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Add support for Bresser CO2 PN 7009977 and HCHO/VOC PN 7009978 sensors #2815

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Merged
merged 6 commits into from
Feb 3, 2024
Merged

Add support for Bresser CO2 PN 7009977 and HCHO/VOC PN 7009978 sensors #2815

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7c0720d
Update bresser_7in1.c add co2 and hcho/voc sensors
ProfBoc75 Feb 3, 2024
df3935a
Update README.md add co2 and hcho/voc sensors
ProfBoc75 Feb 3, 2024
c853488
Update rtl_433.example.conf add co2 and hcho/voc sensors
ProfBoc75 Feb 3, 2024
f36fefc
Update bresser_7in1.c correct a typo
ProfBoc75 Feb 3, 2024
6412f23
Update bresser_7in1.c comment corrections
ProfBoc75 Feb 3, 2024
bed2430
Update bresser_7in1.c few corrections
ProfBoc75 Feb 3, 2024
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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -258,7 +258,7 @@ See [CONTRIBUTING.md](./docs/CONTRIBUTING.md).
[170] LaCrosse Technology View LTV-WR1 Multi Sensor
[171] LaCrosse Technology View LTV-TH Thermo/Hygro Sensor
[172] Bresser Weather Center 6-in-1, 7-in-1 indoor, soil, new 5-in-1, 3-in-1 wind gauge, Froggit WH6000, Ventus C8488A
[173] Bresser Weather Center 7-in-1, Air Quality PM2.5 / PM10
[173] Bresser Weather Center 7-in-1, Air Quality PM2.5/PM10 7009970, CO2 7009977, HCHO/VOC 7009978
[174] EcoDHOME Smart Socket and MCEE Solar monitor
[175] LaCrosse Technology View LTV-R1, LTV-R3 Rainfall Gauge, LTV-W1/W2 Wind Sensor
[176] BlueLine Innovations Power Cost Monitor
Expand Down
2 changes: 1 addition & 1 deletion conf/rtl_433.example.conf
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Expand Up @@ -399,7 +399,7 @@ convert si
protocol 170 # LaCrosse Technology View LTV-WR1 Multi Sensor
protocol 171 # LaCrosse Technology View LTV-TH Thermo/Hygro Sensor
protocol 172 # Bresser Weather Center 6-in-1, 7-in-1 indoor, soil, new 5-in-1, 3-in-1 wind gauge, Froggit WH6000, Ventus C8488A
protocol 173 # Bresser Weather Center 7-in-1, Air Quality PM2.5 / PM10
protocol 173 # Bresser Weather Center 7-in-1, Air Quality PM2.5/PM10 7009970, CO2 7009977, HCHO/VOC 7009978
protocol 174 # EcoDHOME Smart Socket and MCEE Solar monitor
protocol 175 # LaCrosse Technology View LTV-R1, LTV-R3 Rainfall Gauge, LTV-W1/W2 Wind Sensor
protocol 176 # BlueLine Innovations Power Cost Monitor
Expand Down
125 changes: 117 additions & 8 deletions src/devices/bresser_7in1.c
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@@ -1,5 +1,5 @@
/** @file
Decoder for Bresser Weather Center 7-in-1.
Decoder for Bresser Weather Center 7-in-1 and Air quality sensors.

Copyright (C) 2019 Christian W. Zuckschwerdt <[email protected]>

Expand All @@ -11,11 +11,16 @@

#include "decoder.h"

#define SENSOR_TYPE_WEATHER 1
#define SENSOR_TYPE_AIR_PM 8
#define SENSOR_TYPE_WEATHER 1
#define SENSOR_TYPE_AIR_PM 8
#define SENSOR_TYPE_CO2 10
#define SENSOR_TYPE_HCHO_VOC 11

/**
Decoder for Bresser Weather Center 7-in-1 and Air Quality PM2.5 / PM10, outdoor sensors.
Decoder for Bresser Weather Center 7-in-1 and Air quality sensors.
- Air Quality PM2.5/PM10 PN 7009970
- CO2 sensor PN 7009977
- HCHO/VOC sensor PN 7009978

See
https://github.com/merbanan/rtl_433/issues/1492
Expand Down Expand Up @@ -53,6 +58,70 @@ Data layout:

DIGEST:8h8h ID?8h8h ?8h8h STYPE:4h STARTUP:1b CH:3b ?8h 4h ?4h8h4h PM_2_5:4h8h4h PM10:4h8h4h ?4h ?8h4h BATT:1b ?3b ?8h8h8h8h8h8h TRAILER:8h8h8h

Air Quality Sensor CO2 (PN 7009977) : issue #2813

From user manual , co2 ppm is from 400 to 5000 ppm, so it's 16 bits coded.

