/*
 * Serial.h & Serial.cpp - (C) 2007 by Torben H. Nielsen
 *
 * A wrapper class for communicating with a serial port
 */

#pragma once

#include <vector>
#include <string>
#include <stdexcept>

#ifndef _MSC_VER //
inline void Sleep(int x) { usleep(x*1000);}
#include <termios.h>
#endif


class CSerial
{
	
public: //public enumerations
	enum Baudrate 
	{
		Baud300,
		Baud600,
		Baud1200,
		Baud2400,
		Baud4800,
		Baud9600,
		Baud19200,
		Baud38400,
		Baud57600,
		Baud115200
	};

public: //public methods
	CSerial();
	CSerial(char* port, Baudrate bitrate);
	virtual ~CSerial(void);

	void close();
	void open(char* port, Baudrate bitrate);

	int readByte();
	void writeByte(unsigned char out);

	void writeBytes(unsigned char* buf, unsigned int len);
	int readBytes(unsigned char* buf, unsigned int maxLen);

#ifdef _MSC_VER
	COMSTAT getComstat() const;
#endif
	int bytesReady() const;
	int outQueueSize() const;
	char* getPort() const {return mPortstr;}
	Baudrate getBitrate() const {return mBitrate;}

	bool isOpen() { return mIsopen; }

protected:
	
	void printByte(char* description, unsigned char byte);
	int convertBaudrate(Baudrate rate);

#ifdef _MSC_VER
	void openWindows();
	int readBytesWindows(unsigned char*buf, unsigned int maxLen);
	void writeBytesWindows(unsigned char* buf, unsigned int len);
#else
	void openLinux();
	int readBytesLinux(unsigned char* buf, unsigned int maxLen);
	void writeBytesLinux(unsigned char* buf, unsigned int len);
#endif


private: // member vars
#ifdef _MSC_VER
	HANDLE mComport;
	DCB mDcbRestore;
#else
	int mFiledescriptor;
	termios mOldtio;
#endif
	
	char* mPortstr;
	Baudrate mBitrate;
	bool mIsopen;
};