/*

 * GraphLCD driver library

 *

 * port.h  -  parallel port class with low level routines

 *

 * This file is released under the GNU General Public License. Refer

 * to the COPYING file distributed with this package.

 *

 * (c) 2004 Andreas Regel <andreas.regel AT powarman.de>

 */

#ifndef _GLCDDRIVERS_PORT_H_

#define _GLCDDRIVERS_PORT_H_

namespace GLCD

{

const int kForward = 0;

const int kReverse = 1;

const unsigned char kStrobeHigh = 0x00; // Pin 1

const unsigned char kStrobeLow  = 0x01;

const unsigned char kAutoHigh   = 0x00; // Pin 14

const unsigned char kAutoLow    = 0x02;

const unsigned char kInitHigh   = 0x04; // Pin 16

const unsigned char kInitLow    = 0x00;

const unsigned char kSelectHigh = 0x00; // Pin 17

const unsigned char kSelectLow  = 0x08;

class cParallelPort

{

private:

    int fd;

    int port;

    bool usePPDev;

public:

    cParallelPort();

    ~cParallelPort();

    int Open(int port);

    int Open(const char * device);

    int Close();

    bool IsDirectIO() const { return (!usePPDev); }

    int GetPortHandle() const { return ((usePPDev) ? fd : port); }

    void Claim();

    void Release();

    void SetDirection(int direction);

    unsigned char ReadControl();

    void WriteControl(unsigned char values);

    unsigned char ReadStatus();

    unsigned char ReadData();

    void WriteData(unsigned char data);

};

class cSerialPort

{

private:

    int fd;

public:

    cSerialPort();

    ~cSerialPort();

    int Open(const char * device);

    int Close();

    int ReadData(unsigned char * data);

    void WriteData(unsigned char data);

    void WriteData(unsigned char * data, unsigned short length);

};

} // end of namespace

#endif