2022-03-03 09:48:56 +00:00
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#include "somfy_keytis.h"
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#include <lib/toolbox/manchester_decoder.h>
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#include "../blocks/const.h"
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#include "../blocks/decoder.h"
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#include "../blocks/encoder.h"
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#include "../blocks/generic.h"
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#include "../blocks/math.h"
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#define TAG "SubGhzProtocolSomfyKeytis"
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static const SubGhzBlockConst subghz_protocol_somfy_keytis_const = {
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.te_short = 640,
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.te_long = 1280,
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.te_delta = 250,
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.min_count_bit_for_found = 80,
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};
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struct SubGhzProtocolDecoderSomfyKeytis {
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SubGhzProtocolDecoderBase base;
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SubGhzBlockDecoder decoder;
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SubGhzBlockGeneric generic;
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uint16_t header_count;
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ManchesterState manchester_saved_state;
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uint32_t press_duration_counter;
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};
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struct SubGhzProtocolEncoderSomfyKeytis {
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SubGhzProtocolEncoderBase base;
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SubGhzProtocolBlockEncoder encoder;
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SubGhzBlockGeneric generic;
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};
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typedef enum {
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SomfyKeytisDecoderStepReset = 0,
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SomfyKeytisDecoderStepCheckPreambula,
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SomfyKeytisDecoderStepFoundPreambula,
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SomfyKeytisDecoderStepStartDecode,
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SomfyKeytisDecoderStepDecoderData,
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} SomfyKeytisDecoderStep;
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const SubGhzProtocolDecoder subghz_protocol_somfy_keytis_decoder = {
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.alloc = subghz_protocol_decoder_somfy_keytis_alloc,
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.free = subghz_protocol_decoder_somfy_keytis_free,
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.feed = subghz_protocol_decoder_somfy_keytis_feed,
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.reset = subghz_protocol_decoder_somfy_keytis_reset,
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.get_hash_data = subghz_protocol_decoder_somfy_keytis_get_hash_data,
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.serialize = subghz_protocol_decoder_somfy_keytis_serialize,
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.deserialize = subghz_protocol_decoder_somfy_keytis_deserialize,
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.get_string = subghz_protocol_decoder_somfy_keytis_get_string,
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};
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const SubGhzProtocolEncoder subghz_protocol_somfy_keytis_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 subghz_protocol_somfy_keytis = {
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.name = SUBGHZ_PROTOCOL_SOMFY_KEYTIS_NAME,
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.type = SubGhzProtocolTypeDynamic,
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.flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_868 | SubGhzProtocolFlag_AM |
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SubGhzProtocolFlag_Decodable,
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.decoder = &subghz_protocol_somfy_keytis_decoder,
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.encoder = &subghz_protocol_somfy_keytis_encoder,
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};
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void* subghz_protocol_decoder_somfy_keytis_alloc(SubGhzEnvironment* environment) {
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SubGhzProtocolDecoderSomfyKeytis* instance = malloc(sizeof(SubGhzProtocolDecoderSomfyKeytis));
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instance->base.protocol = &subghz_protocol_somfy_keytis;
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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 subghz_protocol_decoder_somfy_keytis_free(void* context) {
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furi_assert(context);
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SubGhzProtocolDecoderSomfyKeytis* instance = context;
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free(instance);
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}
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void subghz_protocol_decoder_somfy_keytis_reset(void* context) {
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furi_assert(context);
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SubGhzProtocolDecoderSomfyKeytis* instance = context;
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instance->decoder.parser_step = SomfyKeytisDecoderStepReset;
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manchester_advance(
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instance->manchester_saved_state,
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ManchesterEventReset,
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&instance->manchester_saved_state,
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NULL);
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}
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2022-03-16 09:18:48 +00:00
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/**
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* Сhecksum calculation.
