rtl433
UNKNOWN
RTL-433 utility
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WT450 wireless weather sensors protocol. More...
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static int | wt450_callback (r_device *decoder, bitbuffer_t *bitbuffer) |
source from: http://ala-paavola.fi/jaakko/doku.php?id=wt450h More... | |
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static char * | output_fields [] |
r_device | wt450 |
WT450 wireless weather sensors protocol.
Tested devices: WT260H WT405H
Copyright (C) 2015 Tommy Vestermark Copyright (C) 2015 Ladislav Foldyna
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
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source from: http://ala-paavola.fi/jaakko/doku.php?id=wt450h
My timing constants defined below are those observed by my program
+—+ +—+ +----—+ + high | | | | | | | | | | | | | |
Each transmission is 36 bits long (i.e. 72 ms).
Data is transmitted in pure binary values, NOT BCD-coded.
Outdoor sensor transmits data temperature, humidity. Transmissions also include channel code and house code. The sensor transmits every 60 seconds 3 packets.
1100 0001 | 0011 0011 | 1000 0011 | 1011 0011 | 0001 xxxx ssss | ccxx bhhh | hhhh tttt | tttt tttt | sseo
References bitbuffer::bb, bitbuffer_printf(), bitbuffer::bits_per_row, DATA_DOUBLE, DATA_FORMAT, DATA_INT, data_make(), DATA_STRING, DECODE_ABORT_EARLY, DECODE_ABORT_LENGTH, DECODE_FAIL_MIC, decoder_output_data(), r_device::verbose, and xor_bytes().
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r_device wt450 |