tcs_toroeffner/source/TcsBus.h

#ifndef TCS_BUS_H_
#define TCS_BUS_H_ 1
#include <cstdint>
#include <vector>


class TcsBus {
public:
  struct EventData_t;
  typedef struct EventData_t {
    void (*func)(const EventData_t* evt);
    const uint8_t* bits;
    size_t bitCount;
  } EventData_t;

  TcsBus(int sendPin, int receivePin);
  void begin();
  void end();
  void TimeBase();
  void RegisterDefaultRxEvent(EventData_t* evt);
  void RegisterEvent(const EventData_t* evt);
  void UnRegisterEvent(const EventData_t* evt);

  bool StartTransmit(EventData_t* evt);

private:
  void EnterWaitIdle();
  void ReceiveBit(uint8_t currentBit);
  void TransmitBit();
  void WaitIdle();
  int sendPin;
  int receivePin;

  enum class SamplingState
  {
      IDLE       = 0,
      RECEIVE    = 1,
      TRANSMIT   = 2,
      WAIT_IDLE  = 3,
  };

  SamplingState state;
  uint8_t rxBits[256];
  uint16_t currentBitIndex;
  uint8_t oversamplingStep;
  uint8_t oversamplingSum;
  std::vector<const EventData_t*> events;
  EventData_t* defaultRxEvent;
  EventData_t* txEvent;
};

#endif //TCS_BUS_H_