Samples :
Raw :
SType Startup & Channel

| |
{207}dab6d782acd9 a 1 ad9aad9aad9aaaaaaaaaaaaaaaaae99aaaaa00 Type = 0xa = 10, Startup = 0, ch = 1
{207}04a9d782acd8 a 1 ad9aad9aad9aaaaaaaaaaaaaaaaae99aaaaa00 Type = 0xa = 10, Startup = 0, ch = 1
{207}04a9d782acd8 a 1 ad9aad9aad9aaaaaaaaaaaaaaaaae99aaaaa00 Type = 0xa = 10, Startup = 0, ch = 1
{207}0dd1d782b8ee a 1 ad9aad9aad9aaaaaaaaaaaaaaaaae99aaaaa00 Type = 0xa = 10, Startup = 0, ch = 1

Data layout raw :
DIGEST:16h ID:16h 8x8x STYPE:4h STARTUP:1b CH:3d 8x8x8x8x8x8x8x8x8x8x8x8x8x8x8x8x8x8x TRAILER:8x

XOR / de-whitened :

0 1 2 3 4 5 6 7 8 9101112131415161718192021222324
DIGEST ID ppm bat
| | | |
{200}701c 7d28 0673 0b073007300730000000000000000043300000 [ XOR from g001_868.34M_1000k.cu8 co2 ppm 673]
{200}ae03 7d28 0672 0b073007300730000000000000000043300000 [ XOR from g001_868.34M_250k.cu8 co2 ppm 672]
{200}ae03 7d28 0672 0b073007300730000000000000000043300000 [ XOR from g002_868.34M_1000k.cu8 co2 ppm 672]
{200}a77b 7d28 1244 0b073007300730000000000000000043300000 [ XOR from g002_868.34M_250k.cu8 co2 ppm 1244]

Data layout de-whitened :
DIGEST:16h ID:16h PPM:16h 8x8x8x8x8x8x8x8x8x8x4x BATT:1b 3x8x8x8x8x8x8x TRAILER:16x

Air Quality Sensor HCHO/VOC (PN 7009978) : issue #2814

From user manual , hcho ppb is from 0 to 1000 ppm, so it's 16 bits coded.
and voc level is from 1 (bad air quality) to 5 (good air quality), so it's 4 bits coded.

Samples:
Raw :
SType Startup & Channel
| |
{207}3f2dc4a5aaaf b 1 aaa8aaa8aaa8aaaaaaaaaaaaaaaae9feaaaa00 Type = 0xb = 11, Startup = 0, ch = 1
{207}0c1cc4a5aaaf b 1 aaa8aaa8aaa8aaaaaaaaaaaaaaaae9ffaaaa00 Type = 0xb = 11, Startup = 0, ch = 1
{207}3f2dc4a5aaaf b 1 aaa8aaa8aaa8aaaaaaaaaaaaaaaae9feaaaa00 Type = 0xb = 11, Startup = 0, ch = 1
{207}0c1cc4a5aaaf b 1 aaa8aaa8aaa8aaaaaaaaaaaaaaaae9ffaaaa00 Type = 0xb = 11, Startup = 0, ch = 1
{207}61afc4a5aaa2 b 9 aaa8aaa8aaa9aaaaaaaaaaaaaaaae9f8aaaa00 Type = 0xb = 11, Startup = 1, ch = 1
{207}ecddc4a5aaae b 9 aaa8aaa8aaa9aaaaaaaaaaaaaaaae9fbaaaa00 Type = 0xb = 11, Startup = 1, ch = 1

Data layout raw :
DIGEST:16h ID:16h 8x8x STYPE:4h STARTUP:1b CH:3d 8x8x8x8x8x8x8x8x8x8x8x8x8x8x8x8x8x8x TRAILER:8x

XOR / de-whitened :

0 1 2 3 4 5 6 7 8 9101112131415161718192021 22 2324
DIGEST ID ppb bat voc
| | | | |
{200}9587 6e0f 0005 1b0002000200020000000000000000435 4 0000 [XOR from g001_868.34M_1000k.cu8 hcho_ppb 5 voc_level 4]
{200}a6b6 6e0f 0005 1b0002000200020000000000000000435 5 0000 [XOR from g001_868.34M_250k.cu8 hcho_ppb 5 voc_level 5]
{200}9587 6e0f 0005 1b0002000200020000000000000000435 4 0000 [XOR from g002_868.34M_1000k.cu8 hcho_ppb 5 voc_level 4]
{200}a6b6 6e0f 0005 1b0002000200020000000000000000435 5 0000 [XOR from g001_868.34M_250k.cu8 hcho_ppb 5 voc_level 5]
{200}cb05 6e0f 0008 130002000200030000000000000000435 2 0000 [XOR from g003_868.34M_1000k.cu8 hcho_ppb 8 voc_level 2]
{200}4677 6e0f 0004 130002000200030000000000000000435 1 0000 [XOR from g004_868.34M_1000k.cu8 hcho_ppb 4 voc_level 1]

