Add support for Bresser water leakage sensor PN: 7009975 (#2590)
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Matthias Prinke
GitHub
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5 changed files with 169 additions and 0 deletions
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@ -332,6 +332,7 @@ See [CONTRIBUTING.md](./docs/CONTRIBUTING.md).
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[244] Fine Offset Electronics WS90 weather station
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[245]* ThermoPro TX-2C Thermometer and Humidity sensor
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[246] TFA 30.3151 Weather Station
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[247] Bresser water leakage
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* Disabled by default, use -R n or a conf file to enable
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@ -473,6 +473,7 @@ convert si
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protocol 244 # Fine Offset Electronics WS90 weather station
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# protocol 245 # ThermoPro TX-2C Thermometer and Humidity sensor
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protocol 246 # TFA 30.3151 Weather Station
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protocol 247 # Bresser water leakage
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## Flex devices (command line option "-X")
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@ -254,6 +254,7 @@
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DECL(fineoffset_ws90) \
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DECL(thermopro_tx2c) \
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DECL(tfa_303151) \
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DECL(bresser_leakage) \
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/* Add new decoders here. */
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@ -68,6 +68,7 @@ add_library(r_433 STATIC
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devices/bresser_5in1.c
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devices/bresser_6in1.c
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devices/bresser_7in1.c
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devices/bresser_leakage.c
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devices/bt_rain.c
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devices/burnhardbbq.c
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devices/calibeur.c
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165
src/devices/bresser_leakage.c
Normal file
165
src/devices/bresser_leakage.c
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@ -0,0 +1,165 @@
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/** @file
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Bresser Water Leakage Sensor.
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Copyright (C) 2023 Matthias Prinke <m.prinke@arcor.de>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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*/
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#define SENSOR_TYPE_LEAKAGE 5
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/**
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Decoder for Bresser Water Leakage outdoor sensor, PN 7009975
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see https://github.com/merbanan/rtl_433/issues/2576
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Based on bresser_6in1.c
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Preamble: aa aa 2d d4
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Data layout:
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CCCCCCCC CCCCCCCC IIIIIIII IIIIIIII IIIIIIII IIIIIIII SSSSQHHH ANBBFFFF
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- C: 16-bit, crc16/xmodem, polynomial: 0x1021, init: 0x0000, range: byte 2...6
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- I: 24-bit little-endian id; changes on power-up/reset
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- S: 4 bit sensor type
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- Q: 1 bit startup; changes from 0 to 1 approx. one hour after power-on/reset
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- H: 3 bit channel; set via switch on the device, latched at power-on/reset
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- A: 1 bit alarm
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- N: 1 bit no_alarm; inverse of alarm
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- B: 2 bit battery state; 0b11 if battery is o.k.
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- F: 4 bit flags (always 0b0000)
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Examples:
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---------
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[Bresser Water Leakage Sensor, PN 7009975]
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[00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25]
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C7 70 35 97 04 08 57 70 00 00 00 00 00 00 00 00 03 FF FF FF FF FF FF FF FF FF [CH7]
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DF 7D 36 49 27 09 56 70 00 00 00 00 00 00 00 00 03 FF FF FF FF FF FF FF FF FF [CH6]
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9E 30 79 84 33 06 55 70 00 00 00 00 00 00 00 00 03 FF FD DF FF BF FF DF FF FF [CH5]
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E2 C8 68 27 91 24 54 70 00 00 00 00 00 00 00 00 03 FF FF FF FF FF FF FF FF FF [CH4]
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B3 DA 55 57 17 40 53 70 00 00 00 00 00 00 00 00 03 FF FF FF FF FF FF FF FF FB [CH3]
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37 FA 84 73 03 02 52 70 00 00 00 00 00 00 00 00 03 FF FF FF DF FF FF FF FF FF [CH2]
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27 F3 80 02 52 88 51 70 00 00 00 00 00 00 00 00 03 FF FF FF FF FF DF FF FF FF [CH1]
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A6 FB 80 02 52 88 59 70 00 00 00 00 00 00 00 00 03 FD F7 FF FF BF FF FF FF FF [CH1+NSTARTUP]
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A6 FB 80 02 52 88 59 B0 00 00 00 00 00 00 00 00 03 FF FF FF FD FF F7 FF FF FF [CH1+NSTARTUP+ALARM]
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A6 FB 80 02 52 88 59 70 00 00 00 00 00 00 00 00 03 FF FF BF F7 F7 FD 7F FF FF [CH1+NSTARTUP]
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[Reset]
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C0 10 36 79 37 09 51 70 00 00 00 00 00 00 00 00 01 1E FD FD FF FF FF DF FF FF [CH1]
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C0 10 36 79 37 09 51 B0 00 00 00 00 00 00 00 00 03 FE FD FF AF FF FF FF FF FD [CH1+ALARM]
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[Reset]
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71 9C 54 81 72 09 51 40 00 00 00 00 00 00 00 00 0F FF FF FF FF FF FF DF FF FE [CH1+BATT_LO]
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71 9C 54 81 72 09 51 40 00 00 00 00 00 00 00 00 0F FE FF FF FF FF FB FF FF FF
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71 9C 54 81 72 09 51 40 00 00 00 00 00 00 00 00 07 FD F7 FF DF FF FF DF FF FF
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71 9C 54 81 72 09 51 80 00 00 00 00 00 00 00 00 1F FF FF F7 FF FF FF FF FF FF [CH1+BATT_LO+ALARM]
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F0 94 54 81 72 09 59 40 00 00 00 00 00 00 00 00 0F FF DF FF FF FF FF BF FD F7 [CH1+BATT_LO+NSTARTUP]
