Added emon example

emoncms.py

@@ -0,0 +1,89 @@
+#!/usr/bin/env python2.7
+
+import rfm69
+import sensors
+from sensors import rawsensor
+import time
+import requests
+import json
+
+
+URL = 'https://emoncms.org/input/post.json'
+APIKEY = '12345678901234567890'
+
+sensors = [
+	{
+		"sensorId": 'b8', #ID of the sensor
+		"minInterval": 30, #if new value received before <minInterval> in seconds, value is discarded
+		"node": 1 #node number in emoncms
+	},
+	{
+		"sensorId": 'e4',
+		"minInterval": 30,
+		"node": 2
+	},
+	{
+		"sensorId": 'ec',
+		"minInterval": 30,
+		"node": 3
+	},
+  {
+		"sensorId": '68',
+		"minInterval": 30,
+		"node": 4
+	},
+  {
+		"sensorId": '4',
+		"minInterval": 30,
+		"node": 5
+	},
+  {
+		"sensorId": '78',
+		"minInterval": 30,
+		"node": 6
+	}	
+]
+
+lasttimes = {}
+
+def LogSensor(data):
+    for s in sensors: #search for received sensor in list
+        if s['sensorId'] == data['ID']:
+            if data['ID'] in lasttimes:
+                if time.time() - lasttimes[data['ID']] < s['minInterval']:
+                    print "discarded value"
+                    return
+            lasttimes[data['ID']] = time.time() 
+
+            values = {}
+            values['T'] = data['T'][0]
+            if 'RH' in data:
+                values['RH'] = data['RH'][0]
+
+            payload = {'apikey': APIKEY, 'node': s['node'], 'json': json.dumps(values)}
+            r = requests.get(URL, params = payload)
+            print "Sending to emon:", payload, "Result:", r
+            return
+    print "No match for ID"
+
+rfm = rfm69.Rfm69()
+
+rfm.SetParams(
+    Freq = 868.300, #MHz center frequency
+    Datarate = 9.579, #17.241, #kbit/s baudrate
+    Deviation = 30, #30 kHz
+    ModulationType = rfm69.FSK, #modulation
+    SyncPattern = [0x2d, 0xd4], #syncword
+    Bandwidth = 100, #kHz bandwidth
+    AfcBandwidth = 150, #kHz AFC bandwidth
+    LnaGain = 0x88,
+    RssiThresh = -100, #dBm
+    AfcFei = 0x00 #AfcAutoOn
+    )
+    
+while 1:
+    data = rfm.ReceivePacket(7)
+    obj = rawsensor.CreateSensor(data)
+    print(str(obj))
+    if len(obj._data) > 0:
+       LogSensor(obj._data)