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nomis/evohome-schedule-decode.py

Last active February 24, 2019 16:30
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Decode Evohome schedule data
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evohome-schedule-decode.py
#!/usr/bin/env python3
import struct
import zlib
def decode_schedule(message):
data = zlib.decompress(bytes.fromhex(message))
for record in [data[i:i+20] for i in range(0, len(data), 20)]:
(zone, day, time, temp, unknown) = struct.unpack("<xxxxLLLHH", record)
day = ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"][day]
hours = time // 60
minutes = time % 60
temp /= 100
print("Zone {0}: {1} at {2:02d}:{3:02d} = {4:.2f} ({5})".format(zone, day, hours, minutes, temp, unknown))
decode_schedule("68816DCCC10D8030084051A0881DA8078F3D398303388B733A8A9A686CDACF8D1F7822FF1C2A5272C94D92F36E79CE73DB161FEFD649A4468D6F57F0143C054FC133F00C3C03CFC04BE025F01278093C07CFC173F01CBCE9FD6DEF9EB6D9D87AEF697BE70578015E80178D77014CCE19AA")
print()
decode_schedule("68816DD0CD0D80200C86E1B6D49FC42518C283474FCEE000DEDDC239DD80151451A0F1E3F8A67DD24054DEC144631F4295E8BC5BDFD936E97F6E6988E6B634061E038F81C7C013E009F00478023C073C073C073C073C059E024FB357FE4EB3D7F9AF35EF6E3D17DB2AB1D9B9E4EDA66D8F5776DB7C9F6DE93EDBDEFB42DDD27D83BF00896D372AB3D7F9AF35EF6E3D17DB2AB1D9B9E4EDA66D8F5776DB7C9F6DE93EDBDE")
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nomis commented Jan 17, 2019 •
edited
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Zone 0: Mon at 06:30 = 21.00 (2100)
Zone 0: Mon at 08:00 = 18.00 (1800)
Zone 0: Mon at 18:00 = 21.00 (2100)
Zone 0: Mon at 22:30 = 16.00 (1600)
Zone 0: Tue at 06:30 = 21.00 (2100)
Zone 0: Tue at 08:00 = 18.00 (1800)
Zone 0: Tue at 18:00 = 21.00 (2100)
Zone 0: Tue at 22:30 = 16.00 (1600)
Zone 0: Wed at 06:30 = 21.00 (2100)
Zone 0: Wed at 08:00 = 18.00 (1800)
Zone 0: Wed at 18:00 = 21.00 (2100)
Zone 0: Wed at 22:30 = 16.00 (1600)
Zone 0: Thu at 06:30 = 21.00 (2100)
Zone 0: Thu at 08:00 = 18.00 (1800)
Zone 0: Thu at 18:00 = 21.00 (2100)
Zone 0: Thu at 22:30 = 16.00 (1600)
Zone 0: Fri at 06:30 = 21.00 (2100)
Zone 0: Fri at 08:00 = 18.00 (1800)
Zone 0: Fri at 18:00 = 21.00 (2100)
Zone 0: Fri at 22:30 = 16.00 (1600)
Zone 0: Sat at 08:00 = 21.00 (2100)
Zone 0: Sat at 10:00 = 21.00 (2100)
Zone 0: Sat at 18:00 = 21.00 (2100)
Zone 0: Sat at 23:00 = 16.00 (1600)
Zone 0: Sun at 08:00 = 21.00 (2100)
Zone 0: Sun at 10:00 = 21.00 (2100)
Zone 0: Sun at 18:00 = 21.00 (2100)
Zone 0: Sun at 23:00 = 16.00 (1600)

Zone 0: Mon at 06:30 = 21.00 (61423)
Zone 0: Mon at 08:00 = 18.00 (61423)
Zone 0: Mon at 18:00 = 21.00 (61423)
Zone 0: Mon at 22:30 = 16.00 (61423)
Zone 0: Tue at 06:30 = 21.00 (61423)
Zone 0: Tue at 08:00 = 18.00 (61423)
Zone 0: Tue at 18:00 = 21.00 (61423)
Zone 0: Tue at 22:30 = 16.00 (61423)
Zone 0: Wed at 06:30 = 21.00 (61423)
Zone 0: Wed at 08:00 = 18.00 (61423)
Zone 0: Wed at 18:00 = 21.00 (61423)
Zone 0: Wed at 22:30 = 16.00 (61423)
Zone 0: Thu at 06:30 = 21.00 (61423)
Zone 0: Thu at 08:00 = 18.00 (61423)
Zone 0: Thu at 18:00 = 21.00 (61423)
Zone 0: Thu at 22:30 = 16.00 (61423)
Zone 0: Fri at 06:30 = 21.00 (61423)
Zone 0: Fri at 08:00 = 18.00 (61423)
Zone 0: Fri at 18:00 = 21.00 (0)
Zone 0: Fri at 22:30 = 16.00 (8199)
Zone 0: Sat at 08:00 = 21.00 (0)
Zone 0: Sat at 10:00 = 21.00 (8199)
Zone 0: Sat at 18:00 = 21.00 (8303)
Zone 0: Sat at 23:00 = 16.00 (0)
Zone 0: Sun at 06:30 = 21.00 (0)
Zone 0: Sun at 08:00 = 18.00 (0)
Zone 0: Sun at 18:00 = 21.00 (61184)
Zone 0: Sun at 22:30 = 16.00 (8203)

When compressing the data the maximum window size accepted is 16384 bytes but the compression level can be 9.

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