hostside/reprogram

   1 #!/bin/bash
   2
   3 set -e
   4
   5 fail () { echo >&2 "$0: error: $*"; exit 1; }
   6
   7 if [ $# != 2 ]; then cat >&2 <<END; exit 1; fi
   8  usage:
   9   ./reprogram /dev/ttyS0 LOCO|FILENAME
  10   where LOCO means ./LOCO.cv-s
  11   and FILENAME must contain a slash
  12 END
  13
  14 port="$1"; shift
  15 filename="$1"; shift
  16
  17 case "$filename" in
  18 */*)    ;;
  19 *)      filename="$filename.cv-s";;
  20 esac
  21 exec <"$filename"
  22
  23 while read cv value; do
  24         case "$cv" in
  25         addr)
  26                 [ x$addr = x ] || fail 'addr twice'
  27                 addr=$(( $value + 0 ))
  28                 ;;
  29         [0-9]*)
  30                 cv=$(( $cv + 0 ))
  31                 value=$(( $value + 0 ))
  32                 cvlist="$cvlist $cv=$value"
  33                 ;;
  34         '#'*)
  35                 ;;
  36         *)
  37                 fail 'invalid syntax'
  38                 ;;
  39         esac
  40 done
  41
  42 echo "Factory reset"
  43 ./factory-reset-svc "$port"
  44
  45 echo "Setting address to $addr"
  46 ./program-cv-svc "$port" 1 $addr
  47
  48 for cvv in $cvlist; do
  49         sleep 1
  50         cv=${cvv%=*}
  51         value=${cvv#*=}
  52         echo "Setting CV $cv = $value"
  53         ./program-cv "$port" $addr $cv $value
  54 done