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C:/temp/src/j2k/Deprecated/old_18mar_diff/nto/Device.hpp

Go to the documentation of this file.

You must wrap around the Standard C function:

open()
close()
read()
write()
select()

raw/unraw

You should check for errors and the class should
know it's file descriptor, name, etc.

// Device.hpp -- Interface for generic devices

#ifndef  DEVICE_HPP
#define  DEVICE_HPP

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#include <time.h>
#include <fcntl.h>
#include <unistd.h>


#include <pthread.h>
#include <sys/neutrino.h>

#include <sys/stat.h>
#include <sys/select.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/uio.h>

#include <sys/termio.h>


#define CONSOLE  "/dev/con1"
#define SERIAL   "/dev/ser1"

class Device {
public:

  // Constructor
  Device( const char* name = CONSOLE,
          int  flags  = O_RDWR,
          bool openit = true    );

  // Destructor
  virtual ~Device();

  void Open();   // open  the file, reopen if already opened.
  void Close();  // close the file

  // Access functions
  void Read(        void* buf, size_t sz );  // read wrapper
  void Write( const void* buf, size_t sz );  // write wrapper

  // Specific simple case of R/W
  inline char ReadChar();
  inline void WriteChar( char c );

  // Data available ?
  int  Select();

  // Mode setting functions
  void Raw();     // Raw mode
  void Cooked();  // Normal mode

  // Query functions

  inline const char* getName() const;

  inline bool isOpen()   const;   // Open/Close
  inline bool getMode()  const;   // Raw/Normal
  inline int  getFlags() const;   // Read, Write, RW ?

private:
  // Disable these...
  Device( const Device& );
  const Device& operator=( const Device& );

protected:

int fd;              // File descriptor

bool opened;         // State variables
bool mode;

int oflag;           // Open flags

fd_set rfd;          // Select stuff
struct timeval tv;

char name[   20 ];   // Name of the device
char buffer[ 80 ];   // Temp buffer

};

#endif

> Can you please explain to me what Device class should be like?
> Can you show me a clear sample
> Device class like what should each function does in the class?


class Keyboard : public Driver {
 // getch, getche, kbhit, kbd speed
};

class SerialPort : public Driver {
 // modem speed, termios stuff, 8N1, etc.
};

You need another class Chat or
two other class SerialThread,
ConsoleThread for Read blocking states...

Sincerly,
Fred.

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