mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-12-20 17:53:20 +00:00
231 lines
8.3 KiB
C
231 lines
8.3 KiB
C
#include <furi.h>
|
|
#include <math.h>
|
|
#include <toolbox/protocols/protocol.h>
|
|
#include <toolbox/hex.h>
|
|
#include <lfrfid/tools/bit_lib.h>
|
|
#include "lfrfid_protocols.h"
|
|
|
|
#define PAC_STANLEY_ENCODED_BIT_SIZE (128)
|
|
#define PAC_STANLEY_ENCODED_BYTE_SIZE (((PAC_STANLEY_ENCODED_BIT_SIZE) / 8))
|
|
#define PAC_STANLEY_PREAMBLE_BIT_SIZE (8)
|
|
#define PAC_STANLEY_PREAMBLE_BYTE_SIZE (1)
|
|
#define PAC_STANLEY_ENCODED_BYTE_FULL_SIZE \
|
|
(PAC_STANLEY_ENCODED_BYTE_SIZE + PAC_STANLEY_PREAMBLE_BYTE_SIZE)
|
|
#define PAC_STANLEY_BYTE_LENGTH (10) // start bit, 7 data bits, parity bit, stop bit
|
|
#define PAC_STANLEY_DATA_START_INDEX (8 + (3 * PAC_STANLEY_BYTE_LENGTH) + 1)
|
|
|
|
#define PAC_STANLEY_DECODED_DATA_SIZE (4)
|
|
#define PAC_STANLEY_ENCODED_DATA_SIZE (sizeof(ProtocolPACStanley))
|
|
|
|
#define PAC_STANLEY_CLOCKS_IN_US (32)
|
|
#define PAC_STANLEY_CYCLE_LENGTH (256)
|
|
#define PAC_STANLEY_MIN_TIME (60)
|
|
#define PAC_STANLEY_MAX_TIME (4000)
|
|
|
|
typedef struct {
|
|
bool inverted;
|
|
bool got_preamble;
|
|
size_t encoded_index;
|
|
uint8_t encoded_data[PAC_STANLEY_ENCODED_BYTE_FULL_SIZE];
|
|
uint8_t data[PAC_STANLEY_DECODED_DATA_SIZE];
|
|
} ProtocolPACStanley;
|
|
|
|
ProtocolPACStanley* protocol_pac_stanley_alloc(void) {
|
|
ProtocolPACStanley* protocol = malloc(sizeof(ProtocolPACStanley));
|
|
return (void*)protocol;
|
|
}
|
|
|
|
void protocol_pac_stanley_free(ProtocolPACStanley* protocol) {
|
|
free(protocol);
|
|
}
|
|
|
|
uint8_t* protocol_pac_stanley_get_data(ProtocolPACStanley* protocol) {
|
|
return protocol->data;
|
|
}
|
|
|
|
static void protocol_pac_stanley_decode(ProtocolPACStanley* protocol) {
|
|
uint8_t asciiCardId[8];
|
|
for(size_t idx = 0; idx < 8; idx++) {
|
|
uint8_t byte = bit_lib_reverse_8_fast(bit_lib_get_bits(
|
|
protocol->encoded_data,
|
|
PAC_STANLEY_DATA_START_INDEX + (PAC_STANLEY_BYTE_LENGTH * idx),
|
|
8));
|
|
asciiCardId[idx] = byte & 0x7F; // discard the parity bit
|
|
}
|
|
|
|
hex_chars_to_uint8((char*)asciiCardId, protocol->data);
|
|
}
|
|
|
|
static bool protocol_pac_stanley_can_be_decoded(ProtocolPACStanley* protocol) {
|
|
// Check preamble
|
|
if(bit_lib_get_bits(protocol->encoded_data, 0, 8) != 0b11111111) return false;
|
|
if(bit_lib_get_bit(protocol->encoded_data, 8) != 0) return false;
|
|
if(bit_lib_get_bit(protocol->encoded_data, 9) != 0) return false;
|
|
if(bit_lib_get_bit(protocol->encoded_data, 10) != 1) return false;
|
|
if(bit_lib_get_bits(protocol->encoded_data, 11, 8) != 0b00000010) return false;
|
|
|
|
// Check next preamble
|
|
if(bit_lib_get_bits(protocol->encoded_data, 128, 8) != 0b11111111) return false;
|
|
|
|
// Checksum
|
|
uint8_t checksum = 0;
|
|
uint8_t stripped_byte;
|
|