Data layout de-whitened :
DIGEST:16h ID:16h PPB:16h 8x8x8x8x8x8x8x8x8x8x4x BATT:1b 3x8x8x8x8x8x4x VOC:4h TRAILER:16x

First two bytes are an LFSR-16 digest, generator 0x8810 key 0xba95 with a final xor 0x6df1, which likely means we got that wrong.
*/

Expand Down Expand Up @@ -158,11 +227,9 @@ static int bresser_7in1_decode(r_device *decoder, bitbuffer_t *bitbuffer)
int pm_2_5 = (msg[10] & 0x0f) * 1000 + (msg[11] >> 4) * 100 + (msg[11] & 0x0f) * 10 + (msg[12] >> 4);
int pm_10 = (msg[12] & 0x0f) * 1000 + (msg[13] >> 4) * 100 + (msg[13] & 0x0f) * 10 + (msg[14] >> 4);

// To Do: identify further data

/* clang-format off */
data = data_make(
"model", "", DATA_STRING, "Bresser-7in1",
"model", "", DATA_STRING, "Bresser-7in1", // should be Bresser-Air-PM
"id", "", DATA_INT, id,
"channel", "", DATA_INT, chan,
"startup", "Startup", DATA_COND, !nstartup, DATA_INT, !nstartup,
Expand All @@ -176,6 +243,45 @@ static int bresser_7in1_decode(r_device *decoder, bitbuffer_t *bitbuffer)
decoder_output_data(decoder, data);
return 1;

} else if (s_type == SENSOR_TYPE_CO2) {
int co2 = ((msg[4]& 0xf0) >> 4) * 1000 + (msg[4]& 0x0f) * 100 + ((msg[5]& 0xf0) >> 4) * 10 + (msg[5] & 0x0f);

/* clang-format off */
data = data_make(
"model", "", DATA_STRING, "Bresser-CO2",
"id", "", DATA_INT, id,
"channel", "", DATA_INT, chan,
"startup", "Startup", DATA_COND, !nstartup, DATA_INT, !nstartup,
"battery_ok", "Battery", DATA_INT, !battery_low,
"co2_ppm", "Carbon Dioxide", DATA_FORMAT, "%i ppm", DATA_INT, co2,
"mic", "Integrity", DATA_STRING, "CRC",
NULL);
/* clang-format on */

decoder_output_data(decoder, data);
return 1;

} else if (s_type == SENSOR_TYPE_HCHO_VOC) {
int hcho = ((msg[4]& 0xf0) >> 4) * 1000 + (msg[4]& 0x0f) * 100 + ((msg[5]& 0xf0) >> 4) * 10 + (msg[5] & 0x0f);
int voc = (msg[22]& 0x0f);
/* clang-format off */
data = data_make(
"model", "", DATA_STRING, "Bresser-HCHO-VOC",
"id", "", DATA_INT, id,
"channel", "", DATA_INT, chan,
"startup", "Startup", DATA_COND, !nstartup, DATA_INT, !nstartup,
"battery_ok", "Battery", DATA_INT, !battery_low,
"hcho_ppb", "Formaldehyde", DATA_FORMAT, "%i ppb", DATA_INT, hcho,
"voc_level", "Volatile Organic Compounds",DATA_FORMAT, "%i", DATA_INT, voc, // from 1 bad air quality to 5 very good air quality
"mic", "Integrity", DATA_STRING, "CRC",
NULL);
/* clang-format on */

decoder_output_data(decoder, data);
return 1;

// To Do: identify further data

} else {
decoder_logf(decoder, 2, __func__, "DECODE_FAIL_SANITY, s_type=%d not implemented", s_type);
return DECODE_FAIL_SANITY;
Expand All @@ -200,12 +306,15 @@ static char const *const output_fields[] = {
"pm_2_5_ug_m3",
"pm_10_ug_m3",
"battery_ok",
"co2_ppm",
"hcho_ppb",
"voc_level",
"mic",
NULL,
};

r_device const bresser_7in1 = {
.name = "Bresser Weather Center 7-in-1, Air Quality PM2.5 / PM10",
.name = "Bresser Weather Center 7-in-1, Air Quality PM2.5/PM10 7009970, CO2 7009977, HCHO/VOC 7009978 sensors",
.modulation = FSK_PULSE_PCM,
.short_width = 124,
.long_width = 124,
Expand Down