Sub-GHz: Added Vauno-EN8822 weather station

applications/debug/unit_tests/resources/unit_tests/subghz/vauno_en8822c.sub

@@ -0,0 +1,16 @@
+Filetype: Flipper SubGhz Key File
+Version: 1
+Frequency: 433920000
+Preset: FuriHalSubGhzPresetOok270Async
+Lat: 0.000000
+Lon: 0.000000
+Protocol: Vauno-EN8822C
+Id: 64
+Bit: 42
+Data: 00 00 01 00 02 16 88 1D
+Batt: 0
+Hum: 81
+Ts: 1728836876
+Ch: 0
+Btn: 255
+Temp: 13.300000

applications/debug/unit_tests/resources/unit_tests/subghz/vauno_en8822c_raw.sub

@@ -0,0 +1,6 @@
+Filetype: Flipper SubGhz RAW File
+Version: 1
+Frequency: 433920000
+Preset: FuriHalSubGhzPresetOok270Async
+Protocol: RAW
+RAW_Data: 588 -4136 546 -4150 578 -4158 546 -2096 578 -2092 592 -2068 592 -4126 578 -4144 570 -2064 580 -2092 594 -2102 564 -2168 582 -2078 582 -2112 544 -2102 572 -2096 572 -4130 574 -2114 552 -2090 594 -2064 590 -2104 560 -2094 566 -2090 564 -2092 580 -2098 566 -2096 570 -2164 578 -2090 546 -4140 578 -2104 568 -4138 578 -2078 550 -2086 594 -9092 592 -61848 200 -17582 66 -5072 130 -11038 100 -60 164 -8288 166 -2374 302 -94 166 -300 66 -18706 96 -25730 192 -66 158 -29578 64 -99962 128 -99858 96 -99908 130 -9892 164 -96 98 -89580 162 -106 76 -11000 196 -88450 506 -3900 522 -1900 522 -3878 500 -1936 482 -1958 488 -1938 500 -3906 462 -1966 482 -1950 500 -1924 502 -1958 474 -1940 480 -1960 520 -3858 512 -3878 524 -3888 464 -1968 482 -3910 478 -7792 518 -1912 502 -7802 478 -1962 476 -3902 510 -1938 500 -1938 480 -1954 504 -1936 488 -1954 476 -1960 476 -1948 478 -1964 466 -1994 446 -1970 464 -1972 480 -1954 474 -1954 482 -1970 474 -3934 446 -1958 466 -1978 480 -1956 468 -1960 472 -3900 516 -1948 478 -3908 494 -3878 508 -1938 502 -3896 482 -1950 480 -1938 514 -1924 516 -3884 484 -1940 502 -1942 480 -1958 502 -1930 506 -1938 480 -1934 516 -3860 510 -3912 488 -3888 504 -1940 486 -3876 506 -7800 526 -1928 476 -7790 512 -1942 508 -3876 486 -1918 518 -1962 482 -1954 482 -1930 498 -1958 470 -1936 490 -1962 484 -1960 476 -1932 520 -1938 490 -1928 508 -1952 478 -1940 480 -1958 500 -3892 498 -1930 484 -1960 474 -1936 496 -1934 514 -3890 508 -1906 522 -3882 478 -3916 484 -1932 506 -3888 512 -1928 502 -1928 502 -1938 492 -3920 490 -1924 510 -1928 498 -1934 480 -1954 488 -1972 462 -1964 478 -3896 484 -3902 476 -3912 484 -1944 476 -3916 498 -7784 510 -1930 504 -7796 498 -1936 518 -3864 492 -1964 482 -1950 474 -1962 470 -1954 490 -1960 478 -1952 482 -1934 520 -1934 482 -1948 482 -1944 486 -1970 448 -1976 500 -1936 480 -1964 474 -3902 484 -1960 480 -1952 482 -1962 474 -1950 486 -3914 448 -1984 450 -3916 520 -3872 490 -1942 480 -3938 448 -1970 464 -1972 482 -1964 484 -3910 484 -1938 476 -1950 516 -1926 470 -1970 514 -1906 500 -1950 506 -3876 510 -3850 524 -3896 486 -1934 518 -3870 506 -7798 512 -1912 512 -7798 516 -1918 478 -3924 458 -1956 472 -1954 506 -1936 512 -1930 474 -1968 482 -1930 504 -1940 486 -1958 482 -1960 486 -1936 486 -1936 494 -1934 516 -1912 510 -1962 474 -3882 504 -1956 478 -1938 510 -1926 500 -1924 514 -3920 450 -1970 478 -3904 488 -3896 502 -1942 486 -3912 476 -1926 508 -1940 486 -1962 474 -3920 484 -1930 512 -1944 470 -1970 470 -1948 502 -1936 478 -1962 482 -3914 484 -3878 502 -3906 472 -1968 488 -3894 498 -7774 496 -1948

applications/debug/unit_tests/tests/subghz/subghz_test.c

@@ -691,6 +691,13 @@ MU_TEST(subghz_decoder_bresser_3ch_v0_test) {
         "Test decoder " WS_PROTOCOL_BRESSER_3CH_NAME " v0 error\r\n");
 }
 
