WIP - Implement header(preambula) lookup

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MX 2023-02-15 00:42:28 +03:00
parent 842b497829
commit fc6adcbeb1
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2 changed files with 416 additions and 0 deletions

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#include "revers.h"
#include "../blocks/const.h"
#include "../blocks/decoder.h"
#include "../blocks/encoder.h"
#include "../blocks/generic.h"
#include "../blocks/math.h"
#define TAG "SubGhzProtocolRevers"
static const SubGhzBlockConst subghz_protocol_revers_const = {
.te_short = 200,
.te_long = 430,
.te_delta = 80,
.min_count_bit_for_found = 8,
};
struct SubGhzProtocolDecoderRevers {
SubGhzProtocolDecoderBase base;
SubGhzBlockDecoder decoder;
SubGhzBlockGeneric generic;
uint32_t last_data;
uint16_t header_count;
};
struct SubGhzProtocolEncoderRevers {
SubGhzProtocolEncoderBase base;
SubGhzProtocolBlockEncoder encoder;
SubGhzBlockGeneric generic;
};
typedef enum {
ReversDecoderStepReset = 0,
ReversDecoderStepCheckPreambula,
ReversDecoderStepSaveDuration,
ReversDecoderStepCheckDuration,
} ReversDecoderStep;
const SubGhzProtocolDecoder subghz_protocol_revers_decoder = {
.alloc = subghz_protocol_decoder_revers_alloc,
.free = subghz_protocol_decoder_revers_free,
.feed = subghz_protocol_decoder_revers_feed,
.reset = subghz_protocol_decoder_revers_reset,
.get_hash_data = subghz_protocol_decoder_revers_get_hash_data,
.serialize = subghz_protocol_decoder_revers_serialize,
.deserialize = subghz_protocol_decoder_revers_deserialize,
.get_string = subghz_protocol_decoder_revers_get_string,
};
const SubGhzProtocolEncoder subghz_protocol_revers_encoder = {
.alloc = subghz_protocol_encoder_revers_alloc,
.free = subghz_protocol_encoder_revers_free,
.deserialize = subghz_protocol_encoder_revers_deserialize,
.stop = subghz_protocol_encoder_revers_stop,
.yield = subghz_protocol_encoder_revers_yield,
};
const SubGhzProtocol subghz_protocol_revers = {
.name = SUBGHZ_PROTOCOL_REVERS_NAME,
.type = SubGhzProtocolTypeStatic,
.flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable |
SubGhzProtocolFlag_Load | SubGhzProtocolFlag_Save | SubGhzProtocolFlag_Send,
.decoder = &subghz_protocol_revers_decoder,
.encoder = &subghz_protocol_revers_encoder,
};
void* subghz_protocol_encoder_revers_alloc(SubGhzEnvironment* environment) {
UNUSED(environment);
SubGhzProtocolEncoderRevers* instance = malloc(sizeof(SubGhzProtocolEncoderRevers));
instance->base.protocol = &subghz_protocol_revers;
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_encoder_revers_free(void* context) {
furi_assert(context);
SubGhzProtocolEncoderRevers* instance = context;
free(instance->encoder.upload);
free(instance);
}
/**
* Generating an upload from data.
* @param instance Pointer to a SubGhzProtocolEncoderRevers instance
* @return true On success
*/
static bool subghz_protocol_encoder_revers_get_upload(SubGhzProtocolEncoderRevers* instance) {
furi_assert(instance);
size_t index = 0;
/*size_t size_upload = instance->generic.data_count_bit;
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;
}*/
//Send key data
/*for(uint8_t i = instance->generic.data_count_bit; i > 1; i--) {
if(bit_read(instance->generic.data, i - 1)) {
//send bit 1
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_revers_const.te_short);
instance->encoder.upload[index++] =
level_duration_make(false, (uint32_t)subghz_protocol_revers_const.te_short);
} else {
//send bit 0
instance->encoder.upload[index++] =
level_duration_make(true, (uint32_t)subghz_protocol_revers_const.te_long);
instance->encoder.upload[index++] =
level_duration_make(false, (uint32_t)subghz_protocol_revers_const.te_long);
}
}*/
return true;
}
bool subghz_protocol_encoder_revers_deserialize(void* context, FlipperFormat* flipper_format) {
furi_assert(context);
SubGhzProtocolEncoderRevers* 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_revers_const.min_count_bit_for_found) {
FURI_LOG_E(TAG, "Wrong number of bits in key");
break;
}
//optional parameter parameter
flipper_format_read_uint32(
flipper_format, "Repeat", (uint32_t*)&instance->encoder.repeat, 1);
if(!subghz_protocol_encoder_revers_get_upload(instance)) break;
instance->encoder.is_running = true;
res = true;
} while(false);
return res;
}
void subghz_protocol_encoder_revers_stop(void* context) {
SubGhzProtocolEncoderRevers* instance = context;
instance->encoder.is_running = false;
}
LevelDuration subghz_protocol_encoder_revers_yield(void* context) {
SubGhzProtocolEncoderRevers* 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_revers_alloc(SubGhzEnvironment* environment) {
