#include "somfy_keytis.h" #include #include "../blocks/const.h" #include "../blocks/decoder.h" #include "../blocks/encoder.h" #include "../blocks/generic.h" #include "../blocks/math.h" #define TAG "SubGhzProtocolSomfyKeytis" static const SubGhzBlockConst subghz_protocol_somfy_keytis_const = { .te_short = 640, .te_long = 1280, .te_delta = 250, .min_count_bit_for_found = 80, }; struct SubGhzProtocolDecoderSomfyKeytis { SubGhzProtocolDecoderBase base; SubGhzBlockDecoder decoder; SubGhzBlockGeneric generic; uint16_t header_count; ManchesterState manchester_saved_state; uint32_t press_duration_counter; }; struct SubGhzProtocolEncoderSomfyKeytis { SubGhzProtocolEncoderBase base; SubGhzProtocolBlockEncoder encoder; SubGhzBlockGeneric generic; }; typedef enum { SomfyKeytisDecoderStepReset = 0, SomfyKeytisDecoderStepCheckPreambula, SomfyKeytisDecoderStepFoundPreambula, SomfyKeytisDecoderStepStartDecode, SomfyKeytisDecoderStepDecoderData, } SomfyKeytisDecoderStep; const SubGhzProtocolDecoder subghz_protocol_somfy_keytis_decoder = { .alloc = subghz_protocol_decoder_somfy_keytis_alloc, .free = subghz_protocol_decoder_somfy_keytis_free, .feed = subghz_protocol_decoder_somfy_keytis_feed, .reset = subghz_protocol_decoder_somfy_keytis_reset, .get_hash_data = subghz_protocol_decoder_somfy_keytis_get_hash_data, .serialize = subghz_protocol_decoder_somfy_keytis_serialize, .deserialize = subghz_protocol_decoder_somfy_keytis_deserialize, .get_string = subghz_protocol_decoder_somfy_keytis_get_string, }; const SubGhzProtocol subghz_protocol_somfy_keytis = { .name = SUBGHZ_PROTOCOL_SOMFY_KEYTIS_NAME, .type = SubGhzProtocolTypeDynamic, .flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_868 | SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable | SubGhzProtocolFlag_Save | SubGhzProtocolFlag_Send, .decoder = &subghz_protocol_somfy_keytis_decoder, .encoder = &subghz_protocol_somfy_keytis_encoder, }; const SubGhzProtocolEncoder subghz_protocol_somfy_keytis_encoder = { .alloc = subghz_protocol_encoder_somfy_keytis_alloc, .free = subghz_protocol_encoder_somfy_keytis_free, .deserialize = subghz_protocol_encoder_somfy_keytis_deserialize, .stop = subghz_protocol_encoder_somfy_keytis_stop, .yield = subghz_protocol_encoder_somfy_keytis_yield, }; void* subghz_protocol_encoder_somfy_keytis_alloc(SubGhzEnvironment* environment) { UNUSED(environment); SubGhzProtocolEncoderSomfyKeytis* instance = malloc(sizeof(SubGhzProtocolEncoderSomfyKeytis)); instance->base.protocol = &subghz_protocol_somfy_keytis; instance->generic.protocol_name = instance->base.protocol->name; instance->encoder.repeat = 10; instance->encoder.size_upload = 512; instance->encoder.upload = malloc(instance->encoder.size_upload * sizeof(LevelDuration)); instance->encoder.is_running = false; return instance; } void* subghz_protocol_decoder_somfy_keytis_alloc(SubGhzEnvironment* environment) { UNUSED(environment); SubGhzProtocolDecoderSomfyKeytis* instance = malloc(sizeof(SubGhzProtocolDecoderSomfyKeytis)); instance->base.protocol = &subghz_protocol_somfy_keytis; instance->generic.protocol_name = instance->base.protocol->name; return instance; } void subghz_protocol_encoder_somfy_keytis_free(void* context) { furi_assert(context); SubGhzProtocolEncoderSomfyKeytis* instance = context; free(instance->encoder.upload); free(instance); } void subghz_protocol_decoder_somfy_keytis_free(void* context) { furi_assert(context); SubGhzProtocolDecoderSomfyKeytis* instance = context; free(instance); } void subghz_protocol_decoder_somfy_keytis_reset(void* context) { furi_assert(context); SubGhzProtocolDecoderSomfyKeytis* instance = context; instance->decoder.parser_step = SomfyKeytisDecoderStepReset; manchester_advance( instance->manchester_saved_state, ManchesterEventReset, &instance->manchester_saved_state, NULL); } static bool subghz_protocol_somfy_keytis_gen_data(SubGhzProtocolEncoderSomfyKeytis* instance, uint8_t btn) { UNUSED(btn); uint64_t data = instance->generic.data ^ (instance->generic.data >> 8); instance->generic.btn = (data >> 48) & 0xF; instance->generic.cnt = (data >> 24) & 