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unleashed-firmware/lib/subghz/protocols/magellan.c

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#include "magellan.h"
#include "../blocks/const.h"
#include "../blocks/decoder.h"
#include "../blocks/encoder.h"
#include "../blocks/generic.h"
#include "../blocks/math.h"
#define TAG "SubGhzProtocolMagellan"
static const SubGhzBlockConst subghz_protocol_magellan_const = {
.te_short = 200,
.te_long = 400,
.te_delta = 100,
.min_count_bit_for_found = 32,
};
struct SubGhzProtocolDecoderMagellan {
SubGhzProtocolDecoderBase base;
SubGhzBlockDecoder decoder;
SubGhzBlockGeneric generic;
uint16_t header_count;
};
struct SubGhzProtocolEncoderMagellan {
SubGhzProtocolEncoderBase base;
SubGhzProtocolBlockEncoder encoder;
SubGhzBlockGeneric generic;
};
typedef enum {
MagellanDecoderStepReset = 0,
MagellanDecoderStepCheckPreambula,
MagellanDecoderStepFoundPreambula,
MagellanDecoderStepSaveDuration,
MagellanDecoderStepCheckDuration,
} MagellanDecoderStep;
const SubGhzProtocolDecoder subghz_protocol_magellan_decoder = {
.alloc = subghz_protocol_decoder_magellan_alloc,
.free = subghz_protocol_decoder_magellan_free,
.feed = subghz_protocol_decoder_magellan_feed,
.reset = subghz_protocol_decoder_magellan_reset,
.get_hash_data = subghz_protocol_decoder_magellan_get_hash_data,
.serialize = subghz_protocol_decoder_magellan_serialize,
.deserialize = subghz_protocol_decoder_magellan_deserialize,
.get_string = subghz_protocol_decoder_magellan_get_string,
};
const SubGhzProtocolEncoder subghz_protocol_magellan_encoder = {
.alloc = subghz_protocol_encoder_magellan_alloc,
.free = subghz_protocol_encoder_magellan_free,
.deserialize = subghz_protocol_encoder_magellan_deserialize,
.stop = subghz_protocol_encoder_magellan_stop,
.yield = subghz_protocol_encoder_magellan_yield,
};
const SubGhzProtocol subghz_protocol_magellan = {
.name = SUBGHZ_PROTOCOL_MAGELLAN_NAME,
.type = SubGhzProtocolTypeStatic,
.flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable |
SubGhzProtocolFlag_Load | SubGhzProtocolFlag_Save | SubGhzProtocolFlag_Send |
SubGhzProtocolFlag_Magellan,
.decoder = &subghz_protocol_magellan_decoder,
.encoder = &subghz_protocol_magellan_encoder,
};
void* subghz_protocol_encoder_magellan_alloc(SubGhzEnvironment* environment) {
UNUSED(environment);
SubGhzProtocolEncoderMagellan* instance = malloc(sizeof(SubGhzProtocolEncoderMagellan));
instance->base.protocol = &subghz_protocol_magellan;
instance->generic.protocol_name = instance->base.protocol->name;
instance->encoder.repeat = 10;
instance->encoder.size_upload = 256;
instance->encoder.upload = malloc(instance->encoder.size_upload * sizeof(LevelDuration));
instance->encoder.is_running = false;
return instance;
}
void subghz_protocol_encoder_magellan_free(void* context) {
furi_assert(context);
SubGhzProtocolEncoderMagellan* instance = context;
free(instance->encoder.upload);
free(instance);
}
/**
* Generating an upload from data.