UNUSED(environment);
SubGhzProtocolDecoderRevers* instance = malloc(sizeof(SubGhzProtocolDecoderRevers));
instance->base.protocol = &subghz_protocol_revers;
instance->generic.protocol_name = instance->base.protocol->name;
return instance;
}
void subghz_protocol_decoder_revers_free(void* context) {
furi_assert(context);
SubGhzProtocolDecoderRevers* instance = context;
free(instance);
}
void subghz_protocol_decoder_revers_reset(void* context) {
furi_assert(context);
SubGhzProtocolDecoderRevers* instance = context;
instance->decoder.parser_step = ReversDecoderStepReset;
instance->last_data = 0;
}
void subghz_protocol_decoder_revers_feed(void* context, bool level, uint32_t duration) {
furi_assert(context);
SubGhzProtocolDecoderRevers* instance = context;
switch(instance->decoder.parser_step) {
case ReversDecoderStepReset:
if((level) && DURATION_DIFF(duration, subghz_protocol_revers_const.te_short) <
subghz_protocol_revers_const.te_delta) {
instance->decoder.parser_step = ReversDecoderStepCheckPreambula;
instance->header_count++;
}
break;
case ReversDecoderStepCheckPreambula:
if((!level) && (DURATION_DIFF(duration, subghz_protocol_revers_const.te_short) <
subghz_protocol_revers_const.te_delta)) {
instance->decoder.parser_step = ReversDecoderStepReset;
break;
}
if((instance->header_count > 2) &&
(DURATION_DIFF(duration, subghz_protocol_revers_const.te_long) <
subghz_protocol_revers_const.te_delta)) {
// Preambula found
instance->decoder.parser_step = ReversDecoderStepSaveDuration;
} else {
instance->decoder.parser_step = ReversDecoderStepReset;
instance->header_count = 0;
}
case ReversDecoderStepSaveDuration:
if(level) {
instance->decoder.te_last = duration;
instance->decoder.parser_step = ReversDecoderStepCheckDuration;
} else {
instance->decoder.parser_step = ReversDecoderStepReset;
}
break;
case ReversDecoderStepCheckDuration:
if(!level) {
/*if((DURATION_DIFF(instance->decoder.te_last, subghz_protocol_revers_const.te_short) <
subghz_protocol_revers_const.te_delta) &&
(DURATION_DIFF(duration, subghz_protocol_revers_const.te_short * 7) <
subghz_protocol_revers_const.te_delta)) {
subghz_protocol_blocks_add_bit(&instance->decoder, 1);
instance->decoder.parser_step = ReversDecoderStepSaveDuration;
} else if(
(DURATION_DIFF(instance->decoder.te_last, subghz_protocol_revers_const.te_long) <
subghz_protocol_revers_const.te_delta) &&
(DURATION_DIFF(duration, subghz_protocol_revers_const.te_long) <
subghz_protocol_revers_const.te_delta)) {
subghz_protocol_blocks_add_bit(&instance->decoder, 0);
instance->decoder.parser_step = ReversDecoderStepSaveDuration;
} else {
instance->decoder.parser_step = ReversDecoderStepReset;
}*/
} else {
instance->decoder.parser_step = ReversDecoderStepReset;
}
break;
}
}
uint8_t subghz_protocol_decoder_revers_get_hash_data(void* context) {
furi_assert(context);
SubGhzProtocolDecoderRevers* instance = context;
return subghz_protocol_blocks_get_hash_data(
&instance->decoder, (instance->decoder.decode_count_bit / 8));
}
bool subghz_protocol_decoder_revers_serialize(
void* context,
FlipperFormat* flipper_format,
SubGhzRadioPreset* preset) {
furi_assert(context);
SubGhzProtocolDecoderRevers* instance = context;
return subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
}
bool subghz_protocol_decoder_revers_deserialize(void* context, FlipperFormat* flipper_format) {
furi_assert(context);
SubGhzProtocolDecoderRevers* instance = context;
bool ret = false;
do {
if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
break;
}
if(instance->generic.data_count_bit !=
subghz_protocol_revers_const.min_count_bit_for_found) {
FURI_LOG_E(TAG, "Wrong number of bits in key");
break;
}
ret = true;
} while(false);
return ret;
}
void subghz_protocol_decoder_revers_get_string(void* context, FuriString* output) {
furi_assert(context);
SubGhzProtocolDecoderRevers* instance = context;
uint32_t data = instance->generic.data & 0xFF;
furi_string_cat_printf(
output,
"%s %dbit\r\n"
"Key:0x%lX\r\n",
instance->generic.protocol_name,
instance->generic.data_count_bit,
data);
}

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#pragma once
#include "base.h"
#define SUBGHZ_PROTOCOL_REVERS_NAME "Revers"
typedef struct SubGhzProtocolDecoderRevers SubGhzProtocolDecoderRevers;
typedef struct SubGhzProtocolEncoderRevers SubGhzProtocolEncoderRevers;
extern const SubGhzProtocolDecoder subghz_protocol_revers_decoder;
extern const SubGhzProtocolEncoder subghz_protocol_revers_encoder;
extern const SubGhzProtocol subghz_protocol_revers;
/**
* Allocate SubGhzProtocolEncoderRevers.
