git.rot13.org Git - vaillant-thermostat/blob - serial.pl

   1 #!/usr/bin/perl
   2 use warnings;
   3 use strict;
   4 use Device::SerialPort;
   5 use Data::Dump qw(dump);
   6 use Time::HiRes qw(time);
   7
   8 my $read_len = 255;
   9
  10 my $path = shift @ARGV || '/dev/serial/by-path/platform-20980000.usb-usb-0:1.2:1.0-port0';
  11
  12 $|=1;
  13
  14 connect_again:
  15
  16 my $s = new Device::SerialPort( $path ) || die $!;
  17 $s->baudrate(2400);
  18 $s->databits(8); # 7
  19 $s->parity('none');
  20 $s->stopbits(1);
  21 $s->handshake('none');
  22 $s->read_char_time(2);
  23 $s->read_const_time(3);
  24
  25 #$s->write('o');
  26
  27 my $t = time();
  28
  29 my $sym;
  30
  31 sub _mqtt_pub {
  32         my ( $t, $m ) = @_;
  33         my $cmd = "mosquitto_pub -h rpi2 -t '$t' -m '$m'";
  34         #warn "# _mqtt_pub [$t] = [$m]\n";
  35         #warn "## $cmd";
  36         system $cmd;
  37 }
  38
  39 while (1) {
  40         my ($len, $string) = $s->read($read_len);
  41         goto connect_again if ! defined $len;
  42         my $ts = time();
  43
  44         if ( $len > 0 ) {
  45                 my $hex = unpack('H*',$string);
  46                 $hex =~ s/(..)/$1 /g;
  47
  48                 my $temp = `curl --silent localhost:3000/temp.txt`;
  49                 $temp =~ s/\s+/ /gs;
  50                 $temp =~ s/^\s+//;
  51
  52                 #printf "%s %2d  %s\n", time(), $len, $hex;
  53                 printf "%8.4f %6.2f %2d  %s | %s\n", $ts, $ts - $t, $len, $hex, $temp;
  54                 $t = time();
  55
  56                 if ( $hex =~ m/^.+aa fc 39 aa (.+)/ ) {
  57                         my @l = split(/\s+/,$1);
  58                         my @d = (
  59                                 hex( $l[0] . $l[1] ),
  60                                 hex( $l[3] . $l[4] ),
  61                                 hex( $l[6] ),
  62                                 hex( $l[12] ),
  63                                 hex( $l[14] ), # * 300,
  64                                 hex( $l[15] ), # * 400,
  65                                 hex( $l[18] ),
  66                         );
  67
  68                         _mqtt_pub "stat/boiler/" . chr(ord('a') + $_) => $d[$_] foreach 0 .. $#d;
  69                 }
  70
  71                 my @v = split(/\s+/, $temp, 4);
  72                 my @n = qw( DS18B20/temperature DHT22/temperature DHT22/humidity DHT22/errors );
  73                    @n = qw( DS18B20/temperature DHT22/temperature DHT22/humidity DHT22/errors ) if $#v == 1; # no DS18B20
  74                 foreach (@v) {
  75                         _mqtt_pub "stat/boiler/" . shift(@n) => $_;
  76                 }
  77
  78         }
  79 }
  80
  81 $s->close;