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Improve BMW Gen4-Gen5 TPMS and Add Support Audi TPMS Pressure Alert ()

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* Improve BMW Gen4-Gen5 TPMS and Add support Audi TPMS Pressure Alert

* Docs Update Readme for BMW Gen4-Gen5 TPMS and Audi TPMS Pressure Alert
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Bruno OCTAU 2024-04-14 21:55:11 +02:00 • committed by GitHub
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2 changed files with 15 additions and 13 deletions

2
README.md
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@ -337,7 +337,7 @@ See [CONTRIBUTING.md](./docs/CONTRIBUTING.md).
[249] Bresser lightning [249] Bresser lightning
[250] Schou 72543 Day Rain Gauge, Motonet MTX Rain, MarQuant Rain Gauge, TFA Dostmann 30.3252.01/47.3006.01 Rain Gauge and Thermometer, ADE WS1907 [250] Schou 72543 Day Rain Gauge, Motonet MTX Rain, MarQuant Rain Gauge, TFA Dostmann 30.3252.01/47.3006.01 Rain Gauge and Thermometer, ADE WS1907
[251] Fine Offset / Ecowitt WH55 water leak sensor [251] Fine Offset / Ecowitt WH55 water leak sensor
[252] BMW Gen4-Gen5 and Audi TPMS, multi-brand HUF, Continental, Schrader/Sensata [252] BMW Gen4-Gen5 TPMS and Audi TPMS Pressure Alert, multi-brand HUF/Beru, Continental, Schrader/Sensata, Audi
[253] Watts WFHT-RF Thermostat [253] Watts WFHT-RF Thermostat
[254] Thermor DG950 weather station [254] Thermor DG950 weather station
[255] Mueller Hot Rod water meter [255] Mueller Hot Rod water meter

