serialcomdll.h

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#if !defined(SERIALCOMDLL_H_)
#define SERIALCOMDLL_H_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#ifndef	C_DLL
//#define C_DLLEXPORT extern "C" __declspec(dllexport)
//#define C_DLLIMPORT extern "C" __declspec(dllimport)
#define C_DLLEXPORT 
#define C_DLLIMPORT 
#endif

#define SERIAL_READ_TIMEOUT		1000	//1s
#define SERIAL_WRITE_TIMEOUT	1000	//1s

#define	RW_TIMEOUT	-99

//#define NO_HANDLE

#ifndef	NO_HANDLE
//parity:  NOPARITY= 0(default)	ODDPARITY= 1	EVENPARITY= 2;		return operation status
C_DLLEXPORT	int Setup(HANDLE hCom, DWORD baudRate= 9600, BYTE parity=NOPARITY, BYTE datasize=8, BYTE stopbits=ONESTOPBIT, DWORD timeOut= 1000, DWORD readBufferSizes=256, DWORD writeBufferSizes=256);
//comPort: "COM1", "COM2", ...	return operation status
C_DLLEXPORT HANDLE Open (char* comPort);
//pbuffer: Write buffer;	return write bytes
C_DLLEXPORT	int Write(HANDLE hCom, char* pbuffer, DWORD bytes);
//pbuffer: Read buffer;		return read bytes
C_DLLEXPORT	int Read (HANDLE hCom, char* pbuffer);
//return operation status
C_DLLEXPORT	int Close(PHANDLE hCom);
//return bytes of buffer
C_DLLEXPORT	DWORD CheckInBuffer (HANDLE hCom);
C_DLLEXPORT	DWORD CheckOutBuffer(HANDLE hCom);

C_DLLEXPORT	void SetTimeOutRW(DWORD time);

C_DLLEXPORT	HANDLE Open_NoOVERLAPPED(char *comPort);
C_DLLEXPORT	int Read_NoOVERLAPPED(HANDLE hCom, char *pbuffer);
C_DLLEXPORT	int Write_NoOVERLAPPED(HANDLE hCom, char *pbuffer, DWORD bytes);
#else

//parity:  NOPARITY= 0(default)	ODDPARITY= 1	EVENPARITY= 2;		return operation status
C_DLLEXPORT	int Setup(DWORD baudRate= 9600, BYTE parity=NOPARITY, BYTE datasize=8, BYTE stopbits=ONESTOPBIT, DWORD timeOut= 1000, DWORD readBufferSizes=256, DWORD writeBufferSizes=256);
//comPort: "COM1", "COM2", ...	return operation status
C_DLLEXPORT int Open (char* comPort);
//pbuffer: Write buffer;	return write bytes
C_DLLEXPORT	int Write(char* pbuffer);
//pbuffer: Read buffer;		return read bytes
C_DLLEXPORT	int Read (char* pbuffer);
//return operation status
C_DLLEXPORT	int Close();
//return bytes of buffer
C_DLLEXPORT	DWORD CheckInBuffer ();
C_DLLEXPORT	DWORD CheckOutBuffer();
C_DLLEXPORT	void SetTimeOutRW(DWORD time);

C_DLLEXPORT	int Read_NoOVERLAPPED(char *pbuffer);
C_DLLEXPORT	int Open_NoOVERLAPPED(char *comPort);
C_DLLEXPORT	int Write_NoOVERLAPPED(char *pbuffer);

#endif

#endif