FUTABA_SBUS.h

// ch.moellinger@gmail.com, 05/2014

#ifndef FUTABA_SBUS_h
#define FUTABA_SBUS_h

#include <Arduino.h>


#define SBUS_SIGNAL_OK          0x00
#define SBUS_SIGNAL_LOST        0x01
#define SBUS_SIGNAL_FAILSAFE    0x02

class FUTABA_SBUS
{
public:
	void begin(void);

	void ProcessInput(void);
	bool FetchChannelData(int16_t *pTarget, uint8_t &rStatusByte);

	bool IsDataAvailable() const { return m_bDataAvailable; }

private:
	void ItlStartReadingPayload();
	void ItlAbortReadingPayload();
	void ItlFinishReadingPayload();
	void ItlSuccessfullReadPayload();

	/// Tries to resync by reading bytes until the searched byte is found and consumed
	/// returns true if searched byte was found and consumed, false if no data is left and it was not found
	bool ItlResyncTo(uint8_t nSearchedByte);

	bool m_bDataAvailable;
	bool m_bIsReadingPayload;

	int  m_iCurBufferIndex;

	// A temporary buffer, used to 
	// process the input data. If the line is 
	// completely received and valid, it is copied to m_pReadSBusData
	uint8_t m_pTempInBuffer[25];

	// The latest read sbus data
	uint8_t m_pReadSBusData[25];


};

#endif