// note that these buffers are independent
// of the buffering capacity withing the
// FTDI chip, or the UART FIFO's or whatever
// else might exist at the hardware level.

#define		TxBuffSize	(0x800)
#define		RxBuffSize	(0x800)

class TDebugDisplayForm;

class prop_serial
{
public:
	CString		m_strVersion;
	CString		m_strCPUInfo;
// total bytes written during a session
	bool		m_bCommOpen;
	LPVOID		m_pRxBuff;  //[RxBuffSize];
	LPVOID		m_pTxBuff;  //[TxBuffSize-1];
	HANDLE		m_hEventRx;

private:
	CString		m_strCommId;
	char		m_cVersion;
	int			m_iErrorCount;
	int			m_iPortId;
	DCB			m_CommDCB;
	HANDLE		m_hCommHandle;	
	bool		m_bFatalError;
	bool		m_bDebugActive;
	bool		m_bAbortMode;
	bool		m_bVersionMode;
	DWORD		m_dwTxBuffPos;
	DWORD		m_dwLastError;
	DWORD		m_dwRxBuffStart;
	DWORD		m_dwRxBuffEnd;
	DWORD		m_dwBytesRead;
	DWORD		m_dwBytesWritten;
	OVERLAPPED	m_overlap;
#if 0
	_progress_form ProgressForm;
#endif

public:
	prop_serial();
	bool open_com();
	bool close_com();
	bool reset_hardware();
	bool detect_hardware ();
	bool set_version_string();
	bool open_forth ();
	
	int GetComPortNumber();
	void StartDebug();
	void TxByte(unsigned char);
	void TxString(CString);
	void TxString(const char*);
	void RxComm();
	bool RxCheck();

protected:
	void make_com_string(int id);
	void reset_dcb (LPDCB pDCB);
	void reset_com_timeouts ();
	void reset_buffers ();
	void reset_flags ();
	void flush_rx (bool z);
	bool version_check();
	void LoadHardware();
	bool HardwareFound();
	void OperateDebug();
// transmit data
	void TxBase64(unsigned char);
	void TxHex(unsigned char x);
	void Byte(unsigned char);
	void TxComm();
//	recieve data
	unsigned char RxByte();
	unsigned char RxGet();

// errors and housekeeping
	static char *GetErrorString(int);
	static void Waitms(int);
	void CommError(CString);
	void Abort();
};