0xFFFF; instance->generic.serial = data & 0xFFFFFF; if(instance->generic.cnt < 0xFFFF) { instance->generic.cnt++; } else if(instance->generic.cnt >= 0xFFFF) { instance->generic.cnt = 0; } uint8_t frame[10]; frame[0] = (0xA << 4) | instance->generic.btn; frame[1] = 0xF << 4; frame[2] = instance->generic.cnt >> 8; frame[3] = instance->generic.cnt; frame[4] = instance->generic.serial >> 16; frame[5] = instance->generic.serial >> 8; frame[6] = instance->generic.serial; frame[7] = 0xC4; frame[8] = 0x00; frame[9] = 0x19; uint8_t checksum = 0; for(uint8_t i = 0; i < 7; i++) { checksum = checksum ^ frame[i] ^ (frame[i] >> 4); } checksum &= 0xF; frame[1] |= checksum; for(uint8_t i = 1; i < 7; i++) { frame[i] ^= frame[i - 1]; } data = 0; for(uint8_t i = 0; i < 7; ++i) { data <<= 8; data |= frame[i]; } instance->generic.data = data; data = 0; for(uint8_t i = 7; i < 10; ++i) { data <<= 8; data |= frame[i]; } instance->generic.data_2 = data; return true; } bool subghz_protocol_somfy_keytis_create_data( void* context, FlipperFormat* flipper_format, uint32_t serial, uint8_t btn, uint16_t cnt, SubGhzRadioPreset* preset) { furi_assert(context); SubGhzProtocolEncoderSomfyKeytis* instance = context; instance->generic.serial = serial; instance->generic.cnt = cnt; instance->generic.data_count_bit = 80; bool res = subghz_protocol_somfy_keytis_gen_data(instance, btn); if(res) { res = subghz_block_generic_serialize(&instance->generic, flipper_format, preset); } return res; } /** * Generating an upload from data. * @param instance Pointer to a SubGhzProtocolEncoderKeeloq instance * @return true On success */ static bool subghz_protocol_encoder_somfy_keytis_get_upload( SubGhzProtocolEncoderSomfyKeytis* instance, uint8_t btn) { furi_assert(instance); //gen new key if(subghz_protocol_somfy_keytis_gen_data(instance, btn)) { //ToDo if you need to add a callback to automatically update the data on the display } else { return false; } size_t index = 0; //Send header //Wake up instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)9415); // 1 instance->encoder.upload[index++] = level_duration_make(false, (uint32_t)89565); // 0 //Hardware sync for(uint8_t i = 0; i < 12; ++i) { instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short * 4); // 1 instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short * 4); // 0 } //Software sync instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)4550); // 1 instance->encoder.upload[index++] = level_duration_make(false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 //Send key data MSB manchester for(uint8_t i = instance->generic.data_count_bit - 24; i > 0; i--) { if(bit_read(instance->generic.data, i - 1)) { if(instance->encoder.upload[index - 1].level == LEVEL_DURATION_LEVEL_LOW) { instance->encoder.upload[index - 1].duration *= 2; // 00 instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 1 } else { instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 1 } } else { if(instance->encoder.upload[index - 1].level == LEVEL_DURATION_LEVEL_HIGH) { instance->encoder.upload[index - 1].duration *= 2; // 11 instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 } else { instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 1 instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 } } } for(uint8_t i = 24; i > 0; i--) { if(bit_read(instance->generic.data_2, i - 1)) { if(instance->encoder.upload[index - 1].level == LEVEL_DURATION_LEVEL_LOW) { instance->encoder.upload[index - 1].duration *= 2; // 00 instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 1 } else { instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 1 } } else { if(instance->encoder.upload[index - 1].level == LEVEL_DURATION_LEVEL_HIGH) { instance->encoder.upload[index - 1].duration *= 2; // 11 instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 } else { instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 1 instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 } } } for(uint8_t i = 0; i < 2; ++i) { //Hardware sync for(uint8_t i = 0; i < 6; ++i) { instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short * 4); // 1 instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short * 4); // 0 } //Software sync instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)4550); // 1 instance->encoder.upload[index++] = level_duration_make(false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 //Send key data MSB manchester for(uint8_t i = instance->generic.data_count_bit - 24; i > 0; i--) { if(bit_read(instance->generic.data, i - 1)) { if(instance->encoder.upload[index - 1].level == LEVEL_DURATION_LEVEL_LOW) { instance->encoder.upload[index - 1].duration *= 2; // 00 instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 1 } else { instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 1 } } else { if(instance->encoder.upload[index - 1].level == LEVEL_DURATION_LEVEL_HIGH) { instance->encoder.upload[index - 1].duration *= 2; // 11 instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 } else { instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 1 instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 } } } for(uint8_t i = 24; i > 0; i--) { if(bit_read(instance->generic.data_2, i - 1)) { if(instance->encoder.upload[index - 1].level == LEVEL_DURATION_LEVEL_LOW) { instance->encoder.upload[index - 1].duration *= 2; // 00 instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 1 } else { instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 1 } } else { if(instance->encoder.upload[index - 1].level == LEVEL_DURATION_LEVEL_HIGH) { instance->encoder.upload[index - 1].duration *= 2; // 11 instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 } else { instance->encoder.upload[index++] = level_duration_make( true, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 1 instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); // 0 } } } //Inter-frame silence instance->encoder.upload[index++] = level_duration_make(false, (uint32_t)subghz_protocol_somfy_keytis_const.te_short); } //Inter-frame silence instance->encoder.upload[index++] = level_duration_make(false, (uint32_t)subghz_protocol_somfy_keytis_const.te_long); size_t size_upload = index; if(size_upload > instance->encoder.size_upload) { FURI_LOG_E(TAG, "Size upload exceeds allocated encoder buffer."); return false; } else { instance->encoder.size_upload = size_upload; } return true; } bool subghz_protocol_encoder_somfy_keytis_deserialize(void* context, FlipperFormat* flipper_format) { furi_assert(context); SubGhzProtocolEncoderSomfyKeytis* instance = context; bool res = false; do { if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) { FURI_LOG_E(TAG, "Deserialize error"); break; } //optional parameter parameter flipper_format_read_uint32( flipper_format, "Repeat", (uint32_t*)&instance->encoder.repeat, 1); subghz_protocol_encoder_somfy_keytis_get_upload(instance, instance->generic.btn); if(!flipper_format_rewind(flipper_format)) { FURI_LOG_E(TAG, "Rewind error"); break; } uint8_t key_data[sizeof(uint64_t)] = {0}; for(size_t i = 0; i < sizeof(uint64_t); i++) { key_data[sizeof(uint64_t) - i - 1] = (instance->generic.data >> i * 8) & 0xFF; } if(!flipper_format_update_hex(flipper_format, "Key", key_data, sizeof(uint64_t))) { FURI_LOG_E(TAG, "Unable to add Key"); break; } instance->encoder.is_running = true; res = true; } while(false); return res; } void subghz_protocol_encoder_somfy_keytis_stop(void* context) { SubGhzProtocolEncoderSomfyKeytis* instance = context; instance->encoder.is_running = false; } LevelDuration subghz_protocol_encoder_somfy_keytis_yield(void* context) { SubGhzProtocolEncoderSomfyKeytis* instance = context; if(instance->encoder.repeat == 0 || !instance->encoder.is_running) { instance->encoder.is_running = false; return level_duration_reset(); } LevelDuration ret = instance->encoder.upload[instance->encoder.front]; if(++instance->encoder.front == instance->encoder.size_upload) { instance->encoder.repeat--; instance->encoder.front = 0; } return ret; } /** * Сhecksum calculation. * @param data Вata for checksum calculation * @return CRC */ static uint8_t subghz_protocol_somfy_keytis_crc(uint64_t data) { uint8_t crc = 0; data &= 0xFFF0FFFFFFFFFF; for(uint8_t