mirror of
https://github.com/DarkFlippers/unleashed-firmware.git
synced 2024-12-21 12:21:49 +03:00
300 lines
11 KiB
C
300 lines
11 KiB
C
#include "lacrosse_tx141thbv2.h"
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#define TAG "WSProtocolLaCrosse_TX141THBv2"
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#define LACROSSE_TX141TH_BV2_BIT_COUNT 41
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/*
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* Help
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* https://github.com/merbanan/rtl_433/blob/master/src/devices/lacrosse_tx141x.c
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*
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* iiii iiii | bkcc tttt | tttt tttt | hhhh hhhh | cccc cccc | u - 41 bit
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* or
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* iiii iiii | bkcc tttt | tttt tttt | hhhh hhhh | cccc cccc | -40 bit
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* - i: identification; changes on battery switch
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* - c: lfsr_digest8_reflect;
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* - u: unknown;
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* - b: battery low; flag to indicate low battery voltage
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* - h: Humidity;
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* - t: Temperature; in °F as binary number with one decimal place + 50 °F offset
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* - n: Channel; Channel number 1 - 3
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*/
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static const SubGhzBlockConst ws_protocol_lacrosse_tx141thbv2_const = {
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.te_short = 208,
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.te_long = 417,
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.te_delta = 120,
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.min_count_bit_for_found = 40,
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};
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struct WSProtocolDecoderLaCrosse_TX141THBv2 {
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SubGhzProtocolDecoderBase base;
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SubGhzBlockDecoder decoder;
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WSBlockGeneric generic;
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uint16_t header_count;
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};
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struct WSProtocolEncoderLaCrosse_TX141THBv2 {
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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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LaCrosse_TX141THBv2DecoderStepReset = 0,
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LaCrosse_TX141THBv2DecoderStepCheckPreambule,
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LaCrosse_TX141THBv2DecoderStepSaveDuration,
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LaCrosse_TX141THBv2DecoderStepCheckDuration,
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} LaCrosse_TX141THBv2DecoderStep;
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const SubGhzProtocolDecoder ws_protocol_lacrosse_tx141thbv2_decoder = {
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.alloc = ws_protocol_decoder_lacrosse_tx141thbv2_alloc,
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.free = ws_protocol_decoder_lacrosse_tx141thbv2_free,
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.feed = ws_protocol_decoder_lacrosse_tx141thbv2_feed,
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.reset = ws_protocol_decoder_lacrosse_tx141thbv2_reset,
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.get_hash_data = ws_protocol_decoder_lacrosse_tx141thbv2_get_hash_data,
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.serialize = ws_protocol_decoder_lacrosse_tx141thbv2_serialize,
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.deserialize = ws_protocol_decoder_lacrosse_tx141thbv2_deserialize,
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.get_string = ws_protocol_decoder_lacrosse_tx141thbv2_get_string,
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};
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const SubGhzProtocolEncoder ws_protocol_lacrosse_tx141thbv2_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_lacrosse_tx141thbv2 = {
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.name = WS_PROTOCOL_LACROSSE_TX141THBV2_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_lacrosse_tx141thbv2_decoder,
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.encoder = &ws_protocol_lacrosse_tx141thbv2_encoder,
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};
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void* ws_protocol_decoder_lacrosse_tx141thbv2_alloc(SubGhzEnvironment* environment) {
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UNUSED(environment);
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WSProtocolDecoderLaCrosse_TX141THBv2* instance =
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malloc(sizeof(WSProtocolDecoderLaCrosse_TX141THBv2));
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instance->base.protocol = &ws_protocol_lacrosse_tx141thbv2;
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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_lacrosse_tx141thbv2_free(void* context) {
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furi_assert(context);
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WSProtocolDecoderLaCrosse_TX141THBv2* instance = context;
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free(instance);
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}
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void ws_protocol_decoder_lacrosse_tx141thbv2_reset(void* context) {
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furi_assert(context);
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WSProtocolDecoderLaCrosse_TX141THBv2* instance = context;
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instance->decoder.parser_step = LaCrosse_TX141THBv2DecoderStepReset;
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}
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static bool
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ws_protocol_lacrosse_tx141thbv2_check_crc(WSProtocolDecoderLaCrosse_TX141THBv2* instance) {
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if(!instance->decoder.decode_data) return false;
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uint64_t data = instance->decoder.decode_data;
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if(instance->decoder.decode_count_bit == LACROSSE_TX141TH_BV2_BIT_COUNT) {
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data >>= 1;
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}
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uint8_t msg[] = {data >> 32, data >> 24, data >> 16, data >> 8};
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uint8_t crc = subghz_protocol_blocks_lfsr_digest8_reflect(msg, 4, 0x31, 0xF4);
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return (crc == (data & 0xFF));
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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_lacrosse_tx141thbv2_remote_controller(WSBlockGeneric* instance) {
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uint64_t data = instance->data;
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if(instance->data_count_bit == LACROSSE_TX141TH_BV2_BIT_COUNT) {
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data >>= 1;
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}
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instance->id = data >> 32;
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instance->battery_low = (data >> 31) & 1;
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instance->btn = (data >> 30) & 1;
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instance->channel = ((data >> 28) & 0x03) + 1;
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instance->temp = ((float)((data >> 16) & 0x0FFF) - 500.0f) / 10.0f;
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instance->humidity = (data >> 8) & 0xFF;
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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 bool ws_protocol_decoder_lacrosse_tx141thbv2_add_bit(
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WSProtocolDecoderLaCrosse_TX141THBv2* instance,
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uint32_t te_last,
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uint32_t te_current) {
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furi_assert(instance);
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bool ret = false;
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if(DURATION_DIFF(
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te_last + te_current,
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ws_protocol_lacrosse_tx141thbv2_const.te_short +
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ws_protocol_lacrosse_tx141thbv2_const.te_long) <
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ws_protocol_lacrosse_tx141thbv2_const.te_delta * 2) {
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if(te_last > te_current) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 1);
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} else {
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subghz_protocol_blocks_add_bit(&instance->decoder, 0);
