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[FL-1059] T5577 write (#463)

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* Api-hal-gpio: extend init functions
* App Lfrfid: separate protocol layer
* App Lfrfid: write EM key scene
* App Lfrfid: syntax fix
This commit is contained in:
SG
2021-05-18 18:37:47 +10:00
committed by GitHub
parent 588480831a
commit 618ddfcd04
28 changed files with 956 additions and 420 deletions
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238
applications/lf-rfid/helpers/protocols/protocol-hid-h10301.cpp Normal file
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#include "protocol-hid-h10301.h"
#include <furi.h>
typedef uint32_t HID10301CardData;
constexpr uint8_t HID10301Count = 3;
constexpr uint8_t HID10301BitSize = sizeof(HID10301CardData) * 8;
static void write_raw_bit(bool bit, uint8_t position, HID10301CardData* card_data) {
if(bit) {
card_data[position / HID10301BitSize] |=
1UL << (HID10301BitSize - (position % HID10301BitSize) - 1);
} else {
card_data[position / (sizeof(HID10301CardData) * 8)] &=
~(1UL << (HID10301BitSize - (position % HID10301BitSize) - 1));
}
}
static void write_bit(bool bit, uint8_t position, HID10301CardData* card_data) {
write_raw_bit(bit, position + 0, card_data);
write_raw_bit(!bit, position + 1, card_data);
}
uint8_t ProtocolHID10301::get_encoded_data_size() {
return sizeof(HID10301CardData) * HID10301Count;
}
uint8_t ProtocolHID10301::get_decoded_data_size() {
return 3;
}
void ProtocolHID10301::encode(
const uint8_t* decoded_data,
const uint8_t decoded_data_size,
uint8_t* encoded_data,
const uint8_t encoded_data_size) {
furi_check(decoded_data_size >= get_decoded_data_size());
furi_check(encoded_data_size >= get_encoded_data_size());
HID10301CardData card_data[HID10301Count] = {0, 0, 0};
uint32_t fc_cn = (decoded_data[0] << 16) | (decoded_data[1] << 8) | decoded_data[2];
// even parity sum calculation (high 12 bits of data)
uint8_t even_parity_sum = 0;
for(int8_t i = 12; i < 24; i++) {
if(((fc_cn >> i) & 1) == 1) {
even_parity_sum++;
}
}
// odd parity sum calculation (low 12 bits of data)
uint8_t odd_parity_sum = 1;
for(int8_t i = 0; i < 12; i++) {
if(((fc_cn >> i) & 1) == 1) {
odd_parity_sum++;
}
}
// 0x1D preamble
write_raw_bit(0, 0, card_data);
write_raw_bit(0, 1, card_data);
write_raw_bit(0, 2, card_data);
write_raw_bit(1, 3, card_data);
write_raw_bit(1, 4, card_data);
write_raw_bit(1, 5, card_data);
write_raw_bit(0, 6, card_data);
write_raw_bit(1, 7, card_data);
// company / OEM code 1
write_bit(0, 8, card_data);
write_bit(0, 10, card_data);
write_bit(0, 12, card_data);
write_bit(0, 14, card_data);
write_bit(0, 16, card_data);
write_bit(0, 18, card_data);
write_bit(1, 20, card_data);
// card format / length 1
write_bit(0, 22, card_data);
write_bit(0, 24, card_data);
write_bit(0, 26, card_data);
write_bit(0, 28, card_data);
write_bit(0, 30, card_data);
write_bit(0, 32, card_data);
write_bit(0, 34, card_data);
write_bit(0, 36, card_data);
write_bit(0, 38, card_data);
write_bit(0, 40, card_data);
write_bit(1, 42, card_data);
// even parity bit
write_bit((even_parity_sum % 2), 44, card_data);
// data
for(uint8_t i = 0; i < 24; i++) {
write_bit((fc_cn >> (23 - i)) & 1, 46 + (i * 2), card_data);
}
// odd parity bit
write_bit((odd_parity_sum % 2), 94, card_data);
memcpy(encoded_data, &card_data, get_encoded_data_size());
}
void ProtocolHID10301::decode(
const uint8_t* encoded_data,
const uint8_t encoded_data_size,
uint8_t* decoded_data,
const uint8_t decoded_data_size) {
furi_check(decoded_data_size >= get_decoded_data_size());
furi_check(encoded_data_size >= get_encoded_data_size());
const HID10301CardData* card_data = reinterpret_cast<const HID10301CardData*>(encoded_data);
// data decoding
uint32_t result = 0;
// decode from word 1
// coded with 01 = 0, 10 = 1 transitions
for(int8_t i = 9; i >= 0; i--) {
switch((*(card_data + 1) >> (2 * i)) & 0b11) {
case 0b01:
result = (result << 1) | 0;
break;
case 0b10:
result = (result << 1) | 1;
break;
default:
break;
}
}
// decode from word 2
// coded with 01 = 0, 10 = 1 transitions
for(int8_t i = 15; i >= 0; i--) {
switch((*(card_data + 2) >> (2 * i)) & 0b11) {
case 0b01:
result = (result << 1) | 0;
break;
case 0b10:
result = (result << 1) | 1;
break;
default:
break;
}
}
uint8_t data[3] = {(uint8_t)(result >> 17), (uint8_t)(result >> 9), (uint8_t)(result >> 1)};
memcpy(decoded_data, &data, get_decoded_data_size());
}
bool ProtocolHID10301::can_be_decoded(const uint8_t* encoded_data, const uint8_t encoded_data_size) {
furi_check(encoded_data_size >= get_encoded_data_size());
const HID10301CardData* card_data = reinterpret_cast<const HID10301CardData*>(encoded_data);
// packet preamble
// raw data
if(*(encoded_data + 3) != 0x1D) {
return false;
}
// encoded company/oem
// coded with 01 = 0, 10 = 1 transitions
// stored in word 0
if((*card_data >> 10 & 0x3FFF) != 0x1556) {
return false;
}
// encoded format/length
// coded with 01 = 0, 10 = 1 transitions
// stored in word 0 and word 1
if((((*card_data & 0x3FF) << 12) | ((*(card_data + 1) >> 20) & 0xFFF)) != 0x155556) {
return false;
}
// data decoding
uint32_t result = 0;
// decode from word 1
// coded with 01 = 0, 10 = 1 transitions
for(int8_t i = 9; i >= 0; i--) {
switch((*(card_data + 1) >> (2 * i)) & 0b11) {
case 0b01:
result = (result << 1) | 0;
break;
case 0b10:
result = (result << 1) | 1;
break;
default:
return false;
break;
}
}
// decode from word 2
// coded with 01 = 0, 10 = 1 transitions
for(int8_t i = 15; i >= 0; i--) {
switch((*(card_data + 2) >> (2 * i)) & 0b11) {
case 0b01:
result = (result << 1) | 0;
break;
case 0b10:
result = (result << 1) | 1;
break;
default:
return false;
break;
}
}
// trailing parity (odd) test
uint8_t parity_sum = 0;
for(int8_t i = 0; i < 13; i++) {
if(((result >> i) & 1) == 1) {
parity_sum++;
}
}
if((parity_sum % 2) != 1) {
return false;
}
// leading parity (even) test
parity_sum = 0;
for(int8_t i = 13; i < 26; i++) {
if(((result >> i) & 1) == 1) {
parity_sum++;
}
}
if((parity_sum % 2) == 1) {
return false;
}
return true;
}