389ff92cc1
* Makefile, Scripts: new linter * About: remove ID from IC * Firmware: remove double define for DIVC/DIVR * Scripts: check folder names too. Docker: replace syntax check with make lint. * Reformat Sources and Migrate to new file naming convention * Docker: symlink clang-format-12 to clang-format * Add coding style guide
56 lines
1.1 KiB
C++
56 lines
1.1 KiB
C++
#pragma once
|
|
#include <stdint.h>
|
|
#include <atomic>
|
|
|
|
class CyfralDecoder {
|
|
public:
|
|
bool read(uint8_t* data, uint8_t data_size);
|
|
void process_front(bool polarity, uint32_t time);
|
|
|
|
CyfralDecoder();
|
|
|
|
private:
|
|
enum class BitState : uint8_t {
|
|
WAIT_FRONT_HIGH,
|
|
WAIT_FRONT_LOW,
|
|
};
|
|
|
|
enum class State : uint8_t {
|
|
WAIT_START_NIBBLE,
|
|
READ_NIBBLE,
|
|
READ_STOP_NIBBLE,
|
|
};
|
|
|
|
State state;
|
|
BitState bit_state;
|
|
|
|
bool process_bit(bool polarity, uint32_t time, bool* readed, bool* readed_value);
|
|
void reset_state();
|
|
bool nibble_valid(uint8_t data);
|
|
|
|
// high + low period time
|
|
uint32_t period_time;
|
|
|
|
// ready flag, key is readed and valid
|
|
std::atomic<bool> ready;
|
|
|
|
// key data storage
|
|
uint16_t key_data;
|
|
|
|
// temporary nibble storage
|
|
uint8_t readed_nibble;
|
|
|
|
// data valid flag
|
|
// MUST be checked only in READ_STOP_NIBBLE state
|
|
bool data_valid;
|
|
|
|
// nibble index, we expect 8 nibbles
|
|
uint8_t index;
|
|
|
|
// bit index in nibble, 4 bit per nibble
|
|
uint8_t bit_index;
|
|
|
|
// max period, 230us x clock per us
|
|
uint32_t max_period;
|
|
};
|