read serial port values and emit them to mqtt

[air-quality] / dsm501.pl

diff --git a/dsm501.pl b/dsm501.pl
new file mode 100755 (executable)
index 0000000..41578a5
--- /dev/null
+++ b/dsm501.pl
@@ -0,0 +1,44 @@
+#!/usr/bin/perl
+use warnings;
+use strict;
+# sudo apt install libdevice-serialport-perl libdata-dump-perl
+use Device::SerialPort;
+use Time::HiRes;
+use Data::Dump qw(dump);
+
+my $port = shift @ARGV || '/dev/ttyUSB2';
+my $influx_url = shift @ARGV || 'http://10.13.37.229:8186/write?db=telegraf';
+$influx_url = 'http://10.13.37.92:8086/write?db=rot13';
+
+my $s = new Device::SerialPort( $port ) || die $!;
+$s->baudrate(115200);
+$s->databits(8);
+$s->parity('none');
+$s->stopbits(1);
+$s->handshake('none');
+$s->read_char_time(5);
+$s->read_const_time(10);
+
+
+while (1) {
+
+       my ($len, $string) = $s->read(128);
+       my $t = int( Time::HiRes::time() * 1_000_000_000 );
+       die $! if ! defined($len);
+       if ( $len > 0 ) {
+               warn "# len=$len ",dump($string);
+               if ( $string !~ m/^#/ ) {
+                       $string =~ s/[\r\n]+$//;
+                       $string =~ s/\s/,/g;
+                       my $influx = "dsm501,dc=trnjanska $string $t";
+                       print "$influx\n";
+                       system "curl --silent -XPOST '$influx_url' --data-binary '$influx'"
+               } else {
+                       warn "SKIP: $string\n";
+               }
+       }
+
+};
+
+
+$s->close;