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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Daniel Stenberg
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
/*
* Archos Jukebox Recorder button functions
*/
#include <stdlib.h>
#include "config.h"
#include "sh7034.h"
#include "system.h"
#include "button.h"
#include "kernel.h"
#include "backlight.h"
struct event_queue button_queue;
#define POLL_FREQUENCY HZ/20
#define REPEAT_START 6
#define REPEAT_INTERVAL 4
static int button_read(void);
static void button_tick(void)
{
static int tick=0;
static int count=0;
static int lastbtn=0;
static bool repeat=false;
/* only poll every X ticks */
if ( ++tick >= POLL_FREQUENCY ) {
bool post = false;
int btn = button_read();
if ( btn ) {
/* normal keypress */
if ( btn != lastbtn ) {
post = true;
}
/* repeat? */
else {
if ( repeat ) {
if ( ! --count ) {
post = true;
count = REPEAT_INTERVAL;
}
}
else if (count++ > REPEAT_START) {
post = true;
repeat = true;
count = REPEAT_INTERVAL;
/* If the OFF button is pressed long enough, and we are
still alive, then the unit must be connected to a
charger. Therefore we will reboot and let the original
firmware handle the charging. */
#ifdef HAVE_RECORDER_KEYPAD
if(btn == BUTTON_OFF)
#elif HAVE_PLAYER_KEYPAD
if(btn == BUTTON_STOP)
#endif
system_reboot();
}
}
if ( post )
{
queue_post(&button_queue, btn, NULL);
backlight_on();
}
}
else {
repeat = false;
count = 0;
}
lastbtn = btn;
tick = 0;
}
backlight_tick();
}
int button_get(bool block)
{
struct event ev;
if ( block || !queue_empty(&button_queue) ) {
queue_wait(&button_queue, &ev);
return ev.id;
}
return BUTTON_NONE;
}
#ifdef HAVE_RECORDER_KEYPAD
/* AJBR buttons are connected to the CPU as follows:
*
* ON and OFF are connected to separate port B input pins.
*
* F1, F2, F3, and UP are connected to the AN4 analog input, each through
* a separate voltage divider. The voltage on AN4 depends on which button
* (or none, or a combination) is pressed.
*
* DOWN, PLAY, LEFT, and RIGHT are likewise connected to AN5. */
/* Button voltage levels on AN4 and AN5 */
#define LEVEL1 50
#define LEVEL2 125
#define LEVEL3 175
#define LEVEL4 225
/*
*Initialize buttons
*/
void button_init()
{
#ifndef SIMULATOR
/* Set PB4 and PB8 as input pins */
PBCR1 &= 0xfffc; /* PB8MD = 00 */
PBCR2 &= 0xfcff; /* PB4MD = 00 */
PBIOR &= ~(PBDR_BTN_ON|PBDR_BTN_OFF); /* Inputs */
/* Set A/D to scan AN4 and AN5.
* This needs to be changed to scan other analog pins
* for battery level, etc. */
ADCSR = 0;
ADCR = 0;
ADCSR = ADCSR_ADST | ADCSR_SCAN | 0x5;
#endif
queue_init(&button_queue);
tick_add_task(button_tick);
}
/*
* Get button pressed from hardware
*/
static int button_read(void)
{
/* Check port B pins for ON and OFF */
int data = PBDR;
if ((data & PBDR_BTN_ON) == 0)
return BUTTON_ON;
else if ((data & PBDR_BTN_OFF) == 0)
return BUTTON_OFF;
/* Check AN4 pin for F1-3 and UP */
data = ADDRAH;
if (data >= LEVEL4)
return BUTTON_F3;
else if (data >= LEVEL3)
return BUTTON_UP;
else if (data >= LEVEL2)
return BUTTON_F2;
else if (data >= LEVEL1)
return BUTTON_F1;
/* Check AN5 pin for DOWN, PLAY, LEFT, RIGHT */
data = ADDRBH;
if (data >= LEVEL4)
return BUTTON_DOWN;
else if (data >= LEVEL3)
return BUTTON_PLAY;
else if (data >= LEVEL2)
return BUTTON_LEFT;
else if (data >= LEVEL1)
return BUTTON_RIGHT;
return BUTTON_NONE;
}
#elif HAVE_PLAYER_KEYPAD
/* The player has all buttons on port pins:
LEFT: PC0
RIGHT: PC2
PLAY: PC3
STOP: PA11
ON: PA5
MENU: PC1
*/
void button_init(void)
{
/* set port pins as input */
PAIOR &= ~0x820;
queue_init(&button_queue);
tick_add_task(button_tick);
}
static int button_read(void)
{
int porta = PADR;
int portc = PCDR;
int btn = 0;
/* buttons are active low */
if ( !(portc & 1) )
btn |= BUTTON_LEFT;
if ( !(portc & 2) )
btn |= BUTTON_MENU;
if ( !(portc & 4) )
btn |= BUTTON_RIGHT;
if ( !(portc & 8) )
btn |= BUTTON_PLAY | BUTTON_UP;
if ( !(porta & 0x20) )
btn |= BUTTON_ON;
if ( !(porta & 0x800) )
btn |= BUTTON_STOP | BUTTON_DOWN;
return btn;
}
#endif
/* -----------------------------------------------------------------
* local variables:
* eval: (load-file "../rockbox-mode.el")
* end:
*/
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