Archive | April, 2014

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

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GNURadio Tricks

20 Apr

Dynamic recording of files
Create a QT GUI Check Box with ID “Record” and set type to Boolean, and Default Value to False.

Create a variable with ID “file_name” and set Value to:
'data.bin' if Record==True else '/dev/null'

Create a File Sink with file “file_name”