Push plug state to MQTT

* all events are pushed to /service/plug/$plugname
* plug state is sent as retained status message

fhem-appendix.cfg

@@ -1,4 +1,4 @@
-define jeelink JeeLink /dev/ttyUSB0@57600
+define jeelink JeeLink /dev/rfm12b-nano@57600
 
 define PCA301_0FA4E4 PCA301 0FA4E4 01
 attr PCA301_0FA4E4 alias drucker
@@ -59,3 +59,19 @@ attr PCA301_05540D webCmd on:off:toggle:statusRequest
 define FileLog_PCA301_05540D FileLog ./log/PCA301_05540D-%Y.log PCA301_05540D
 attr FileLog_PCA301_05540D logtype text
 attr FileLog_PCA301_05540D room PCA301
+
+# MQTT push
+define mqttPush notify PCA301.* {\
+    my $alias = $attr{$NAME}{'alias'};;\
+    my ($evname, $val) = split(':', $EVENT);;\
+    my $retain = '';;\
+\
+    if ($evname eq 'off' || $evname eq 'on') {\
+        $val = $evname;;\
+        $evname = 'state';;\
+        $retain = '-r';;\
+    }\
+\
+    system("mosquitto_pub $retain -t /service/plug/$alias/$evname -m $val");;\
+    return 0;;\
+}