flipperzero-firmware/lib/subghz/protocols/scher_khan.c
Georgii Surkov 8582670a34
[FL-2811] Fix PVS-Studio warnings (#2142)
Co-authored-by: あく <alleteam@gmail.com>
Co-authored-by: gornekich <n.gorbadey@gmail.com>
2022-12-26 21:13:30 +09:00

288 lines
11 KiB
C

#include "scher_khan.h"
#include "../blocks/const.h"
#include "../blocks/decoder.h"
#include "../blocks/encoder.h"
#include "../blocks/generic.h"
#include "../blocks/math.h"
//https://phreakerclub.com/72
//https://phreakerclub.com/forum/showthread.php?t=7&page=2
//https://phreakerclub.com/forum/showthread.php?t=274&highlight=magicar
//!!! https://phreakerclub.com/forum/showthread.php?t=489&highlight=magicar&page=5
#define TAG "SubGhzProtocolScherKhan"
static const SubGhzBlockConst subghz_protocol_scher_khan_const = {
.te_short = 750,
.te_long = 1100,
.te_delta = 150,
.min_count_bit_for_found = 35,
};
struct SubGhzProtocolDecoderScherKhan {
SubGhzProtocolDecoderBase base;
SubGhzBlockDecoder decoder;
SubGhzBlockGeneric generic;
uint16_t header_count;
const char* protocol_name;
};
struct SubGhzProtocolEncoderScherKhan {
SubGhzProtocolEncoderBase base;
SubGhzProtocolBlockEncoder encoder;
SubGhzBlockGeneric generic;
};
typedef enum {
ScherKhanDecoderStepReset = 0,
ScherKhanDecoderStepCheckPreambula,
ScherKhanDecoderStepSaveDuration,
ScherKhanDecoderStepCheckDuration,
} ScherKhanDecoderStep;
const SubGhzProtocolDecoder subghz_protocol_scher_khan_decoder = {
.alloc = subghz_protocol_decoder_scher_khan_alloc,
.free = subghz_protocol_decoder_scher_khan_free,
.feed = subghz_protocol_decoder_scher_khan_feed,
.reset = subghz_protocol_decoder_scher_khan_reset,
.get_hash_data = subghz_protocol_decoder_scher_khan_get_hash_data,
.serialize = subghz_protocol_decoder_scher_khan_serialize,
.deserialize = subghz_protocol_decoder_scher_khan_deserialize,
.get_string = subghz_protocol_decoder_scher_khan_get_string,
};
const SubGhzProtocolEncoder subghz_protocol_scher_khan_encoder = {
.alloc = NULL,
.free = NULL,
.deserialize = NULL,
.stop = NULL,
.yield = NULL,
};
const SubGhzProtocol subghz_protocol_scher_khan = {
.name = SUBGHZ_PROTOCOL_SCHER_KHAN_NAME,
.type = SubGhzProtocolTypeDynamic,
.flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_FM | SubGhzProtocolFlag_Decodable,
.decoder = &subghz_protocol_scher_khan_decoder,
.encoder = &subghz_protocol_scher_khan_encoder,
};
void* subghz_protocol_decoder_scher_khan_alloc(SubGhzEnvironment* environment) {
UNUSED(environment);
SubGhzProtocolDecoderScherKhan* instance = malloc(sizeof(SubGhzProtocolDecoderScherKhan));
instance->base.protocol = &subghz_protocol_scher_khan;
instance->generic.protocol_name = instance->base.protocol->name;
return instance;
}
void subghz_protocol_decoder_scher_khan_free(void* context) {
furi_assert(context);
SubGhzProtocolDecoderScherKhan* instance = context;
free(instance);
}
void subghz_protocol_decoder_scher_khan_reset(void* context) {
furi_assert(context);
SubGhzProtocolDecoderScherKhan* instance = context;
instance->decoder.parser_step = ScherKhanDecoderStepReset;
}
void subghz_protocol_decoder_scher_khan_feed(void* context, bool level, uint32_t duration) {
furi_assert(context);
SubGhzProtocolDecoderScherKhan* instance = context;
switch(instance->decoder.parser_step) {
case ScherKhanDecoderStepReset:
if((level) && (DURATION_DIFF(duration, subghz_protocol_scher_khan_const.te_short * 2) <
subghz_protocol_scher_khan_const.te_delta)) {
instance->decoder.parser_step = ScherKhanDecoderStepCheckPreambula;
instance->decoder.te_last = duration;
instance->header_count = 0;
}
break;
case ScherKhanDecoderStepCheckPreambula:
if(level) {
if((DURATION_DIFF(duration, subghz_protocol_scher_khan_const.te_short * 2) <
subghz_protocol_scher_khan_const.te_delta) ||
(DURATION_DIFF(duration, subghz_protocol_scher_khan_const.te_short) <
subghz_protocol_scher_khan_const.te_delta)) {
instance->decoder.te_last = duration;
} else {
instance->decoder.parser_step = ScherKhanDecoderStepReset;
}
} else if(
(DURATION_DIFF(duration, subghz_protocol_scher_khan_const.te_short * 2) <
subghz_protocol_scher_khan_const.te_delta) ||
(DURATION_DIFF(duration, subghz_protocol_scher_khan_const.te_short) <
subghz_protocol_scher_khan_const.te_delta)) {
if(DURATION_DIFF(
instance->decoder.te_last, subghz_protocol_scher_khan_const.te_short * 2) <
subghz_protocol_scher_khan_const.te_delta) {
// Found header
instance->header_count++;
break;
} else if(
DURATION_DIFF(
instance->decoder.te_last, subghz_protocol_scher_khan_const.te_short) <
subghz_protocol_scher_khan_const.te_delta) {
// Found start bit
