260 lines
9.6 KiB
C
260 lines
9.6 KiB
C
#include "thermopro_tx4.h"
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#define TAG "WSProtocolThermoPRO_TX4"
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/*
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* Help
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* https://github.com/merbanan/rtl_433/blob/master/src/devices/thermopro_tx2.c
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*
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* The sensor sends 37 bits 6 times, before the first packet there is a sync pulse.
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* The packets are ppm modulated (distance coding) with a pulse of ~500 us
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* followed by a short gap of ~2000 us for a 0 bit or a long ~4000 us gap for a
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* 1 bit, the sync gap is ~9000 us.
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* The data is grouped in 9 nibbles
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* [type] [id0] [id1] [flags] [temp0] [temp1] [temp2] [humi0] [humi1]
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* - type: 4 bit fixed 1001 (9) or 0110 (5)
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* - id: 8 bit a random id that is generated when the sensor starts, could include battery status
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* the same batteries often generate the same id
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* - flags(3): is 1 when the battery is low, otherwise 0 (ok)
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* - flags(2): is 1 when the sensor sends a reading when pressing the button on the sensor
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* - flags(1,0): the channel number that can be set by the sensor (1, 2, 3, X)
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* - temp: 12 bit signed scaled by 10
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* - humi: 8 bit always 11001100 (0xCC) if no humidity sensor is available
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*
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*/
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#define THERMO_PRO_TX4_TYPE_1 0b1001
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#define THERMO_PRO_TX4_TYPE_2 0b0110
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static const SubGhzBlockConst ws_protocol_thermopro_tx4_const = {
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.te_short = 500,
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.te_long = 2000,
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.te_delta = 150,
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.min_count_bit_for_found = 37,
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};
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struct WSProtocolDecoderThermoPRO_TX4 {
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SubGhzProtocolDecoderBase base;
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SubGhzBlockDecoder decoder;
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WSBlockGeneric generic;
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};
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struct WSProtocolEncoderThermoPRO_TX4 {
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SubGhzProtocolEncoderBase base;
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SubGhzProtocolBlockEncoder encoder;
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WSBlockGeneric generic;
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};
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typedef enum {
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ThermoPRO_TX4DecoderStepReset = 0,
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ThermoPRO_TX4DecoderStepSaveDuration,
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ThermoPRO_TX4DecoderStepCheckDuration,
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} ThermoPRO_TX4DecoderStep;
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const SubGhzProtocolDecoder ws_protocol_thermopro_tx4_decoder = {
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.alloc = ws_protocol_decoder_thermopro_tx4_alloc,
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.free = ws_protocol_decoder_thermopro_tx4_free,
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.feed = ws_protocol_decoder_thermopro_tx4_feed,
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.reset = ws_protocol_decoder_thermopro_tx4_reset,
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.get_hash_data = ws_protocol_decoder_thermopro_tx4_get_hash_data,
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.serialize = ws_protocol_decoder_thermopro_tx4_serialize,
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.deserialize = ws_protocol_decoder_thermopro_tx4_deserialize,
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.get_string = ws_protocol_decoder_thermopro_tx4_get_string,
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};
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const SubGhzProtocolEncoder ws_protocol_thermopro_tx4_encoder = {
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.alloc = NULL,
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.free = NULL,
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.deserialize = NULL,
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.stop = NULL,
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.yield = NULL,
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};
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const SubGhzProtocol ws_protocol_thermopro_tx4 = {
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.name = WS_PROTOCOL_THERMOPRO_TX4_NAME,
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.type = SubGhzProtocolWeatherStation,
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.flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_315 | SubGhzProtocolFlag_868 |
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SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable,
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.decoder = &ws_protocol_thermopro_tx4_decoder,
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.encoder = &ws_protocol_thermopro_tx4_encoder,
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};
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void* ws_protocol_decoder_thermopro_tx4_alloc(SubGhzEnvironment* environment) {
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UNUSED(environment);
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WSProtocolDecoderThermoPRO_TX4* instance = malloc(sizeof(WSProtocolDecoderThermoPRO_TX4));
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instance->base.protocol = &ws_protocol_thermopro_tx4;
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instance->generic.protocol_name = instance->base.protocol->name;
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return instance;
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}
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void ws_protocol_decoder_thermopro_tx4_free(void* context) {
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furi_assert(context);
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WSProtocolDecoderThermoPRO_TX4* instance = context;
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free(instance);
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}
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void ws_protocol_decoder_thermopro_tx4_reset(void* context) {
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furi_assert(context);
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WSProtocolDecoderThermoPRO_TX4* instance = context;
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instance->decoder.parser_step = ThermoPRO_TX4DecoderStepReset;
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}
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static bool ws_protocol_thermopro_tx4_check(WSProtocolDecoderThermoPRO_TX4* instance) {
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uint8_t type = instance->decoder.decode_data >> 33;
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if((type == THERMO_PRO_TX4_TYPE_1) || (type == THERMO_PRO_TX4_TYPE_2)) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* Analysis of received data
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* @param instance Pointer to a WSBlockGeneric* instance
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*/
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static void ws_protocol_thermopro_tx4_remote_controller(WSBlockGeneric* instance) {
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instance->id = (instance->data >> 25) & 0xFF;
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instance->battery_low = (instance->data >> 24) & 1;
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instance->btn = (instance->data >> 23) & 1;
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instance->channel = ((instance->data >> 21) & 0x03) + 1;
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if(!((instance->data >> 20) & 1)) {
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instance->temp = (float)((instance->data >> 9) & 0x07FF) / 10.0f;
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} else {
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instance->temp = (float)((~(instance->data >> 9) & 0x07FF) + 1) / -10.0f;
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}
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instance->humidity = (instance->data >> 1) & 0xFF;
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}
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void ws_protocol_decoder_thermopro_tx4_feed(void* context, bool level, uint32_t duration) {
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furi_assert(context);