i = 0; i < 56; i += 8) { crc = crc ^ data >> i ^ (data >> (i + 4)); } return crc & 0xf; } void subghz_protocol_decoder_somfy_keytis_feed(void* context, bool level, uint32_t duration) { furi_assert(context); SubGhzProtocolDecoderSomfyKeytis* instance = context; ManchesterEvent event = ManchesterEventReset; switch(instance->decoder.parser_step) { case SomfyKeytisDecoderStepReset: if((level) && DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_short * 4) < subghz_protocol_somfy_keytis_const.te_delta * 4) { instance->decoder.parser_step = SomfyKeytisDecoderStepFoundPreambula; instance->header_count++; } break; case SomfyKeytisDecoderStepFoundPreambula: if((!level) && (DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_short * 4) < subghz_protocol_somfy_keytis_const.te_delta * 4)) { instance->decoder.parser_step = SomfyKeytisDecoderStepCheckPreambula; } else { instance->header_count = 0; instance->decoder.parser_step = SomfyKeytisDecoderStepReset; } break; case SomfyKeytisDecoderStepCheckPreambula: if(level) { if(DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_short * 4) < subghz_protocol_somfy_keytis_const.te_delta * 4) { instance->decoder.parser_step = SomfyKeytisDecoderStepFoundPreambula; instance->header_count++; } else if( (instance->header_count > 1) && (DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_short * 7) < subghz_protocol_somfy_keytis_const.te_delta * 4)) { instance->decoder.parser_step = SomfyKeytisDecoderStepDecoderData; instance->decoder.decode_data = 0; instance->decoder.decode_count_bit = 0; instance->press_duration_counter = 0; manchester_advance( instance->manchester_saved_state, ManchesterEventReset, &instance->manchester_saved_state, NULL); manchester_advance( instance->manchester_saved_state, ManchesterEventLongHigh, &instance->manchester_saved_state, NULL); } } break; case SomfyKeytisDecoderStepDecoderData: if(!level) { if(DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_short) < subghz_protocol_somfy_keytis_const.te_delta) { event = ManchesterEventShortLow; } else if( DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_long) < subghz_protocol_somfy_keytis_const.te_delta) { event = ManchesterEventLongLow; } else if( duration >= (subghz_protocol_somfy_keytis_const.te_long + subghz_protocol_somfy_keytis_const.te_delta)) { if(instance->decoder.decode_count_bit == subghz_protocol_somfy_keytis_const.min_count_bit_for_found) { //check crc uint64_t data_tmp = instance->generic.data ^ (instance->generic.data >> 8); if(((data_tmp >> 40) & 0xF) == subghz_protocol_somfy_keytis_crc(data_tmp)) { instance->generic.data = instance->decoder.decode_data; instance->generic.data_count_bit = instance->decoder.decode_count_bit; if(instance->base.callback) instance->base.callback(&instance->base, instance->base.context); } } instance->decoder.decode_data = 0; instance->decoder.decode_count_bit = 0; manchester_advance( instance->manchester_saved_state, ManchesterEventReset, &instance->manchester_saved_state, NULL); manchester_advance( instance->manchester_saved_state, ManchesterEventLongHigh, &instance->manchester_saved_state, NULL); instance->decoder.parser_step = SomfyKeytisDecoderStepReset; } else { instance->decoder.parser_step = SomfyKeytisDecoderStepReset; } } else { if(DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_short) < subghz_protocol_somfy_keytis_const.te_delta) { event = ManchesterEventShortHigh; } else if( DURATION_DIFF(duration, subghz_protocol_somfy_keytis_const.te_long) < subghz_protocol_somfy_keytis_const.te_delta) { event = ManchesterEventLongHigh; } else { instance->decoder.parser_step = SomfyKeytisDecoderStepReset; } } if(event != ManchesterEventReset) { bool data; bool data_ok = manchester_advance( instance->manchester_saved_state, event, &instance->manchester_saved_state, &data); if(data_ok) { if(instance->decoder.decode_count_bit < 56) { instance->decoder.decode_data = (instance->decoder.decode_data << 1) | data; } else { instance->press_duration_counter = (instance->press_duration_counter << 1) | data; } instance->decoder.decode_count_bit++; } } break; } } /** * Analysis of received data * @param instance Pointer to a SubGhzBlockGeneric* instance */ static void subghz_protocol_somfy_keytis_check_remote_controller(SubGhzBlockGeneric* instance) { //https://pushstack.wordpress.com/somfy-rts-protocol/ /* * 604 us * / * | 2416us | 2416us | 2416us | 2416us | 4550 us | | * * +--------+ +--------+ +---...