File content as of revision 0:0cc7719c6d87:

#include "Display.h"
#include "font.h"

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)
    : DB(DB0,DB1,DB2,DB3,DB4,DB5,DB6,DB7), RS(_RS), RW(_RW), E(_E), CS1(_CS1), CS2(_CS2) {
    DB.mode(PullNone);
    E = 0;
    SendCommand(0x3F, 4|8);
    for (int c=0;c<128;c++) {
        for (int r=0;r<8;r++)
        {
            write(r,c,0);
        }
    }
    prevPage = -2;
    prevY = -2;
}
DisplayTTY::DisplayTTY (Display *d, int _row, int _startY, int _numOfChars, int _numOfRows, int _charOffset, int _flags)
{
    kalle = d;
    row = _row;
    startY = _startY;
    numOfChars = _numOfChars;
    numOfRows = _numOfRows;
    charOffset = _charOffset;
    flags = _flags;
    CursPosY = 0;
    CursPosW = row;
    cls();
}
int Display::SendCommand(unsigned int Command, int f) {
    int value = 1;
    E = 0;
    RS = 0;
    RW = 0;
    CS1 = 0;
    CS2 = 0;
    if (f&1)
        RS = 1;
    if (f&2)
        RW = 1;
    if (f&4)
        CS1 = 1;
        
    if (f&8)
        CS2 = 1;
    //wait(0.0000003); // 300ns
    E = 1;
    if (f&2)
    {
        DB.input();
        //wait(0.0000003);
        value = DB;
    }
    else
    {
        DB.output();
        DB = Command;
    }
    //wait(0.0000001);
    E = 0;
    return value;
}

void Display::write (int page, int y, unsigned int data) {
    int f = 0;
    if (y<64)
        f = 4;
    else
        f = 8;
    CurCol = y;
    if( ( page != prevPage ) || ( y != (prevY+1) ) || (y == 64) ) 
    {
        SendCommand(0xB8+(page&0x07), f);
        SendCommand(0x40+(y&0x3F),f);
        prevPage = page;
    }
    SendCommand(data, f+1);
    
    prevY = y;
}

void Display::writec (int row, int Y, int c) {
    if (c>31 && c<127)
    {
        write(row,Y+0,font5x8[(c-32)*5+0]);
        write(row,Y+1,font5x8[(c-32)*5+1]);
        write(row,Y+2,font5x8[(c-32)*5+2]);
        write(row,Y+3,font5x8[(c-32)*5+3]);
        write(row,Y+4,font5x8[(c-32)*5+4]);
    }
}
int DisplayTTY::_putc (int c)
{
    if (c == '\n')
        newline();
    else
    {
        kalle->writec(CursPosW, startY+CursPosY*charOffset, c);

        if (++CursPosY>=numOfChars)
            newline();
    }

    return 0;
}
int DisplayTTY::_getc() {
    return 0;
}
void DisplayTTY::newline() {
    CursPosY=0;
    if ((++CursPosW-row)>=numOfRows)
    {
        CursPosW = row;
    }
}
void DisplayTTY::cls() {
    CursPosY=0;
    CursPosW = row;
    for (int c=0;c<numOfChars*numOfRows;c++)
    {
        _putc(' ');
    }
}