Add perldaq back in

src/perldaq/daq.pm

+package DAQ;
+use Exporter;
+@ISA = ('Exporter');
+
+use IO::Socket;
+
+%channels = ();
+$host = "";
+$port = 8088;
+
+
+# get the channel list from the server, store in %channels
+sub connect {
+my ($host, $port) = @_;
+
+if (! defined $host) {
+	$host = 'localhost';
+}
+if (! defined $port) {
+	$port = 8088;
+}
+$DAQ::host = $host;
+$DAQ::port = $port;
+
+$remote = IO::Socket::INET->new( Proto => "tcp", PeerAddr => $host, PeerPort => $port);
+unless ($remote) { die "cannot connect to daqd on $host:$port" }
+$remote->autoflush(1);
+
+# Get the channel list and store the values
+#
+
+print $remote "status channels 3;\n";
+$len = 0 + <$remote>;
+#print "$len channels configured\n";
+for my $i (1 .. $len) {
+	#print $i, "\n";
+	my $name = <$remote>;
+	my $rate = 0 + <$remote>;
+	my $type = 0 + <$remote>;
+	my $tpnum = 0 + <$remote>;
+	my $grpnum = 0 + <$remote>;
+	my $units = <$remote>;
+	my $gain = .0 + <$remote>;
+	my $slope = .0 + <$remote>;
+	my $offset = .0 + <$remote>;
+	chomp $name;
+	chomp $units;
+	$channels{$name} = {rate => $rate,
+				type => $type,
+				tpnum => $tpnum,
+				grpnum => $grpnum,
+				units => $units,
+				gain => $gain,
+				slope => $slope,
+				offset => $offset};
+	#print $channels{$name};
+} 
+close $remote;
+return 0;
+}
+
+# print the while channel list or just a single channel, given an argument (channel name)
+sub print_channel {
+my ($cn) = @_;
+
+if (!defined $cn) {
+for my $chname (keys %channels) {
+	print $chname, "\n";
+	for (keys %{$channels{$chname}}) {
+		print $_, "=", ${$channels{$chname}}{$_}, "\n";
+	}
+}
+} else {
+	print $cn, "\n";
+	for (keys %{$channels{$cn}}) {
+		print $_, "=", ${$channels{$cn}}{$_}, "\n";
+	}
+}
+}
+
+# get current time
+sub gps {
+my $remote = IO::Socket::INET->new( Proto => "tcp", PeerAddr => $DAQ::host, PeerPort => $DAQ::port);
+unless ($remote) { die "cannot connect to daqd on $DAQ::host:$DAQ::port" }
+$remote->autoflush(1);
+my $gps = 0;
+
+# This loop here is to fix a frame builder bug
+# sometimes "gps" commands returns strange number (0 or a number much less than the current GPS time)
+# TODO: need to fix this in the frame builder
+do {
+print $remote "gps;\n";
+read($remote, $resp, 24);
+read($remote, $gps, 4);
+$gps = unpack( 'N', $gps );
+#print "gps=$gps\n";
+} while ($gps <= 986074331);
+close $remote;
+return $gps;
+}
+
+# get data starting at (optional) $gps for $req_seconds (default 1 second)
+# for the channel $chname
+sub acquire {
+my ($chname, $req_seconds, $gps, $dtype) = @_;
+$dtype ||= "f";
+die "Need to connect first\n" unless defined $remote;
+die "Unspecified channel name\n" unless defined $chname;
+die "Bad channel name\n" unless defined $channels{$chname};
+$req_seconds = 1 if ! defined $req_seconds;
+
+#print "Acquiring $chname for $req_seconds from $gps\n";
+my $remote = IO::Socket::INET->new( Proto => "tcp", PeerAddr => $DAQ::host, PeerPort => $DAQ::port);
+unless ($remote) { die "cannot connect to daqd on $DAQ::host:$DAQ::port" }
+$remote->autoflush(1);
+
+if (defined $gps && $gps > 0) {
+	print $remote "start net-writer $gps $req_seconds {\"$chname\"};\n";
+} else {
+	print $remote "start net-writer {\"$chname\"};\n";
+}
+#while ( <$remote> ) { print }
+#close $remote;
+
+#read($remote, $length. 4);
+#read($new_sock, $data, $length);
+
+
+# Initial responses "0000"
+read($remote, $resp, 4);
+#print $resp. "\n\n";
+read($remote, $resp, 4);
+#print $resp. "\n";
+read($remote, $resp, 4);
+#print $resp. "\n\n";
+
+my $len = 0;
+read($remote, $len, 4);
+$len = unpack( 'N', $len );
+#if ($len) { 
+#print "Getting offline data\n";
+#} else {
+#print "received 0 response (online data)\n";
+#}
+
+my $accum_seconds = 0;
+
+undef @result_array;
+while(read($remote, $len, 4)) {
+
+  $len = unpack( 'N', $len );
+  #print "$len\n";
+  read($remote, $seconds, 4);
+  $seconds = unpack( 'N', $seconds );
+  read($remote, $gps, 4);
+  $gps = unpack( 'N', $gps );
+  read($remote, $gps_n, 4);
+  $gps_n = unpack( 'N', $gps_n );
+  read($remote, $seq, 4);
+  $seq = unpack( 'N', $seq );
+  $len -= 16;
+  read($remote, $data, $len);
+  if ($gps == 0xffffffff) {
+	#reconfig block
+  } else {
+  	#print "gps=$gps; seconds=$seconds; gps_n=$gps_n; seq=$seq\n";
+  	#print "data length=$len\n";
+	@data_array = unpack( '(a4)*', $data );
+	my $as = @data_array;
+	#print $as, "\n";
+	for (@data_array) { $_ = unpack $dtype, reverse; }
+	#for (@data_array) { printf "%.1f ", $_; }
+	#print "\n";
+	push (@result_array, @data_array);
+	$accum_seconds += $seconds;
+	if ($accum_seconds >= $req_seconds) {last};
+  }
+}
+close $remote;
+return @result_array;
+}
+
+return 1;

src/perldaq/test.pl

+#!/usr/bin/perl -w -I.
+
+# This script claculates an average of $mychan starting 5 seconds ago up till now
+
+require "daq.pm";
+
+#$mychan = "G1:ACO-TCE_SEIS_FF_X_OUT";
+#$mychan = "G1:GCO-FILTERSB1POS_OUT";
+#$mychan = "G1:GCO-AFTERMAT1X_IN1_DAQ";
+#$mychan = "G1:GCO-DELAYDDMOD1R_OUT_DAQ";
+$mychan = "H1:FE3-TIM32_T1_ADC_FILTER_5_OUT_DQ";
+# get the channel list
+DAQ::connect("x1nds0", 8088);
+#DAQ::print_channel();
+#DAQ::print_channel("C1:SUS-ETMY_OPLEV_SUM");
+
+# get current time
+$gps = DAQ::gps();
+
+#$gps -= 300;
+
+@data = DAQ::acquire($mychan, 3, 0, 'L');
+
+# calculate average on the data and print
+$avg = 0.0;
+$min = 0xffffffff + 0.0;
+$max = -0xffffffff + 0.0;
+$cnt = 0;
+for (@data) {
+	$cnt++;
+	printf "%.1f ", $_;
+	$avg += $_;
+	if ($_ < $min) { $min = $_; }
+	if ($_ > $max) { $max = $_; }
+}
+$avg /= $cnt;
+printf "at gps=$gps $mychan averaged %.5f for 3 seconds; min=%.5f; max=%.5f\n", $avg, $min, $max;