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WSProtocolDecoderThermoPRO_TX4* instance = context;
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switch(instance->decoder.parser_step) {
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case ThermoPRO_TX4DecoderStepReset:
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if((!level) && (DURATION_DIFF(duration, ws_protocol_thermopro_tx4_const.te_short * 18) <
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ws_protocol_thermopro_tx4_const.te_delta * 10)) {
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//Found sync
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instance->decoder.parser_step = ThermoPRO_TX4DecoderStepSaveDuration;
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instance->decoder.decode_data = 0;
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instance->decoder.decode_count_bit = 0;
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}
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break;
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case ThermoPRO_TX4DecoderStepSaveDuration:
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if(level) {
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instance->decoder.te_last = duration;
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instance->decoder.parser_step = ThermoPRO_TX4DecoderStepCheckDuration;
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} else {
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instance->decoder.parser_step = ThermoPRO_TX4DecoderStepReset;
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}
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break;
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case ThermoPRO_TX4DecoderStepCheckDuration:
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if(!level) {
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if(DURATION_DIFF(duration, ws_protocol_thermopro_tx4_const.te_short * 18) <
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ws_protocol_thermopro_tx4_const.te_delta * 10) {
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//Found sync
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instance->decoder.parser_step = ThermoPRO_TX4DecoderStepReset;
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if((instance->decoder.decode_count_bit ==
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ws_protocol_thermopro_tx4_const.min_count_bit_for_found) &&
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ws_protocol_thermopro_tx4_check(instance)) {
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instance->generic.data = instance->decoder.decode_data;
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instance->generic.data_count_bit = instance->decoder.decode_count_bit;
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ws_protocol_thermopro_tx4_remote_controller(&instance->generic);
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if(instance->base.callback)
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instance->base.callback(&instance->base, instance->base.context);
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instance->decoder.parser_step = ThermoPRO_TX4DecoderStepCheckDuration;
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}
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instance->decoder.decode_data = 0;
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instance->decoder.decode_count_bit = 0;
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break;
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} else if(
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(DURATION_DIFF(
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instance->decoder.te_last, ws_protocol_thermopro_tx4_const.te_short) <
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ws_protocol_thermopro_tx4_const.te_delta) &&
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(DURATION_DIFF(duration, ws_protocol_thermopro_tx4_const.te_long) <
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ws_protocol_thermopro_tx4_const.te_delta * 2)) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 0);
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instance->decoder.parser_step = ThermoPRO_TX4DecoderStepSaveDuration;
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} else if(
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(DURATION_DIFF(
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instance->decoder.te_last, ws_protocol_thermopro_tx4_const.te_short) <
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ws_protocol_thermopro_tx4_const.te_delta) &&
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(DURATION_DIFF(duration, ws_protocol_thermopro_tx4_const.te_long * 2) <
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ws_protocol_thermopro_tx4_const.te_delta * 4)) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 1);
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instance->decoder.parser_step = ThermoPRO_TX4DecoderStepSaveDuration;
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} else {
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instance->decoder.parser_step = ThermoPRO_TX4DecoderStepReset;
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}
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} else {
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instance->decoder.parser_step = ThermoPRO_TX4DecoderStepReset;
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}
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break;
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}
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}
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uint8_t ws_protocol_decoder_thermopro_tx4_get_hash_data(void* context) {
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furi_assert(context);
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WSProtocolDecoderThermoPRO_TX4* instance = context;
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return subghz_protocol_blocks_get_hash_data(
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&instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
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}
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bool ws_protocol_decoder_thermopro_tx4_serialize(
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void* context,
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FlipperFormat* flipper_format,
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SubGhzRadioPreset* preset) {
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furi_assert(context);
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WSProtocolDecoderThermoPRO_TX4* instance = context;
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return ws_block_generic_serialize(&instance->generic, flipper_format, preset);
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}
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bool ws_protocol_decoder_thermopro_tx4_deserialize(void* context, FlipperFormat* flipper_format) {
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furi_assert(context);
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WSProtocolDecoderThermoPRO_TX4* instance = context;
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bool ret = false;
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do {
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if(!ws_block_generic_deserialize(&instance->generic, flipper_format)) {
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break;
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}
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if(instance->generic.data_count_bit !=
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ws_protocol_thermopro_tx4_const.min_count_bit_for_found) {
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FURI_LOG_E(TAG, "Wrong number of bits in key");
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break;
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}
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ret = true;
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} while(false);
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return ret;
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}
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void ws_protocol_decoder_thermopro_tx4_get_string(void* context, FuriString* output) {
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furi_assert(context);
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WSProtocolDecoderThermoPRO_TX4* instance = context;
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furi_string_printf(
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output,
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"%s %dbit\r\n"
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"Key:0x%lX%08lX\r\n"
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"Sn:0x%lX Ch:%d Bat:%d\r\n"
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"Temp:%3.1f C Hum:%d%%",
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instance->generic.protocol_name,
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instance->generic.data_count_bit,
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(uint32_t)(instance->generic.data >> 32),
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(uint32_t)(instance->generic.data),
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instance->generic.id,
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instance->generic.channel,
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instance->generic.battery_low,
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(double)instance->generic.temp,
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instance->generic.humidity);
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}
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