pll_tx_sweep.sh

#!/bin/sh
echo "$0 <start> <end> <increment> <pause>"

start=$1
end=$2
inc=$3
pause=$4

if [ -z $inc ] ; then
  inc=5
fi

if [ -z $pause ] ; then
  pause=1
fi

# find the TX LO generator
for i in $(find /sys -name name)
do
  if [ "`cat $i`" = "adf4351-tx-lpc" ] ; then
     tx_lo_path=$(echo $i | sed 's:/name$::')
     if [ -z $start ] ; then
       start=400
     fi
     if [ -z $end ] ; then
       end=4000
     fi
     pll=out_altvoltage0_frequency
     break
  fi
  if [ "`cat $i`" = "ad9361-phy" ] ; then
     tx_lo_path=$(echo $i | sed 's:/name$::')
     if [ -z $start ] ; then
       start=100
     fi
     if [ -z $end ] ; then
        end=6000
     fi
     pll=out_altvoltage1_TX_LO_frequency
     break
  fi
done

if [ -z $tx_lo_path ] ; then
  echo "Can't find PLL"
  exit 1
fi


freq_tx() {
  echo $1 > $tx_lo_path/$pll
}

for i in `seq $start $inc $end`;
do
  echo $i
  freq_tx `expr $i \\* 1000000`
  sleep $pause
done