+MU_TEST(subghz_decoder_vauno_en8822c_test) {
+    mu_assert(
+        subghz_decoder_test(
+            EXT_PATH("unit_tests/subghz/vauno_en8822c.sub"), WS_PROTOCOL_VAUNO_EN8822C_NAME),
+        "Test decoder " WS_PROTOCOL_VAUNO_EN8822C_NAME " error\r\n");
+}
+
 //test encoders
 MU_TEST(subghz_encoder_princeton_test) {
     mu_assert(
@@ -916,6 +923,7 @@ MU_TEST_SUITE(subghz) {
     MU_RUN_TEST(subghz_decoder_solight_te44_test);
     MU_RUN_TEST(subghz_decoder_bresser_3ch_v1_test);
     MU_RUN_TEST(subghz_decoder_bresser_3ch_v0_test);
+    MU_RUN_TEST(subghz_decoder_vauno_en8822c_test);
 
     MU_RUN_TEST(subghz_encoder_princeton_test);
     MU_RUN_TEST(subghz_encoder_came_test);

lib/subghz/protocols/protocol_items.c

@@ -67,6 +67,7 @@ const SubGhzProtocol* subghz_protocol_registry_items[] = {
     &ws_protocol_kedsum_th,
     &ws_protocol_emose601x,
     &ws_protocol_acurite_5n1,
+    &ws_protocol_vauno_en8822c,
     &subghz_protocol_pocsag,
     &tpms_protocol_schrader_gg4,
     &subghz_protocol_bin_raw,

lib/subghz/protocols/protocol_items.h

@@ -68,6 +68,7 @@
 #include "acurite_5n1.h"
 #include "solight_te44.h"
 #include "bresser_3ch.h"
+#include "vauno_en8822c.h"
 #include "pocsag.h"
 #include "schrader_gg4.h"
 #include "bin_raw.h"

