Merge pull request #23 from Lekensteyn/hid10-battery

Parse battery status of HID++ 1.0 devices

lib/logitech/unifying_receiver/hidpp10.py

@@ -94,8 +94,16 @@ def get_battery(device):
 
 	reply = get_register(device, 'battery_status', 0x07)
 	if reply:
-		battery_status = ord(reply[:1])
-		_log.info("%s: battery status %02X", device, battery_status)
+		level = ord(reply[:1])
+		battery_status = ord(reply[2:3])
+		charge = (90 if level == 7 # full
+			else 50 if level == 5 # good
+			else 20 if level == 3 # low
+			else 5 if level == 1 # critical
+			else 0 ) # wtf?
+		status = ('charging' if battery_status == 0x25
+			else 'discharging')
+		return charge, status
 
 
 def get_serial(device):