// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// +
// +    FileName:   CommsDevice.h       Author:     S.Hammond
// +
// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// +
// +    Defines and class definition for the CommsDevice class,
// +    see CommsDevice.cpp for more infomation
// +
// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

#ifndef _COMMSDEVICE_H_
#define _COMMSDEVICE_H_

#include "ModBus.h"

// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

#define _PARITY_NONE        0
#define _PARITY_EVEN        1
#define _PARITY_ODD         2

typedef struct sCommsSetup      COMMSSETUP;
typedef struct sCommsSetup     *PCOMMSSETUP;

struct sCommsSetup
{   char    Device[64];
    WORD    Baud;
    WORD    Parity;
};

class CCommsDevice
{
public:
    CCommsDevice();
    ~CCommsDevice();

    void    OpenComms(PCOMMSSETUP pSetup);
    BOOL    CheckComms(void);
    BOOL    CheckBaud(BYTE bBaud);
    BOOL    WriteDevice(BYTE *Buffer,DWORD dwLen,DWORD *dwWritten);
    BOOL    ReadDevice(BYTE *Buffer,DWORD *dwRead);
    void    CloseComms(void);

protected:
    // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    // +    Handle to current communications device
    // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    HANDLE  ComHandle;
    WORD    CurrentBaud;
};


#ifdef _COMMSDEVICE_C_
       class CCommsDevice   CommsDevice;
#else
extern class CCommsDevice   CommsDevice;
#endif

// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

#endif /* _COMMSDEVICE_H_ */