* @param instance Pointer to a SubGhzProtocolEncoderMagellan instance
* @return true On success
*/
static bool subghz_protocol_encoder_magellan_get_upload(SubGhzProtocolEncoderMagellan* instance) {
furi_assert(instance);
size_t index = 0;
//Send header
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_magellan_const.te_short * 4);
instance->encoder.upload[index++] =
level_duration_make(false, (uint32_t)subghz_protocol_magellan_const.te_short);
for(uint8_t i = 0; i < 12; i++) {
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_magellan_const.te_short);
instance->encoder.upload[index++] =
level_duration_make(false, (uint32_t)subghz_protocol_magellan_const.te_short);
}
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_magellan_const.te_short);
instance->encoder.upload[index++] =
level_duration_make(false, (uint32_t)subghz_protocol_magellan_const.te_long);
//Send start bit
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_magellan_const.te_long * 3);
instance->encoder.upload[index++] =
level_duration_make(false, (uint32_t)subghz_protocol_magellan_const.te_long);
//Send key data
for(uint8_t i = instance->generic.data_count_bit; i > 0; i--) {
if(bit_read(instance->generic.data, i - 1)) {
//send bit 1
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_magellan_const.te_short);
instance->encoder.upload[index++] =
level_duration_make(false, (uint32_t)subghz_protocol_magellan_const.te_long);
} else {
//send bit 0
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_magellan_const.te_long);
instance->encoder.upload[index++] =
level_duration_make(false, (uint32_t)subghz_protocol_magellan_const.te_short);
}
}
//Send stop bit
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_magellan_const.te_short);
instance->encoder.upload[index++] =
level_duration_make(false, (uint32_t)subghz_protocol_magellan_const.te_long * 100);
instance->encoder.size_upload = index;
return true;
}
SubGhzProtocolStatus
subghz_protocol_encoder_magellan_deserialize(void* context, FlipperFormat* flipper_format) {
furi_assert(context);
SubGhzProtocolEncoderMagellan* instance = context;
SubGhzProtocolStatus ret = SubGhzProtocolStatusError;
do {
ret = subghz_block_generic_deserialize_check_count_bit(
&instance->generic,
flipper_format,
subghz_protocol_magellan_const.min_count_bit_for_found);
if(ret != SubGhzProtocolStatusOk) {
break;
}
//optional parameter parameter
flipper_format_read_uint32(
flipper_format, "Repeat", (uint32_t*)&instance->encoder.repeat, 1);
if(!subghz_protocol_encoder_magellan_get_upload(instance)) {
ret = SubGhzProtocolStatusErrorEncoderGetUpload;
break;
}
instance->encoder.is_running = true;
} while(false);
return ret;
}
void subghz_protocol_encoder_magellan_stop(void* context) {
SubGhzProtocolEncoderMagellan* instance = context;
instance->encoder.is_running = false;
}
LevelDuration subghz_protocol_encoder_magellan_yield(void* context) {
SubGhzProtocolEncoderMagellan* 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;
}
void* subghz_protocol_decoder_magellan_alloc(SubGhzEnvironment* environment) {
UNUSED(environment);
SubGhzProtocolDecoderMagellan* instance = malloc(sizeof(SubGhzProtocolDecoderMagellan));
instance->base.protocol = &subghz_protocol_magellan;
instance->generic.protocol_name = instance->base.protocol->name;
return instance;
}
void subghz_protocol_decoder_magellan_free(void* context) {
furi_assert(context);
SubGhzProtocolDecoderMagellan* instance = context;
free(instance);
}
void subghz_protocol_decoder_magellan_reset(void* context) {
furi_assert(context);
SubGhzProtocolDecoderMagellan* instance = context;
instance->decoder.parser_step = MagellanDecoderStepReset;
}
uint8_t subghz_protocol_magellan_crc8(uint8_t* data, size_t len) {
uint8_t crc = 0x00;
size_t i, j;
for(i = 0; i < len; i++) {
crc ^= data[i];
for(j = 0; j < 8; j++) {
if((crc & 0x80) != 0)
crc = (uint8_t)((crc << 1) ^ 0x31);
else
crc <<= 1;
}
}
return crc;
}
static bool subghz_protocol_magellan_check_crc(SubGhzProtocolDecoderMagellan* instance) {
uint8_t data[3] = {
instance->decoder.decode_data >> 24,
