lcd_hd44780.h

/* ########################################################################
 
   PICSimLab - Programmable IC Simulator Laboratory
 
   ########################################################################
 
   Copyright (c) : 2010-2024  Luis Claudio Gambôa Lopes <lcgamboa@yahoo.com>
 
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.
 
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
   For e-mail suggestions :  lcgamboa@yahoo.com
   ######################################################################## */
 
#ifndef LCD_H
#define LCD_H
 
class board;
 
#include "../lib/draw.h"
 
#define DDRMAX 80
 
#define L_FNT 0x0200  // Sets character font
#define L_NLI 0x0100  // Sets number of display line
 
#define L_DL 0x0080  // Sets interface data length
 
#define L_LR 0x0040  // Sets shift direction
#define L_CD 0x0020  // Sets cursor-move or display-shift
 
#define L_DID 0x0010  // Sets cursor move direction
#define L_DSH 0x0008  // specifies to shift the display
 
#define L_DON 0x0004  // Sets On/Off of all display
#define L_CON 0x0002  // Sets cursor On/Off
#define L_CBL 0x0001  // Set blink of cursor position character
 
/*
I/D     0 = Decrement cursor position   1 = Increment cursor position
S   0 = No display shift        1 = Display shift
D   0 = Display off         1 = Display on
C   0 = Cursor off          1 = Cursor on
B   0 = Cursor blink off        1 = Cursor blink on
S/C     0 = Move cursor         1 = Shift display
R/L     0 = Shift left          1 = Shift right
DL  0 = 4-bit interface         1 = 8-bit interface
N   0 = 1/8 or 1/11 Duty (1 line)   1 = 1/16 Duty (2 lines)
F   0 = 5x7 dots            1 = 5x10 dots
BF      0 = Can accept instruction      1 = Internal operation in progress
*/
 
#define LCD_ADDR_CGRAM 0
#define LCD_ADDR_DDRAM 1
 
typedef struct {
    unsigned short int flags;
    unsigned char addr_counter;
    unsigned char addr_mode;
    unsigned char update;     // redraw
    unsigned char blink;      // cursor state
    char shift;               // display shift
    char ddram_char[DDRMAX];  // ddram
    char cgram[8][5];         // cgram font mapped
    char cgram_char[64];      // cgram
    char bc;
    char buff;
    unsigned char cnum;  // number of columns 16 or 20
    unsigned char lnum;  // number of lines 1,2 or 4
    board* pboard;
    int TimerID;
} lcd_t;
 
void lcd_cmd(lcd_t* lcd, char cmd);
void lcd_data(lcd_t* lcd, char data);
unsigned char lcd_read_busyf_acounter(lcd_t* lcd);
char lcd_read_data(lcd_t* lcd);
void lcd_rst(lcd_t* lcd);
void lcd_init(lcd_t* lcd, unsigned char cnum, unsigned char lnum, board* pboard_);
void lcd_end(lcd_t* lcd);
void lcd_on(lcd_t* lcd, int onoff);
void lcd_draw(lcd_t* lcd, CanvasCmd_ft CanvasCmd, float x1, float y1, float w1, float h1, int picpwr);
 
#endif