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* @param data Вata for checksum calculation
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* @return CRC
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*/
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2022-03-03 09:48:56 +00:00
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static uint8_t subghz_protocol_somfy_keytis_crc(uint64_t data) {
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uint8_t crc = 0;
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data &= 0xFFF0FFFFFFFFFF;
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for(uint8_t i = 0; i < 56; i += 8) {
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crc = crc ^ data >> i ^ (data >> (i + 4));
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}
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return crc & 0xf;
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}
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void subghz_protocol_decoder_somfy_keytis_feed(void* context, bool level, uint32_t duration) {
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furi_assert(context);
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SubGhzProtocolDecoderSomfyKeytis* instance = context;
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ManchesterEvent event = ManchesterEventReset;
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switch(instance->decoder.parser_step) {
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case SomfyKeytisDecoderStepReset:
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if((level) && DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_short * 4) <
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subghz_protocol_somfy_keytis_const.te_delta * 4) {
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instance->decoder.parser_step = SomfyKeytisDecoderStepFoundPreambula;
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instance->header_count++;
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}
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break;
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case SomfyKeytisDecoderStepFoundPreambula:
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if((!level) && (DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_short * 4) <
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subghz_protocol_somfy_keytis_const.te_delta * 4)) {
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instance->decoder.parser_step = SomfyKeytisDecoderStepCheckPreambula;
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} else {
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instance->header_count = 0;
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instance->decoder.parser_step = SomfyKeytisDecoderStepReset;
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}
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break;
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case SomfyKeytisDecoderStepCheckPreambula:
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if(level) {
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if(DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_short * 4) <
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subghz_protocol_somfy_keytis_const.te_delta * 4) {
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instance->decoder.parser_step = SomfyKeytisDecoderStepFoundPreambula;
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instance->header_count++;
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} else if(
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(instance->header_count > 1) &&
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(DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_short * 7) <
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subghz_protocol_somfy_keytis_const.te_delta * 4)) {
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instance->decoder.parser_step = SomfyKeytisDecoderStepDecoderData;
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instance->decoder.decode_data = 0;
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instance->decoder.decode_count_bit = 0;
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instance->press_duration_counter = 0;
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manchester_advance(
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instance->manchester_saved_state,
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ManchesterEventReset,
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&instance->manchester_saved_state,
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NULL);
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manchester_advance(
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instance->manchester_saved_state,
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ManchesterEventLongHigh,
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&instance->manchester_saved_state,
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NULL);
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}
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}
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break;
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case SomfyKeytisDecoderStepDecoderData:
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if(!level) {
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if(DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_short) <
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subghz_protocol_somfy_keytis_const.te_delta) {
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event = ManchesterEventShortLow;
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} else if(
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DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_long) <
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subghz_protocol_somfy_keytis_const.te_delta) {
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event = ManchesterEventLongLow;
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} else if(
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duration >= (subghz_protocol_somfy_keytis_const.te_long +
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subghz_protocol_somfy_keytis_const.te_delta)) {
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if(instance->decoder.decode_count_bit ==
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subghz_protocol_somfy_keytis_const.min_count_bit_for_found) {
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//check crc
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uint64_t data_tmp = instance->generic.data ^ (instance->generic.data >> 8);
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if(((data_tmp >> 40) & 0xF) == subghz_protocol_somfy_keytis_crc(data_tmp)) {
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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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if(instance->base.callback)
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instance->base.callback(&instance->base, instance->base.context);
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}
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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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manchester_advance(
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instance->manchester_saved_state,
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ManchesterEventReset,
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&instance->manchester_saved_state,
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NULL);
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manchester_advance(
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instance->manchester_saved_state,
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ManchesterEventLongHigh,
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&instance->manchester_saved_state,
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NULL);
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instance->decoder.parser_step = SomfyKeytisDecoderStepReset;
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} else {
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instance->decoder.parser_step = SomfyKeytisDecoderStepReset;
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}
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} else {
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if(DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_short) <
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subghz_protocol_somfy_keytis_const.te_delta) {
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event = ManchesterEventShortHigh;
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} else if(
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DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_long) <
