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Add support for Thermopro TP828B Meat Thermometers 2 probes
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@ProfBoc75
ProfBoc75 committed Nov 6, 2024
1 parent 4fa3756 commit 54e0507
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2 changes: 1 addition & 1 deletion include/rtl_433_devices.h
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Expand Up @@ -266,7 +266,7 @@
DECL(thermopro_tp28b) \
DECL(tpms_bmwg3) \
DECL(chamberlain_cwpirc) \
DECL(thermopro_tp829b) \
DECL(thermopro_tp82xb) \
DECL(arad_ms_meter) \
DECL(geevon) \
DECL(fineoffset_wh46) \
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2 changes: 1 addition & 1 deletion src/CMakeLists.txt
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Expand Up @@ -237,7 +237,7 @@ add_library(r_433 STATIC
devices/thermopro_tp11.c
devices/thermopro_tp12.c
devices/thermopro_tp28b.c
devices/thermopro_tp829b.c
devices/thermopro_tp82xb.c
devices/thermopro_tx2.c
devices/thermopro_tx2c.c
devices/thermor.c
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244 changes: 244 additions & 0 deletions src/devices/thermopro_tp82xb.c
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/** @file
ThermoPro TP82xB Meat Thermometer probes.
Copyright (C) 2024 Bruno OCTAU (\@ProfBoc75)
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.
*/

#include "decoder.h"

/**
ThermoPro TP82xB Meat Thermometer probes.
TP829B, 4 Probes, simple Temperature:
- Issue #2961 open by \@AryehGielchinsky
- Product web page : https://buythermopro.com/product/tp829/
TP828P, 2 Probes, current Temperature, BBQ LO and HI temperatures:
- Issue #3082 open by Ryan Bray (\@rbray89)
- Product archive web page: http://web.archive.org/web/20240717222907/https://buythermopro.com/product/tp828w/
- FCCID : https://fccid.io/2AATP-TP828B
Flex decoder:
rtl_433 -X "n=tp829b,m=FSK_PCM,s=102,l=102,r=5500,preamble=552dd4" *.cu8 2>&1 | grep codes
TP829B codes: {164}082f2efeddeddedde8d2d2d2d2d20000000000000
TP828B codes: {164}772c2eceaa4f3eddeaa4d7b2d2d2d2d2d20000000
Data layout TP829B:
Byte Position 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
II UF 11 12 22 33 34 44 CC TT TT TT TT TT TT TT TT TT TT TT T
Sample d2 55 2d d4 08 2f 2e fe dd ed de dd e8 d2 d2 d2 d2 d2 00 00 00 00 00 00 0
- II: {8} Sensor ID,
- U: {4} Temp Unit Display, 0x0 for Celsius, 0x2 for Fahrenheit,
- F: {4} Unknown flags, always 0xF, to be confirmed as the battery low not identified,
- 111:{12} Temp probe 1, °C, offset 500, scale 10,
- 222:{12} Temp probe 2, °C, offset 500, scale 10,
- 333:{12} Temp probe 3, °C, offset 500, scale 10,
- 444:{12} Temp probe 4, °C, offset 500, scale 10,
- CC: {8} Checksum, Galois Bit Reflect Byte Reflect, gen 0x98, key 0x55, final XOR 0x00,
- TT: Trailed bytes, not used (always d2 d2 ...... 00 00 ).
Data layout TP828B:
Byte Position 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
II UF 11 11 11 11 12 22 22 22 22 CC TT TT TT TT TT TT TT TT T
PP PL LL HH HP PP LL LH HH
Sample d2 55 2d d4 77 2c 2e ce aa 4f 3e dd ea a4 d7 b2 d2 d2 d2 d2 d2 00 00 00 0
- II: {8} Sensor ID,
- U: {4} Temp Unit Display, 0x0 for Celsius, 0x2 for Fahrenheit,
- F: {4} Unknown flags, always 0xC, to be confirmed as the battery low not identified,
- 111/PPP:{12} Probe 1 Current Temp , °C, offset 500, scale 10,
- 111/LLL:{12} Probe 1 Target LO Temp, °C, offset 500, scale 10,
- 111/HHH:{12} Probe 1 Target HI Temp, °C, offset 500, scale 10,
- 222/PPP:{12} Probe 2 Current Temp, °C, offset 500, scale 10,
- 222/LLL:{12} Probe 2 Target LO Temp, °C, offset 500, scale 10,
- 222/HHH:{12} Probe 2 Target HI Temp, °C, offset 500, scale 10,
- CC: {8} Checksum, Galois Bit Reflect Byte Reflect, gen 0x98, key 0x16, final XOR 0xac,
- TT: Trailed bytes, not used (always d2 d2 ...... 00 00 ).
*/
static int thermopro_tp82xb_decode(r_device *decoder, bitbuffer_t *bitbuffer)
{
uint8_t const preamble_pattern[] = { // 0xd2, removed to increase success
0x55, 0x2d, 0xd4};
// Message len is 9 byte for tp829b and 12 byte for tp828b
uint8_t b[12];
uint8_t tp829b_reflect[8];
uint8_t tp828b_reflect[11];
uint8_t model = 0;
uint8_t ret = 0;
int checksum = 0;
int p = 0;

