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package Relais; |
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|
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# $Id$ |
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# $Log$ |
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|
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|
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use strict; |
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use warnings; |
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|
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use Device::SerialPort qw( :PARAM :STAT ); |
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use Time::HiRes qw( usleep ualarm gettimeofday tv_interval ); |
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use Data::Dumper; |
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|
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# export Relais-API commands |
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use Exporter; |
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our @ISA = qw( Exporter ); |
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our @EXPORT_OK = qw( |
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sendCommand |
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shutdownPort |
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getPortCount |
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togglePort |
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disableAllPorts |
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getDeviceState |
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); |
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|
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|
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# ---------------------------- configure here -------- |
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|
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# serial port |
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my $cfg_SeriellerPort = '/dev/ttyS0'; |
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|
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# device-address (modify for cascaded devices) |
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my $cfg_RelaisAddress = 0; |
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|
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# turn debugging on (1) or off (0) |
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my $debug = 0; |
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|
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# device has X ports |
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my $portcount = 8; |
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|
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# ---------------------------- configure here -------- |
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|
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|
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# Konfiguration |
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|
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# Ausgabe auf der Konsole |
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#$cfg_AusgabeZiel = 'STDOUT'; |
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# Ausgabe in eine Datei |
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my $cfg_AusgabeZiel = '/usr/local/httpd/htdocs/axquarium/iksdata.htm'; |
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|
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|
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|
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# port-state in application |
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my $portstate = {}; |
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|
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# current/last response from device |
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my $response; |
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my $response_data; |
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|
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my $PortName = $cfg_SeriellerPort; |
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my $quiet = 0; |
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|
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my $PortObj = new Device::SerialPort ($PortName, $quiet) |
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|| die "Can't open $PortName: $^E\n"; # $quiet is |
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|
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# configuring |
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|
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#$PortObj->user_msg($Device::SerialPort::ON); |
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$PortObj->baudrate(19200); |
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$PortObj->databits(8); |
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$PortObj->parity("none"); |
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$PortObj->stopbits(1); |
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$PortObj->handshake("none"); |
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|
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$PortObj->write_settings || undef $PortObj; |
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|
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# $PortObj->save($Configuration_File_Name); |
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# $PortObj->baudrate(300); |
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# $PortObj->restart($Configuration_File_Name); # back to 9600 baud |
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|
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|
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# operating |
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|
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# command-table initialisieren |
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my $commands = { |
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'NOP' => { |
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cmd => 0, |
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}, |
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'SETUP' => { |
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cmd => 1, |
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}, |
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'GET PORT' => { cmd => 2 }, |
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'SET PORT' => { cmd => 3 }, |
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'GET OPTION' => { cmd => 4 }, |
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'SET OPTION' => { cmd => 5 }, |
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}; |
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|
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|
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# Kommunikations-Hilfsfunktionen |
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# lowlevel-send |
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sub sendRequest { |
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my $frame = shift; |
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#print "writing: $frame", "\n"; |
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$PortObj->write($frame); |
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$PortObj->write_done(0); |
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#sleep 1; |
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|
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# sleep for 1/3 second |
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usleep 100 * 1000; # milliseconds? |
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} |
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|
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# lowlevel-recieve |
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sub recieveResponse { |
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my $frame = shift; |
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my $frame_decoded = decodeFrame($frame); |
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|
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# debugging |
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my $decoded_dump = join(' - ', @$frame_decoded); |
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print "frame-rcvd: $decoded_dump", "\n" if $debug; |
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|
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$response = $frame_decoded; |
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$response_data = $frame_decoded->[2]; |
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|
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return $frame_decoded; |
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} |
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|
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# lowlevel-frame: build |
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sub makeFrame { |
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my $cmd = shift; |
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my $data = shift; |
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my $addr = shift; |
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|
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$cmd ||= 0; |
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$addr ||= $cfg_RelaisAddress; |
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$data ||= 0; |
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my $parity = $cmd ^ $addr ^ $data; |
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print "frame-send: $cmd - $addr - $data - $parity", "\n" if $debug; |
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|
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my $frame = chr($cmd) . chr($addr) . chr($data) . chr($parity); |
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return $frame; |
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} |
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|
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sub decodeFrame { |
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my $frame = shift; |
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my @buffer; |
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for (my $i = 0; $i <= length($frame); $i++) { |
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push @buffer, ord(substr($frame, $i, 1)); |
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} |
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return \@buffer; |
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} |
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|
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# highlevel-command |
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sub sendCommand { |
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my $command = shift; |
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my $data = shift; |
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my $frame = makeFrame($commands->{$command}->{cmd}, $data); |
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sendRequest($frame); |
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|
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#sleep 1; |
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|
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# Daten vom seriellen Port abholen |
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my $data_in = $PortObj->input; |
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|
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# abschliessende newlines abtrennen |
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chomp($data_in); |
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|
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# Antwort weiterleiten |
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recieveResponse($data_in); |
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|
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# zwei sekunden warten |
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#sleep(2); |
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|
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#sleep 1; |
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|
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} |
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|
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sub enablePort { |
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my $port = shift; |
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print "enabling port: $port", "\n"; |
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$port -= 1; |
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$portstate->{$port} = 1; |
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writePortState(); |
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} |
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|
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sub disablePort { |
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my $port = shift; |
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print "disabling port: $port", "\n"; |
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$port -= 1; |
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$portstate->{$port} = 0; |
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writePortState(); |
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} |
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|
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sub portState { |
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my $port = shift; |
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$port -= 1; |
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return $portstate->{$port}; |
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} |
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|
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sub togglePort { |
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my $port = shift; |
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if (!portState($port)) { |
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enablePort($port); |
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} else { |
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disablePort($port); |
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} |
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} |
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|
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sub disableAllPorts { |
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for (1..$portcount) { |
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disablePort($_); |
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} |
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} |
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|
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sub writePortState { |
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my $port = shift; |
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my $bitmask = 0; |
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foreach my $port (keys %$portstate) { |
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if ($portstate->{$port}) { |
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$bitmask += 2 ** $port; |
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} |
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} |
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|
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sendCommand('SET PORT', $bitmask); |
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} |
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|
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sub readPortState { |
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sendCommand('GET PORT'); |
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#print Dumper($response); |
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|
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my $val = $response_data; |
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|
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#print "bitmask: $val", "\n"; |
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|
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my $rest; # = $val; |
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my $bitcount = 0; |
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while (1) { |
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$rest = $val % 2; |
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#print "bitmask: $val", "\n"; |
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#print "rest: ", $rest, "\n"; |
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$portstate->{$bitcount} = $rest; |
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|
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$val /= 2; |
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last if int($val) == 0; |
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$bitcount++; |
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} |
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|
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#$val = $val / 2; |
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#print "bitmask: $val", "\n"; |
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|
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} |
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|
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sub shutdownPort { |
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$PortObj->close || die "failed to close"; |
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undef $PortObj; |
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} |
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|
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sub getPortCount { |
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return $portcount; |
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} |
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|
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sub getDeviceState { |
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readPortState(); |
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my @ports = %$portstate; |
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#print Dumper($portstate); |
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#print Dumper(@ports); |
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my $ports; |
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for (1..$portcount) { |
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my $port = $_ - 1; |
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$ports->{$_} = $portstate->{$port}; |
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} |
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print Dumper($ports); |
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} |
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|
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