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subghz_protocol_somfy_keytis_const.te_delta) {
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event = ManchesterEventLongHigh;
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} else {
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instance->decoder.parser_step = SomfyKeytisDecoderStepReset;
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}
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}
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if(event != ManchesterEventReset) {
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bool data;
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bool data_ok = manchester_advance(
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instance->manchester_saved_state, event, &instance->manchester_saved_state, &data);
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if(data_ok) {
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if(instance->decoder.decode_count_bit < 56) {
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instance->decoder.decode_data = (instance->decoder.decode_data << 1) | data;
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} else {
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instance->press_duration_counter = (instance->press_duration_counter << 1) |
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data;
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}
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instance->decoder.decode_count_bit++;
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}
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}
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break;
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}
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}
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2022-03-16 09:18:48 +00:00
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/**
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* Analysis of received data
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* @param instance Pointer to a SubGhzBlockGeneric* instance
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2022-03-03 09:48:56 +00:00
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*/
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static void subghz_protocol_somfy_keytis_check_remote_controller(SubGhzBlockGeneric* instance) {
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//https://pushstack.wordpress.com/somfy-rts-protocol/
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/*
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* 604 us
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* /
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* | 2416us | 2416us | 2416us | 2416us | 4550 us | |
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*
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* +--------+ +--------+ +---...---+
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* + +--------+ +--------+ +--+XXXX...XXX+
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*
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* | hw. sync. | soft. | |
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* | | sync. | data |
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*
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*
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* encrypt | decrypt
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*
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* package 80 bit pdc key btn crc cnt serial
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*
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* 0xA453537C4B9855 C40019 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 C80026 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 CC0033 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 D00049 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 D4005C => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 D80063 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 DC0076 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 E00086 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 E40093 => 0xA 4 F 7 002F 37D3CD
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* 0xA453537C4B9855 E800AC => 0xA 4 F 7 002F 37D3CD
|
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|
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* 0xA453537C4B9855 EC00B9 => 0xA 4 F 7 002F 37D3CD
|
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|
* 0xA453537C4B9855 F000C3 => 0xA 4 F 7 002F 37D3CD
|
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* 0xA453537C4B9855 F400D6 => 0xA 4 F 7 002F 37D3CD
|
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|
* 0xA453537C4B9855 F800E9 => 0xA 4 F 7 002F 37D3CD
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|
* 0xA453537C4B9855 FC00FC => 0xA 4 F 7 002F 37D3CD
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|
* 0xA453537C4B9855 FC0102 => 0xA 4 F 7 002F 37D3CD
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|
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|
* 0xA453537C4B9855 FC0113 => 0xA 4 F 7 002F 37D3CD
|
|
|
|
|
|
* 0xA453537C4B9855 FC0120 => 0xA 4 F 7 002F 37D3CD
|
|
|
|
|
|
* ..........
|
|
|
|
|
|
* 0xA453537C4B9855 FC048F => 0xA 4 F 7 002F 37D3CD
|
|
|
|
|
|
*
|
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|
|
|
|
* Pdc: "Press Duration Counter" the total delay of the button is sent 72 parcels,
|
|
|
|
|
|
* pdc cnt4b cnt8b pdc_crc
|
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|
* C40019 => 11 0001 00 0000 00000001 1001
|
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|
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|
|
* C80026 => 11 0010 00 0000 00000010 0110
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|
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|
|
* CC0033 => 11 0011 00 0000 00000011 0011
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|
* D00049 => 11 0100 00 0000 00000100 1001
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|
* D4005C => 11 0101 00 0000 00000101 1100
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|
|
* D80063 => 11 0110 00 0000 00000110 0011
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|
* DC0076 => 11 0111 00 0000 00000111 0110
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|
* E00086 => 11 1000 00 0000 00001000 0110
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|
* E40093 => 11 1001 00 0000 00001001 0011
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|
|
* E800AC => 11 1010 00 0000 00001010 1100
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|
* EC00B9 => 11 1011 00 0000 00001011 1001
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|
* F000C3 => 11 1100 00 0000 00001100 0011
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|
* F400D6 => 11 1101 00 0000 00001101 0110
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|
* F800E9 => 11 1110 00 0000 00001110 1001
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|
|
* FC00FC => 11 1111 00 0000 00001111 1100
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|
|
* FC0102 => 11 1111 00 0000 00010000 0010
|
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|
|
* FC0113 => 11 1111 00 0000 00010001 0011
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|
|
* FC0120 => 11 1111 00 0000 00010010 0000
|
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|
|
|
*
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|
|
* Cnt4b: 4-bit counter changes from 1 to 15 then always equals 15
|
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|
|
* Cnt8b: 8-bit counter changes from 1 to 72 (0x48)
|
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|
|
|
|
* Ppdc_crc:
|
|
|
|
|
|
* uint8_t crc=0;
|
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|
|
|
|
* for(i=4; i<24; i+=4){
|
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|
|
|
|
* crc ^=(pdc>>i);
|
|
|
|
|
|
* }
|
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|
|
* return crc;
|
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|
* example: crc = 1^0^0^4^C = 9
|
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|
|
* 11, 00, 0000: const
|
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|
|
*
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|
* Key: “Encryption Key”, Most significant 4-bit are always 0xA, Least Significant bits is
|
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|
|
* a linear counter. In the Smoove Origin this counter is increased together with the
|
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|
|
|
|
* rolling code. But leaving this on a constant value also works. Gerardwr notes that
|
|
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|
|
|
* for some other types of remotes the MSB is not constant.
