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flipperzero-firmware/lib/subghz/protocols/subghz_protocol_scher_khan.c
SG 274c12fc56
[FL-2274] Inventing streams and moving FFF to them (#981) 
* Streams: string stream
* String stream: updated insert/delete api
* Streams: generic stream interface and string stream implementation
* Streams: helpers for insert and delete_and_insert
* FFF: now compatible with streams
* MinUnit: introduced tests with arguments
* FFF: stream access violation
* Streams: copy data between streams
* Streams: file stream
* FFF: documentation
* FFStream: documentation
* FFF: alloc as file
* MinUnit: support for nested tests
* Streams: changed delete_and_insert, now it returns success flag. Added ability dump stream inner parameters and data to cout.
* FFF: simplified file open function
* Streams: unit tests
* FFF: tests
* Streams: declare cache_size constant as define, to allow variable modified arrays
* FFF: lib moved to a separate folder
* iButton: new FFF
* RFID: new FFF
* Animations: new FFF
* IR: new FFF
* NFC: new FFF
* Flipper file format: delete lib
* U2F: new FFF
* Subghz: new FFF and streams
* Streams: read line
* Streams: split
* FuriCore: implement memset with extra asserts
* FuriCore: implement extra heap asserts without inventing memset
* Scene manager: protected access to the scene id stack with a size check
* NFC worker: dirty fix for issue where hal_nfc was busy on app start
* Furi: update allocator to erase memory on allocation. Replace furi_alloc with malloc.
* FuriCore: cleanup memmgr code.
* Furi HAL: furi_hal_init is split into critical and non-critical parts. The critical part is currently clock and console.
* Memmgr: added ability to track allocations and deallocations through console.
* FFStream: some speedup
* Streams, FF: minor fixes
* Tests: restore
* File stream: a slightly more thread-safe version of file_stream_delete_and_insert

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
2022-02-18 22:53:46 +03:00

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#include "subghz_protocol_scher_khan.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
struct SubGhzProtocolScherKhan {
SubGhzProtocolCommon common;
const char* protocol_name;
};
typedef enum {
ScherKhanDecoderStepReset = 0,
ScherKhanDecoderStepCheckPreambula,
ScherKhanDecoderStepSaveDuration,
ScherKhanDecoderStepCheckDuration,
} ScherKhanDecoderStep;
SubGhzProtocolScherKhan* subghz_protocol_scher_khan_alloc(void) {
SubGhzProtocolScherKhan* instance = malloc(sizeof(SubGhzProtocolScherKhan));
instance->common.name = "Scher-Khan";
instance->common.code_min_count_bit_for_found = 35;
instance->common.te_short = 750;
instance->common.te_long = 1100;
instance->common.te_delta = 150;
instance->common.type_protocol = SubGhzProtocolCommonTypeDynamic;
instance->common.to_string = (SubGhzProtocolCommonToStr)subghz_protocol_scher_khan_to_str;
instance->common.to_load_protocol =
(SubGhzProtocolCommonLoadFromRAW)subghz_decoder_scher_khan_to_load_protocol;
return instance;
}
void subghz_protocol_scher_khan_free(SubGhzProtocolScherKhan* instance) {
furi_assert(instance);
free(instance);
}
/** Send bit
*
* @param instance - SubGhzProtocolScherKhan instance
* @param bit - bit
*/
// void subghz_protocol_scher_khan_send_bit(SubGhzProtocolScherKhan* instance, uint8_t bit) {
// if(bit) {
// //send bit 1
// SUBGHZ_TX_PIN_HIGH();
// delay_us(instance->common.te_long);
// SUBGHZ_TX_PIN_LOW();
// delay_us(instance->common.te_short);
// } else {
// //send bit 0
// SUBGHZ_TX_PIN_HIGH();
// delay_us(instance->common.te_short);
// SUBGHZ_TX_PIN_LOW();
// delay_us(instance->common.te_long);
// }
// }
// void subghz_protocol_scher_khan_send_key(
// SubGhzProtocolScherKhan* instance,
// uint64_t key,
// uint8_t bit,
// uint8_t repeat) {
// while(repeat--) {
// SUBGHZ_TX_PIN_HIGH();
// //Send header
// delay_us(instance->common.te_long * 2);
// SUBGHZ_TX_PIN_LOW();
// delay_us(instance->common.te_long * 2);
// //Send key data
// for(uint8_t i = bit; i > 0; i--) {
// subghz_protocol_scher_khan_send_bit(instance, bit_read(key, i - 1));
// }
// }
// }
void subghz_protocol_scher_khan_reset(SubGhzProtocolScherKhan* instance) {
instance->common.parser_step = ScherKhanDecoderStepReset;
}
/** Analysis of received data
*
* @param instance SubGhzProtocolScherKhan instance
*/
void subghz_protocol_scher_khan_check_remote_controller(SubGhzProtocolScherKhan* instance) {
/*
* MAGICAR 51 bit 00000001A99121DE83C3 MAGIC CODE, Dinamic
* 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->common.code_last_count_bit) {
// case 35: //MAGIC CODE, Static
// instance->protocol_name = "MAGIC CODE, Static";
// break;
case 51: //MAGIC CODE, Dinamic
instance->protocol_name = "MAGIC CODE, Dinamic";