for(size_t idx = 0; idx < 9; idx++) {
|
|
uint8_t byte = bit_lib_reverse_8_fast(bit_lib_get_bits(
|
|
protocol->encoded_data,
|
|
PAC_STANLEY_DATA_START_INDEX + (PAC_STANLEY_BYTE_LENGTH * idx),
|
|
8));
|
|
stripped_byte = byte & 0x7F; // discard the parity bit
|
|
if(bit_lib_test_parity_32(stripped_byte, BitLibParityOdd) != (byte & 0x80) >> 7) {
|
|
return false;
|
|
}
|
|
if(idx < 8) checksum ^= stripped_byte;
|
|
}
|
|
if(stripped_byte != checksum) return false;
|
|
return true;
|
|
}
|
|
|
|
void protocol_pac_stanley_decoder_start(ProtocolPACStanley* protocol) {
|
|
memset(protocol->data, 0, PAC_STANLEY_DECODED_DATA_SIZE);
|
|
protocol->inverted = false;
|
|
protocol->got_preamble = false;
|
|
}
|
|
|
|
bool protocol_pac_stanley_decoder_feed(ProtocolPACStanley* protocol, bool level, uint32_t duration) {
|
|
bool pushed = false;
|
|
|
|
if(duration > PAC_STANLEY_MAX_TIME) return false;
|
|
|
|
uint8_t pulses = (uint8_t)round((float)duration / PAC_STANLEY_CYCLE_LENGTH);
|
|
|
|
// Handle last stopbit & preamble (1 sb, 8 bit preamble)
|
|
if(pulses >= 9 && !protocol->got_preamble) {
|
|
pulses = 8;
|
|
protocol->got_preamble = true;
|
|
protocol->inverted = !level;
|
|
} else if(pulses >= 9 && protocol->got_preamble) {
|
|
protocol->got_preamble = false;
|
|
} else if(pulses == 0 && duration > PAC_STANLEY_MIN_TIME) {
|
|
pulses = 1;
|
|
}
|
|
|
|
if(pulses) {
|
|
for(uint8_t i = 0; i < pulses; i++) {
|
|
bit_lib_push_bit(
|
|
protocol->encoded_data,
|
|
PAC_STANLEY_ENCODED_BYTE_FULL_SIZE,
|
|
level ^ protocol->inverted);
|
|
}
|
|
pushed = true;
|
|
}
|
|
|
|
if(pushed && protocol_pac_stanley_can_be_decoded(protocol)) {
|
|
protocol_pac_stanley_decode(protocol);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool protocol_pac_stanley_encoder_start(ProtocolPACStanley* protocol) {
|
|
memset(protocol->encoded_data, 0, sizeof(protocol->encoded_data));
|
|
|
|
uint8_t idbytes[10];
|
|
idbytes[0] = '2';
|
|
idbytes[1] = '0';
|
|
|
|
uint8_to_hex_chars(protocol->data, &idbytes[2], 8);
|
|
|
|
// insert start and stop bits
|
|
for(size_t i = 0; i < 16; i++) protocol->encoded_data[i] = 0x40 >> ((i + 3) % 5 * 2);
|
|
|
|
protocol->encoded_data[0] = 0xFF; // mark + stop
|
|
protocol->encoded_data[1] = 0x20; // start + reflect8(STX)
|
|
|
|
uint8_t checksum = 0;
|
|
for(size_t i = 2; i < 13; i++) {
|
|
uint8_t shift = 7 - (i + 3) % 4 * 2;
|
|
uint8_t index = i + (i - 1) / 4;
|
|
|
|
uint16_t pattern;
|
|
if(i < 12) {
|
|
pattern = bit_lib_reverse_8_fast(idbytes[i - 2]);
|
|
pattern |= bit_lib_test_parity_32(pattern, BitLibParityOdd);
|
|
if(i > 3) checksum ^= idbytes[i - 2];
|
|
} else {
|
|
pattern = (bit_lib_reverse_8_fast(checksum) & 0xFE) |
|
|
(bit_lib_test_parity_32(checksum, BitLibParityOdd));
|
|
}
|
|
pattern <<= shift;
|
|
|
|
protocol->encoded_data[index] |= pattern >> 8 & 0xFF;
|
|