|
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|
|
|
|
* Btn: 4-bit Control codes, this indicates the button that is pressed
|
|
|
|
|
|
* CRC: 4-bit Checksum.
|
|
|
|
|
|
* Ctn: 16-bit rolling code (big-endian) increased with every button press.
|
|
|
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|
|
* Serial: 24-bit identifier of sending device (little-endian)
|
|
|
|
|
|
*
|
|
|
|
|
|
*
|
|
|
|
|
|
* Decrypt
|
|
|
|
|
|
*
|
|
|
|
|
|
* uint8_t frame[7];
|
|
|
|
|
|
* for (i=1; i < 7; i++) {
|
|
|
|
|
|
* frame[i] = frame[i] ^ frame[i-1];
|
|
|
|
|
|
* }
|
|
|
|
|
|
* or
|
|
|
|
|
|
* uint64 Decrypt = frame ^ (frame>>8);
|
|
|
|
|
|
*
|
|
|
|
|
|
* CRC
|
|
|
|
|
|
*
|
|
|
|
|
|
* uint8_t frame[7];
|
|
|
|
|
|
* for (i=0; i < 7; i++) {
|
|
|
|
|
|
* crc = crc ^ frame[i] ^ (frame[i] >> 4);
|
|
|
|
|
|
* }
|
|
|
|
|
|
* crc = crc & 0xf;
|
|
|
|
|
|
*
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
uint64_t data = instance->data ^ (instance->data >> 8);
|
|
|
|
|
|
instance->btn = (data >> 48) & 0xF;
|
|
|
|
|
|
instance->cnt = (data >> 24) & 0xFFFF;
|
|
|
|
|
|
instance->serial = data & 0xFFFFFF;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
2022-03-16 09:18:48 +00:00
|
|
|
|
/**
|
|
|
|
|
|
* Get button name.
