#ifndef _SERIAL_H_#define _SERIAL_H_#include <stdio.h>#include <string.h>#include <sys/types.h>#include <sys/stat.h>#include <fcntl.h>#include <unistd.h>#include <termios.h>#include <stdlib.h>#include <errno.h>class MySerial{public:    MySerial();    ~MySerial();public:	static int set_opt(int fd,int nSpeed, int nBits, char nEvent, int nStop);	static int open_port(int fd,int comport);	static int nwrite(int serialfd,const char *data,int datalength);};#endif