UT/UT_Serial.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * Produced by:
 *      Mark Alexander
 *      Side Effects Software Inc
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * NAME:        UT_Serial.h ( Channel Operator Library, C++)
 *
 * COMMENTS:
 *
 *      Implements an interface to the serial port interface.
 *
 */
#ifndef UT_SERIAL_H
#define UT_SERIAL_H

#include "UT_API.h"
#ifdef WIN32
#include <windows.h>
#include <winbase.h>
#else
#define _OLD_TERMIOS
#include <termios.h>
#endif

#define SERIAL_NO_PARITY        0
#define SERIAL_ODD_PARITY       1
#define SERIAL_EVEN_PARITY      2

class UT_API UT_Serial
{
public:
                 explicit UT_Serial(int rate    = 9600, 
                           int databits = 8,
                           int parity   = SERIAL_NO_PARITY,
                           int stopbits = 1);
    
    virtual     ~UT_Serial();
                    
    int          open(const char *port, int parms);
    void         close();

    int          changeRate(int rate);

    int          dataAvailable();
    int          read(void *buffer, int num);
    int          write(const void *buffer, int num);

    void         flush();
    
private:
    int           mySpeed;
    int           myDataBits;
    int           myStopBits;
    int           myParity;
    int           mySerialStateSaved;

    // platform specific
#ifdef WIN32
    HANDLE         myFD;
    COMMCONFIG     myPreviousState;
    COMMCONFIG     mySerialState;
    int            myDataAvailable;
    char           myStoredChar;
#else
    int            myFD;
    struct termios myPreviousState;
    struct termios mySerialState;
#endif
};

#endif

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