ALTAIR 8800micro kit from Briel Computers
Setting up the Airspy R2
4 JunAdd udev Rules
sudo vi /etc/udev/rules.d/99-airspy.rules
SUBSYSTEMS=="usb", ATTRS{idVendor}=="1d50", ATTRS{idProduct}=="60a1", MODE:="0666"
sudo udevadm control --reload-rules
CMakeLists.txt for dial_tone.cc
30 MayIf you want to compile dial_tone.cc outside of either the GR source tree or OOT module, this is the minimum required CMakeLists.txt (courtesy of Johnathan Corgan)
cmake_minimum_required(VERSION 2.6)
project(dialtone CXX)
find_package(Boost "1.35" COMPONENTS system)
set(GR_REQUIRED_COMPONENTS RUNTIME ANALOG AUDIO)
find_package(Gnuradio "3.7.2" REQUIRED)
include_directories(${GNURADIO_ALL_INCLUDE_DIRS})
add_executable(dialtone dial_tone.cc)
target_link_libraries(dialtone ${Boost_LIBRARIES} ${GNURADIO_ALL_LIBRARIES})
Setting up the Ettus USRP E310
29 Jun
Add udev Rules for E310 Serial Console
sudo vi /etc/udev/rules.d/99-usrp-e310.rules
SUBSYSTEMS=="usb", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6015", MODE:="0666"
sudo udevadm control --reload-rules
Serial Console Login
Plug in power and wait a few seconds for E310 to boot, then plug in microUSB.
dmesg to figure out the assigned serial port (i.e. /dev/ttyUSB4)
screen /dev/ttyUSB4 115200
Login as root
Setting Static IP
GQRX Tips
21 Dec
QT5
Prior to installation of gqrx make sure QT5 is available by installing the following:
qt5
qt5-devel
Pulse Audio
Prior to installation of gqrx make sure pulseaudio is available during build by installing the following:
pavucontrol
pavumeter
pulseaudio-libs-devel
Install gqrx
git clone https://github.com/csete/gqrx.git
cd gqrx
mkdir build
cd build
qmake-qt5 ..
make -j8
sudo make install
Typical device strings
For the b200:
uhd,type=b200,nchan=1
For the X310 with LFRX in slot 2:
uhd,addr=192.168.40.2,subdev=B:A,nchan=1
For the X310 with WBX in slot 1:
uhd,addr=192.168.40.2,nchan=1
For the N210 with LFRX:
uhd,addr=192.168.1.13,subdev=A:A,nchan=1
When switching between devices in gqrx the gain control changes will segfault the application. Fix this by deleting the “gains” section in:
~/.config/gqrx/default.conf
Sending gqrx audio to fldigi
Install fldigi with yum
Configure fldigi sound card to use pulseaudio, leaving server string empty
Launch pulseaudio volume control, and under recording tab, fldigi capture from monitor of built-in audio analog stereo, and set level to 0 dB.
Adjust fldigi waterfall upper signal level and signal range.
Adding new systems to Hyperspin
28 NovThis example will add Colecovision.
Edit this file:
E:\HyperSpin\Databases\Main Menu\Main Menu.xml
To add a system entry:
<game name="Colecovision"/>
Create a new ini file by copying an existing one (such as Atari 5200.ini):
E:\HyperSpin\Settings\Colecovision.ini
Launch:
E:\HyperSpin\HyperSync Cloud\HyperSync Loader.exe
Add ColecoVision, set all to Default, and sync database.
Launch:
E:\HyperSpin\HyperLaunch\HyperLaunchHQ\HyperLaunchHQ.exe
Select GLOBAL system and click Emulators tab.
Select MESS and change path to:
E:\HyperSpin\Emulators\MESS\mess64.exe
Click Settings tab and change 7z Enabled to True and Extract Path to:
E:\7z_temp
Select Colecovision system and click Emulators tab.
Set Rom Paths to:
E:\HyperSpin\HyperSpin_Ready\Cart Systems\Coleco - ColecoVision
Set Default Emulator to MESS
Launch:
E:\HyperSpin\HyperLaunch\HyperLaunch.exe
and test a game to be sure it launches.
