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Mark Qvist 2014-04-03 22:21:37 +02:00
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/**
* \file
* <!--
* This file is part of BeRTOS.
*
* Bertos 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*
* Copyright 2005 Develer S.r.l. (http://www.develer.com/)
*
* -->
*
* \brief Generic text LCD driver (interface).
*
* \author Bernie Innocenti <bernie@codewiz.org>
* \author Stefano Fedrigo <aleph@develer.com>
*
* $WIZ$ module_name = "lcd_text"
* $WIZ$ module_depends = "lcd_hd44", "timer", "formatwr"
*/
#ifndef DRV_LCD_H
#define DRV_LCD_H
#include "lcd_hd44.h"
#include <cfg/macros.h>
#include <cfg/compiler.h>
#include <struct/list.h>
#include <stdarg.h> // vprintf()
/* flags for lcd_printf() */
#define LCD_NORMAL 0 /* Scrittura normale */
#define LCD_FILL BV(0) /* Fill rest of line with spaces */
#define LCD_CENTER BV(1) /* Center string in line */
#define LCD_NOCURSOR BV(2) /* Scrittura senza spostamento cursore */
/** Special priority value for lcd_setLayerDepth(). */
#define LAYER_HIDDEN -127
/* Compute LCD address from x/y coordinates */
#define LCD_POS(x,y) ((lcdpos_t)((uint8_t)(x) + (uint8_t)(y) * (uint8_t)CONFIG_LCD_COLS))
#define LCD_ROW0 (CONFIG_LCD_COLS * 0)
#define LCD_ROW1 (CONFIG_LCD_COLS * 1)
#define LCD_ROW2 (CONFIG_LCD_COLS * 2)
#define LCD_ROW3 (CONFIG_LCD_COLS * 3)
/**
* Overwrapping layer context.
*/
typedef struct _Layer
{
/**
* Active layers are linked together in a list
* sorted in top to bottom order.
*/
DECLARE_NODE_ANON(struct _Layer)
/** Current XY address into this layer, for write operations. */
lcdpos_t addr;
/** Priority of this layer (greater in front of lesser). */
signed char pri;
/**
* Layer backing store buffer.
*
* All writes through the layer are copied into this buffer.
* Characters cells with value 0 are transparent with respect
* to other layers in the background.
*/
char buf[CONFIG_LCD_COLS * CONFIG_LCD_ROWS];
} Layer;
/* Global variables */
extern Layer *lcd_DefLayer;
/* Function prototypes */
extern void lcd_init(void);
extern void lcd_test(void);
extern void lcd_moveCursor(lcdpos_t addr);
extern char lcd_setCursor(char state);
extern void lcd_setAddr(Layer *layer, lcdpos_t addr);
extern void lcd_putChar(char c, Layer *layer);
extern int lcd_vprintf(Layer *layer, lcdpos_t addr, uint8_t mode, const char *format, va_list ap) FORMAT(printf, 4, 0);
extern int lcd_printf(Layer *layer, lcdpos_t addr, uint8_t mode, const char *format, ...) FORMAT(printf, 4, 5);
extern void lcd_clear(Layer *layer);
extern void lcd_layerSet(Layer *layer, char c);
extern void lcd_clearLine(Layer *layer, int y);
extern void lcd_setLayerDepth(Layer *layer, char pri);
extern Layer *lcd_newLayer(char pri);
extern void lcd_deleteLayer(Layer *layer);
extern void lcd_lock(void);
extern void lcd_unlock(void);
#endif /* DRV_LCD_H */