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[FL-1616] RFID: fix HID emulation (#610)

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* Rfid: fixed HID emulation by adding zero pulse every 4 bits
* Rfid: HID emulation fixed with DSP based FSK oscillator.
This commit is contained in:
SG
2021-07-30 21:12:36 +10:00
committed by GitHub
parent e9e29e0e0c
commit fb80f9537f
5 changed files with 73 additions and 37 deletions
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50
applications/lfrfid/helpers/encoder-hid-h10301.cpp
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@@ -7,7 +7,6 @@ void EncoderHID_H10301::init(const uint8_t* data, const uint8_t data_size) {
hid.encode(data, data_size, reinterpret_cast<uint8_t*>(&card_data), sizeof(card_data) * 3);
card_data_index = 0;
bit_index = 0;
}
void EncoderHID_H10301::write_bit(bool bit, uint8_t position) {
@@ -24,39 +23,24 @@ void EncoderHID_H10301::write_raw_bit(bool bit, uint8_t position) {
}
void EncoderHID_H10301::get_next(bool* polarity, uint16_t* period, uint16_t* pulse) {
// hid 0 is 6 cycles by 8 clocks
const uint8_t hid_0_period = 8;
const uint8_t hid_0_count = 6;
// hid 1 is 5 cycles by 10 clocks
const uint8_t hid_1_period = 10;
const uint8_t hid_1_count = 5;
uint8_t bit = (card_data[card_data_index / 32] >> (31 - (card_data_index % 32))) & 1;
bool bit = (card_data[card_data_index / 32] >> (31 - (card_data_index % 32))) & 1;
*polarity = true;
if(bit) {
*period = hid_1_period;
*pulse = hid_1_period / 2;
bit_index++;
if(bit_index >= hid_1_count) {
bit_index = 0;
card_data_index++;
if(card_data_index >= (32 * card_data_max)) {
card_data_index = 0;
}
}
} else {
*period = hid_0_period;
*pulse = hid_0_period / 2;
bit_index++;
if(bit_index >= hid_0_count) {
bit_index = 0;
card_data_index++;
if(card_data_index >= (32 * card_data_max)) {
card_data_index = 0;
}
bool advance = fsk->next(bit, period);
if(advance) {
card_data_index++;
if(card_data_index >= (32 * card_data_max)) {
card_data_index = 0;
}
}
*polarity = true;
*pulse = *period / 2;
}
EncoderHID_H10301::EncoderHID_H10301() {
fsk = new OscFSK(8, 10, 50);
}
EncoderHID_H10301::~EncoderHID_H10301() {
delete fsk;
}