297 lines
12 KiB
C
297 lines
12 KiB
C
#include "infactory.h"
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#define TAG "WSProtocolInfactory"
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/*
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* Help
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* https://github.com/merbanan/rtl_433/blob/master/src/devices/infactory.c
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*
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* Analysis using Genuino (see http://gitlab.com/hp-uno, e.g. uno_log_433):
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* Observed On-Off-Key (OOK) data pattern:
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* preamble syncPrefix data...(40 bit) syncPostfix
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* HHLL HHLL HHLL HHLL HLLLLLLLLLLLLLLLL (HLLLL HLLLLLLLL HLLLL HLLLLLLLL ....) HLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
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* Breakdown:
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* - four preamble pairs '1'/'0' each with a length of ca. 1000us
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* - syncPre, syncPost, data0, data1 have a '1' start pulse of ca. 500us
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* - syncPre pulse before dataPtr has a '0' pulse length of ca. 8000us
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* - data0 (0-bits) have then a '0' pulse length of ca. 2000us
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* - data1 (1-bits) have then a '0' pulse length of ca. 4000us
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* - syncPost after dataPtr has a '0' pulse length of ca. 16000us
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* This analysis is the reason for the new r_device definitions below.
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* NB: pulse_slicer_ppm does not use .gap_limit if .tolerance is set.
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*
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* Outdoor sensor, transmits temperature and humidity data
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* - inFactory NC-3982-913/NX-5817-902, Pearl (for FWS-686 station)
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* - nor-tec 73383 (weather station + sensor), Schou Company AS, Denmark
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* - DAY 73365 (weather station + sensor), Schou Company AS, Denmark
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* Known brand names: inFactory, nor-tec, GreenBlue, DAY. Manufacturer in China.
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* Transmissions includes an id. Every 60 seconds the sensor transmits 6 packets:
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* 0000 1111 | 0011 0000 | 0101 1100 | 1110 0111 | 0110 0001
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* iiii iiii | cccc ub?? | tttt tttt | tttt hhhh | hhhh ??nn
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* - i: identification; changes on battery switch
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* - c: CRC-4; CCITT checksum, see below for computation specifics
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* - u: unknown; (sometimes set at power-on, but not always)
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* - b: battery low; flag to indicate low battery voltage
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* - h: Humidity; BCD-encoded, each nibble is one digit, 'A0' means 100%rH
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* - t: Temperature; in °F as binary number with one decimal place + 90 °F offset
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* - n: Channel; Channel number 1 - 3
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*
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*/
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static const SubGhzBlockConst ws_protocol_infactory_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 = 40,
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};
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struct WSProtocolDecoderInfactory {
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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 WSProtocolEncoderInfactory {
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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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InfactoryDecoderStepReset = 0,
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InfactoryDecoderStepCheckPreambule,
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InfactoryDecoderStepSaveDuration,
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InfactoryDecoderStepCheckDuration,
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} InfactoryDecoderStep;
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const SubGhzProtocolDecoder ws_protocol_infactory_decoder = {
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.alloc = ws_protocol_decoder_infactory_alloc,
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.free = ws_protocol_decoder_infactory_free,
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.feed = ws_protocol_decoder_infactory_feed,
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.reset = ws_protocol_decoder_infactory_reset,
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.get_hash_data = ws_protocol_decoder_infactory_get_hash_data,
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.serialize = ws_protocol_decoder_infactory_serialize,
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.deserialize = ws_protocol_decoder_infactory_deserialize,
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.get_string = ws_protocol_decoder_infactory_get_string,
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};
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const SubGhzProtocolEncoder ws_protocol_infactory_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_infactory = {
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.name = WS_PROTOCOL_INFACTORY_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_infactory_decoder,
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.encoder = &ws_protocol_infactory_encoder,
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};
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void* ws_protocol_decoder_infactory_alloc(SubGhzEnvironment* environment) {
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UNUSED(environment);
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WSProtocolDecoderInfactory* instance = malloc(sizeof(WSProtocolDecoderInfactory));
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instance->base.protocol = &ws_protocol_infactory;
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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_infactory_free(void* context) {
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furi_assert(context);
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WSProtocolDecoderInfactory* instance = context;
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free(instance);
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}
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void ws_protocol_decoder_infactory_reset(void* context) {
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furi_assert(context);
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WSProtocolDecoderInfactory* instance = context;
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instance->decoder.parser_step = InfactoryDecoderStepReset;
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}
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static bool ws_protocol_infactory_check_crc(WSProtocolDecoderInfactory* instance) {
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uint8_t msg[] = {
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instance->decoder.decode_data >> 32,
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(((instance->decoder.decode_data >> 24) & 0x0F) | (instance->decoder.decode_data & 0x0F)
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<< 4),
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instance->decoder.decode_data >> 16,
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instance->decoder.decode_data >> 8,
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instance->decoder.decode_data};
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uint8_t crc =
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subghz_protocol_blocks_crc4(msg, 4, 0x13, 0); // Koopmann 0x9, CCITT-4; FP-4; ITU-T G.704