instance->decoder.decode_data >> 16,
instance->decoder.decode_data >> 8};
return (instance->decoder.decode_data & 0xFF) ==
subghz_protocol_magellan_crc8(data, sizeof(data));
}
void subghz_protocol_decoder_magellan_feed(void* context, bool level, uint32_t duration) {
furi_assert(context);
SubGhzProtocolDecoderMagellan* instance = context;
switch(instance->decoder.parser_step) {
case MagellanDecoderStepReset:
if((level) && (DURATION_DIFF(duration, subghz_protocol_magellan_const.te_short) <
subghz_protocol_magellan_const.te_delta)) {
instance->decoder.parser_step = MagellanDecoderStepCheckPreambula;
instance->decoder.te_last = duration;
instance->header_count = 0;
}
break;
case MagellanDecoderStepCheckPreambula:
if(level) {
instance->decoder.te_last = duration;
} else {
if((DURATION_DIFF(instance->decoder.te_last, subghz_protocol_magellan_const.te_short) <
subghz_protocol_magellan_const.te_delta) &&
(DURATION_DIFF(duration, subghz_protocol_magellan_const.te_short) <
subghz_protocol_magellan_const.te_delta)) {
// Found header
instance->header_count++;
} else if(
(DURATION_DIFF(instance->decoder.te_last, subghz_protocol_magellan_const.te_short) <
subghz_protocol_magellan_const.te_delta) &&
(DURATION_DIFF(duration, subghz_protocol_magellan_const.te_long) <
subghz_protocol_magellan_const.te_delta * 2) &&
(instance->header_count > 10)) {
instance->decoder.parser_step = MagellanDecoderStepFoundPreambula;
} else {
instance->decoder.parser_step = MagellanDecoderStepReset;
}
}
break;
case MagellanDecoderStepFoundPreambula:
if(level) {
instance->decoder.te_last = duration;
} else {
if((DURATION_DIFF(
instance->decoder.te_last, subghz_protocol_magellan_const.te_short * 6) <
subghz_protocol_magellan_const.te_delta * 3) &&
(DURATION_DIFF(duration, subghz_protocol_magellan_const.te_long) <
subghz_protocol_magellan_const.te_delta * 2)) {
instance->decoder.parser_step = MagellanDecoderStepSaveDuration;
instance->decoder.decode_data = 0;
instance->decoder.decode_count_bit = 0;
} else {
instance->decoder.parser_step = MagellanDecoderStepReset;
}
}
break;
case MagellanDecoderStepSaveDuration:
if(level) {
instance->decoder.te_last = duration;
instance->decoder.parser_step = MagellanDecoderStepCheckDuration;
} else {
instance->decoder.parser_step = MagellanDecoderStepReset;
}
break;
case MagellanDecoderStepCheckDuration:
if(!level) {
if((DURATION_DIFF(instance->decoder.te_last, subghz_protocol_magellan_const.te_short) <
subghz_protocol_magellan_const.te_delta) &&
(DURATION_DIFF(duration, subghz_protocol_magellan_const.te_long) <
subghz_protocol_magellan_const.te_delta)) {
subghz_protocol_blocks_add_bit(&instance->decoder, 1);
instance->decoder.parser_step = MagellanDecoderStepSaveDuration;
} else if(
(DURATION_DIFF(instance->decoder.te_last, subghz_protocol_magellan_const.te_long) <
subghz_protocol_magellan_const.te_delta) &&
(DURATION_DIFF(duration, subghz_protocol_magellan_const.te_short) <
subghz_protocol_magellan_const.te_delta)) {
subghz_protocol_blocks_add_bit(&instance->decoder, 0);
instance->decoder.parser_step = MagellanDecoderStepSaveDuration;
} else if(duration >= (subghz_protocol_magellan_const.te_long * 3)) {
//Found stop bit
if((instance->decoder.decode_count_bit ==
subghz_protocol_magellan_const.min_count_bit_for_found) &&
subghz_protocol_magellan_check_crc(instance)) {
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;
instance->decoder.parser_step = MagellanDecoderStepReset;
} else {
instance->decoder.parser_step = MagellanDecoderStepReset;
}
} else {
instance->decoder.parser_step = MagellanDecoderStepReset;
}
break;
}
}
/**
* Analysis of received data
* @param instance Pointer to a SubGhzBlockGeneric* instance
*/
static void subghz_protocol_magellan_check_remote_controller(SubGhzBlockGeneric* instance) {
/*
* package 32b data 24b CRC8
* 0x037AE4828 => 001101111010111001001000 00101000
*
* 0x037AE48 (flipped in reverse bit sequence) => 0x1275EC
*
* 0x1275EC => 0x12-event codes, 0x75EC-serial (dec 117236)
*
* event codes
* bit_0: 1-Open/Motion, 0-close/ok
* bit_1: 1-Tamper On (alarm), 0-Tamper Off (ok)
* bit_2: ?
