src/ambros

   1 #!/bin/sh
   2 # ambros:
   3 # control script for one channel
   4
   5 # directory of scripts
   6 cd `dirname $0`
   7 AMBROSDIR=`pwd`
   8
   9 # read global settings
  10 . $AMBROSDIR/constants.sh
  11
  12 if test "$1" = ""
  13 then cat <<EOT
  14 usage: $0 <channeldir>
  15
  16 AMBROS control script for channel <channeldir>
  17 EOT
  18 exit 1
  19 fi
  20
  21 # (re)generate morse code table
  22 cd $AMBROSDIR/morse && ./chargen.sh
  23 cd $AMBROSDIR
  24
  25 channeldir="$1"
  26 if test ! -d "$channeldir" -o ! -x "$channeldir" -o ! -r "$channeldir" -o ! -w "$channeldir"
  27 then echo "$channeldir is not read/write/executable directory, aborting!"
  28 exit 2
  29 fi
  30
  31 cd "$channeldir"
  32 echo working in channel $channeldir
  33 speed=`configread $CHANNELCONFIG WPM`
  34 speed=${speed:-12}
  35 echo at speed $speed Words/min
  36
  37 # handler for aborting
  38 finish () {
  39  echo "received abort signal, stopping all subprocesses"
  40 # if no PID is set, use 1 (init) as a dummy argument
  41  /bin/kill -TERM ${pidassembler:-1} $pidchannelchief
  42  echo ending main control loop
  43  date +"at %c"
  44  AMBROSABORT=1
  45 }
  46 AMBROSABORT=0
  47
  48 trap finish INT TERM STOP
  49
  50 echo entering main control loop with PID $$ at
  51 date +"at %c"
  52
  53 while test $AMBROSABORT -eq 0
  54 do : # main control loop
  55
  56 # poll&process sources with `extractor`
  57 # start&control `assembler`
  58 # start&control `channelchief`
  59
  60 done
  61
  62 echo finished.
  63