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/*
* RTEMS for Nintendo DS input parser.
*
* Copyright (c) 2008 by Matthieu Bucchianeri <mbucchia@gmail.com>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
*
* http://www.rtems.com/license/LICENSE
*/
#include <stdio.h>
#include <stdlib.h>
#include <rtems.h>
#include <nds.h>
#include <rtems/mw_uid.h>
/*
* from console/console.c
*/
extern void console_push (char c);
/*
* from reco.c
*/
extern char PA_CheckLetter (int down, int x, int y);
/*
* message queue for touchscreen and graffiti events.
*/
static rtems_id mou_queue_id = 0;
static rtems_id kbd_queue_id = 0;
/*
* old position.
*/
static int old_x = 0;
static int old_y = 0;
static int old_btns = 0;
/*
* hand mode.
*/
static int hand = 0;
/*
* update touchscreen position.
*/
void
update_touchscreen (void)
{
static int graffiti = 0;
struct MW_UID_MESSAGE m;
int x, y, k, kh, btns = 0;
touchPosition pos;
char c;
/* update keypad & touchscreen */
scanKeys ();
pos = touchReadXY ();
x = pos.px;
y = pos.py;
k = keysDown ();
kh = keysHeld ();
/* check for character recognition */
if ((kh & KEY_L) || (kh & KEY_R)) {
graffiti = 1;
c = PA_CheckLetter ((kh & KEY_TOUCH ? 1 : 0), x, y);
if (c) {
/* signal the console driver */
console_push (c);
if (kbd_queue_id != 0) {
/* send the read character */
m.type = MV_UID_KBD;
m.m.kbd.code = c;
m.m.kbd.modifiers = 0;
m.m.kbd.mode = MV_KEY_MODE_ASCII;
rtems_message_queue_send (kbd_queue_id, (void *) &m,
sizeof (struct MW_UID_MESSAGE));
}
}
} else {
if (graffiti == 1) {
x = old_x;
y = old_y;
}
graffiti = 0;
}
if (mou_queue_id == 0)
return;
if (hand == 1) {
if (k & KEY_LEFT) {
btns = MV_BUTTON_LEFT;
}
if (k & KEY_RIGHT) {
btns = MV_BUTTON_RIGHT;
}
} else {
if (k & KEY_A) {
btns = MV_BUTTON_LEFT;
}
if (k & KEY_B) {
btns = MV_BUTTON_RIGHT;
}
}
if (!((kh & KEY_L) || (kh & KEY_R)) && (kh & KEY_TOUCH)
&& (x != old_x || y != old_y || btns)) {
/* send the read position */
m.type = MV_UID_ABS_POS;
old_btns = m.m.pos.btns = btns;
old_x = m.m.pos.x = x;
old_y = m.m.pos.y = y;
m.m.pos.z = 0;
rtems_message_queue_send (mou_queue_id, (void *) &m,
sizeof (struct MW_UID_MESSAGE));
}
}
/*
* register a message queue for touchscreen events.
*/
void
register_mou_msg_queue (char *q_name)
{
rtems_name queue_name;
rtems_status_code status;
queue_name = rtems_build_name (q_name[0], q_name[1], q_name[2], q_name[3]);
status = rtems_message_queue_ident (queue_name, RTEMS_LOCAL, &mou_queue_id);
if (status != RTEMS_SUCCESSFUL) {
printk ("[!] cannot create queue %d\n", status);
return;
}
update_touchscreen ();
}
/*
* unregister the message queue.
*/
void
unregister_mou_msg_queue (void)
{
/* nothing here */
}
/*
* register a message queue for graffiti events.
*/
void
register_kbd_msg_queue (char *q_name)
{
rtems_name queue_name;
rtems_status_code status;
queue_name = rtems_build_name (q_name[0], q_name[1], q_name[2], q_name[3]);
status = rtems_message_queue_ident (queue_name, RTEMS_LOCAL, &kbd_queue_id);
if (status != RTEMS_SUCCESSFUL) {
printk ("[!] cannot create queue %d\n", status);
return;
}
}
/*
* unregister the message queue.
*/
void
unregister_kbd_msg_queue (void)
{
/* nothing here */
}
/*
* set hand mode.
*/
void
touchscreen_sethand (int h)
{
hand = h;
}
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