instance->common.serial = ((instance->common.code_last_found >> 24) & 0xFFFFFF0) |
((instance->common.code_last_found >> 20) & 0x0F);
instance->common.btn = (instance->common.code_last_found >> 24) & 0x0F;
instance->common.cnt = instance->common.code_last_found & 0xFFFF;
break;
// case 57: //MAGIC CODE PRO / PRO2
// instance->protocol_name = "MAGIC CODE PRO / PRO2";
// break;
default:
instance->protocol_name = "Unknown";
instance->common.serial = 0;
instance->common.btn = 0;
instance->common.cnt = 0;
break;
}
}
void subghz_protocol_scher_khan_parse(
SubGhzProtocolScherKhan* instance,
bool level,
uint32_t duration) {
switch(instance->common.parser_step) {
case ScherKhanDecoderStepReset:
if((level) &&
(DURATION_DIFF(duration, instance->common.te_short * 2) < instance->common.te_delta)) {
instance->common.parser_step = ScherKhanDecoderStepCheckPreambula;
instance->common.te_last = duration;
instance->common.header_count = 0;
}
break;
case ScherKhanDecoderStepCheckPreambula:
if(level) {
if((DURATION_DIFF(duration, instance->common.te_short * 2) <
instance->common.te_delta) ||
(DURATION_DIFF(duration, instance->common.te_short) < instance->common.te_delta)) {
instance->common.te_last = duration;
} else {
instance->common.parser_step = ScherKhanDecoderStepReset;
}
} else if(
(DURATION_DIFF(duration, instance->common.te_short * 2) < instance->common.te_delta) ||
(DURATION_DIFF(duration, instance->common.te_short) < instance->common.te_delta)) {
if(DURATION_DIFF(instance->common.te_last, instance->common.te_short * 2) <
instance->common.te_delta) {
// Found header
instance->common.header_count++;
break;
} else if(
DURATION_DIFF(instance->common.te_last, instance->common.te_short) <
instance->common.te_delta) {
// Found start bit
if(instance->common.header_count >= 2) {
instance->common.parser_step = ScherKhanDecoderStepSaveDuration;
instance->common.code_found = 0;
instance->common.code_count_bit = 1;
} else {
instance->common.parser_step = ScherKhanDecoderStepReset;
}
} else {
instance->common.parser_step = ScherKhanDecoderStepReset;
}
} else {
instance->common.parser_step = ScherKhanDecoderStepReset;
}
break;
case ScherKhanDecoderStepSaveDuration:
if(level) {
if(duration >= (instance->common.te_long + instance->common.te_delta * 2)) {
//Found stop bit
instance->common.parser_step = ScherKhanDecoderStepReset;
if(instance->common.code_count_bit >=
instance->common.code_min_count_bit_for_found) {
instance->common.code_last_found = instance->common.code_found;
instance->common.code_last_count_bit = instance->common.code_count_bit;
if(instance->common.callback)
instance->common.callback(
(SubGhzProtocolCommon*)instance, instance->common.context);
}
instance->common.code_found = 0;
instance->common.code_count_bit = 0;
break;
} else {
instance->common.te_last = duration;
instance->common.parser_step = ScherKhanDecoderStepCheckDuration;
}
} else {
instance->common.parser_step = ScherKhanDecoderStepReset;
}
break;
case ScherKhanDecoderStepCheckDuration:
if(!level) {
if((DURATION_DIFF(instance->common.te_last, instance->common.te_short) <
instance->common.te_delta) &&
(DURATION_DIFF(duration, instance->common.te_short) < instance->common.te_delta)) {
subghz_protocol_common_add_bit(&instance->common, 0);
instance->common.parser_step = ScherKhanDecoderStepSaveDuration;
} else if(
(DURATION_DIFF(instance->common.te_last, instance->common.te_long) <
instance->common.te_delta) &&
(DURATION_DIFF(duration, instance->common.te_long) < instance->common.te_delta)) {
subghz_protocol_common_add_bit(&instance->common, 1);
instance->common.parser_step = ScherKhanDecoderStepSaveDuration;
} else {
instance->common.parser_step = ScherKhanDecoderStepReset;
}
} else {
instance->common.parser_step = ScherKhanDecoderStepReset;
}
break;
}
}
void subghz_protocol_scher_khan_to_str(SubGhzProtocolScherKhan* instance, string_t output) {
subghz_protocol_scher_khan_check_remote_controller(instance);
string_cat_printf(
output,
"%s %dbit\r\n"
"Key:0x%lX%08lX\r\n"
"Sn:%07lX Btn:%lX Cnt:%04X\r\n"
"Pt: %s\r\n",
instance->common.name,
instance->common.code_last_count_bit,
(uint32_t)(instance->common.code_last_found >> 32),
(uint32_t)instance->common.code_last_found,
instance->common.serial,
instance->common.btn,
instance->common.cnt,
instance->protocol_name);
}
void subghz_decoder_scher_khan_to_load_protocol(SubGhzProtocolScherKhan* instance, void* context) {
furi_assert(context);
furi_assert(instance);
SubGhzProtocolCommonLoad* data = context;
instance->common.code_last_found = data->code_found;
instance->common.code_last_count_bit = data->code_count_bit;
subghz_protocol_scher_khan_check_remote_controller(instance);
}
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