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rockbox/firmware/drivers/button.c
Tomas Salfischberger 6c999a9b53 More optimized fix (doing GPIO1_READ just once) 
Formatting as amiconn wanted :)


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6615 a1c6a512-1295-4272-9138-f99709370657
2005-06-08 15:55:19 +00:00

594 lines
15 KiB
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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.
*
****************************************************************************/
/*
* Rockbox button functions
*/
#include <stdlib.h>
#include "config.h"
#include "cpu.h"
#include "system.h"
#include "button.h"
#include "kernel.h"
#include "backlight.h"
#include "adc.h"
#include "serial.h"
#include "power.h"
#include "system.h"
#include "powermgmt.h"
struct event_queue button_queue;
static long lastbtn; /* Last valid button status */
static long last_read; /* Last button status, for debouncing/filtering */
#ifdef HAVE_LCD_BITMAP
static bool flipped; /* buttons can be flipped to match the LCD flip */
#endif
/* how often we check to see if a button is pressed */
#define POLL_FREQUENCY HZ/100
/* how long until repeat kicks in */
#define REPEAT_START 30
/* the speed repeat starts at */
#define REPEAT_INTERVAL_START 16
/* speed repeat finishes at */
#define REPEAT_INTERVAL_FINISH 5
/* Number of repeated keys before shutting off */
#define POWEROFF_COUNT 10
static int button_read(void);
static void button_tick(void)
{
static int tick = 0;
static int count = 0;
static int repeat_speed = REPEAT_INTERVAL_START;
static int repeat_count = 0;
static bool repeat = false;
int diff;
int btn;
#if !defined(HAVE_MMC) && (CONFIG_KEYPAD != IRIVER_H100_PAD) \
&& (CONFIG_KEYPAD != GMINI100_PAD)
/* Post events for the remote control */
btn = remote_control_rx();
if(btn)
{
queue_post(&button_queue, btn, NULL);
}
#endif
/* only poll every X ticks */
if ( ++tick >= POLL_FREQUENCY )
{
bool post = false;
btn = button_read();
/* Find out if a key has been released */
diff = btn ^ lastbtn;
if(diff && (btn & diff) == 0)
{
queue_post(&button_queue, BUTTON_REL | diff, NULL);
}
else
{
if ( btn )
{
/* normal keypress */
if ( btn != lastbtn )
{
post = true;
repeat = false;
repeat_speed = REPEAT_INTERVAL_START;
}
else /* repeat? */
{
if ( repeat )
{
count--;
if (count == 0) {
post = true;
/* yes we have repeat */
repeat_speed--;
if (repeat_speed < REPEAT_INTERVAL_FINISH)
repeat_speed = REPEAT_INTERVAL_FINISH;
count = repeat_speed;
repeat_count++;
/* Send a SYS_POWEROFF event if we have a device
which doesn't shut down easily with the OFF
key */
#ifdef HAVE_SW_POWEROFF
if (btn == BUTTON_OFF &&
#ifndef IRIVER_H100
!charger_inserted() &&
#endif
repeat_count > POWEROFF_COUNT)
queue_post(&button_queue, SYS_POWEROFF, NULL);
#endif
}
}
else
{
if (count++ > REPEAT_START)
{
post = true;
repeat = true;
