Anders Hörnfeldt / Display

128x64 grafical display with KS0107B and KS0108B controller

Display.cpp@0:45771b38d50d, 2009-11-17 (annotated)

Committer:
hornfeldt
Date:
Tue Nov 17 22:42:50 2009 +0000
Revision:
0:45771b38d50d
Child:
1:1d06bc155ef3

        

        
Who changed what in which revision?

        

            
                
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#include "mbed.h"





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#include "Display.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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}





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DisplayTTY::DisplayTTY (Display *d, int row, int startY, int numOfChars=10, int numOfRows=1, int charOffset=6, int flags=0)





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{





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    display = d;





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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(0.0000005); // 500ns





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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(0.0000004);





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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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        wait(0.0000001);





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        DB = Command;





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    }





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





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





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    SendCommand(data, f+1);





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}





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





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    if (c>31 && c<127)





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    {





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





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





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





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





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





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    }





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}