lib/subghz/protocols/vauno_en8822c.c

@@ -0,0 +1,258 @@
+#include "vauno_en8822c.h"
+#include "furi/core/log.h"
+#define TAG "WSProtocolVaunoEN8822C"
+
+/*
+ * Help
+ * https://github.com/merbanan/rtl_433/blob/master/src/devices/vauno_en8822c.c
+ *
+ * Vauno EN8822C sensor on 433.92MHz.
+ *
+ * Largely the same as Esperanza EWS, s3318p.
+ * @sa esperanza_ews.c s3318p.c
+
+ * List of known supported devices:
+ * - Vauno EN8822C-1
+ * - FUZHOU ESUN ELECTRONIC outdoor T21 sensor
+ *
+ * Frame structure (42 bits):
+ *
+ *    Byte:      0        1        2        3        4
+ *    Nibble:    1   2    3   4    5   6    7   8    9   10   11
+ *    Type:      IIIIIIII B?CCTTTT TTTTTTTT HHHHHHHF FFFBXXXX XX
+ *
+ * - I: Random device ID
+ * - C: Channel (1-3)
+ * - T: Temperature (Little-endian)
+ * - H: Humidity (Little-endian)
+ * - F: Flags (unknown)
+ * - B: Battery (1=low voltage ~<2.5V)
+ * - X: Checksum (6 bit nibble sum)
+ * 
+ * Sample Data:
+ * 
+ *     [00] {42} af 0f a2 7c 01 c0 : 10101111 00001111 10100010 01111100 00000001 11
+ * 
+ * - Sensor ID = 175 = 0xaf
+ * - Channel = 0
+ * - temp = -93 = 0x111110100010
+ * - TemperatureC = -9.3
+ * - hum = 62% = 0x0111110
+ *
+ * Copyright (C) 2022 Jamie Barron <gumbald@gmail.com>
+ *
+ * @m7i-org - because the ether is wavy
+ *
+ */
+
+static const SubGhzBlockConst ws_protocol_vauno_en8822c_const = {
+    .te_short = 500,
+    .te_long = 1940,
+    .te_delta = 150,
+    .min_count_bit_for_found = 42,
+};
+
+struct WSProtocolDecoderVaunoEN8822C {
+    SubGhzProtocolDecoderBase base;
+
+    SubGhzBlockDecoder decoder;
+    WSBlockGeneric generic;
+};
+
+struct WSProtocolEncoderVaunoEN8822C {
+    SubGhzProtocolEncoderBase base;
+
+    SubGhzProtocolBlockEncoder encoder;
+    WSBlockGeneric generic;
+};
+
+const SubGhzProtocolDecoder ws_protocol_vauno_en8822c_decoder = {
+    .alloc = ws_protocol_decoder_vauno_en8822c_alloc,
+    .free = ws_protocol_decoder_vauno_en8822c_free,
+
+    .feed = ws_protocol_decoder_vauno_en8822c_feed,
+    .reset = ws_protocol_decoder_vauno_en8822c_reset,
+
+    .get_hash_data = NULL,
+    .get_hash_data_long = ws_protocol_decoder_vauno_en8822c_get_hash_data,
+    .serialize = ws_protocol_decoder_vauno_en8822c_serialize,
+    .deserialize = ws_protocol_decoder_vauno_en8822c_deserialize,
+    .get_string = ws_protocol_decoder_vauno_en8822c_get_string,
+    .get_string_brief = NULL,
+};
+
+const SubGhzProtocolEncoder ws_protocol_vauno_en8822c_encoder = {
+    .alloc = NULL,
+    .free = NULL,
+
+    .deserialize = NULL,
+    .stop = NULL,
+    .yield = NULL,
+};
+
+const SubGhzProtocol ws_protocol_vauno_en8822c = {
+    .name = WS_PROTOCOL_VAUNO_EN8822C_NAME,
+    .type = SubGhzProtocolTypeStatic,
+    .flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_315 | SubGhzProtocolFlag_868 |
+            SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable | SubGhzProtocolFlag_Load |
+            SubGhzProtocolFlag_Save,
+    .filter = SubGhzProtocolFilter_Weather,
+    .decoder = &ws_protocol_vauno_en8822c_decoder,
+    .encoder = &ws_protocol_vauno_en8822c_encoder,
+};
+
+typedef enum {
+    VaunoEN8822CDecoderStepReset = 0,
+    VaunoEN8822CDecoderStepSaveDuration,
+    VaunoEN8822CDecoderStepCheckDuration,
+} VaunoEN8822CDecoderStep;
+
+void* ws_protocol_decoder_vauno_en8822c_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    WSProtocolDecoderVaunoEN8822C* instance = malloc(sizeof(WSProtocolDecoderVaunoEN8822C));
+    instance->base.protocol = &ws_protocol_vauno_en8822c;
+    instance->generic.protocol_name = instance->base.protocol->name;
+    return instance;
+}
+
+void ws_protocol_decoder_vauno_en8822c_free(void* context) {
+    furi_assert(context);
+    WSProtocolDecoderVaunoEN8822C* instance = context;
+    free(instance);
+}
+
+void ws_protocol_decoder_vauno_en8822c_reset(void* context) {
+    furi_assert(context);
+    WSProtocolDecoderVaunoEN8822C* instance = context;
+    instance->decoder.parser_step = VaunoEN8822CDecoderStepReset;
+}
+
+static bool ws_protocol_vauno_en8822c_check(WSProtocolDecoderVaunoEN8822C* instance) {
+    if(!instance->decoder.decode_data) return false;
+
+    // The sum of all nibbles should match the last 6 bits
+    uint8_t sum = 0;
+    for(uint8_t i = 6; i <= 38; i += 4) {
+        sum += ((instance->decoder.decode_data >> i) & 0x0f);
+    }
+
+    return sum != 0 && (sum & 0x3f) == (instance->decoder.decode_data & 0x3f);
+}
+
+/**
+ * Analysis of received data
+ * @param instance Pointer to a WSBlockGeneric* instance
+ */
+static void ws_protocol_vauno_en8822c_extract_data(WSBlockGeneric* instance) {
+    instance->id = (instance->data >> 34) & 0xff;
+    instance->battery_low = (instance->data >> 33) & 0x01;
+    instance->channel = ((instance->data >> 30) & 0x03);
+
+    int16_t temp = (instance->data >> 18) & 0x0fff;
