emscom.h

在LINUX环境下

#ifndef __EMSCOM_H__
#define __EMSCOM_H__

#include     <stdio.h>      /*标准输入输出定义*/
#include     <stdlib.h>     /*标准函数库定义*/
#include     <unistd.h>     /*Unix 标准函数定义*/
#include     <sys/types.h>  
#include     <sys/stat.h>   
#include     <fcntl.h>      /*文件控制定义*/
#include     <termios.h>    /*PPSIX 终端控制定义*/
#include     <errno.h>      /*错误号定义*/

#include <string>

#define INVALID_HANDLE_VALUE 0

class EmsCom
{
	private:

		int m_PortHandle;	//串口文件句柄

		string m_ComName;
		int 	m_BaudRate; //Current baud rate
		short int m_DataBits; //Current Data bits per byts
		short int m_StopBits ; //Current Stop bits per byte
		short int m_Parity;//Current Parity (No/Odd/Even/Mark/Space = 0-4)
	
		bool m_Inuse:Boolean;
		string m_EndChar; //Response terminator string
		
		unsigned int m_IntervalOut;
	public:

		EmsCom();
		~EmsCom();

		bool ToOpenCom(void);
		int ToCloseCom(void);
		bool ToWriteCom(char *_pByteData,int _wLen);
		
		int ToSetBaud(int _BaudRate);// Procedure to set the baud rate
		int ToSetData(short int _DataBits); // Procedure to set the Data bits
		int ToSetStop(short int _StopBits);// Procedure to set the stop bits
		int ToSetParity(short int _Parity);//Procedure to set the Parity

		bool IsOpened(void)
		{
			if(m_PortHandle==INVALID_HANDLE_VALUE)
				return false;
			return true;
		}
				
}
#endif