fix(pkg/config): use storage endpoints

changes:
- Only one storage endpoint can be defined. This consists of a URL which
  can be used to specify whether the data is to be stored in a file or
  in a database.

pkg/sensor/bme280.go

@@ -94,7 +94,7 @@ func (s *BME280) Read() ([]*types.MeasuredValue, error) {
 
 // ReadChannel reads the measured values from the sensor and writes them to a
 // channel.
-func (s *BME280) ReadChannel(measuredValuesChannel chan<- []*types.MeasuredValue, errorChannel chan<- error, wg *sync.WaitGroup) {
+func (s *BME280) ReadChannel(measuredValueChannel chan<- *types.MeasuredValue, errorChannel chan<- error, wg *sync.WaitGroup) {
 	if wg != nil {
 		defer wg.Done()
 	}
@@ -105,20 +105,22 @@ func (s *BME280) ReadChannel(measuredValuesChannel chan<- []*types.MeasuredValue
 		return
 	}
 
-	measuredValuesChannel <- measuredValues
+	for _, measuredValue := range measuredValues {
+		measuredValueChannel <- measuredValue
+	}
 
 }
 
 // ReadContinously reads the measured values continously from the sensor and
 // writes them to a channel.
-func (s *BME280) ReadContinously(ctx context.Context, measuredValuesChannel chan<- []*types.MeasuredValue, errorChannel chan<- error) {
+func (s *BME280) ReadContinously(ctx context.Context, measuredValueChannel chan<- *types.MeasuredValue, errorChannel chan<- error) {
 	for {
 		select {
 		case <-ctx.Done():
 			errorChannel <- fmt.Errorf("%v: Context closed: %v", s.SensorName, ctx.Err())
 			return
 		default:
-			s.ReadChannel(measuredValuesChannel, errorChannel, nil)
+			s.ReadChannel(measuredValueChannel, errorChannel, nil)
 		}
 	}
 }