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https://github.com/Next-Flip/Momentum-Firmware.git
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7e09f4b774
* feat(subghz): Added Vauno-EN8822 weather station * Update changelog --------- Co-authored-by: Willy-JL <49810075+Willy-JL@users.noreply.github.com>
259 lines
9.2 KiB
C
259 lines
9.2 KiB
C
#include "vauno_en8822c.h"
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#include "furi/core/log.h"
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#define TAG "WSProtocolVaunoEN8822C"
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/*
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* Help
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* https://github.com/merbanan/rtl_433/blob/master/src/devices/vauno_en8822c.c
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*
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* Vauno EN8822C sensor on 433.92MHz.
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*
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* Largely the same as Esperanza EWS, s3318p.
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* @sa esperanza_ews.c s3318p.c
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* List of known supported devices:
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* - Vauno EN8822C-1
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* - FUZHOU ESUN ELECTRONIC outdoor T21 sensor
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*
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* Frame structure (42 bits):
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*
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* Byte: 0 1 2 3 4
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* Nibble: 1 2 3 4 5 6 7 8 9 10 11
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* Type: IIIIIIII B?CCTTTT TTTTTTTT HHHHHHHF FFFBXXXX XX
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*
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* - I: Random device ID
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* - C: Channel (1-3)
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* - T: Temperature (Little-endian)
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* - H: Humidity (Little-endian)
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* - F: Flags (unknown)
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* - B: Battery (1=low voltage ~<2.5V)
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* - X: Checksum (6 bit nibble sum)
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*
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* Sample Data:
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*
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* [00] {42} af 0f a2 7c 01 c0 : 10101111 00001111 10100010 01111100 00000001 11
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*
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* - Sensor ID = 175 = 0xaf
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* - Channel = 0
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* - temp = -93 = 0x111110100010
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* - TemperatureC = -9.3
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* - hum = 62% = 0x0111110
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*
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* Copyright (C) 2022 Jamie Barron <gumbald@gmail.com>
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*
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* @m7i-org - because the ether is wavy
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*
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*/
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static const SubGhzBlockConst ws_protocol_vauno_en8822c_const = {
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.te_short = 500,
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.te_long = 1940,
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.te_delta = 150,
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.min_count_bit_for_found = 42,
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};
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struct WSProtocolDecoderVaunoEN8822C {
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SubGhzProtocolDecoderBase base;
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SubGhzBlockDecoder decoder;
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WSBlockGeneric generic;
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};
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struct WSProtocolEncoderVaunoEN8822C {
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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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const SubGhzProtocolDecoder ws_protocol_vauno_en8822c_decoder = {
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.alloc = ws_protocol_decoder_vauno_en8822c_alloc,
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.free = ws_protocol_decoder_vauno_en8822c_free,
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.feed = ws_protocol_decoder_vauno_en8822c_feed,
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.reset = ws_protocol_decoder_vauno_en8822c_reset,
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.get_hash_data = NULL,
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.get_hash_data_long = ws_protocol_decoder_vauno_en8822c_get_hash_data,
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.serialize = ws_protocol_decoder_vauno_en8822c_serialize,
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.deserialize = ws_protocol_decoder_vauno_en8822c_deserialize,
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.get_string = ws_protocol_decoder_vauno_en8822c_get_string,
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.get_string_brief = NULL,
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};
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const SubGhzProtocolEncoder ws_protocol_vauno_en8822c_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_vauno_en8822c = {
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.name = WS_PROTOCOL_VAUNO_EN8822C_NAME,
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.type = SubGhzProtocolTypeStatic,
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.flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_315 | SubGhzProtocolFlag_868 |
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SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable | SubGhzProtocolFlag_Load |
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SubGhzProtocolFlag_Save,
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.filter = SubGhzProtocolFilter_Weather,
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.decoder = &ws_protocol_vauno_en8822c_decoder,
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.encoder = &ws_protocol_vauno_en8822c_encoder,
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};
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typedef enum {
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VaunoEN8822CDecoderStepReset = 0,
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VaunoEN8822CDecoderStepSaveDuration,
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VaunoEN8822CDecoderStepCheckDuration,
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} VaunoEN8822CDecoderStep;
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void* ws_protocol_decoder_vauno_en8822c_alloc(SubGhzEnvironment* environment) {
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UNUSED(environment);
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WSProtocolDecoderVaunoEN8822C* instance = malloc(sizeof(WSProtocolDecoderVaunoEN8822C));
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instance->base.protocol = &ws_protocol_vauno_en8822c;
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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_vauno_en8822c_free(void* context) {
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furi_assert(context);
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WSProtocolDecoderVaunoEN8822C* instance = context;
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free(instance);
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}
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void ws_protocol_decoder_vauno_en8822c_reset(void* context) {
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furi_assert(context);
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WSProtocolDecoderVaunoEN8822C* instance = context;
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instance->decoder.parser_step = VaunoEN8822CDecoderStepReset;
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}