+    /* Handle signed data */
+    if(temp & 0x0800) {
+        temp |= 0xf000;
+    }
+    instance->temp = (float)temp / 10.0;
+
+    instance->humidity = (instance->data >> 11) & 0x7f;
+    instance->btn = WS_NO_BTN;
+}
+
+void ws_protocol_decoder_vauno_en8822c_feed(void* context, bool level, uint32_t duration) {
+    furi_assert(context);
+    WSProtocolDecoderVaunoEN8822C* instance = context;
+
+    switch(instance->decoder.parser_step) {
+    case VaunoEN8822CDecoderStepReset:
+        if((!level) && DURATION_DIFF(duration, ws_protocol_vauno_en8822c_const.te_long * 4) <
+                           ws_protocol_vauno_en8822c_const.te_delta) {
+            instance->decoder.parser_step = VaunoEN8822CDecoderStepSaveDuration;
+            instance->decoder.decode_data = 0;
+            instance->decoder.decode_count_bit = 0;
+        }
+        break;
+
+    case VaunoEN8822CDecoderStepSaveDuration:
+        if(level) {
+            instance->decoder.te_last = duration;
+            instance->decoder.parser_step = VaunoEN8822CDecoderStepCheckDuration;
+        } else {
+            instance->decoder.parser_step = VaunoEN8822CDecoderStepReset;
+        }
+        break;
+
+    case VaunoEN8822CDecoderStepCheckDuration:
+        if(!level) {
+            if(DURATION_DIFF(instance->decoder.te_last, ws_protocol_vauno_en8822c_const.te_short) <
+               ws_protocol_vauno_en8822c_const.te_delta) {
+                if(DURATION_DIFF(duration, ws_protocol_vauno_en8822c_const.te_long * 2) <
+                   ws_protocol_vauno_en8822c_const.te_delta) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                    instance->decoder.parser_step = VaunoEN8822CDecoderStepSaveDuration;
+                } else if(
+                    DURATION_DIFF(duration, ws_protocol_vauno_en8822c_const.te_long) <
+                    ws_protocol_vauno_en8822c_const.te_delta) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                    instance->decoder.parser_step = VaunoEN8822CDecoderStepSaveDuration;
+                } else if(
+                    DURATION_DIFF(duration, ws_protocol_vauno_en8822c_const.te_long * 4) <
+                    ws_protocol_vauno_en8822c_const.te_delta) {
+                    instance->decoder.parser_step = VaunoEN8822CDecoderStepReset;
+                    if(instance->decoder.decode_count_bit ==
+                           ws_protocol_vauno_en8822c_const.min_count_bit_for_found &&
+                       ws_protocol_vauno_en8822c_check(instance)) {
+                        instance->generic.data = instance->decoder.decode_data;
+                        instance->generic.data_count_bit = instance->decoder.decode_count_bit;
+                        ws_protocol_vauno_en8822c_extract_data(&instance->generic);
+
+                        if(instance->base.callback) {
+                            instance->base.callback(&instance->base, instance->base.context);
+                        }
+                    } else if(instance->decoder.decode_count_bit == 1) {
+                        instance->decoder.parser_step = VaunoEN8822CDecoderStepSaveDuration;
+                    }
+
+                    instance->decoder.decode_data = 0;
+                    instance->decoder.decode_count_bit = 0;
+                } else
+                    instance->decoder.parser_step = VaunoEN8822CDecoderStepReset;
+            } else
+                instance->decoder.parser_step = VaunoEN8822CDecoderStepReset;
+        } else
+            instance->decoder.parser_step = VaunoEN8822CDecoderStepReset;
+        break;
+    }
+}
+
+uint32_t ws_protocol_decoder_vauno_en8822c_get_hash_data(void* context) {
+    furi_assert(context);
+    WSProtocolDecoderVaunoEN8822C* instance = context;
+    return subghz_protocol_blocks_get_hash_data_long(
+        &instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
+}
+
+SubGhzProtocolStatus ws_protocol_decoder_vauno_en8822c_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset) {
+    furi_assert(context);
+    WSProtocolDecoderVaunoEN8822C* instance = context;
+    return ws_block_generic_serialize(&instance->generic, flipper_format, preset);
+}
+
+SubGhzProtocolStatus
+    ws_protocol_decoder_vauno_en8822c_deserialize(void* context, FlipperFormat* flipper_format) {
+    furi_assert(context);
+    WSProtocolDecoderVaunoEN8822C* instance = context;
+    return ws_block_generic_deserialize_check_count_bit(
+        &instance->generic,
+        flipper_format,
+        ws_protocol_vauno_en8822c_const.min_count_bit_for_found);
+}
+
+void ws_protocol_decoder_vauno_en8822c_get_string(void* context, FuriString* output) {
+    furi_assert(context);
+    WSProtocolDecoderVaunoEN8822C* instance = context;
+    ws_block_generic_get_string(&instance->generic, output);
+}