--- 3m-810.pl	2009/04/01 16:59:09	26
+++ 3m-810.pl	2009/04/06 13:18:55	30
@@ -7,6 +7,7 @@
 use Data::Dump qw/dump/;
 use Carp qw/confess/;
 use Getopt::Long;
+use File::Slurp;
 
 use IO::Socket::INET;
 
@@ -18,8 +19,11 @@
 	push @a, scalar localtime() if $a[0] =~ m{^info};
 
 	if ( ! defined $meteor_fh ) {
-		$meteor_fh = IO::Socket::INET->new( $meteor_server )
-			|| warn "can't connect to meteor $meteor_server: $!"; # FIXME warn => die for production
+		warn "# open connection to $meteor_server";
+		$meteor_fh = IO::Socket::INET->new(
+				PeerAddr => $meteor_server,
+				Timeout => 1,
+		) || warn "can't connect to meteor $meteor_server: $!"; # FIXME warn => die for production
 		$meteor_fh = 0; # don't try again
 	}
 
@@ -36,6 +40,8 @@
 my $stopbits  = "1";
 my $handshake = "none";
 
+my $program_path = './program/';
+
 my $response = {
 	'd500090400110a0500027250'				=> 'version?',
 	'd60007fe00000500c97b'					=> 'no tag in range',
@@ -179,6 +185,11 @@
 			warn "## using cached data for $tag" if $debug;
 		}
 		delete $last_visible_tags->{$tag}; # leave just missing tags
+
+		if ( -e "$program_path/$tag" ) {
+				meteor( 'write', $tag );
+				write_tag( $tag );
+		}
 	}
 
 	foreach my $tag ( keys %$last_visible_tags ) {
@@ -190,6 +201,29 @@
 	warn "## update_visible_tags(",dump( @tags ),") = ",dump( $visible_tags )," removed: ",dump( $last_visible_tags ), " data: ",dump( $tags_data ) if $debug;
 }
 
+my $tag_data_block;
+
+sub read_tag_data {
+	my ($start_block,$rest) = @_;
+	die "no rest?" unless $rest;
+	warn "## DATA [$start_block] ", dump( $rest ) if $debug;
+	my $tag = uc(unpack('H16',substr( $rest, 0, 8 )));
+	my $blocks = ord(substr($rest,8,1));
+	$rest = substr($rest,9); # leave just data blocks
+	foreach my $nr ( 0 .. $blocks - 1 ) {
+		my $block = substr( $rest, $nr * 6, 6 );
+		warn "## block ",as_hex( $block ) if $debug;
+		my $ord   = unpack('v',substr( $block, 0, 2 ));
+		my $expected_ord = $nr + $start_block;
+		die "got block $ord, expected block $expected_ord from ",dump( $block ) if $ord != $expected_ord;
+		my $data  = substr( $block, 2 );
+		die "data payload should be 4 bytes" if length($data) != 4;
+		warn sprintf "## tag %9s %02d %s |%-4s|\n", $tag, $ord, as_hex( $data ), $data;
+		$tag_data_block->{$tag}->[ $ord ] = $data;
+	}
+	$tags_data->{ $tag } = join('', @{ $tag_data_block->{$tag} });
+	print "DATA $tag ",dump( $tags_data ), "\n";
+}
 
 sub read_tag {
 	my ( $tag ) = @_;
@@ -199,42 +233,49 @@
 	print "read_tag $tag\n";
 
 	cmd(
-		"D6 00  0D  02      $tag   00   03     1CC4", 'read $tag offset: 0 blocks: 3',
+		"D6 00  0D  02      $tag   00   03     1CC4", "read $tag offset: 0 blocks: 3",
 		"D6 00  0F  FE  00 00  05 01   $tag    941A", sub {
 			print "FIXME: tag $tag ready?\n";
 		},
 		"D6 00  1F  02 00", sub { # $tag  03   00 00   04 11 00 01   01 00   31 32 33 34   02 00   35 36 37 38    531F\n";
-			my $rest = shift || die "no rest?";
-			warn "## DATA ", dump( $rest ) if $debug;
-			my $tag = uc(unpack('H16',substr( $rest, 0, 8 )));
-			my $blocks = ord(substr($rest,8,1));
-			$rest = substr($rest,9); # leave just data blocks
-			my @data;
-			foreach my $nr ( 0 .. $blocks - 1 ) {
-				my $block = substr( $rest, $nr * 6, 6 );
-				warn "## block ",as_hex( $block ) if $debug;
-				my $ord   = unpack('v',substr( $block, 0, 2 ));
-				die "got block $ord, expected block $nr from ",dump( $block ) if $ord != $nr;
-				my $data  = substr( $block, 2 );
-				die "data payload should be 4 bytes" if length($data) != 4;
-				warn sprintf "## tag %08s %02d %s |%-4s|\n", $tag, $ord, as_hex( $data ), $data;
-				$data[ $ord ] = $data;
-			}
-			$tags_data->{ $tag } = join('', @data);
-			print "DATA $tag ",dump( $tags_data ), "\n";
+			read_tag_data( 0, @_ );
+		},
+	);
+
+	cmd(
+		"D6 00  0D  02      $tag   03   04     3970", "read $tag offset: 3 blocks: 4",
+		"D6 00  25  02 00", sub { # $tag   04                         03 00   30 30 00 00   04 00   00 00 00 00   
+			read_tag_data( 3, @_ );
 		}
 	);
 
-	#        D6 00  1F  02 00   $tag   03   00 00   04 11 00 01   01 00   30 30 30 30   02 00   30 30 30 30    E5F4
-if (0) {
-	cmd(    "D6 00  0D  02      $tag   03   04     3970", 'read offset: 3 blocks: 4' );
-
-	#        D6 00  25  02 00   $tag   04                         03 00   30 30 00 00   04 00   00 00 00 00   
-	#                           $tag                              05 00   00 00 00 00   06 00   00 00 00 00    B9BA
-	warn "?? D6 00  25  02 00   $tag   04                         03 00   39 30 31 32   04 00   ....\n";
 }
-	warn "?? D6 00  0F  FE  00 00  05 01   $tag  941A ##### ready?\n";
 
+sub write_tag {
+	my ($tag) = @_;
+
+	my $path = "$program_path/$tag";
+
+	my $data = read_file( $path );
+
+	$data = substr($data,0,16);
+
+	my $hex_data = unpack('H*', $data) . ' 00' x ( 16 - length($data) );
+
+	print "write_tag $tag = $data ",dump( $hex_data );
+
+	cmd(
+		"D6 00  26  04  $tag  00 06 00  04 11 00 01  $hex_data 00 00 00 00  FD3B", "write $tag",
+		"D6 00  0D  04 00  $tag  06  AFB1", sub { assert() },
+	) foreach ( 1 .. 3 ); # XXX 3M software does this three times!
+
+	my $to = $path;
+	$to .= '.' . time();
+
+	rename $path, $to;
+	print ">> $to\n";
+
+	delete $tags_data->{$tag};	# force re-read of tag
 }
 
 exit;
@@ -288,6 +329,7 @@
 	my $data = '';
 	while ( length( $data ) < $len ) {
 		my ( $c, $b ) = $port->read(1);
+		die "no bytes on port: $!" unless defined $b;
 		#warn "## got $c bytes: ", as_hex($b), "\n";
 		$data .= $b;
 	}