repeat_count = 0;
/* initial repeat */
count = REPEAT_INTERVAL_START;
}
}
}
if ( post )
{
if (repeat)
queue_post(&button_queue, BUTTON_REPEAT | btn, NULL);
else
queue_post(&button_queue, btn, NULL);
#ifdef HAVE_REMOTE_LCD
if(btn & BUTTON_REMOTE)
remote_backlight_on();
else
#endif
backlight_on();
reset_poweroff_timer();
}
}
else
{
repeat = false;
count = 0;
}
}
lastbtn = btn & ~(BUTTON_REL | BUTTON_REPEAT);
tick = 0;
}
backlight_tick();
}
long button_get(bool block)
{
struct event ev;
if ( block || !queue_empty(&button_queue) )
{
queue_wait(&button_queue, &ev);
return ev.id;
}
return BUTTON_NONE;
}
long button_get_w_tmo(int ticks)
{
struct event ev;
queue_wait_w_tmo(&button_queue, &ev, ticks);
return (ev.id != SYS_TIMEOUT)? ev.id: BUTTON_NONE;
}
void button_init(void)
{
/* hardware inits */
#if CONFIG_KEYPAD == IRIVER_H100_PAD
/* Set GPIO33, GPIO37, GPIO38 and GPIO52 as general purpose inputs */
GPIO1_FUNCTION |= 0x00100062;
GPIO1_ENABLE &= ~0x00100062;
#elif CONFIG_KEYPAD == RECORDER_PAD
/* Set PB4 and PB8 as input pins */
PBCR1 &= 0xfffc; /* PB8MD = 00 */
PBCR2 &= 0xfcff; /* PB4MD = 00 */
PBIOR &= ~0x0110; /* Inputs */
#elif CONFIG_KEYPAD == PLAYER_PAD
/* set PA5 and PA11 as input pins */
PACR1 &= 0xff3f; /* PA11MD = 00 */
PACR2 &= 0xfbff; /* PA5MD = 0 */
PAIOR &= ~0x0820; /* Inputs */
#elif CONFIG_KEYPAD == ONDIO_PAD
/* nothing to initialize here */
#elif CONFIG_KEYPAD == GMINI100_PAD
/* nothing to initialize here */
#endif /* CONFIG_KEYPAD */
queue_init(&button_queue);
lastbtn = 0;
tick_add_task(button_tick);
reset_poweroff_timer();
#ifdef HAVE_LCD_BITMAP
flipped = false;
#endif
}
#ifdef HAVE_LCD_BITMAP /* only bitmap displays can be flipped */
/*
* helper function to swap UP/DOWN, LEFT/RIGHT (and F1/F3 for Recorder)
*/
static int button_flip(int button)
{
int newbutton;
newbutton = button &
~(BUTTON_UP | BUTTON_DOWN
| BUTTON_LEFT | BUTTON_RIGHT
#if CONFIG_KEYPAD == RECORDER_PAD
| BUTTON_F1 | BUTTON_F3
#endif
);
if (button & BUTTON_UP)
newbutton |= BUTTON_DOWN;
if (button & BUTTON_DOWN)
newbutton |= BUTTON_UP;
if (button & BUTTON_LEFT)
newbutton |= BUTTON_RIGHT;
if (button & BUTTON_RIGHT)
newbutton |= BUTTON_LEFT;
#if CONFIG_KEYPAD == RECORDER_PAD
if (button & BUTTON_F1)
newbutton |= BUTTON_F3;
if (button & BUTTON_F3)
newbutton |= BUTTON_F1;
#endif
return newbutton;
}
/*
* set the flip attribute
* better only call this when the queue is empty
*/
void button_set_flip(bool flip)
{
if (flip != flipped) /* not the current setting */
{
/* avoid race condition with the button_tick() */
int oldlevel = set_irq_level(HIGHEST_IRQ_LEVEL);
lastbtn = button_flip(lastbtn);
flipped = flip;
set_irq_level(oldlevel);
}
}
#endif /* HAVE_LCD_BITMAP */
/*
Archos hardware button hookup
=============================
Recorder / Recorder FM/V2
-------------------------
F1, F2, F3, UP: connected to AN4 through a resistor network
