def decode(msg, hex=False):
"""msg: payload as one of hex string, list, or bytearray"""
bytes_ = bytearray(binascii.a2b_hex(msg) if hex else msg)
version = bytes_[0]
if version != PROTOCOL_VERSION:
raise ValueError(
"protocol version {} doesn't match v2".format(version))
devid = struct.unpack('>H', bytes_[1:3])[0]
bin_flags = bin(struct.unpack('>H', bytes_[3:5])[0])
flags = bin_flags[2:].zfill(struct.calcsize('>H') * 8)[::-1]
words = [
struct.unpack('>H', bytes_[i:i + 2])[0]
for i in range(5, len(bytes_), 2)
]
cur = 0
result = {'Device ID': devid, 'Protocol version': version}
for flag, sensor in zip(flags, SENSORS):
if flag != '1':
continue
x = words[cur:cur + sensor["length"]]
cur += sensor["length"]
for value in sensor['values']:
if 'convert' not in value:
continue
result[value['name']] = {
'value': value['convert'](x),
'unit': value.get('unit', None)
}
return result
def decode(msg, EUI, hex=False):
"""msg: payload as one of hex string, list, or bytearray"""
bytes_ = bytearray(binascii.a2b_hex(msg) if hex else msg)
version = bytes_[0]
if version != PROTOCOL_VERSION:
raise ValueError(
"protocol version {} doesn't match v2".format(version))
devid = struct.unpack(">H", bytes_[1:3])[0]
bin_flags = bin(struct.unpack(">H", bytes_[3:5])[0])
flags = bin_flags[2:].zfill(struct.calcsize(">H") * 8)[::-1]
words = [
struct.unpack(">H", bytes_[i:i + 2])[0]
for i in range(5, len(bytes_), 2)
]
cur = 0
result = {"Device ID": devid, "Protocol version": version}
SENSORS = get_SENSOR(EUI)
for flag, sensor in zip(flags, SENSORS):
if flag != "1":
continue
x = words[cur:cur + sensor["length"]]
cur += sensor["length"]
for value in sensor["values"]:
if "convert" not in value:
continue
result[value["name"]] = {
"value": value["convert"](x),
"unit": value.get("unit", None)
}
return (result)
def decode(msg, hex=False):
"""
msg: payload as one of hex string, list, or bytearray
return:
{
"Device ID": 4838,
"Protocol version": 2,
"Dielectric permittivity": {
"value": 1.0392113047231324,
"unit": null
},
"Volumetric water content": {
"value": 0.002387260000000002,
"unit": "m\u00b3\u22c5m\u207b\u00b3"
},
"Soil temperature": {
"value": 20.6,
"unit": "\u00b0C"
},
"Electrical conductivity": {
"value": 0,
"unit": "\u00b5S\u22c5cm\u207b\u00b9"
},
"Battery voltage": {
"value": 3.037,
"unit": "V"
}
}
"""
bytes_ = bytearray(binascii.a2b_hex(msg) if hex else msg)
version = bytes_[0]
if version != PROTOCOL_VERSION:
raise ValueError(
"protocol version {} doesn't match v2".format(version))
devid = struct.unpack('>H', bytes_[1:3])[0]
bin_flags = bin(struct.unpack('>H', bytes_[3:5])[0])
flags = bin_flags[2:].zfill(struct.calcsize('>H') * 8)[::-1]
words = [
struct.unpack('>H', bytes_[i:i + 2])[0]
for i in range(5, len(bytes_), 2)
]
cur = 0
result = {'Device ID': devid, 'Protocol version': version}
for flag, sensor in zip(flags, SENSORS):
if flag != '1':
continue
x = words[cur:cur + sensor["length"]]
cur += sensor["length"]
for value in sensor['values']:
if 'convert' not in value:
continue
result[value['name']] = {
'value': value['convert'](x),
'unit': value.get('unit', None)
}
return result
