c741ecc68a
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17287 a1c6a512-1295-4272-9138-f99709370657
252 lines
6.5 KiB
C
252 lines
6.5 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2007 by Karl Kurbjun
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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/* this file also handles the touch screen driver interface */
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#include "config.h"
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#include "cpu.h"
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#include "system.h"
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#include "button.h"
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#include "kernel.h"
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#include "backlight.h"
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#include "adc.h"
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#include "system.h"
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#include "backlight-target.h"
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#include "uart-target.h"
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#include "tsc2100.h"
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#include "string.h"
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#define BUTTON_TIMEOUT 50
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#define BUTTON_START_BYTE 0xF0
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#define BUTTON_START_BYTE2 0xF4 /* not sure why, but sometimes you get F0 or F4, */
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/* but always the same one for the session? */
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static short last_x, last_y, last_z1, last_z2; /* for the touch screen */
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static bool touch_available = false;
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static enum touchpad_mode current_mode = TOUCHPAD_POINT;
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static int touchpad_buttons[3][3] = {
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{BUTTON_TOPLEFT, BUTTON_TOPMIDDLE, BUTTON_TOPRIGHT},
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{BUTTON_MIDLEFT, BUTTON_CENTER, BUTTON_MIDRIGHT},
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{BUTTON_BOTTOMLEFT, BUTTON_BOTTOMMIDDLE, BUTTON_BOTTOMRIGHT},
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};
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void touchpad_set_mode(enum touchpad_mode mode)
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{
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current_mode = mode;
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}
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enum touchpad_mode touchpad_get_mode(void)
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{
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return current_mode;
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}
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static struct touch_calibration_point topleft, bottomright;
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/* Jd's tests.. These will hopefully work for everyone so we dont have to
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* create a calibration screen.
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* Portait:
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* (0,0) = 200, 3900
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* (480,640) = 3880, 270
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* Landscape:
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* (0,0) = 200, 270
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* (640,480) = 3880, 3900
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*/
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static int touch_to_pixels(short val_x, short val_y)
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{
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short x,y;
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#if CONFIG_ORIENTATION == SCREEN_PORTRAIT
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x=val_x;
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y=val_y;
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#else
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x=val_y;
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y=val_x;
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#endif
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x = (x-topleft.val_x)*(bottomright.px_x - topleft.px_x) / (bottomright.val_x - topleft.val_x) + topleft.px_x;
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y = (y-topleft.val_y)*(bottomright.px_y - topleft.px_y) / (bottomright.val_y - topleft.val_y) + topleft.px_y;
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if (x < 0)
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x = 0;
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else if (x>=LCD_WIDTH)
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x=LCD_WIDTH-1;
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if (y < 0)
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y = 0;
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else if (y>=LCD_HEIGHT)
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y=LCD_HEIGHT-1;
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return (x<<16)|y;
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}
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void button_init_device(void)
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{
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touch_available = false;
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/* GIO is the power button, set as input */
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IO_GIO_DIR0 |= 0x01;
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#if CONFIG_ORIENTATION == SCREEN_PORTRAIT
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topleft.val_x = 200;
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topleft.val_y = 3900;
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bottomright.val_x = 3880;
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bottomright.val_y = 270;
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#else
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topleft.val_x = 270;
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topleft.val_y = 200;
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bottomright.val_x = 3900;
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bottomright.val_y = 3880;
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#endif
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topleft.px_x = 0;
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topleft.px_y = 0;
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bottomright.px_x = LCD_WIDTH;
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bottomright.px_y = LCD_HEIGHT;
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/* Enable the touchscreen interrupt */
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IO_INTC_EINT2 |= (1<<3); /* IRQ_GIO14 */
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#if 0
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tsc2100_writereg(TSADC_PAGE, TSADC_ADDRESS,
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TSADC_PSTCM|
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(0x2<<TSADC_ADSCM_SHIFT)| /* scan x,y,z1,z2 */
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(0x1<<TSADC_RESOL_SHIFT) /* 8 bit resolution */
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);
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/* doesnt work for some reason...
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setting to 8bit would probably be better than the 12bit currently */
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#endif
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}
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inline bool button_hold(void)
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{
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return false;
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}
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static void remote_heartbeat(void)
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{
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char data[5] = {0x11, 0x30, 0x11^0x30, 0x11+0x30, '\0'};
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uart1_puts(data, 5);
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}
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#define TOUCH_MARGIN 8
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char r_buffer[5];
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int r_button = BUTTON_NONE;
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int button_read_device(int *data)
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{
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int retval, calbuf;
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static int oldbutton = BUTTON_NONE;
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r_button=BUTTON_NONE;
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*data = 0;
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if (touch_available)
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{
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short x,y;
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static long last_touch = 0;
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bool send_touch = false;
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tsc2100_read_values(&x, &y, &last_z1, &last_z2);
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if (TIME_BEFORE(last_touch + HZ/5, current_tick))
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{
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if ((x > last_x + TOUCH_MARGIN) ||
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(x < last_x - TOUCH_MARGIN) ||
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(y > last_y + TOUCH_MARGIN) ||
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(y < last_y - TOUCH_MARGIN))
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{
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send_touch = true;
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}
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}
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else
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send_touch = true;
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if (send_touch)
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{
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last_x = x;
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last_y = y;
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*data = touch_to_pixels(x, y);
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switch (current_mode)
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{
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case TOUCHPAD_POINT:
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r_button |= BUTTON_TOUCHPAD;
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break;
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case TOUCHPAD_BUTTON:
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{
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int px_x = ((*data&0xffff0000)>>16), px_y = ((*data&0x0000ffff));
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r_button |= touchpad_buttons[px_y/(LCD_HEIGHT/3)][px_x/(LCD_WIDTH/3)];
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oldbutton = r_button;
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break;
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}
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}
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}
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last_touch = current_tick;
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touch_available = false;
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}
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remote_heartbeat();
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if ((IO_GIO_BITSET0&0x01) == 0)
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{
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r_button |= BUTTON_POWER;
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oldbutton=r_button;
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}
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retval=uart1_gets_queue(r_buffer, 5);
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do
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{
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for(calbuf=0;calbuf<4;calbuf++)
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{
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if((r_buffer[calbuf]&0xF0)==0xF0 && (r_buffer[calbuf+1]&0xF0)!=0xF0)
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break;
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}
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calbuf++;
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if(calbuf==5)
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calbuf=0;
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if(retval>=0)
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{
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r_button |= r_buffer[calbuf];
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oldbutton=r_button;
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}
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else
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{
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r_button=oldbutton;
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}
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} while((retval=uart1_gets_queue(r_buffer, 5))>=5);
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return r_button;
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}
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/* Touchpad data available interupt */
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void read_battery_inputs(void);
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void GIO14(void)
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{
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short tsadc = tsc2100_readreg(TSADC_PAGE, TSADC_ADDRESS);
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short adscm = (tsadc&TSADC_ADSCM_MASK)>>TSADC_ADSCM_SHIFT;
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switch (adscm)
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{
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case 1:
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case 2:
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touch_available = true;
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break;
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case 0xb:
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read_battery_inputs();
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break;
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}
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//touch_available = true;
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IO_INTC_IRQ2 = (1<<3); /* IRQ_GIO14 == 35 */
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}
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