- fix re-connection after connection loss to broker

- add subscribe call after reconnect
  - additional config settings for timeout values
- add more info/warn outputs
- change default log level from "warn" to "info"

internal/PinControlService/Pin.go

@@ -55,7 +55,7 @@ func (p *Pin) State() PinState {
 }
 
 func (p *Pin) Command(cmd PinCommand) error {
-	log.Debugf("try to send command %s for pin %s (pin no: %d)", cmd, p.Name, p.Id)
+	log.Infof("send command \"%s\" for pin %s (pin no: %d)", cmd, p.Name, p.Id)
 	if p.Direction != Output {
 		return errors.New("pin is not an output")
 	}
@@ -75,9 +75,12 @@ func (p *Pin) Command(cmd PinCommand) error {
 
 func (p *Pin) Configure() {
 	if p.Direction == Input {
+		log.Infof("configuring pin %s (pin no: %d) as Input", p.Name, p.Id)
 		p.PinHandle.Input()
 	} else if p.Direction == Output {
+		log.Infof("configuring pin %s (pin no: %d) as Output", p.Name, p.Id)
 		p.PinHandle.Output()
+		log.Infof("set initial state \"%s\" for pin %s (pin no: %d)", p.InitialState, p.Name, p.Id)
 		_ = p.Command(p.InitialState)
 	}
 
@@ -94,5 +97,9 @@ func (p *Pin) Configure() {
 }
 
 func (p *Pin) Changed() bool {
-	return p.PinHandle.EdgeDetected()
+	ret := p.PinHandle.EdgeDetected()
+	if ret {
+		log.Infof("pin %s (pin no: %d) changed state", p.Name, p.Id)
+	}
+	return ret
 }