prints if distance is increasing of decreasing

mappingbot/bluetooth.py

 from bluepy.btle import Scanner
 
 scanner = Scanner()
+i = 0
+d = 0
+#m = 0
+#h = 0
+values = []
+oldAverage = 0
+average = 0
+found = False
 while True:
-    devices = scanner.scan(1.0)
+    devices = scanner.scan(0.4)  # low delay will result in a lot of iterations without RSSI
 
     for device in devices:
         if device.addr == "30:4b:07:ff:e0:3e":
-            print("DEV = {} RSSI = {}".format(device.addr, device.rssi))
+            #found = True
+            #h += 1
+            # Calculate rolling average
+            values.append(device.rssi)
+            valSum = sum(values)
+            if len(values) > 20:
+                values.pop(0)
+            valSum = sum(values)
+            oldAverage = average
+            average = valSum/(len(values))
+
+            # if oldAverage != 0:
+            #     #print(average/oldAverage)
+            #     if average/oldAverage > 1.01:
+            #         i += 1
+            #         d = 0
+            #     elif average/oldAverage < 0.99:
+            #         d += 1
+            #         i = 0
+            #     else:
+            #         i = 0
+            #         d = 0
+            #
+            #     if d > 1:
+            #         # Moving away
+            #         print("decreasing")
+            #     elif i > 1:
+            #         # Coming closer
+            #         print("increasing")
+            #
+            #     print("D:" + str(d) + "   I:" + str(i))
+
+            if average > oldAverage:
+                d += 1
+                i = 0
+            elif average < oldAverage:
+                i += 1
+                d = 0
+            if d > 3:
+                # Coming closer
+                print("decreasing")
+            elif i > 3:
+                # Moving away
+                print("increasing")
+            print("D:" + str(d) + "   I:" + str(i))
+
+            #print(values)
+            #print("Average: " + str(average))
+        # else:
+        #     m += 1
+        #     print(m)
+
+    # if not found:
+    #     m += 1
+    # else:
+    #     found = False
+    # print("Hit: " + str(h) + "Miss: " + str(m))
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