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@@ -0,0 +1,271 @@
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+#include "acurite_986.h"
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+
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+#define TAG "WSProtocolAcurite_986"
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+
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+/*
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+ * Help
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+ * https://github.com/merbanan/rtl_433/blob/5bef4e43133ac4c0e2d18d36f87c52b4f9458453/src/devices/acurite.c#L1644
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+ *
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+ * 0110 0100 | 1010 1011 | 0110 0010 | 0000 0000 | 0111 0110
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+ * tttt tttt | IIII IIII | iiii iiii | nbuu uuuu | cccc cccc
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+ * - t: temperature in °F
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+ * - I: identification (high byte)
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+ * - i: identification (low byte)
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+ * - n: sensor number
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+ * - b: battery low flag to indicate low battery voltage
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+ * - u: unknown
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+ * - c: CRC (CRC-8 poly 0x07, little-endian)
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+ *
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+ * bits are sent and shown above LSB first
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+ * identification changes on battery switch
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+ */
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+
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+static const SubGhzBlockConst ws_protocol_acurite_986_const = {
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+ .te_short = 800,
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+ .te_long = 1750,
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+ .te_delta = 50,
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+ .min_count_bit_for_found = 40,
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+};
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+
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+struct WSProtocolDecoderAcurite_986 {
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+ SubGhzProtocolDecoderBase base;
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+
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+ SubGhzBlockDecoder decoder;
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+ WSBlockGeneric generic;
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+};
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+
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+struct WSProtocolEncoderAcurite_986 {
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+ SubGhzProtocolEncoderBase base;
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+
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+ SubGhzProtocolBlockEncoder encoder;
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+ WSBlockGeneric generic;
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+};
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+
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+typedef enum {
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+ Acurite_986DecoderStepReset = 0,
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+ Acurite_986DecoderStepSync1,
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+ Acurite_986DecoderStepSync2,
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+ Acurite_986DecoderStepSync3,
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+ Acurite_986DecoderStepSaveDuration,
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+ Acurite_986DecoderStepCheckDuration,
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+} Acurite_986DecoderStep;
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+
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+const SubGhzProtocolDecoder ws_protocol_acurite_986_decoder = {
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+ .alloc = ws_protocol_decoder_acurite_986_alloc,
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+ .free = ws_protocol_decoder_acurite_986_free,
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+
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+ .feed = ws_protocol_decoder_acurite_986_feed,
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+ .reset = ws_protocol_decoder_acurite_986_reset,
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+
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+ .get_hash_data = ws_protocol_decoder_acurite_986_get_hash_data,
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+ .serialize = ws_protocol_decoder_acurite_986_serialize,
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+ .deserialize = ws_protocol_decoder_acurite_986_deserialize,
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+ .get_string = ws_protocol_decoder_acurite_986_get_string,
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+};
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+
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+const SubGhzProtocolEncoder ws_protocol_acurite_986_encoder = {
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+ .alloc = NULL,
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+ .free = NULL,
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+
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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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+
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+const SubGhzProtocol ws_protocol_acurite_986 = {
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+ .name = WS_PROTOCOL_ACURITE_986_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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+
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+ .decoder = &ws_protocol_acurite_986_decoder,
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+ .encoder = &ws_protocol_acurite_986_encoder,
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+};
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+
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+void* ws_protocol_decoder_acurite_986_alloc(SubGhzEnvironment* environment) {
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+ UNUSED(environment);
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+ WSProtocolDecoderAcurite_986* instance = malloc(sizeof(WSProtocolDecoderAcurite_986));
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+ instance->base.protocol = &ws_protocol_acurite_986;
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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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+
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+void ws_protocol_decoder_acurite_986_free(void* context) {
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+ furi_assert(context);
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+ WSProtocolDecoderAcurite_986* instance = context;
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+ free(instance);
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+}
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+
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+void ws_protocol_decoder_acurite_986_reset(void* context) {
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+ furi_assert(context);
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+ WSProtocolDecoderAcurite_986* instance = context;
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+ instance->decoder.parser_step = Acurite_986DecoderStepReset;
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+}
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+
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+static bool ws_protocol_acurite_986_check(WSProtocolDecoderAcurite_986* instance) {
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+ if(!instance->decoder.decode_data) return false;
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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,
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+ instance->decoder.decode_data >> 16,
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+ instance->decoder.decode_data >> 8 };
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+
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+ uint8_t crc = subghz_protocol_blocks_crc8(msg, 4, 0x07, 0x00);
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+ return (crc == (instance->decoder.decode_data & 0xFF));
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+}
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+
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+/**
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+ * Analysis of received data
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+ * @param instance Pointer to a WSBlockGeneric* instance
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+ */
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+static void ws_protocol_acurite_986_remote_controller(WSBlockGeneric* instance) {
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+ int temp;
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+
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+ instance->id = subghz_protocol_blocks_reverse_key(instance->data >> 24, 8);
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+ instance->id = (instance->id << 8) | subghz_protocol_blocks_reverse_key(instance->data >> 16, 8);
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+ instance->battery_low = (instance->data >> 14) & 1;
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+ instance->channel = ((instance->data >> 15) & 1) + 1;
