added basic decoder

diff --git a/rf433rcv/pc/decode.pl b/rf433rcv/pc/decode.pl
new file mode 100755 (executable)
index 0000000..c5822e5
--- /dev/null
+++ b/rf433rcv/pc/decode.pl
@@ -0,0 +1,56 @@
+#!/usr/bin/perl
+use strict;
+my @data =  split /,/,<>;
+
+my @statistics;
+
+my $start = $data[0];
+my $current = $start;
+my @lengths;
+my $count=0;
+for my $input (@data)
+{
+  $count++;
+  if ($input != $current)
+  {
+    push @lengths,[$current,$count];
+    $statistics[$current]{$count}++;
+    $count=0;
+    $current=$input;
+  }
+}
+
+for my $i (0..1)
+{
+  print "$i:\n";
+  my $stat = $statistics[$i];
+  for my $key (sort {$a <=> $b} keys %$stat)
+  {
+    print "$key $stat->{$key}\n";
+  }
+}
+my $seq;
+if (my $delemiter = $ARGV[0])
+{
+  print "Starting decoding: $delemiter\n";
+  my ($state,$time)=split /,/,$delemiter;
+  my $start = 0;
+  for my $data (@lengths)
+  {
+    if ($start)
+    {
+      print $data->[0] . " => " . $data->[1] ."\n";
+      $seq.= ($data->[0].',') x $data->[1];
+    }
+    if ($data->[0]==$state && $data->[1]==$time)
+    {
+      if ($start)
+      { last;
+      } else {
+        $start =1;
+      }
+    }
+  }
+  chop $seq;
+  print STDERR "$seq\n";
+}