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