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