DOWN, PLAY, LEFT, RIGHT: likewise connected to AN5
The voltage on AN4/ AN5 depends on which keys (or key combo) is pressed
FM/V2 has PLAY and RIGHT switched compared to plain recorder
ON: PB8, low active (plain recorder) / AN3, low active (fm/v2)
OFF: PB4, low active (plain recorder) / AN2, high active (fm/v2)
Player
------
LEFT: AN0
MENU: AN1
RIGHT: AN2
PLAY: AN3
STOP: PA11
ON: PA5
All buttons are low active
Ondio
-----
LEFT, RIGHT, UP, DOWN: connected to AN4 through a resistor network
The voltage on AN4 depends on which keys (or key combo) is pressed
OPTION: AN2, high active (assigned as MENU)
ON/OFF: AN3, low active (assigned as OFF)
*/
#if CONFIG_KEYPAD == RECORDER_PAD
#ifdef HAVE_FMADC
/* FM Recorder super-special levels */
#define LEVEL1 150
#define LEVEL2 385
#define LEVEL3 545
#define LEVEL4 700
#define ROW2_BUTTON1 BUTTON_PLAY
#define ROW2_BUTTON3 BUTTON_RIGHT
#else
/* plain bog standard Recorder levels */
#define LEVEL1 250
#define LEVEL2 500
#define LEVEL3 700
#define LEVEL4 900
#define ROW2_BUTTON1 BUTTON_RIGHT
#define ROW2_BUTTON3 BUTTON_PLAY
#endif /* HAVE_FMADC */
#elif CONFIG_KEYPAD == ONDIO_PAD
/* Ondio levels */
#define LEVEL1 165
#define LEVEL2 415
#define LEVEL3 585
#define LEVEL4 755
#endif /* CONFIG_KEYPAD */
/*
* Get button pressed from hardware
*/
static int button_read(void)
{
int btn = BUTTON_NONE;
int retval;
int data;
#if CONFIG_KEYPAD == IRIVER_H100_PAD
static bool hold_button = false;
static bool remote_hold_button = false;
/* light handling */
if (hold_button && !button_hold())
{
backlight_on();
}
if (remote_hold_button && !remote_button_hold())
{
remote_backlight_on();
}
hold_button = button_hold();
remote_hold_button = remote_button_hold();
/* normal buttons */
if (!button_hold())
{
data = adc_scan(ADC_BUTTONS);
if (data < 0x80)
if (data < 0x30)
if (data < 0x18)
btn = BUTTON_SELECT;
else
btn = BUTTON_UP;
else
if (data < 0x50)
btn = BUTTON_LEFT;
else
btn = BUTTON_DOWN;
else
if (data < 0xb0)
if (data < 0xa0)
btn = BUTTON_RIGHT;
else
btn = BUTTON_OFF;
else
if (data < 0xd0)
btn = BUTTON_MODE;
else
if (data < 0xf0)
btn = BUTTON_REC;
}
/* remote buttons */
if (!remote_button_hold())
{
data = adc_scan(ADC_REMOTE);
if (data < 0x74)
if (data < 0x40)
if (data < 0x20)
if(data < 0x10)
btn = BUTTON_RC_STOP;
else
btn = BUTTON_RC_VOL_DOWN;
else
btn = BUTTON_RC_VOL;
else
if (data < 0x58)
btn = BUTTON_RC_VOL_UP;
else
btn = BUTTON_RC_BITRATE;
else
if (data < 0xb0)
if (data < 0x88)
btn = BUTTON_RC_REC;
else
btn = BUTTON_RC_SOURCE;
else
if (data < 0xd8)
if(data < 0xc0)
btn = BUTTON_RC_FF;
else
btn = BUTTON_RC_MENU;
else
if (data < 0xf0)
btn = BUTTON_RC_REW;
}
/* special buttons */
data = GPIO1_READ;
if (!button_hold() && (data & 0x20 == 0))
btn |= BUTTON_ON;
if (!remote_button_hold() && (data & 0x40 == 0))
btn |= BUTTON_RC_ON;
#elif CONFIG_KEYPAD == RECORDER_PAD