protocol->encoded_data[index + 1] |= pattern & 0xFF;
|
|
}
|
|
|
|
protocol->encoded_index = 0;
|
|
return true;
|
|
}
|
|
|
|
LevelDuration protocol_pac_stanley_encoder_yield(ProtocolPACStanley* protocol) {
|
|
uint16_t length = PAC_STANLEY_CLOCKS_IN_US;
|
|
bool bit = bit_lib_get_bit(protocol->encoded_data, protocol->encoded_index);
|
|
bit_lib_increment_index(protocol->encoded_index, PAC_STANLEY_ENCODED_BIT_SIZE);
|
|
while(bit_lib_get_bit(protocol->encoded_data, protocol->encoded_index) == bit) {
|
|
length += PAC_STANLEY_CLOCKS_IN_US;
|
|
bit_lib_increment_index(protocol->encoded_index, PAC_STANLEY_ENCODED_BIT_SIZE);
|
|
}
|
|
|
|
return level_duration_make(bit, length);
|
|
}
|
|
|
|
bool protocol_pac_stanley_write_data(ProtocolPACStanley* protocol, void* data) {
|
|
LFRFIDWriteRequest* request = (LFRFIDWriteRequest*)data;
|
|
bool result = false;
|
|
|
|
// Correct protocol data by redecoding
|
|
protocol_pac_stanley_encoder_start(protocol);
|
|
protocol_pac_stanley_decode(protocol);
|
|
|
|
protocol_pac_stanley_encoder_start(protocol);
|
|
|
|
if(request->write_type == LFRFIDWriteTypeT5577) {
|
|
request->t5577.block[0] = LFRFID_T5577_MODULATION_DIRECT | LFRFID_T5577_BITRATE_RF_32 |
|
|
(4 << LFRFID_T5577_MAXBLOCK_SHIFT);
|
|
request->t5577.block[1] = bit_lib_get_bits_32(protocol->encoded_data, 0, 32);
|
|
request->t5577.block[2] = bit_lib_get_bits_32(protocol->encoded_data, 32, 32);
|
|
request->t5577.block[3] = bit_lib_get_bits_32(protocol->encoded_data, 64, 32);
|
|
request->t5577.block[4] = bit_lib_get_bits_32(protocol->encoded_data, 96, 32);
|
|
request->t5577.blocks_to_write = 5;
|
|
result = true;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void protocol_pac_stanley_render_data(ProtocolPACStanley* protocol, FuriString* result) {
|
|
uint8_t* data = protocol->data;
|
|
furi_string_printf(result, "CIN: %02X%02X%02X%02X", data[0], data[1], data[2], data[3]);
|
|
}
|
|
|
|
const ProtocolBase protocol_pac_stanley = {
|
|
.name = "PAC/Stanley",
|
|
.manufacturer = "N/A",
|
|
.data_size = PAC_STANLEY_DECODED_DATA_SIZE,
|
|
.features = LFRFIDFeatureASK,
|
|
.validate_count = 3,
|
|
.alloc = (ProtocolAlloc)protocol_pac_stanley_alloc,
|
|
.free = (ProtocolFree)protocol_pac_stanley_free,
|
|
.get_data = (ProtocolGetData)protocol_pac_stanley_get_data,
|
|
.decoder =
|
|
{
|
|
.start = (ProtocolDecoderStart)protocol_pac_stanley_decoder_start,
|
|
.feed = (ProtocolDecoderFeed)protocol_pac_stanley_decoder_feed,
|
|
},
|
|
.encoder =
|
|
{
|
|
.start = (ProtocolEncoderStart)protocol_pac_stanley_encoder_start,
|
|
.yield = (ProtocolEncoderYield)protocol_pac_stanley_encoder_yield,
|
|
},
|
|
.render_data = (ProtocolRenderData)protocol_pac_stanley_render_data,
|
|
.render_brief_data = (ProtocolRenderData)protocol_pac_stanley_render_data,
|
|
.write_data = (ProtocolWriteData)protocol_pac_stanley_write_data,
|
|
};
|