die on checksum error

systemd service will restart us

diff --git a/mh-z19b.pl b/mh-z19b.pl
index 084bffa..968f315 100755 (executable)
--- a/mh-z19b.pl
+++ b/mh-z19b.pl
@@ -45,6 +45,8 @@ while (1) {
                        my $influx = "mh-z19b,dc=trnjanska co2=$co2 $t";
                        print "$influx\n";
                        system "curl --silent -XPOST '$influx_url' --data-binary '$influx'"
+               } else {
+                       die "checksum error";
                }
                sleep 1;
                $s->write("\xFF\x01\x86\x00\x00\x00\x00\x00\x79");