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#! /bin/sh
if [ $1"x" = x ]; then
echo "./capture.sh <freq> [duration==10] [decim==112] [gain==52]"
echo "Example: ./capture.sh 940.4M"
exit 1
fi
FREQ=$1
DURATION=$2
if [ $2"x" = x ]; then
DURATION=10
fi
DECIM=$3
if [ $3"x" = x ]; then
DECIM=112
fi
GAIN=$4
if [ $4"x" = x ]; then
GAIN=52
fi
USRP_PROG=usrp_rx_cfile.py
while :; do
which "$USRP_PROG"
if [ $? -eq 0 ]; then
break
fi
USRP_PROG=/usr/share/gnuradio/usrp/usrp_rx_cfile.py
which "$USRP_PROG"
if [ $? -eq 0 ]; then
break
fi
echo "ERROR: usrp_rx_cfile.py not found. Make sure it's in your PATH!"
exit 1
done
FILE="capture_${FREQ}_${DECIM}.cfile"
samples=`expr 64000000 / $DECIM '*' $DURATION`
echo "Capturing for $DURATION seconds to $FILE ($samples samples)"
$USRP_PROG -g $GAIN -d "$DECIM" -f "$FREQ" -N $samples $FILE
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