I made this simple script that takes a signal from the fabulous USRP
and sends it the fabulous “baudline” software, so I thought I’d share
it.
FYI, this runs on Fedora 13.
#!/bin/sh
A simple script to get a signal from the fabulous USRP and
use the fabulous “baudline” for display
freq0=$1 ## NB: don’t use “M” or “G” , ie use 88500000, not 88.5M
decim0=$2 ## eg: 16, 32, 64
usrpargs0="$3" ## eg: “-R B -g 60”
###################
usrpsamplerate0=64000000
baudlinesamplerate0=$(($usrpsamplerate0 / $decim0))
#baudlineformat0=le32f ; usrpformat0="" ## floating point
baudlineformat0=le16 ; usrpformat0="–output-shorts" ## 16 signed
integers, little endian
usrp_rx_cfile.py $usrpformat0 $usrpargs0 -f $freq0 -d $decim0
/dev/stdout |
baudline -reset -channels 2 -quadrature -flipcomplex -stdin
-basefrequency $freq0 -format $baudlineformat0
-samplerate $baudlinesamplerate0