git.rot13.org Git - air-quality/blob - iio2mqtt.pl

   1 #!/usr/bin/perl
   2 use warnings;
   3 use strict;
   4
   5 use Time::HiRes;
   6
   7 # sudo apt install libiio-utils mosquitto-clients
   8
   9 my $influx_url = shift @ARGV || 'http://10.13.37.92:8086/write?consistency=any&db=rot13';
  10
  11 my $hostname = `hostname -s`;
  12 chomp($hostname);
  13
  14 while(1) {
  15
  16         my $t = Time::HiRes::time;
  17         my $t_influx = int( $t * 1_000_000_000 );
  18
  19         my $iio = `iio_info`;
  20
  21         my $device;
  22         my $name;
  23
  24         my $influx = '';
  25
  26         foreach ( split(/\n/, $iio) ) {
  27                 if ( m/iio:device\d+:\s+(\S+)/ ) {
  28                         $device = $1;
  29
  30                         if ( $influx =~ m/,$/ ) {
  31                                 $influx =~ s/,$/ $t_influx\n/;
  32                         }
  33                         $influx .= "iio,dc=trnjanska,host=$hostname,device=$device ";
  34
  35                 } elsif ( m/(\S+):\s+\(input\)/ ) {
  36                         $name = $1;
  37                 } elsif ( m/attr\s+0:\s+input\svalue: (\d+[\.\d]+)/ ) {
  38                         my $val = $1;
  39                         if ( $val !~ m/\d+\.\d+/ ) {
  40                                 $val = $val / 1000;
  41                         }
  42                         my $topic = "iio/$hostname/$device/$name";
  43                         #print "$topic $val\n";
  44                         system "mosquitto_pub -h rpi2 -t $topic -m $val";
  45
  46                         $influx .= "$name=$val,";
  47                 } else {
  48                         #warn "# $_\n";
  49                 }
  50         }
  51
  52         $influx =~ s/,$/ $t_influx/;
  53         system "curl --silent -XPOST '$influx_url' --data-binary '$influx'";
  54         warn "$influx\n";
  55
  56         sleep Time::HiRes::time + 1 - $t;
  57 }