* @param environment Pointer to a SubGhzEnvironment instance
* @return SubGhzProtocolEncoderRevers* pointer to a SubGhzProtocolEncoderRevers instance
*/
void* subghz_protocol_encoder_revers_alloc(SubGhzEnvironment* environment);
/**
* Free SubGhzProtocolEncoderRevers.
* @param context Pointer to a SubGhzProtocolEncoderRevers instance
*/
void subghz_protocol_encoder_revers_free(void* context);
/**
* Deserialize and generating an upload to send.
* @param context Pointer to a SubGhzProtocolEncoderRevers instance
* @param flipper_format Pointer to a FlipperFormat instance
* @return true On success
*/
bool subghz_protocol_encoder_revers_deserialize(void* context, FlipperFormat* flipper_format);
/**
* Forced transmission stop.
* @param context Pointer to a SubGhzProtocolEncoderRevers instance
*/
void subghz_protocol_encoder_revers_stop(void* context);
/**
* Getting the level and duration of the upload to be loaded into DMA.
* @param context Pointer to a SubGhzProtocolEncoderRevers instance
* @return LevelDuration
*/
LevelDuration subghz_protocol_encoder_revers_yield(void* context);
/**
* Allocate SubGhzProtocolDecoderRevers.
* @param environment Pointer to a SubGhzEnvironment instance
* @return SubGhzProtocolDecoderRevers* pointer to a SubGhzProtocolDecoderRevers instance
*/
void* subghz_protocol_decoder_revers_alloc(SubGhzEnvironment* environment);
/**
* Free SubGhzProtocolDecoderRevers.
* @param context Pointer to a SubGhzProtocolDecoderRevers instance
*/
void subghz_protocol_decoder_revers_free(void* context);
/**
* Reset decoder SubGhzProtocolDecoderRevers.
* @param context Pointer to a SubGhzProtocolDecoderRevers instance
*/
void subghz_protocol_decoder_revers_reset(void* context);
/**
* Parse a raw sequence of levels and durations received from the air.
* @param context Pointer to a SubGhzProtocolDecoderRevers instance
* @param level Signal level true-high false-low
* @param duration Duration of this level in, us
*/
void subghz_protocol_decoder_revers_feed(void* context, bool level, uint32_t duration);
/**
* Getting the hash sum of the last randomly received parcel.
* @param context Pointer to a SubGhzProtocolDecoderRevers instance
* @return hash Hash sum
*/
uint8_t subghz_protocol_decoder_revers_get_hash_data(void* context);
/**
* Serialize data SubGhzProtocolDecoderRevers.
* @param context Pointer to a SubGhzProtocolDecoderRevers instance
* @param flipper_format Pointer to a FlipperFormat instance
* @param preset The modulation on which the signal was received, SubGhzRadioPreset
* @return true On success
*/
bool subghz_protocol_decoder_revers_serialize(
void* context,
FlipperFormat* flipper_format,
SubGhzRadioPreset* preset);
/**
* Deserialize data SubGhzProtocolDecoderRevers.
* @param context Pointer to a SubGhzProtocolDecoderRevers instance
* @param flipper_format Pointer to a FlipperFormat instance
* @return true On success
*/
bool subghz_protocol_decoder_revers_deserialize(void* context, FlipperFormat* flipper_format);
/**
* Getting a textual representation of the received data.
* @param context Pointer to a SubGhzProtocolDecoderRevers instance
* @param output Resulting text
*/
void subghz_protocol_decoder_revers_get_string(void* context, FuriString* output);