if (bitbuffer->num_rows > 1) {
decoder_logf(decoder, 1, __func__, "Too many rows: %d", bitbuffer->num_rows);
return DECODE_FAIL_SANITY;
}
int msg_len = bitbuffer->bits_per_row[0];

if (msg_len > 260) {
decoder_logf(decoder, 1, __func__, "Packet too long: %d bits", msg_len);
return DECODE_ABORT_LENGTH;
}

int offset = bitbuffer_search(bitbuffer, 0, 0, preamble_pattern, sizeof(preamble_pattern) * 8);

if (offset >= msg_len) {
decoder_log(decoder, 1, __func__, "Sync word not found");
return DECODE_ABORT_EARLY;
}

if ((msg_len - offset ) < 96 ) {
decoder_logf(decoder, 1, __func__, "Packet too short: %d bits", msg_len);
return DECODE_ABORT_LENGTH;
}

offset += sizeof(preamble_pattern) * 8;
bitbuffer_extract_bytes(bitbuffer, 0, offset, b, 12 * 8);

// Need to define the type of sensor, if b[9], b[10],b[11] = 0xd2, could be a tp829b, then need to control the checksum accordingly to confirm
// checksum is a Galois bit reflect and byte reflect, gen 0x98, key 0x55, final XOR 0x00
if ( b[9] == 0xd2 && b[10] == 0xd2 && b[10] == 0xd2) {
for (p = 7; p != -1; p += -1)
tp829b_reflect[7 - p] = b[p];
checksum = lfsr_digest8(tp829b_reflect, 8, 0x98, 0x55);
if (checksum != b[8]) {
decoder_logf(decoder, 1, __func__, "Checksum error, calculated %x, expected %x, not tp829b model", checksum, b[8]);
ret = DECODE_FAIL_MIC;
}
else

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model = 9; // ie tp829b
}

// Now test if model tp828b
if (model == 0) {
for (p = 10; p != -1; p += -1)
tp828b_reflect[10 - p] = b[p];
checksum = lfsr_digest8(tp828b_reflect, 11, 0x98, 0x16) ^ 0xac ;
if (checksum != b[11]) {
decoder_logf(decoder, 1, __func__, "Checksum error, calculated %x, expected %x, not tp828b model", checksum, b[11]);
ret = DECODE_FAIL_MIC;
}
else

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model = 8; // ie tp828b
}

// Decode_Fail_Mic
if (ret)
return ret;

// If model = tp828b
if (model == 8) {
decoder_log_bitrow(decoder, 2, __func__, b, 96, "MSG");

int id = b[0];
int display_u = (b[1] & 0xF0) >> 4;
int flags = b[1] & 0xF;
int p1_raw = b[2] << 4 | (b[3] & 0xF0) >> 4;
int p1_lo_raw = (b[3] & 0x0F) << 8 | b[4];
int p1_hi_raw = b[5] << 4 | (b[6] & 0xF0) >> 4;
int p2_raw = (b[6] & 0x0F) << 8 | b[7];
int p2_lo_raw = b[8] << 4 | (b[9] & 0xF0) >> 4;
int p2_hi_raw = (b[9] & 0x0F) << 8 | b[10];

float p1_temp = (p1_raw - 500) * 0.1f;
float p1_t_lo = (p1_lo_raw - 500) * 0.1f;
float p1_t_hi = (p1_hi_raw - 500) * 0.1f;
float p2_temp = (p2_raw - 500) * 0.1f;
float p2_t_lo = (p2_lo_raw - 500) * 0.1f;
float p2_t_hi = (p2_hi_raw - 500) * 0.1f;