* bit_3: 1-power on
* bit_4: model type - wireless reed
* bit_5: model type - motion sensor
* bit_6: ?
* bit_7: ?
*
*/
uint64_t data_rev = subghz_protocol_blocks_reverse_key(instance->data >> 8, 24);
instance->serial = data_rev & 0xFFFF;
instance->btn = (data_rev >> 16) & 0xFF;
}
static void subghz_protocol_magellan_get_event_serialize(uint8_t event, FuriString* output) {
furi_string_cat_printf(
output,
"%s%s%s%s%s%s%s%s",
((event >> 4) & 0x1 ? (event & 0x1 ? " Open" : " Close") :
(event & 0x1 ? " Motion" : " Ok")),
((event >> 1) & 0x1 ? ", Tamper On\n(Alarm)" : ""),
((event >> 2) & 0x1 ? ", ?" : ""),
((event >> 3) & 0x1 ? ", Power On" : ""),
((event >> 4) & 0x1 ? ", MT:Wireless_Reed" : ""),
((event >> 5) & 0x1 ? ", MT:Motion_\nSensor" : ""),
((event >> 6) & 0x1 ? ", ?" : ""),
((event >> 7) & 0x1 ? ", ?" : ""));
}
uint8_t subghz_protocol_decoder_magellan_get_hash_data(void* context) {
furi_assert(context);
SubGhzProtocolDecoderMagellan* instance = context;
return subghz_protocol_blocks_get_hash_data(
&instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
}
SubGhzProtocolStatus subghz_protocol_decoder_magellan_serialize(
void* context,
FlipperFormat* flipper_format,
SubGhzRadioPreset* preset) {
furi_assert(context);
SubGhzProtocolDecoderMagellan* instance = context;
return subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
}
SubGhzProtocolStatus
subghz_protocol_decoder_magellan_deserialize(void* context, FlipperFormat* flipper_format) {
furi_assert(context);
SubGhzProtocolDecoderMagellan* instance = context;
return subghz_block_generic_deserialize_check_count_bit(
&instance->generic,
flipper_format,
subghz_protocol_magellan_const.min_count_bit_for_found);
}
void subghz_protocol_decoder_magellan_get_string(void* context, FuriString* output) {
furi_assert(context);
SubGhzProtocolDecoderMagellan* instance = context;
subghz_protocol_magellan_check_remote_controller(&instance->generic);
furi_string_cat_printf(
output,
"%s %dbit\r\n"
"Key:0x%08lX\r\n"
"Sn:%03ld%03ld, Event:0x%02X\r\n"
"Stat:",
instance->generic.protocol_name,
instance->generic.data_count_bit,
(uint32_t)(instance->generic.data & 0xFFFFFFFF),
(instance->generic.serial >> 8) & 0xFF,
instance->generic.serial & 0xFF,
instance->generic.btn);
subghz_protocol_magellan_get_event_serialize(instance->generic.btn, output);
}
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