new backend files added: main created and plantdatabase files from Makeathon extracted

software/backend/dev_test_examples/mqtt_publisher.py

@@ -0,0 +1,16 @@
+
+import paho.mqtt.client as mqtt
+from random import randrange, uniform
+import time
+
+mqttBroker ="mqtt.eclipseprojects.io"
+
+client = mqtt.Client("Temperature_Inside")
+client.connect(mqttBroker)
+
+while True:
+    randNumber = uniform(20.0, 21.0)
+    client.publish("planttest", randNumber)
+    print("Just published " + str(randNumber) + " to topic TEMPERATURE")
+    time.sleep(0.5)
+

software/backend/dev_test_examples/mqtt_subscriber.py

@@ -0,0 +1,18 @@
+import paho.mqtt.client as mqtt
+import time
+
+def on_message(client, userdata, message):
+    print("received message: " ,str(message.payload.decode("utf-8")))
+
+mqttBroker ="mqtt.eclipseprojects.io"
+
+client = mqtt.Client("Smartphone")
+client.connect(mqttBroker)
+
+client.loop_start()
+
+client.subscribe("TEMPERATURE")
+client.on_message=on_message
+
+time.sleep(30)
+client.loop_stop()