/*
* Filename: cfag12864b.h
* Version: 0.1.0
* Description: cfag12864b LCD driver header
* License: GPLv2
*
* Author: Copyright (C) Miguel Ojeda Sandonis
* Date: 2006-10-12
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 _CFAG12864B_H_
#define _CFAG12864B_H_

#define CFAG12864B_WIDTH (128)
#define CFAG12864B_HEIGHT (64)
#define CFAG12864B_CONTROLLERS (2)
#define CFAG12864B_PAGES (8)
#define CFAG12864B_ADDRESSES (64)
#define CFAG12864B_SIZE ((CFAG12864B_CONTROLLERS) * \
(CFAG12864B_PAGES) * \
(CFAG12864B_ADDRESSES))

/*
* The driver will blit this buffer to the LCD
*
* Its size is CFAG12864B_SIZE.
*/
extern unsigned char * cfag12864b_buffer;

/*
* Get the refresh rate of the LCD
*
* Returns the refresh rate (hertz).
*/
extern unsigned int cfag12864b_getrate(void);

/*
* Enable refreshing
*
* Returns 0 if successful (anyone was using it),
* or != 0 if failed (someone is using it).
*/
extern unsigned char cfag12864b_enable(void);

/*
* Disable refreshing
*
* You should call this only when you finish using the LCD.
*/
extern void cfag12864b_disable(void);

/*
* Is enabled refreshing? (is anyone using the module?)
*
* Returns 0 if refreshing is not enabled (anyone is using it),
* or != 0 if refreshing is enabled (someone is using it).
*
* Useful for buffer read-only modules.
*/
extern unsigned char cfag12864b_isenabled(void);

/*
* Is the module inited?
*/
extern unsigned char cfag12864b_isinited(void);

#endif /* _CFAG12864B_H_ */