26
src/devices/tpms_bmw.c
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@ -1,5 +1,5 @@
/** @file /** @file
BMW Gen4 Gen5 and Audi TPMS sensor. BMW Gen4 Gen5 TPMS and Audi TPMS Pressure Alert sensor.
Copyright (C) 2024 Bruno OCTAU (ProfBoc75), \@petrjac, \@Gucioo, Christian W. Zuckschwerdt <christian@zuckschwerdt.org> Copyright (C) 2024 Bruno OCTAU (ProfBoc75), \@petrjac, \@Gucioo, Christian W. Zuckschwerdt <christian@zuckschwerdt.org>
@ -9,14 +9,14 @@
(at your option) any later version. (at your option) any later version.
*/ */
/** /**
BMW Gen4 Gen5 and Audi TPMS sensor. BMW Gen4 Gen5 TPMS and Audi TPMS Pressure Alert sensor.
issue #2821: issue #2821:
- BMW Gen5 TPMS support open by \@petrjac - BMW Gen5 TPMS support open by \@petrjac
- BMW Gen4 TPMS supported - BMW Gen4 TPMS supported
#2821 issue comment 2043641606 \@Gucioo #2821 issue comment 2043641606 \@Gucioo
- Audi TPMS based on the same protocol with shorter message - Audi TPMS based on the same protocol with shorter message in case of sudden increase or decrease in pressure
Samples raw : Samples raw :
@ -24,7 +24,7 @@ Samples raw :
{207}555554b2aab4b2b552acb4d332accb32b552aaacd334d32ad334 {207}555554b2aab4b2b552acb4d332accb32b552aaacd334d32ad334
{211}555554b2aab4b2b552acb4d332acb4cab54caaacd4cad32b4b55e {211}555554b2aab4b2b552acb4d332acb4cab54caaacd4cad32b4b55e
Audi Audi Pressure Alert
{166}2aaaaa5955555955a5556a65666a56aa65a65999fc {166}2aaaaa5955555955a5556a65666a56aa65a65999fc
{165}2aaaaa5955555955a5556a65666a56aa65a65999f8 {165}2aaaaa5955555955a5556a65666a56aa65a65999f8
{167}5555552caaaaacaad2aab532b3352b5532d32cccfe {167}5555552caaaaacaad2aab532b3352b5532d32cccfe
@ -40,19 +40,19 @@ Samples after MC Inverted:
03 23 e1 36 a1 4a 3e 01 6b 68 6b 03 23 e1 36 a1 4a 3e 01 6b 68 6b
03 23 e1 36 a1 34 3d 01 74 68 cf 03 23 e1 36 a1 34 3d 01 74 68 cf
AUDI AUDI Pressure Alert
0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7
MM II II II II PP TT CC MM II II II II PP TT CC
00 20 c0 74 57 36 4c 23 00 20 c0 74 57 36 4c 23
- MM : Brand BRAND ID, 0x00 = Audi, 0x03 = HUF Gen 5, 0x23 = Schrader/Sensata, 0x80 = Continental - MM : Brand BRAND ID, 0x00 = Audi Pressure Alert, 0x03 = HUF Gen 5/Beru, 0x23 = Schrader/Sensata, 0x80 = Continental, 0x88 Audi
- II : Sensor ID - II : Sensor ID
- PP : Pressure * 2.45 kPa - PP : Pressure * 2.45 kPa
- TT : Temp - 52 C - TT : Temp - 52 C
- F1 : BMW only, Warning Flags , battery, fast deflating ... not yet guess - F1 : BMW only, Warning Flags , battery, fast deflating ... not yet guess
- F2 : BMW only, Sequence number, to be confirmed - F2 : BMW only, Sequence number, to be confirmed
- F3 : BMW only, Target Nominal Pressure * 0.0245 for 0x03 - F3 : BMW only, Target Nominal Pressure * 0.0245 for 0x03
- CC : CRC 8 of previous bytes (7 bytes for Audi, 10 bytes for BMW) , poli 0x2f, init 0xaa - CC : CRC 8 of previous bytes (7 bytes for Audi Pressure Alert, 10 bytes for BMW) , poli 0x2f, init 0xaa
Data layout after MC for HUF Gen 5: Data layout after MC for HUF Gen 5:
@ -69,7 +69,7 @@ Schrader/Sensata model:
F1, F2, F3 to guess F1, F2, F3 to guess
Audi model: Audi Pressure Alert:
BRAND = 8h | SENSOR_ID = 32h | PRESS = 8d | TEMP = 8d | CRC = 8h BRAND = 8h | SENSOR_ID = 32h | PRESS = 8d | TEMP = 8d | CRC = 8h
@ -85,7 +85,7 @@ static int tpms_bmw_decode(r_device *decoder, bitbuffer_t *bitbuffer)
uint8_t *b; uint8_t *b;
// preamble is aa59 // preamble is aa59
uint8_t const preamble_pattern[] = {0xaa, 0x59}; uint8_t const preamble_pattern[] = {0xaa, 0x59};
uint8_t len_msg = 11; // default for BMW = 11, if Audi len_msg = 8 uint8_t len_msg = 11; // default for BMW = 11, if Audi-Alert len_msg = 8
int flags1 = 0; int flags1 = 0;
int flags2 = 0; int flags2 = 0;
int flags3 = 0; int flags3 = 0;
@ -128,7 +128,7 @@ static int tpms_bmw_decode(r_device *decoder, bitbuffer_t *bitbuffer)
return DECODE_FAIL_MIC; // crc mismatch return DECODE_FAIL_MIC; // crc mismatch
} }
decoder_log(decoder, 2, __func__, "BMW or Audi found"); decoder_log(decoder, 2, __func__, "BMW or Audi found");
int brand_id = b[0]; // 0x00 = Audi, 0x03 = HUF Gen 5, 0x80 = Continental, 0x23 = Sensata, 0x88 = ?? int brand_id = b[0]; // 0x00 = Audi-Alert, 0x03 = HUF/Beru, 0x23 = Schrader/Sensata, 0x80 = Continental, 0x88 = Audi
float pressure_kPa = b[5] * 2.45; float pressure_kPa = b[5] * 2.45;
int temperature_C = b[6] - 52; int temperature_C = b[6] - 52;
@ -148,8 +148,9 @@ static int tpms_bmw_decode(r_device *decoder, bitbuffer_t *bitbuffer)
/* clang-format off */ /* clang-format off */
data_t *data = data_make( data_t *data = data_make(
"model", "", DATA_COND, len_msg == 11, DATA_STRING, "BMW-GEN5", "model", "", DATA_COND, len_msg == 11, DATA_STRING, "BMW-GEN5",
"model", "", DATA_COND, len_msg == 8, DATA_STRING, "Audi", "model", "", DATA_COND, len_msg == 8, DATA_STRING, "Audi-PressureAlert",
"type", "", DATA_STRING, "TPMS", "type", "", DATA_STRING, "TPMS",
"alert", "Alert", DATA_COND, len_msg == 8, DATA_STRING, "Alert Pressure increase/decrease !",
"brand", "Brand", DATA_INT, brand_id, "brand", "Brand", DATA_INT, brand_id,
"id", "", DATA_STRING, id_str, "id", "", DATA_STRING, id_str,
"pressure_kPa", "Pressure", DATA_FORMAT, "%.1f kPa", DATA_DOUBLE, (double)pressure_kPa, "pressure_kPa", "Pressure", DATA_FORMAT, "%.1f kPa", DATA_DOUBLE, (double)pressure_kPa,
@ -169,6 +170,7 @@ static int tpms_bmw_decode(r_device *decoder, bitbuffer_t *bitbuffer)
static char const *const output_fields[] = { static char const *const output_fields[] = {
"model", "model",
"type", "type",
"alert",
"id", "id",
"brand", "brand",
"battery_ok", "battery_ok",
@ -182,7 +184,7 @@ static char const *const output_fields[] = {
}; };
r_device const tpms_bmw = { r_device const tpms_bmw = {
.name = "BMW Gen4-Gen5 and Audi TPMS, multi-brand HUF, Continental, Schrader/Sensata", .name = "BMW Gen4-Gen5 TPMS and Audi TPMS Pressure Alert, multi-brand HUF/Beru, Continental, Schrader/Sensata, Audi",
.modulation = FSK_PULSE_PCM, .modulation = FSK_PULSE_PCM,
.short_width = 25, .short_width = 25,
.long_width = 25, .long_width = 25,