turn debug on with: touch /dev/shm/air-debug

[air-quality] / mh-z19b.pl

diff --git a/mh-z19b.pl b/mh-z19b.pl
index 9076414..927951b 100755 (executable)
--- a/mh-z19b.pl
+++ b/mh-z19b.pl
@@ -43,7 +43,7 @@ while (1) {
                my $co2 = $v[2] * 255 + $v[3];
                if ( $v[0] == 0xff && $sum == $checksum ) {
                        my $influx = "mh-z19b,dc=trnjanska co2=$co2 $t";
-                       print "$influx\n";
+                       print "$influx\n" if -e '/dev/shm/air-debug';
                        system "curl --max-time 2 --silent -XPOST '$influx_url' --data-binary '$influx'";
                        system "mosquitto_pub -h rpi2 -t 'air/mh-z19b/co2' -m $co2";
                } else {