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|
#!/usr/bin/perl
use warnings;
use strict;
use English;
use POSIX;
use Device::SerialPort;
use Net::MQTT::Simple;
# config
my $delay = 1;
my $verbose = 1;
my @paths = (
"unused",
"unused",
"unused",
"temperature/elv/1",
"temperature/elv/2",
"temperature/elv/3",
"temperature/elv/4",
"temperature/elv/5",
"temperature/elv/6",
"temperature/elv/7",
"temperature/elv/8",
"humidity/elv/1",
"humidity/elv/2",
"humidity/elv/3",
"humidity/elv/4",
"humidity/elv/5",
"humidity/elv/6",
"humidity/elv/7",
"humidity/elv/8",
"temperature/elv/0",
"humidity/elv/0",
"wind/elv/0",
"rain/elv/0",
"is-raining/elv/0",
"unused"
);
######################################################################
# vars
my $host = shift;
my $base = shift;
my $port = shift;
my ($elv,$mqtt,$line,@data,@prev,$updates,$topic,$value);
# handle args
my @devs = glob("/dev/serial/by-id/usb-*ELV_USB-WDE1*");
$base = "sensors" unless defined($base);
$port = shift @devs unless defined($port);
if (!defined($host)) {
print "usage: $0 <mqtt-server> [ <topic-prefix> [ <serial-port> ] ]\n";
print "default for topic-prefix: $base\n";
print "default for serial-port : $port\n";
exit 1;
}
# init serial port
$elv = new Device::SerialPort($port, 1) or die "open serial port ($port): $!";
$elv->baudrate(9600);
$elv->parity('none');
$elv->databits(8);
$elv->stopbits(1);
$elv->write_settings();
# init mqtt
$mqtt = Net::MQTT::Simple->new($host) or die "mqtt init (server $host)";
# detect and init elv reader
$elv->write("?");
sleep $delay;
$line = $elv->input;
die "ELV USB-WDE1 not detected on $port" unless $line =~ m/ELV USB-WDE1/;
$elv->write("M2");
sleep $delay;
$line = $elv->input;
die "switch to logview mode failed" unless $line =~ m/LogView/;
$elv->write("RESET");
sleep $delay;
$line = $elv->input;
die "reset failed (#1)" unless $line =~ m/OK/;
$elv->write("?");
sleep $delay;
$line = $elv->input;
die "reset failed (#2)" unless $line =~ m/ELV USB-WDE1/;
print "init ok, waiting for data ...\n" if $verbose;
# polling loop
$OUTPUT_AUTOFLUSH = 1;
while (1) {
# read data
sleep $delay;
if (!defined($elv->status)) {
die "serial line dead";
}
$line = $elv->input;
next if $line eq "";
@data = split /;/, $line;
if (scalar(@data) != scalar(@paths)) {
sleep $delay;
$line .= $elv->input;
@data = split /;/, $line;
}
if (scalar(@data) != scalar(@paths)) {
printf "data error (%d != %d), fixup failed\n", scalar(@data), scalar(@paths);
next;
}
# ping mqtt
$mqtt->tick( 1 );
$updates = 0;
for my $i (0 .. (scalar(@paths) - 1)) {
next if $paths[$i] eq "unused";
# update mqtt
$topic = $base . "/" . $paths[$i];
$value = $data[$i];
$value =~ s/,/./; # de -> us float format
$mqtt->retain( $topic => $value );
# log changes
if ((!defined($prev[$i]) || $data[$i] ne $prev[$i]) && $verbose) {
$updates++;
if ($updates == 1) {
print strftime("\n[%H:%M:%S]\n",
localtime());
}
printf " %-32s:%8s\n", $topic, $value;
}
}
@prev = @data;
}
|