Setting up NI GPIB-USB-HS under Linux
26 JulMostly stolen from: http://www.cl.cam.ac.uk/~osc22/tutorials/gpib_usb_linux.html
Note unlike the ni_usb_b, this is the ni_usb_hs so no firmware has to be loaded at boot, thus gpib_config can be called directly.
Get latest source code
http://linux-gpib.sourceforge.net/
Typical build in /usr/local/src with
./configure
make
sudo make install
Edit configuration
sudo vi /etc/gpib.conf
board_type = "ni_usb_b"
name = "gpib0"
Add udev rules
sudo vi /etc/udev/rules.d/99-linux_gpib_ni_usb.rules
SUBSYSTEM=="usb", ACTION=="add", ENV{DEVTYPE}=="usb_device", ATTR{idVendor}=="3923", ATTR{idProduct}=="709b", MODE="660", GROUP="username", SYMLINK+="usb_gpib"
SUBSYSTEM=="usb", ACTION=="add", ENV{DEVTYPE}=="usb_device", ATTR{idVendor}=="3923", ATTR{idProduct}=="709b", RUN+="/usr/local/sbin/gpib_config"
KERNEL=="gpib[0-9]*", ACTION=="add", MODE="660", GROUP="username"
sudo udevadm control –reload-rules
Note udev will not run the gpib_config at boot, so add it in rc.local
sudo vi /etc/rc.d/rc.local
#!/bin/sh
/usr/local/sbin/gpib_config
exit 0
sudo chmod +x /etc/rc.d/rc.local
sudo systemctl enable rc-local.service
systemctl status rc-local.service
Tests
Now plug in the adapter and run ibtest
Reboot and run ibtest
Linux Multimedia
19 Jul
Logitech C615 HD Webcam
sudo vi /etc/udev/rules.d/99-webcam.rules
SUBSYSTEMS=="usb", ATTRS{idVendor}=="046d", ATTRS{idProduct}=="082c", MODE:="0666"
sudo udevadm control --reload-rules
Dell XPS 13 Webcam
sudo vi /etc/udev/rules.d/99-webcam.rules
SUBSYSTEMS=="usb", ATTRS{idVendor}=="0bda", ATTRS{idProduct}=="5752", MODE:="0666"
sudo udevadm control --reload-rules
RPM Fusion Repository
sudo yum localinstall --nogpgcheck http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
GUVCView Webcam Recording
sudo yum install libwebcam guvcview
Change resolution to 1280×720 on XPS-13
Set sound device to hw:2,0 for Logitech webcam
Screen Recording
sudo yum install gtk-recordmydesktop
Set sound device to DEFAULT for Logitech webcam
May also need to use hw:0,0 (use arecord -l to list input devices)
Video Editing
sudo yum install openshot
Video Playback
sudo yum install vlc
Setting up the Ettus USRP B200
10 JunUsing a Syba SD-PEX20122 (VLI VL80x chipset) PCIE USB 3.0 controller and 1 meter cable
Add udev Rules
sudo vi /etc/udev/rules.d/99-usrp-b200.rules
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2500", ATTRS{idProduct}=="0020", MODE:="0666"
sudo udevadm control --reload-rules
Realtime Priority
sudo vi /etc/security/limits.conf
# Add for USRP realtime priority
myusername – rtprio 99
Will require re-login
Update Firmware
sudo /usr/local/lib64/uhd/utils/uhd_images_downloader.py
Probe
uhd_find_devices --args="type=b200"
Benchmark
cd /usr/local/lib64/uhd/examples
./benchmark_rate --rx_rate 45E6 --args "type=b200, master_clock_rate=45E6"
Baudline Tips
20 Apr
Install extra Fedora fonts
sudo yum install xorg-x11-fonts-misc
sudo yum install xorg-x11-fonts-ISO8859-1-75dpi
Reading data file from GNU Radio
GNU Radio file sink with input type complex writes IEEE 754 single-precision floats:
f = scipy.fromfile(open("filename"), dtype=scipy.complex64)
Baudline file raw parameters
Decompression: OFF
Initial byte offset: 0
Sample Rate: custom
Channels: 2
Quadrature: ON
Flip Complex: ON
Decode Format: 32 bit float, little endian
Normalization: 1 maximum sample value
RF Power Amp 