if(instance->header_count >= 2) {
instance->decoder.parser_step = ScherKhanDecoderStepSaveDuration;
instance->decoder.decode_data = 0;
instance->decoder.decode_count_bit = 1;
} else {
instance->decoder.parser_step = ScherKhanDecoderStepReset;
}
} else {
instance->decoder.parser_step = ScherKhanDecoderStepReset;
}
} else {
instance->decoder.parser_step = ScherKhanDecoderStepReset;
}
break;
case ScherKhanDecoderStepSaveDuration:
if(level) {
if(duration >= (subghz_protocol_scher_khan_const.te_delta * 2UL +
subghz_protocol_scher_khan_const.te_long)) {
//Found stop bit
instance->decoder.parser_step = ScherKhanDecoderStepReset;
if(instance->decoder.decode_count_bit >=
subghz_protocol_scher_khan_const.min_count_bit_for_found) {
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;
break;
} else {
instance->decoder.te_last = duration;
instance->decoder.parser_step = ScherKhanDecoderStepCheckDuration;
}
} else {
instance->decoder.parser_step = ScherKhanDecoderStepReset;
}
break;
case ScherKhanDecoderStepCheckDuration:
if(!level) {
if((DURATION_DIFF(
instance->decoder.te_last, subghz_protocol_scher_khan_const.te_short) <
subghz_protocol_scher_khan_const.te_delta) &&
(DURATION_DIFF(duration, subghz_protocol_scher_khan_const.te_short) <
subghz_protocol_scher_khan_const.te_delta)) {
subghz_protocol_blocks_add_bit(&instance->decoder, 0);
instance->decoder.parser_step = ScherKhanDecoderStepSaveDuration;
} else if(
(DURATION_DIFF(
instance->decoder.te_last, subghz_protocol_scher_khan_const.te_long) <
subghz_protocol_scher_khan_const.te_delta) &&
(DURATION_DIFF(duration, subghz_protocol_scher_khan_const.te_long) <
subghz_protocol_scher_khan_const.te_delta)) {
subghz_protocol_blocks_add_bit(&instance->decoder, 1);
instance->decoder.parser_step = ScherKhanDecoderStepSaveDuration;
} else {
instance->decoder.parser_step = ScherKhanDecoderStepReset;
}
} else {
instance->decoder.parser_step = ScherKhanDecoderStepReset;
}
break;
}
}
/**
* Analysis of received data
* @param instance Pointer to a SubGhzBlockGeneric* instance
* @param protocol_name
*/
static void subghz_protocol_scher_khan_check_remote_controller(
SubGhzBlockGeneric* instance,
const char** protocol_name) {
/*
* MAGICAR 51 bit 00000001A99121DE83C3 MAGIC CODE, Dynamic
* 0E8C1619E830C -> 000011101000110000010110 0001 1001 1110 1000001100001100
* 0E8C1629D830D -> 000011101000110000010110 0010 1001 1101 1000001100001101
* 0E8C1649B830E -> 000011101000110000010110 0100 1001 1011 1000001100001110
* 0E8C16897830F -> 000011101000110000010110 1000 1001 0111 1000001100001111
* Serial Key Ser ~Key CNT
*/
switch(instance->data_count_bit) {
// case 35: //MAGIC CODE, Static
// instance->protocol_name = "MAGIC CODE, Static";
// break;
case 51: //MAGIC CODE, Dynamic
*protocol_name = "MAGIC CODE, Dynamic";
instance->serial = ((instance->data >> 24) & 0xFFFFFF0) | ((instance->data >> 20) & 0x0F);
instance->btn = (instance->data >> 24) & 0x0F;
instance->cnt = instance->data & 0xFFFF;
break;
// case 57: //MAGIC CODE PRO / PRO2
// instance->protocol_name = "MAGIC CODE PRO / PRO2";
// break;
default:
*protocol_name = "Unknown";
instance->serial = 0;
instance->btn = 0;
instance->cnt = 0;
break;
}
}
uint8_t subghz_protocol_decoder_scher_khan_get_hash_data(void* context) {
furi_assert(context);
SubGhzProtocolDecoderScherKhan* instance = context;
return subghz_protocol_blocks_get_hash_data(
&instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
}
bool subghz_protocol_decoder_scher_khan_serialize(
void* context,
FlipperFormat* flipper_format,
SubGhzRadioPreset* preset) {
furi_assert(context);
SubGhzProtocolDecoderScherKhan* instance = context;
return subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
}
bool subghz_protocol_decoder_scher_khan_deserialize(void* context, FlipperFormat* flipper_format) {
furi_assert(context);
SubGhzProtocolDecoderScherKhan* instance = context;
return subghz_block_generic_deserialize(&instance->generic, flipper_format);
}
void subghz_protocol_decoder_scher_khan_get_string(void* context, FuriString* output) {
furi_assert(context);
SubGhzProtocolDecoderScherKhan* instance = context;
subghz_protocol_scher_khan_check_remote_controller(
&instance->generic, &instance->protocol_name);
furi_string_cat_printf(
output,
"%s %dbit\r\n"
"Key:0x%lX%08lX\r\n"
"Sn:%07lX Btn:%X Cnt:%04lX\r\n"
"Pt: %s\r\n",
instance->generic.protocol_name,
instance->generic.data_count_bit,
(uint32_t)(instance->generic.data >> 32),
(uint32_t)instance->generic.data,
instance->generic.serial,
instance->generic.btn,
instance->generic.cnt,
instance->protocol_name);
}