Jack H

6.2 SERIAL COMMUNICATIONS UNDER LINUX

In Linux serial communications is similar to normal file access. The file names used to access

these ports are in the ’dev’ directory. The ’com1’ port is called ’ttyS0’, and the ’com2’ port is

called ’ttyS1’.

#ifndef __SERIAL
#define __SERIAL
#define	ERROR	-1
#define	NO_ERROR	0
class serial_io {
protected:
public:
	int	fd; /* File Descriptor Global Variable */
		serial_io(char*);
		~serial_io();
	int	decode_param(char*);
	int	writer(char*);
	int	reader(char*, int);
};
#endif

Figure X.10 - The Header File (serial_io.h)

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