/* clang-format off */
data_t *data = data_make(
"model", "", DATA_STRING, "ThermoPro-TP828b",
"id", "", DATA_FORMAT, "%02x", DATA_INT, id,
"display_u", "Display Unit", DATA_COND, display_u == 0x2, DATA_STRING, "Fahrenheit",
"display_u", "Display Unit", DATA_COND, display_u == 0x0, DATA_STRING, "Celsius",
"temperature_1_C", "Temperature 1", DATA_COND, p1_raw != 0xedd , DATA_FORMAT, "%.1f C", DATA_DOUBLE, p1_temp, // if 0xedd then no probe
"temperature_1_LO_C", "Temperature 1 LO", DATA_COND, p1_lo_raw != 0xeaa , DATA_FORMAT, "%.1f C", DATA_DOUBLE, p1_t_lo, // if 0xeaa then no LO
"temperature_1_HI_C", "Temperature 1 HI", DATA_FORMAT, "%.1f C", DATA_DOUBLE, p1_t_hi,
"temperature_2_C", "Temperature 2", DATA_COND, p2_raw != 0xedd , DATA_FORMAT, "%.1f C", DATA_DOUBLE, p2_temp, // if 0xedd then no probe
"temperature_2_LO_C", "Temperature 2 LO", DATA_COND, p2_lo_raw != 0xeaa , DATA_FORMAT, "%.1f C", DATA_DOUBLE, p2_t_lo, // if 0xeaa then no LO
"temperature_2_HI_C", "Temperature 2 HI", DATA_FORMAT, "%.1f C", DATA_DOUBLE, p2_t_hi,
"flags", "Flags", DATA_FORMAT, "%01x", DATA_INT, flags,
"mic", "Integrity", DATA_STRING, "CHECKSUM",
NULL);
/* clang-format on */

decoder_output_data(decoder, data);
return 1;
}

// If model = tp829b
else if (model == 9) {
decoder_log_bitrow(decoder, 2, __func__, b, 72, "MSG");

int id = b[0];
int display_u = (b[1] & 0xF0) >> 4;
int flags = b[1] & 0xF;
int p1_raw = b[2] << 4 | (b[3] & 0xF0) >> 4;
int p2_raw = (b[3] & 0x0F) << 8 | b[4];
int p3_raw = b[5] << 4 | (b[6] & 0xF0) >> 4;
int p4_raw = (b[6] & 0x0F) << 8 | b[7];
float p1_temp = (p1_raw - 500) * 0.1f;
float p2_temp = (p2_raw - 500) * 0.1f;
float p3_temp = (p3_raw - 500) * 0.1f;
float p4_temp = (p4_raw - 500) * 0.1f;

/* clang-format off */
data_t *data = data_make(
"model", "", DATA_STRING, "ThermoPro-TP829b",
"id", "", DATA_FORMAT, "%02x", DATA_INT, id,
"display_u", "Display Unit", DATA_COND, display_u == 0x2, DATA_STRING, "Fahrenheit",
"display_u", "Display Unit", DATA_COND, display_u == 0x0, DATA_STRING, "Celsius",
"temperature_1_C", "Temperature 1", DATA_COND, p1_raw != 0xedd , DATA_FORMAT, "%.1f C", DATA_DOUBLE, p1_temp, // if 0xedd then no probe
"temperature_2_C", "Temperature 2", DATA_COND, p2_raw != 0xedd , DATA_FORMAT, "%.1f C", DATA_DOUBLE, p2_temp, // if 0xedd then no probe
"temperature_3_C", "Temperature 3", DATA_COND, p3_raw != 0xedd , DATA_FORMAT, "%.1f C", DATA_DOUBLE, p3_temp, // if 0xedd then no probe
"temperature_4_C", "Temperature 4", DATA_COND, p4_raw != 0xedd , DATA_FORMAT, "%.1f C", DATA_DOUBLE, p4_temp, // if 0xedd then no probe
"flags", "Flags", DATA_FORMAT, "%01x", DATA_INT, flags,
"mic", "Integrity", DATA_STRING, "CHECKSUM",
NULL);
/* clang-format on */

decoder_output_data(decoder, data);
return 1;
}
return 0;

}

static char const *const output_fields[] = {
"model",
"id",
"display_u",
"temperature_1_C",
"temperature_2_C",
"temperature_3_C",
"temperature_4_C",
"temperature_1_LO_C",
"temperature_2_LO_C",
"temperature_1_HI_C",
"temperature_2_HI_C",
"flags",
"mic",
NULL,
};

r_device const thermopro_tp82xb = {
.name = "ThermoPro Meat Thermometer ",
.modulation = FSK_PULSE_PCM,
.short_width = 102,
.long_width = 102,
.reset_limit = 5500,
.decode_fn = &thermopro_tp82xb_decode,
.fields = output_fields,
};

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