update fix; etc. tag:V2 Updates

Took 1 hour 16 minutes

src/SensorHelper.ts

@@ -0,0 +1,45 @@
+import {IContainer} from "./database/IContainer";
+import {SensorType} from "./SensorType";
+import {HX711} from "./HX711";
+import debug from "debug";
+
+const log = debug("itender:sensor");
+
+export class SensorHelper {
+
+    /**
+     * Returns the current container weight
+     * @param container
+     */
+    static measure(container: IContainer): number | null {
+        if (container.sensorType == SensorType.LOADCELL) {
+            try {
+                // V2: Measure weight
+                let sensor = new HX711(container.sensorPin1, container.sensorPin2);
+
+                container.rawData = sensor.measure();
+            } catch (e) {
+                log("Sensor (Weight cell) of container " + container._id + " is broken or has malfunction - Removing it!");
+                container.sensorType = SensorType.NONE;
+                container.save();
+                return null;
+            }
+        } else if (container.sensorType == SensorType.ULTRASOUND) {
+            try {
+                // V2: Measure weight
+                let sensor = new HX711(container.sensorPin1, container.sensorPin2);
+
+                container.rawData = sensor.measure();
+
+            } catch (e) {
+                log("Sensor (Ultrasound) of container " + container._id + " is broken or has malfunction - Removing it!");
+                container.sensorType = SensorType.NONE;
+                container.save();
+                return null;
+            }
+        }
+
+        // todo Überprüfen ob hier Umrechnungen nötig sind. Soll in Gramm zurück gegeben werden
+        return container.rawData;
+    }
+}