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}
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ret = true;
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}
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return ret;
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}
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void ws_protocol_decoder_lacrosse_tx141thbv2_feed(void* context, bool level, uint32_t duration) {
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furi_assert(context);
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WSProtocolDecoderLaCrosse_TX141THBv2* instance = context;
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switch(instance->decoder.parser_step) {
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case LaCrosse_TX141THBv2DecoderStepReset:
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if((level) &&
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(DURATION_DIFF(duration, ws_protocol_lacrosse_tx141thbv2_const.te_short * 4) <
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ws_protocol_lacrosse_tx141thbv2_const.te_delta * 2)) {
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instance->decoder.parser_step = LaCrosse_TX141THBv2DecoderStepCheckPreambule;
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instance->decoder.te_last = duration;
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instance->header_count = 0;
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}
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break;
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case LaCrosse_TX141THBv2DecoderStepCheckPreambule:
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if(level) {
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instance->decoder.te_last = duration;
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} else {
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if((DURATION_DIFF(
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instance->decoder.te_last,
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ws_protocol_lacrosse_tx141thbv2_const.te_short * 4) <
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ws_protocol_lacrosse_tx141thbv2_const.te_delta * 2) &&
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(DURATION_DIFF(duration, ws_protocol_lacrosse_tx141thbv2_const.te_short * 4) <
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ws_protocol_lacrosse_tx141thbv2_const.te_delta * 2)) {
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//Found preambule
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instance->header_count++;
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} else if(instance->header_count == 4) {
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if(ws_protocol_decoder_lacrosse_tx141thbv2_add_bit(
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instance, instance->decoder.te_last, duration)) {
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instance->decoder.decode_data = instance->decoder.decode_data & 1;
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instance->decoder.decode_count_bit = 1;
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instance->decoder.parser_step = LaCrosse_TX141THBv2DecoderStepSaveDuration;
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} else {
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instance->decoder.parser_step = LaCrosse_TX141THBv2DecoderStepReset;
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}
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} else {
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instance->decoder.parser_step = LaCrosse_TX141THBv2DecoderStepReset;
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}
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}
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break;
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case LaCrosse_TX141THBv2DecoderStepSaveDuration:
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if(level) {
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instance->decoder.te_last = duration;
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instance->decoder.parser_step = LaCrosse_TX141THBv2DecoderStepCheckDuration;
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} else {
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instance->decoder.parser_step = LaCrosse_TX141THBv2DecoderStepReset;
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}
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break;
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case LaCrosse_TX141THBv2DecoderStepCheckDuration:
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if(!level) {
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if(((DURATION_DIFF(
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instance->decoder.te_last,
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ws_protocol_lacrosse_tx141thbv2_const.te_short * 3) <
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ws_protocol_lacrosse_tx141thbv2_const.te_delta * 2) &&
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(DURATION_DIFF(duration, ws_protocol_lacrosse_tx141thbv2_const.te_short * 4) <
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ws_protocol_lacrosse_tx141thbv2_const.te_delta * 2))) {
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FURI_LOG_E(
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"WS",
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"%llX %d",
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instance->decoder.decode_data,
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instance->decoder.decode_count_bit);
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if((instance->decoder.decode_count_bit ==
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ws_protocol_lacrosse_tx141thbv2_const.min_count_bit_for_found) ||
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(instance->decoder.decode_count_bit == LACROSSE_TX141TH_BV2_BIT_COUNT)) {
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if(ws_protocol_lacrosse_tx141thbv2_check_crc(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_lacrosse_tx141thbv2_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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}
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instance->decoder.decode_data = 0;
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instance->decoder.decode_count_bit = 0;
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instance->header_count = 1;
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instance->decoder.parser_step = LaCrosse_TX141THBv2DecoderStepCheckPreambule;
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break;
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}
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} else if(ws_protocol_decoder_lacrosse_tx141thbv2_add_bit(
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instance, instance->decoder.te_last, duration)) {
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instance->decoder.parser_step = LaCrosse_TX141THBv2DecoderStepSaveDuration;
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} else {
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instance->decoder.parser_step = LaCrosse_TX141THBv2DecoderStepReset;
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}
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} else {
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instance->decoder.parser_step = LaCrosse_TX141THBv2DecoderStepReset;
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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_lacrosse_tx141thbv2_get_hash_data(void* context) {
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furi_assert(context);
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WSProtocolDecoderLaCrosse_TX141THBv2* 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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SubGhzProtocolStatus ws_protocol_decoder_lacrosse_tx141thbv2_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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WSProtocolDecoderLaCrosse_TX141THBv2* instance = context;
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return ws_block_generic_serialize(&instance->generic, flipper_format, preset);
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}
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SubGhzProtocolStatus ws_protocol_decoder_lacrosse_tx141thbv2_deserialize(
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void* context,
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FlipperFormat* flipper_format) {
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furi_assert(context);
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WSProtocolDecoderLaCrosse_TX141THBv2* instance = context;
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return ws_block_generic_deserialize_check_count_bit(
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&instance->generic,
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flipper_format,
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ws_protocol_lacrosse_tx141thbv2_const.min_count_bit_for_found);
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}
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void ws_protocol_decoder_lacrosse_tx141thbv2_get_string(void* context, FuriString* output) {
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furi_assert(context);
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WSProtocolDecoderLaCrosse_TX141THBv2* 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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