---+ * + +--------+ +--------+ +--+XXXX...XXX+ * * | hw. sync. | soft. | | * | | sync. | data | * * * encrypt | decrypt * * package 80 bit pdc key btn crc cnt serial * * 0xA453537C4B9855 C40019 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 C80026 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 CC0033 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 D00049 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 D4005C => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 D80063 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 DC0076 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 E00086 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 E40093 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 E800AC => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 EC00B9 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 F000C3 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 F400D6 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 F800E9 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 FC00FC => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 FC0102 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 FC0113 => 0xA 4 F 7 002F 37D3CD * 0xA453537C4B9855 FC0120 => 0xA 4 F 7 002F 37D3CD * .......... * 0xA453537C4B9855 FC048F => 0xA 4 F 7 002F 37D3CD * * Pdc: "Press Duration Counter" the total delay of the button is sent 72 parcels, * pdc cnt4b cnt8b pdc_crc * C40019 => 11 0001 00 0000 00000001 1001 * C80026 => 11 0010 00 0000 00000010 0110 * CC0033 => 11 0011 00 0000 00000011 0011 * D00049 => 11 0100 00 0000 00000100 1001 * D4005C => 11 0101 00 0000 00000101 1100 * D80063 => 11 0110 00 0000 00000110 0011 * DC0076 => 11 0111 00 0000 00000111 0110 * E00086 => 11 1000 00 0000 00001000 0110 * E40093 => 11 1001 00 0000 00001001 0011 * E800AC => 11 1010 00 0000 00001010 1100 * EC00B9 => 11 1011 00 0000 00001011 1001 * F000C3 => 11 1100 00 0000 00001100 0011 * F400D6 => 11 1101 00 0000 00001101 0110 * F800E9 => 11 1110 00 0000 00001110 1001 * FC00FC => 11 1111 00 0000 00001111 1100 * FC0102 => 11 1111 00 0000 00010000 0010 * FC0113 => 11 1111 00 0000 00010001 0011 * FC0120 => 11 1111 00 0000 00010010 0000 * * Cnt4b: 4-bit counter changes from 1 to 15 then always equals 15 * Cnt8b: 8-bit counter changes from 1 to 72 (0x48) * Ppdc_crc: * uint8_t crc=0; * for(i=4; i<24; i+=4){ * crc ^=(pdc>>i); * } * return crc; * example: crc = 1^0^0^4^C = 9 * 11, 00, 0000: const * * Key: “Encryption Key”, Most significant 4-bit are always 0xA, Least Significant bits is * a linear counter. In the Smoove Origin this counter is increased together with the * rolling code. But leaving this on a constant value also works. Gerardwr notes that * for some other types of remotes the MSB is not constant. * 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. * 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; } /** * Get button name. * @param btn Button number, 4 bit */ 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, SubGhzRadioPreset* preset) { furi_assert(context); SubGhzProtocolDecoderSomfyKeytis* instance = context; bool res = subghz_block_generic_serialize(&instance->generic, flipper_format, 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(instance->generic.data_count_bit != subghz_protocol_somfy_keytis_const.min_count_bit_for_found) { FURI_LOG_E(TAG, "Wrong number of bits in key"); 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, FuriString* output) { furi_assert(context); SubGhzProtocolDecoderSomfyKeytis* instance = context; subghz_protocol_somfy_keytis_check_remote_controller(&instance->generic); furi_string_cat_printf( output, "%s %db\r\n" "%lX%08lX%06lX\r\n" "Sn:0x%06lX \r\n" "Cnt:0x%04lX\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)); }