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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007, 2009 by Karl Kurbjun
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "cpu.h"
#include "system.h"
#include "button.h"
#include "kernel.h"
#include "backlight.h"
#include "backlight-target.h"
#include "lcd-remote-target.h"
#include "uart-target.h"
#include "tsc2100.h"
#include "string.h"
#include "touchscreen.h"
static bool hold_button = false;
static struct touch_calibration_point topleft, bottomright;
/* Jd's tests.. These will hopefully work for everyone so we dont have to
* create a calibration screen.
* Portait:
* (0,0) = 200, 3900
* (480,640) = 3880, 270
* Landscape:
* (0,0) = 200, 270
* (640,480) = 3880, 3900
*/
static int touch_to_pixels(short *val_x, short *val_y)
{
short x,y;
#if CONFIG_ORIENTATION == SCREEN_PORTRAIT
x=*val_x;
y=*val_y;
#else
x=*val_y;
y=*val_x;
#endif
x = (x-topleft.val_x)*(bottomright.px_x - topleft.px_x) / (bottomright.val_x - topleft.val_x) + topleft.px_x;
y = (y-topleft.val_y)*(bottomright.px_y - topleft.px_y) / (bottomright.val_y - topleft.val_y) + topleft.px_y;
if (x < 0)
x = 0;
else if (x>=LCD_WIDTH)
x=LCD_WIDTH-1;
if (y < 0)
y = 0;
else if (y>=LCD_HEIGHT)
y=LCD_HEIGHT-1;
*val_x=x;
*val_y=y;
return (x<<16)|y;
}
void button_init_device(void)
{
/* GIO is the power button, set as input */
IO_GIO_DIR0 |= 0x01;
#if CONFIG_ORIENTATION == SCREEN_PORTRAIT
topleft.val_x = 200;
topleft.val_y = 3900;
bottomright.val_x = 3880;
bottomright.val_y = 270;
#else
topleft.val_x = 270;
topleft.val_y = 200;
bottomright.val_x = 3900;
bottomright.val_y = 3880;
#endif
topleft.px_x = 0;
topleft.px_y = 0;
bottomright.px_x = LCD_WIDTH;
bottomright.px_y = LCD_HEIGHT;
}
inline bool button_hold(void)
{
return hold_button;
}
/* Since this is a touchscreen, the expectation in higher levels is that the
* previous touch location is maintained when a release occurs. This is
* intended to mimic a mouse or other similar pointing device.
*/
int button_read_device(int *data)
{
static int old_data = 0;
int button_read = BUTTON_NONE;
short touch_x, touch_y, touch_z1, touch_z2;
static bool hold_button_old = false;
*data = old_data;
/* Handle touchscreen */
if (tsc2100_read_touch(&touch_x, &touch_y, &touch_z1, &touch_z2))
{
old_data = *data = touch_to_pixels(&touch_x, &touch_y);
button_read |= touchscreen_to_pixels(touch_x, touch_y, data);
}
tsc2100_set_mode(true, 0x02);
/* Handle power button */
if ((IO_GIO_BITSET0&0x01) == 0) {
button_read |= BUTTON_POWER;
}
#if defined(HAVE_REMOTE_LCD)
/* Read data from the remote */
button_read |= remote_read_device();
hold_button=remote_button_hold();
#endif
/* Take care of hold notifications */
#ifndef BOOTLOADER
/* give BL notice if HB state chaged */
if (hold_button != hold_button_old) {
backlight_hold_changed(hold_button);
hold_button_old=hold_button;
}
#endif
if (hold_button)
{
button_read = BUTTON_NONE;
}
return button_read;
}
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