/*
 * GraphLCD driver library
 *
 * gu256x64-3900.h  -  8-bit driver module for Noritake GU256X64x-3900
 *                     VFD displays. The VFD is either operating in
 *                     8-bit mode connected to a single PC parallel
 *                     port or in serial mode connected to a single PC
 *                     serial port.
 *
 * based on:
 *   gu256x64-372 driver module for graphlcd
 *     (c) 2004 Andreas 'randy' Weinberger <randy AT smue.org>
 *   gu140x32f driver module for graphlcd
 *     (c) 2003 Andreas Brachold <vdr04 AT deltab.de>
 *   HD61830 device
 *     (c) 2001-2003 by Carsten Siebholz <c.siebholz AT t-online.de>
 *   lcdproc 0.4 driver hd44780-ext8bit
 *     (c) 1999, 1995 Benjamin Tse <blt AT comports.com>
 *
 * This file is released under the GNU General Public License. Refer
 * to the COPYING file distributed with this package.
 *
 * (c) 2004      Ralf Mueller (ralf AT bj-ig.de)
 * (c) 2005-2010 Andreas Regel <andreas.regel AT powarman.de>
 * (c) 2011      Wolfgang Astleitner <mrwastl AT users.sourceforge.net>
 */

#ifndef _GLCDDRIVERS_GU256X64_3900_H_
#define _GLCDDRIVERS_GU256X64_3900_H_

#include "driver.h"

namespace GLCD
{

class cDriverConfig;
class cParallelPort;

class cDriverGU256X64_3900 : public cDriver
{
    cParallelPort * port;
    int portFd;

    cDriverConfig * config;
    cDriverConfig * oldConfig;

    int m_iSizeYb;
    int m_nRefreshCounter;
    int interface;
    bool useDMA;
    unsigned char readyMask;
    unsigned char readyHi;

    unsigned char ** m_pDrawMem; // the draw "memory"
    unsigned char ** m_pVFDMem; // the double buffed display "memory"

    long m_nTimingAdjustCmd;
    bool m_bSleepIsInit;

    int CheckSetup();

protected:
    void ClearVFDMem();
    int InitSerialPort();
    int InitParallelPort();
    void InitNormalDisplay();
    void InitDMADisplay();

    void WriteSerial(unsigned char data);
    void WriteParallel(unsigned char data);
    void Write(unsigned char data);
public:
    cDriverGU256X64_3900(cDriverConfig * config);
    virtual ~cDriverGU256X64_3900();

    virtual int Init();
    virtual int DeInit();

    virtual void Clear();
    virtual void SetPixel(int x, int y, uint32_t data);
    //virtual void Set8Pixels(int x, int y, unsigned char data);
    virtual void Refresh(bool refreshAll = false);

    virtual void SetBrightness(unsigned int percent);
};

} // end of namespace

#endif