/local/include/rtaudio/
```
  - It needs
```
sudo apt-get install libopenal-dev libalut0 libalut-dev
```
- Problems With libliquid (installed earlier)
  - There are 2 sections in ~/Desktop/SdrGlut/MainSource/firstFile.h that contain:
    - #define LIQUID_VERSION_4 1
    - #define WINDOWS_LONG_NAMES 1
  - If your compile in the following section fails on libliquid items, comment out one of these sections in MainSource/firstFile.h by placing /* before and */ after the section. It that doesn't help, remove the comments and place them around the other section and try again.
- Install
```
cd ~/Desktop
git clone https://github.com/righthalfplane/SdrGlut.git
cd SdrGlut
make -f makefileUbunta

Run the program:
./sdrglut.x
or
~/Desktop/SdrGlut/sdrglut.x
```
- It is not uncommon for audio to be distorted. Try this fix, which will work for most installations:
```
sudo featherpad /etc/openal/alsoft.conf
```
- Find the line: #periods = 3 Remove the "#" and change it to periods = 4
- Reboot and run GdrGlut. The audio should be good.

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