Arash Rezaei / Display

Software to control a 128x64 graphic LCD with KS0107B and KS0108B controller. Slight modification to Anders Hörnfeldts Code which increases framerate by up to 300%.

Display.cpp@0:0cc7719c6d87, 2010-12-25 (annotated)

Committer:
hapoo
Date:
Sat Dec 25 10:14:10 2010 +0000
Revision:
0:0cc7719c6d87

        

        
Who changed what in which revision?

        

            
                
UserRevisionLine numberNew contents of line

            
            


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#include "Display.h"





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#include "font.h"





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Display::Display (PinName _RS, PinName _RW, PinName _E, PinName _CS1, PinName _CS2, PinName DB0, PinName DB1, PinName DB2, PinName DB3, PinName DB4, PinName DB5, PinName DB6, PinName DB7)





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    : DB(DB0,DB1,DB2,DB3,DB4,DB5,DB6,DB7), RS(_RS), RW(_RW), E(_E), CS1(_CS1), CS2(_CS2) {





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    DB.mode(PullNone);





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    E = 0;





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    SendCommand(0x3F, 4|8);





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    for (int c=0;c<128;c++) {





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        for (int r=0;r<8;r++)





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        {





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            write(r,c,0);





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        }





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    }





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    prevPage = -2;





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    prevY = -2;





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}





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DisplayTTY::DisplayTTY (Display *d, int _row, int _startY, int _numOfChars, int _numOfRows, int _charOffset, int _flags)





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{





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    kalle = d;





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    row = _row;





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    startY = _startY;





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    numOfChars = _numOfChars;





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    numOfRows = _numOfRows;





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    charOffset = _charOffset;





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    flags = _flags;





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    CursPosY = 0;





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    CursPosW = row;





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    cls();





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}





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int Display::SendCommand(unsigned int Command, int f) {





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    int value = 1;





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    E = 0;





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    RS = 0;





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    RW = 0;





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    CS1 = 0;





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    CS2 = 0;





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    if (f&1)





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        RS = 1;





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    if (f&2)





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        RW = 1;





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    if (f&4)





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        CS1 = 1;





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    if (f&8)





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        CS2 = 1;





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    //wait(0.0000003); // 300ns





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    E = 1;





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    if (f&2)





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    {





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        DB.input();





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        //wait(0.0000003);





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        value = DB;





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    }





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    else





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    {





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        DB.output();





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        DB = Command;





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    }





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    //wait(0.0000001);





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    E = 0;





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    return value;





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}





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void Display::write (int page, int y, unsigned int data) {





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    int f = 0;





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    if (y<64)





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        f = 4;





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    else





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        f = 8;





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    CurCol = y;





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    if( ( page != prevPage ) || ( y != (prevY+1) ) || (y == 64) ) 





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    {





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        SendCommand(0xB8+(page&0x07), f);





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        SendCommand(0x40+(y&0x3F),f);





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        prevPage = page;





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    }





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    SendCommand(data, f+1);





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    prevY = y;





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}





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void Display::writec (int row, int Y, int c) {





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    if (c>31 && c<127)





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    {





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        write(row,Y+0,font5x8[(c-32)*5+0]);





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        write(row,Y+1,font5x8[(c-32)*5+1]);





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        write(row,Y+2,font5x8[(c-32)*5+2]);





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        write(row,Y+3,font5x8[(c-32)*5+3]);





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        write(row,Y+4,font5x8[(c-32)*5+4]);





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    }





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}





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int DisplayTTY::_putc (int c)





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{





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    if (c == '\n')





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        newline();





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    else





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    {





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        kalle->writec(CursPosW, startY+CursPosY*charOffset, c);





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        if (++CursPosY>=numOfChars)





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            newline();





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    }





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    return 0;





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}





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int DisplayTTY::_getc() {





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    return 0;





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}





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void DisplayTTY::newline() {





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    CursPosY=0;





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    if ((++CursPosW-row)>=numOfRows)





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    {





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        CursPosW = row;





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    }





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}





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void DisplayTTY::cls() {





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    CursPosY=0;





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    CursPosW = row;





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    for (int c=0;c<numOfChars*numOfRows;c++)





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    {





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        _putc(' ');





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    }





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}