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crc ^= msg[4] >> 4; // last nibble is only XORed
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return (crc == ((instance->decoder.decode_data >> 28) & 0x0F));
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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_infactory_remote_controller(WSBlockGeneric* instance) {
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instance->id = instance->data >> 32;
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instance->battery_low = (instance->data >> 26) & 1;
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instance->btn = WS_NO_BTN;
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instance->temp = ws_block_generic_fahrenheit_to_celsius(
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((float)((instance->data >> 12) & 0x0FFF) - 900.0f) / 10.0f);
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instance->humidity =
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(((instance->data >> 8) & 0x0F) * 10) + ((instance->data >> 4) & 0x0F); // BCD, 'A0'=100%rH
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instance->channel = instance->data & 0x03;
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}
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void ws_protocol_decoder_infactory_feed(void* context, bool level, uint32_t duration) {
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furi_assert(context);
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WSProtocolDecoderInfactory* instance = context;
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switch(instance->decoder.parser_step) {
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case InfactoryDecoderStepReset:
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if((level) && (DURATION_DIFF(duration, ws_protocol_infactory_const.te_short * 2) <
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ws_protocol_infactory_const.te_delta * 2)) {
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instance->decoder.parser_step = InfactoryDecoderStepCheckPreambule;
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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 InfactoryDecoderStepCheckPreambule:
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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(instance->decoder.te_last, ws_protocol_infactory_const.te_short * 2) <
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ws_protocol_infactory_const.te_delta * 2) &&
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(DURATION_DIFF(duration, ws_protocol_infactory_const.te_short * 2) <
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ws_protocol_infactory_const.te_delta * 2)) {
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//Found preambule
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instance->header_count++;
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} else if(
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(DURATION_DIFF(instance->decoder.te_last, ws_protocol_infactory_const.te_short) <
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ws_protocol_infactory_const.te_delta) &&
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(DURATION_DIFF(duration, ws_protocol_infactory_const.te_short * 16) <
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ws_protocol_infactory_const.te_delta * 8)) {
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//Found syncPrefix
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if(instance->header_count > 3) {
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instance->decoder.parser_step = InfactoryDecoderStepSaveDuration;
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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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} else {
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instance->decoder.parser_step = InfactoryDecoderStepReset;
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}
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}
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break;
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case InfactoryDecoderStepSaveDuration:
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if(level) {
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instance->decoder.te_last = duration;
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instance->decoder.parser_step = InfactoryDecoderStepCheckDuration;
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} else {
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instance->decoder.parser_step = InfactoryDecoderStepReset;
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}
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break;
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case InfactoryDecoderStepCheckDuration:
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if(!level) {
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if(duration >= ((uint32_t)ws_protocol_infactory_const.te_short * 30)) {
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//Found syncPostfix
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if((instance->decoder.decode_count_bit ==
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ws_protocol_infactory_const.min_count_bit_for_found) &&
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ws_protocol_infactory_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_infactory_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->decoder.parser_step = InfactoryDecoderStepReset;
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break;
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} else if(
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(DURATION_DIFF(instance->decoder.te_last, ws_protocol_infactory_const.te_short) <
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ws_protocol_infactory_const.te_delta) &&
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(DURATION_DIFF(duration, ws_protocol_infactory_const.te_long) <
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ws_protocol_infactory_const.te_delta * 2)) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 0);
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instance->decoder.parser_step = InfactoryDecoderStepSaveDuration;
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} else if(
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(DURATION_DIFF(instance->decoder.te_last, ws_protocol_infactory_const.te_short) <
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ws_protocol_infactory_const.te_delta) &&
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(DURATION_DIFF(duration, ws_protocol_infactory_const.te_long * 2) <
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ws_protocol_infactory_const.te_delta * 4)) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 1);
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instance->decoder.parser_step = InfactoryDecoderStepSaveDuration;
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} else {
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instance->decoder.parser_step = InfactoryDecoderStepReset;
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}
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} else {
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instance->decoder.parser_step = InfactoryDecoderStepReset;
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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_infactory_get_hash_data(void* context) {
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furi_assert(context);
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WSProtocolDecoderInfactory* 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_infactory_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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WSProtocolDecoderInfactory* 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_infactory_deserialize(void* context, FlipperFormat* flipper_format) {
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furi_assert(context);
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WSProtocolDecoderInfactory* 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_infactory_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_infactory_get_string(void* context, FuriString* output) {
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furi_assert(context);
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WSProtocolDecoderInfactory* 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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