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static bool ws_protocol_vauno_en8822c_check(WSProtocolDecoderVaunoEN8822C* instance) {
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if(!instance->decoder.decode_data) return false;
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// The sum of all nibbles should match the last 6 bits
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uint8_t sum = 0;
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for(uint8_t i = 6; i <= 38; i += 4) {
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sum += ((instance->decoder.decode_data >> i) & 0x0f);
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}
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return sum != 0 && (sum & 0x3f) == (instance->decoder.decode_data & 0x3f);
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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_vauno_en8822c_extract_data(WSBlockGeneric* instance) {
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instance->id = (instance->data >> 34) & 0xff;
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instance->battery_low = (instance->data >> 33) & 0x01;
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instance->channel = ((instance->data >> 30) & 0x03);
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int16_t temp = (instance->data >> 18) & 0x0fff;
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/* Handle signed data */
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if(temp & 0x0800) {
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temp |= 0xf000;
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}
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instance->temp = (float)temp / 10.0;
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instance->humidity = (instance->data >> 11) & 0x7f;
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instance->btn = WS_NO_BTN;
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}
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void ws_protocol_decoder_vauno_en8822c_feed(void* context, bool level, uint32_t duration) {
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furi_assert(context);
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WSProtocolDecoderVaunoEN8822C* instance = context;
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switch(instance->decoder.parser_step) {
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case VaunoEN8822CDecoderStepReset:
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if((!level) && DURATION_DIFF(duration, ws_protocol_vauno_en8822c_const.te_long * 4) <
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ws_protocol_vauno_en8822c_const.te_delta) {
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instance->decoder.parser_step = VaunoEN8822CDecoderStepSaveDuration;
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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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case VaunoEN8822CDecoderStepSaveDuration:
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if(level) {
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instance->decoder.te_last = duration;
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instance->decoder.parser_step = VaunoEN8822CDecoderStepCheckDuration;
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} else {
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instance->decoder.parser_step = VaunoEN8822CDecoderStepReset;
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}
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break;
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case VaunoEN8822CDecoderStepCheckDuration:
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if(!level) {
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if(DURATION_DIFF(instance->decoder.te_last, ws_protocol_vauno_en8822c_const.te_short) <
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ws_protocol_vauno_en8822c_const.te_delta) {
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if(DURATION_DIFF(duration, ws_protocol_vauno_en8822c_const.te_long * 2) <
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ws_protocol_vauno_en8822c_const.te_delta) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 1);
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instance->decoder.parser_step = VaunoEN8822CDecoderStepSaveDuration;
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} else if(
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DURATION_DIFF(duration, ws_protocol_vauno_en8822c_const.te_long) <
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ws_protocol_vauno_en8822c_const.te_delta) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 0);
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instance->decoder.parser_step = VaunoEN8822CDecoderStepSaveDuration;
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} else if(
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DURATION_DIFF(duration, ws_protocol_vauno_en8822c_const.te_long * 4) <
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ws_protocol_vauno_en8822c_const.te_delta) {
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instance->decoder.parser_step = VaunoEN8822CDecoderStepReset;
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if(instance->decoder.decode_count_bit ==
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ws_protocol_vauno_en8822c_const.min_count_bit_for_found &&
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ws_protocol_vauno_en8822c_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_vauno_en8822c_extract_data(&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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} else if(instance->decoder.decode_count_bit == 1) {
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instance->decoder.parser_step = VaunoEN8822CDecoderStepSaveDuration;
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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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} else
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instance->decoder.parser_step = VaunoEN8822CDecoderStepReset;
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} else
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instance->decoder.parser_step = VaunoEN8822CDecoderStepReset;
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} else
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instance->decoder.parser_step = VaunoEN8822CDecoderStepReset;
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break;
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}
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}
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uint32_t ws_protocol_decoder_vauno_en8822c_get_hash_data(void* context) {
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furi_assert(context);
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WSProtocolDecoderVaunoEN8822C* instance = context;
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return subghz_protocol_blocks_get_hash_data_long(
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&instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
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}
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SubGhzProtocolStatus ws_protocol_decoder_vauno_en8822c_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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WSProtocolDecoderVaunoEN8822C* instance = context;
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return ws_block_generic_serialize(&instance->generic, flipper_format, preset);
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}
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SubGhzProtocolStatus
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ws_protocol_decoder_vauno_en8822c_deserialize(void* context, FlipperFormat* flipper_format) {
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furi_assert(context);
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WSProtocolDecoderVaunoEN8822C* 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_vauno_en8822c_const.min_count_bit_for_found);
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}
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void ws_protocol_decoder_vauno_en8822c_get_string(void* context, FuriString* output) {
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furi_assert(context);
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WSProtocolDecoderVaunoEN8822C* instance = context;
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ws_block_generic_get_string(&instance->generic, output);
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}
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