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+
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+ temp = subghz_protocol_blocks_reverse_key(instance->data >> 32, 8);
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+ if(temp & 0x80) {
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+ temp = -(temp & 0x7F);
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+ }
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+ instance->temp = locale_fahrenheit_to_celsius((float)temp);
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+ instance->btn = WS_NO_BTN;
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+ instance->humidity = WS_NO_HUMIDITY;
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+}
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+
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+void ws_protocol_decoder_acurite_986_feed(void* context, bool level, uint32_t duration) {
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+ furi_assert(context);
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+ WSProtocolDecoderAcurite_986* instance = context;
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+
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+ switch(instance->decoder.parser_step) {
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+ case Acurite_986DecoderStepReset:
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+ if((!level) && (DURATION_DIFF(duration, ws_protocol_acurite_986_const.te_long) <
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+ ws_protocol_acurite_986_const.te_delta * 15)) {
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+ //Found 1st sync bit
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+ instance->decoder.parser_step = Acurite_986DecoderStepSync1;
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+ instance->decoder.decode_data = 0;
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+ instance->decoder.decode_count_bit = 0;
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+ }
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+ break;
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+
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+ case Acurite_986DecoderStepSync1:
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+ if(DURATION_DIFF(duration, ws_protocol_acurite_986_const.te_long) <
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+ ws_protocol_acurite_986_const.te_delta * 15) {
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+ if(!level) {
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+ instance->decoder.parser_step = Acurite_986DecoderStepSync2;
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+ }
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+ } else {
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+ instance->decoder.parser_step = Acurite_986DecoderStepReset;
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+ }
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+ break;
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+
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+ case Acurite_986DecoderStepSync2:
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+ if(DURATION_DIFF(duration, ws_protocol_acurite_986_const.te_long) <
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+ ws_protocol_acurite_986_const.te_delta * 15) {
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+ if(!level) {
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+ instance->decoder.parser_step = Acurite_986DecoderStepSync3;
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+ }
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+ } else {
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+ instance->decoder.parser_step = Acurite_986DecoderStepReset;
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+ }
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+ break;
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+
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+ case Acurite_986DecoderStepSync3:
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+ if(DURATION_DIFF(duration, ws_protocol_acurite_986_const.te_long) <
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+ ws_protocol_acurite_986_const.te_delta * 15) {
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+ if(!level) {
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+ instance->decoder.parser_step = Acurite_986DecoderStepSaveDuration;
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+ }
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+ } else {
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+ instance->decoder.parser_step = Acurite_986DecoderStepReset;
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+ }
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+ break;
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+
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+ case Acurite_986DecoderStepSaveDuration:
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+ if(level) {
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+ instance->decoder.te_last = duration;
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+ instance->decoder.parser_step = Acurite_986DecoderStepCheckDuration;
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+ } else {
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+ instance->decoder.parser_step = Acurite_986DecoderStepReset;
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+ }
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+ break;
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+
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+ case Acurite_986DecoderStepCheckDuration:
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+ if(!level) {
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+ if(DURATION_DIFF(duration, ws_protocol_acurite_986_const.te_short) <
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+ ws_protocol_acurite_986_const.te_delta * 10) {
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+ if(duration < ws_protocol_acurite_986_const.te_short) {
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+ subghz_protocol_blocks_add_bit(&instance->decoder, 0);
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+ instance->decoder.parser_step = Acurite_986DecoderStepSaveDuration;
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+ } else {
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+ subghz_protocol_blocks_add_bit(&instance->decoder, 1);
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+ instance->decoder.parser_step = Acurite_986DecoderStepSaveDuration;
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+ }
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+ } else {
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+ //Found syncPostfix
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+ instance->decoder.parser_step = Acurite_986DecoderStepReset;
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+ if((instance->decoder.decode_count_bit == ws_protocol_acurite_986_const.min_count_bit_for_found) &&
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+ ws_protocol_acurite_986_check(instance)) {
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+ instance->generic.data = instance->decoder.decode_data;
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+ instance->generic.data_count_bit = instance->decoder.decode_count_bit;
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+ ws_protocol_acurite_986_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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+ }
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+ } else {
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+ instance->decoder.parser_step = Acurite_986DecoderStepReset;
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+ }
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+ break;
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+ }
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+}
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+
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+uint8_t ws_protocol_decoder_acurite_986_get_hash_data(void* context) {
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+ furi_assert(context);
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+ WSProtocolDecoderAcurite_986* 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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+
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+SubGhzProtocolStatus ws_protocol_decoder_acurite_986_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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+ WSProtocolDecoderAcurite_986* instance = context;
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+ return ws_block_generic_serialize(&instance->generic, flipper_format, preset);
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+}
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+
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+SubGhzProtocolStatus
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+ ws_protocol_decoder_acurite_986_deserialize(void* context, FlipperFormat* flipper_format) {
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+ furi_assert(context);
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+ WSProtocolDecoderAcurite_986* 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_acurite_986_const.min_count_bit_for_found);
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+}
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+
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+void ws_protocol_decoder_acurite_986_get_string(void* context, FuriString* output) {
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+ furi_assert(context);
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+ WSProtocolDecoderAcurite_986* 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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