|
|
|
|
|
|
* @param btn Button number, 4 bit
|
|
|
|
|
|
*/
|
2022-03-03 09:48:56 +00:00
|
|
|
|
static const char* subghz_protocol_somfy_keytis_get_name_button(uint8_t btn) {
|
|
|
|
|
|
const char* name_btn[0x10] = {
|
|
|
|
|
|
"Unknown",
|
|
|
|
|
|
"0x01",
|
|
|
|
|
|
"0x02",
|
|
|
|
|
|
"Prog",
|
|
|
|
|
|
"Key_1",
|
|
|
|
|
|
"0x05",
|
|
|
|
|
|
"0x06",
|
|
|
|
|
|
"0x07",
|
|
|
|
|
|
"0x08",
|
|
|
|
|
|
"0x09",
|
|
|
|
|
|
"0x0A",
|
|
|
|
|
|
"0x0B",
|
|
|
|
|
|
"0x0C",
|
|
|
|
|
|
"0x0D",
|
|
|
|
|
|
"0x0E",
|
|
|
|
|
|
"0x0F"};
|
|
|
|
|
|
return btn <= 0xf ? name_btn[btn] : name_btn[0];
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
uint8_t subghz_protocol_decoder_somfy_keytis_get_hash_data(void* context) {
|
|
|
|
|
|
furi_assert(context);
|
|
|
|
|
|
SubGhzProtocolDecoderSomfyKeytis* instance = context;
|
|
|
|
|
|
return subghz_protocol_blocks_get_hash_data(
|
|
|
|
|
|
&instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool subghz_protocol_decoder_somfy_keytis_serialize(
|
|
|
|
|
|
void* context,
|
|
|
|
|
|
FlipperFormat* flipper_format,
|
|
|
|
|
|
uint32_t frequency,
|
|
|
|
|
|
FuriHalSubGhzPreset preset) {
|
|
|
|
|
|
furi_assert(context);
|
|
|
|
|
|
SubGhzProtocolDecoderSomfyKeytis* instance = context;
|
|
|
|
|
|
bool res =
|
|
|
|
|
|
subghz_block_generic_serialize(&instance->generic, flipper_format, frequency, preset);
|
|
|
|
|
|
if(res && !flipper_format_write_uint32(
|
|
|
|
|
|
flipper_format, "Duration_Counter", &instance->press_duration_counter, 1)) {
|
|
|
|
|
|
FURI_LOG_E(TAG, "Unable to add Duration_Counter");
|
|
|
|
|
|
res = false;
|
|
|
|
|
|
}
|
|
|
|
|
|
return res;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool subghz_protocol_decoder_somfy_keytis_deserialize(void* context, FlipperFormat* flipper_format) {
|
|
|
|
|
|
furi_assert(context);
|
|
|
|
|
|
SubGhzProtocolDecoderSomfyKeytis* instance = context;
|
|
|
|
|
|
bool res = false;
|
|
|
|
|
|
do {
|
|
|
|
|
|
if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
|
|
|
|
|
|
FURI_LOG_E(TAG, "Deserialize error");
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
if(!flipper_format_rewind(flipper_format)) {
|
|
|
|
|
|
FURI_LOG_E(TAG, "Rewind error");
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
if(!flipper_format_read_uint32(
|
|
|
|
|
|
flipper_format,
|
|
|
|
|
|
"Duration_Counter",
|
|
|
|
|
|
(uint32_t*)&instance->press_duration_counter,
|
|
|
|
|
|
1)) {
|
|
|
|
|
|
FURI_LOG_E(TAG, "Missing Duration_Counter");
|
|
|
|
|
|
break;
|
|
|
|
|
|
}
|
|
|
|
|
|
res = true;
|
|
|
|
|
|
} while(false);
|
|
|
|
|
|
|
|
|
|
|
|
return res;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void subghz_protocol_decoder_somfy_keytis_get_string(void* context, string_t output) {
|
|
|
|
|
|
furi_assert(context);
|
|
|
|
|
|
SubGhzProtocolDecoderSomfyKeytis* instance = context;
|
|
|
|
|
|
|
|
|
|
|
|
subghz_protocol_somfy_keytis_check_remote_controller(&instance->generic);
|
|
|
|
|
|
|
|
|
|
|
|
string_cat_printf(
|
|
|
|
|
|
output,
|
|
|
|
|
|
"%s %db\r\n"
|
|
|
|
|
|
"%lX%08lX%06lX\r\n"
|
|
|
|
|
|
"Sn:0x%06lX \r\n"
|
|
|
|
|
|
"Cnt:0x%04X\r\n"
|
|
|
|
|
|
"Btn:%s\r\n",
|
|
|
|
|
|
|
|
|
|
|
|
instance->generic.protocol_name,
|
|
|
|
|
|
instance->generic.data_count_bit,
|
|
|
|
|
|
(uint32_t)(instance->generic.data >> 32),
|
|
|
|
|
|
(uint32_t)instance->generic.data,
|
|
|
|
|
|
instance->press_duration_counter,
|
|
|
|
|
|
instance->generic.serial,
|
|
|
|
|
|
instance->generic.cnt,
|
|
|
|
|
|
subghz_protocol_somfy_keytis_get_name_button(instance->generic.btn));
|
|
|
|
|
|
}
|