#ifdef HAVE_FMADC
if ( adc_read(ADC_BUTTON_ON) < 512 )
btn |= BUTTON_ON;
if ( adc_read(ADC_BUTTON_OFF) > 512 )
btn |= BUTTON_OFF;
#else
/* check port B pins for ON and OFF */
data = PBDR;
if ((data & 0x0100) == 0)
btn |= BUTTON_ON;
if ((data & 0x0010) == 0)
btn |= BUTTON_OFF;
#endif
/* check F1..F3 and UP */
data = adc_read(ADC_BUTTON_ROW1);
if (data >= LEVEL4)
btn |= BUTTON_F3;
else if (data >= LEVEL3)
btn |= BUTTON_UP;
else if (data >= LEVEL2)
btn |= BUTTON_F2;
else if (data >= LEVEL1)
btn |= BUTTON_F1;
/* Some units have mushy keypads, so pressing UP also activates
the Left/Right buttons. Let's combat that by skipping the AN5
checks when UP is pressed. */
if(!(btn & BUTTON_UP))
{
/* check DOWN, PLAY, LEFT, RIGHT */
data = adc_read(ADC_BUTTON_ROW2);
if (data >= LEVEL4)
btn |= BUTTON_DOWN;
else if (data >= LEVEL3)
btn |= ROW2_BUTTON3;
else if (data >= LEVEL2)
btn |= BUTTON_LEFT;
else if (data >= LEVEL1)
btn |= ROW2_BUTTON1;
}
#elif CONFIG_KEYPAD == PLAYER_PAD
/* buttons are active low */
if (adc_read(0) < 0x180)
btn |= BUTTON_LEFT;
if (adc_read(1) < 0x180)
btn |= BUTTON_MENU;
if(adc_read(2) < 0x180)
btn |= BUTTON_RIGHT;
if(adc_read(3) < 0x180)
btn |= BUTTON_PLAY;
/* check port A pins for ON and STOP */
data = PADR;
if ( !(data & 0x0020) )
btn |= BUTTON_ON;
if ( !(data & 0x0800) )
btn |= BUTTON_STOP;
#elif CONFIG_KEYPAD == ONDIO_PAD
if(adc_read(ADC_BUTTON_OPTION) > 0x200) /* active high */
btn |= BUTTON_MENU;
if(adc_read(ADC_BUTTON_ONOFF) < 0x120) /* active low */
btn |= BUTTON_OFF;
/* Check the 4 direction keys */
data = adc_read(ADC_BUTTON_ROW1);
if (data >= LEVEL4)
btn |= BUTTON_LEFT;
else if (data >= LEVEL3)
btn |= BUTTON_RIGHT;
else if (data >= LEVEL2)
btn |= BUTTON_UP;
else if (data >= LEVEL1)
btn |= BUTTON_DOWN;
#elif CONFIG_KEYPAD == GMINI100_PAD
if (adc_read(7) < 0xE3)
btn |= BUTTON_LEFT;
else if (adc_read(7) < 0x1c5)
btn |= BUTTON_DOWN;
else if (adc_read(7) < 0x2a2)
btn |= BUTTON_RIGHT;
else if (adc_read(7) < 0x38a)
btn |= BUTTON_UP;
if (adc_read(6) < 0x233)
btn |= BUTTON_OFF;
else if (adc_read(6) < 0x288)
btn |= BUTTON_PLAY;
else if (adc_read(6) < 0x355)
btn |= BUTTON_MENU;
data = P7;
if (data & 0x01)
btn |= BUTTON_ON;
#endif /* CONFIG_KEYPAD */
#ifdef HAVE_LCD_BITMAP
if (btn && flipped)
btn = button_flip(btn); /* swap upside down */
#endif
/* Filter the button status. It is only accepted if we get the same
status twice in a row. */
if (btn != last_read)
retval = lastbtn;
else
retval = btn;
last_read = btn;
return retval;
}
#if CONFIG_KEYPAD == IRIVER_H100_PAD
bool button_hold(void)
{
return (GPIO1_READ & 0x00000002)?true:false;
}
bool remote_button_hold(void)
{
return (GPIO1_READ & 0x00100000)?true:false;
}
#endif
int button_status(void)
{
return lastbtn;
}
void button_clear_queue(void)
{
queue_clear(&button_queue);
}
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