90 lines
2.1 KiB
Python
90 lines
2.1 KiB
Python
#!/usr/bin/env python3
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# Send lora packet to node-red when being triggered by postgresql
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# Nico Schottelius <nico.schottelius -at- ungleich.ch>
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# 2016-11-02
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# GPLv3+
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import binascii
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import lorautil
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# L A T I T U D E L O N G I TU DE
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# status temp deg min sec +hem deg min min min
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# 9e 17 46 58 204 0 009 02 320 a5 9a 0e e7
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# 1 2 3 4 5 6 ? 8 9 10 11 12 13 14
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# on display: 46 58 122N 09 02 207E
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# 46.58 204 09.02 320
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# sodaq: lat=46.9699219 lon=9.0391764
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# google: 46.969943, 9.038999
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known_devices = [ "0018B20000000C58", "0018B20000000C37", "0018B20000000C59", "0018B20000000CD0" ]
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def get_gps(deveui, payload):
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res = []
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if not int(payload[0:2], 16) & (2**7):
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return res
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lat_deg = float(payload[4:6])
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lat_min = float(payload[6:8])
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lat_sec = float(payload[8:10])
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lat_frac_sec = float(payload[10:11])
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lat = lat_deg + lat_min/60.0 + lat_sec/3600.0 + lat_frac_sec/36000.0
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long_deg = float(payload[12:15])
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long_min = float(payload[15:17])
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long_sec = float(payload[17:19])
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long_frac_sec = float(payload[19:20])
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long = long_deg + long_min/60.0 + long_sec/3600 + long_frac_sec/36000.0
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pos = ":lat={:.6f} long={:.6f}".format(lat, long)
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res = [ deveui + pos ]
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return res
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def get_temp(deveui, payload):
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res = []
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if int(payload[0:2], 16) & (2**7):
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res = [ deveui + ":temperature=" + str(binascii.a2b_hex(payload)[1])]
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return res
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def decode_adeunis(pkg):
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data = pkg.split(":")
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deveui = data[0]
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payload = data[1]
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res = []
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# Only handle known devices
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if not deveui in known_devices:
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return res
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res += get_temp(deveui, payload)
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res += get_gps(deveui, payload)
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return res
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def nodered_adeunisrf(provider, data):
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res = decode_adeunis(data)
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if not res:
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return
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with websocket.create_connection("ws://localhost:1880/{}".format(provider)) as ws:
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for d in res:
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ws.send("%s" % d)
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if __name__ == '__main__':
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conns = lorautil.pg_conn_notify()
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while True:
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lorautil.pg_wait_for_pkg(conns, nodered_adeunisrf)
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