character.h

ep7312 蜂鸣器源码

/*
 * $Id: character.h,v 1.2 2003/08/29 03:13:18 casic Exp $
 *
 * character.h : display characters on LCD
 *
 * Copyright (C) 2003 ynding ( [e-mail] )
 *
 * 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 of the License, 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifndef _CHARACTER_H
#define _CHARACTER_H
/*
 * display an ascii character
 * x,y : coordinate of the start pixel
 * ascii_codes : the the bytes serial to be displayed 
 * the size of the ascii characters is 8*16
 * color : the color of the character
 */
void display_ascii(unsigned int x, unsigned int y, unsigned char* ascii_codes, COLOR color);

/*
 * display a Chinese character
 * x,y : coordinate of the start pixel
 * cnc_codes : the bytes serial to be displayed
 * the size of the Chinese characters is 16*16
 * color : the color of the character
 */
void display_cnc(unsigned int x, unsigned int y, unsigned char* cnc_codes, COLOR color);

/*
 * display a string,the string can contain
 * not only ascii characters but also Chinese characters
 *
 * x,y : the beginning coordinate of the string to be displayed
 * 0<=x<=39 : each line holds 40 bytes (each byte contain 8 pixels) horizontally
 * 0<=y<=14 : each line holds 16 pixels vertically
 *
 * so the whole LCD can display 40*15 ascii characters,
 * or 20*15 Chinese characters
 *
 * color : the color of the string 
 */
void display_string(unsigned int x, unsigned int y, char* str, COLOR color);

#endif /* _CHARACTER_H */