added lacrosse

README.md

@@ -5,3 +5,5 @@ interfacing the RFM69
 controlling remote control sockets
 usage example:
 sudo intertechno.py 0000F0000FFF
+##lacrosse.py
+receiving temperature sensors

lacrosse.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python2.7
+
+from rfm69 import Rfm69
+import rfm69
+import sensors
+from sensors import rawsensor
+import sys
+import time
+
+rfm = Rfm69()
+
+rfm.SetParams(
+    Freq = 868.300, #MHz center frequency
+    Datarate = 9.579, #17.241, #kbit/s baudrate
+    ModulationType = rfm69.FSK, #modulation
+    SyncPattern = [0x2d, 0xd4], #syncword
+    Bandwidth = 200, #kHz bandwidth
+    LnaGain = 0x88
+    )
+    
+print hex(rfm.ReadReg(0x07))
+print hex(rfm.ReadReg(0x08))
+print hex(rfm.ReadReg(0x09))
+
+    
+data = []
+
+while 1:
+    data = rfm.ReceivePacket(7)
+    obj = rawsensor.CreateSensor(data)
+    print(str(obj))
+    

sensors.py

@@ -0,0 +1,78 @@
+def crc8(buf):
+        crc = 0
+        for j in range(5):
+                crc = crc ^ buf[j]
+                for i in range(8):
+                        if (crc & 0x80 == 0x80):
+                                crc = (crc << 1) ^ 0x31
+                        else:
+                                crc <<= 1
+        return crc & 0xFF
+
+def csum(data):
+        s = 0
+        for i in range(12):
+                s += data[i]
+        return s & 0xFF
+
+class rawsensor(object):
+        def __init__(self, data):
+                self._data = {}
+                self.__raw = data
+
+        def __str__(self):
+                res = 'raw';
+                for data in self.__raw:
+                    res = res + ' ' + hex(data)[2:];
+                return res;
+
+        def GetData(self):
+                return self._data
+
+        @staticmethod
+        def CreateSensor(data):
+                obj = lacross.Create(data)
+                if (obj):
+                        return obj
+
+                obj = emt7110.Create(data)
+                if (obj):
+                        return obj
+
+                return rawsensor(data)
+
+class lacross(rawsensor):
+        def __init__(self, data):
+                rawsensor.__init__(self, data)
+                self._data['ID'] = hex((data[0] << 4 | data[1] >> 4) & 0xFC)[2:]
+                self._data['T'] = (10 * ((data[1] & 0xF) - 4) + (data[2] >> 4) + (data[2] & 0xF) / 10.0, 'C')
+                rh = data[3] & 0x7F
+                if rh <= 100:
+                        self._data['RH'] = (rh, '%')
+
+        def __str__(self):
+                res = 'La crosse ' + str(self._data) # + ' ' + rawsensor.__str__(self);
+                return res; 
+
+        @staticmethod
+        def Create(data):
+                if len(data) >= 5 and len(data) <= 8 and crc8(data) == 0:
+                        return lacross(data)
+
+class emt7110(rawsensor):
+        def __init__(self, data):
+                rawsensor.__init__(self, data)
+                id = data[0] << 24 | data[1] << 16 | data[2] << 8 | data[3]
+                self._data['ID'] = hex(id)[2:]
+                self._data['P'] = (((data[4] << 8 | data[5]) & 0x3FFF) / 2.0, 'W')
+                self._data['U'] = (data[8] / 2.0 + 128, 'V')
+                self._data['I'] = (data[6] << 8 | data[7], 'mA')
+                self._data['W'] = (((data[9] << 8 | data[10]) & 0x3FFF) / 100, 'kWh')
+
+        def __str__(self):
+                return 'emt7110 ' + str(self._data)
+
+        @staticmethod
+        def Create(data):
+                if len(data) >= 12 and len(data) <= 20 and csum(data) == 0:
+                        return emt7110(data)