nes-proj/platform/exp5438/lcd.c

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/*
* Copyright (c) 2006, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
* Author : Adam Dunkels
*/
#include "lcd.h"
#include "hal_lcd.h"
#define WITH_LCD 1
#define Y_MAX 9
#define X_MAX 15
static int xpos, ypos;
#define X_CHAR_SIZE 8
#define Y_CHAR_SIZE 9
#define SCROLL_AREA LCD_MAX_SCROLL_AREA
/*---------------------------------------------------------------------------*/
void
lcd_init(void)
{
if(WITH_LCD) {
halLcdInit();
halLcdActive();
halLcdBackLightInit();
halLcdSetBackLight(8);
lcd_clear();
}
}
/*---------------------------------------------------------------------------*/
void
lcd_clear(void)
{
if(WITH_LCD) {
halLcdClearScreen();
xpos = ypos = 0;
}
}
/*---------------------------------------------------------------------------*/
void
lcd_set_pixel(int x, int y, int intensity)
{
if(WITH_LCD) {
halLcdPixel(x, y, intensity);
}
}
/*---------------------------------------------------------------------------*/
static void
inc_y(void)
{
if(WITH_LCD) {
ypos++;
xpos = 0;
}
}
/*---------------------------------------------------------------------------*/
void
lcd_write_char(char c)
{
char string[2];
if(WITH_LCD) {
if(c == '\n') {
inc_y();
} else {
string[0] = c;
string[1] = 0;
if(ypos == Y_MAX) {
lcd_clear();
ypos = xpos = 0;
}
halLcdPrintXY(string, xpos * X_CHAR_SIZE, ypos * Y_CHAR_SIZE, 0);
if(xpos == X_MAX) {
inc_y();
} else {
xpos++;
}
}
}
}
/*---------------------------------------------------------------------------*/
void
lcd_draw_line(int x0, int y0, int x1, int y1)
{
if(WITH_LCD) {
halLcdLine(x0, y0, x1, y1, 3);
}
}
/*---------------------------------------------------------------------------*/
void
lcd_draw_vertical_line(int pixels)
{
if(WITH_LCD) {
if(pixels > SCROLL_AREA) {
pixels = SCROLL_AREA;
}
lcd_draw_line(LCD_MAX_X, LCD_MAX_Y - pixels, LCD_MAX_X, LCD_MAX_Y);
}
}
/*---------------------------------------------------------------------------*/
void
lcd_scroll_x(void)
{
if(WITH_LCD) {
halLcdHScroll(LCD_MAX_Y - SCROLL_AREA, LCD_MAX_Y);
halLcdLine(LCD_MAX_X, LCD_MAX_Y - SCROLL_AREA, LCD_MAX_X, LCD_MAX_Y, 0);
}
}
/*---------------------------------------------------------------------------*/