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F0 94 54 81 72 09 59 80 00 00 00 00 00 00 00 00 03 FF B7 FF ED FF FF FF DF FF [CH1+BATT_LO+NSTARTUP+ALARM]
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*/
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#include "decoder.h"
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static int bresser_leakage_decode(r_device *decoder, bitbuffer_t *bitbuffer)
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{
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uint8_t const preamble_pattern[] = {0xaa, 0xaa, 0x2d, 0xd4};
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data_t *data;
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uint8_t msg[18];
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uint32_t sensor_id;
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uint8_t s_type;
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uint8_t chan;
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uint8_t startup;
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uint8_t battery_ok;
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int alarm;
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int no_alarm;
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int decode_ok;
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if (bitbuffer->num_rows != 1
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|| bitbuffer->bits_per_row[0] < 160
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|| bitbuffer->bits_per_row[0] > 440) {
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decoder_logf(decoder, 2, __func__, "bit_per_row %u out of range", bitbuffer->bits_per_row[0]);
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return DECODE_ABORT_EARLY; // Unrecognized data
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}
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unsigned start_pos = bitbuffer_search(bitbuffer, 0, 0,
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preamble_pattern, sizeof (preamble_pattern) * 8);
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if (start_pos >= bitbuffer->bits_per_row[0]) {
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return DECODE_ABORT_LENGTH;
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}
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start_pos += sizeof (preamble_pattern) * 8;
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unsigned len = bitbuffer->bits_per_row[0] - start_pos;
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if (len < sizeof(msg) * 8) {
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decoder_logf(decoder, 2, __func__, "%u too short", len);
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return DECODE_ABORT_LENGTH; // message too short
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}
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bitbuffer_extract_bytes(bitbuffer, 0, start_pos, msg, sizeof(msg) * 8);
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decoder_log_bitrow(decoder, 2, __func__, msg, sizeof(msg) * 8, "");
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// CRC check
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uint16_t crc_calculated = crc16(&msg[2], 5, 0x1021, 0x0000);
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uint16_t crc_received = msg[0] << 8 | msg[1];
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decoder_logf(decoder, 2, __func__, "CRC 0x%04X = 0x%04X", crc_calculated, crc_received);
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if (crc_received != crc_calculated) {
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decoder_logf(decoder, 1, __func__, "CRC check failed (0x%04X != 0x%04X)", crc_calculated, crc_received);
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return DECODE_FAIL_MIC;
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}
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sensor_id = ((uint32_t)msg[2] << 24) | (msg[3] << 16) | (msg[4] << 8) | (msg[5]);
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s_type = msg[6] >> 4;
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chan = (msg[6] & 0x7);
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battery_ok = ((msg[7] & 0x30) != 0x00) ? 1 : 0;
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startup = (msg[6] >> 3) & 1;
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alarm = ((msg[7] & 0x80) == 0x80) ? 1 : 0;
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no_alarm = ((msg[7] & 0x40) == 0x40) ? 1 : 0;
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// Sanity checks
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decode_ok = (s_type == SENSOR_TYPE_LEAKAGE) &&
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(alarm != no_alarm) &&
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(chan != 0);
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if (!decode_ok)
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return 0;
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/* clang-format off */
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data = data_make(
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"model", "", DATA_STRING, "Bresser-Leakage",
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"id", "", DATA_FORMAT, "%08x", DATA_INT, sensor_id,
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"channel", "", DATA_INT, chan,
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"battery_ok", "Battery", DATA_INT, battery_ok,
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"alarm", "Alarm", DATA_INT, alarm,
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"startup", "Startup", DATA_COND, startup, DATA_INT, startup,
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NULL);
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/* clang-format on */
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decoder_output_data(decoder, data);
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return 1;
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}
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static char const *const output_fields[] = {
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"model",
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"id",
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"channel",
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"battery_ok",
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"startup",
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"alarm",
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NULL,
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};
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r_device const bresser_leakage = {
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.name = "Bresser water leakage",
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.modulation = FSK_PULSE_PCM,
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.short_width = 124,
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.long_width = 124,
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.reset_limit = 25000,
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.decode_fn = &bresser_leakage_decode,
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.fields = output_fields,
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};
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