Well, I tried my average trick, and it works amazingly well !! My down
button which was moving from 0xC8 to about 0xE0 hardly reach 0xD0 now.
I join my button-x5.c file.
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id: button-x5.c 11967 2007-01-09 23:29:07Z linus $
*
* Copyright (C) 2006 by Linus Nielsen Feltzing
*
* 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.
*
****************************************************************************/
#include "config.h"
#include "system.h"
#include "button.h"
#include "backlight.h"
#include "adc.h"
#include "lcd-remote-target.h"
/* have buttons scan by default */
static bool button_scan_on = true;
static bool hold_button = false;
static bool remote_hold_button = false;
void button_init_device(void)
{
/* Power, Remote Play & Hold switch */
GPIO_FUNCTION |= 0x0e000000;
GPIO_ENABLE &= ~0x0e000000;
}
void button_enable_scan(bool enable)
{
button_scan_on = enable;
}
bool button_scan_enabled(void)
{
return button_scan_on;
}
bool button_hold(void)
{
return (GPIO_READ & 0x08000000) == 0;
}
bool remote_button_hold(void)
{
return remote_hold_button;
}
int button_read_device(void)
{
int btn = BUTTON_NONE;
bool hold_button_old;
bool remote_hold_button_old;
int data;
#define FILTER 5
const int tab_size = FILTER;
static int tab[FILTER];
const int tab_deltamax = 10;
int tab_min = 0xFF;
int tab_max = 0x00;
int tab_delta;
int tab_sum = 0;
int tab_average;
int i;
/* normal buttons */
hold_button_old = hold_button;
hold_button = button_hold();
#ifndef BOOTLOADER
/* give BL notice if HB state chaged */
if (hold_button != hold_button_old)
backlight_hold_changed(hold_button);
#endif
if (button_scan_on && !hold_button)
{
data = adc_scan(ADC_BUTTONS);
/* BUTTON FILTER by Nicolas GIF <nicolas.gif_at_free.fr*/
//rotate array
for (i = tab_size-1; i > 0; i--)
{
tab[i] = tab[i-1];
}
tab[0] = data;
//sum, min, max
for (i = 0; i < tab_size; i++)
{
tab_sum += tab[i];
if (tab[i] < tab_min)
{
tab_min = tab[i];
}
if (tab[i] > tab_max)
{
tab_max = tab[i];
}
}
//average
tab_average = tab_sum / tab_size;
//delta
tab_delta = tab_max - tab_min;
if (tab_delta < tab_deltamax)
{
data = tab_average;
}
/*END FILTER*/
if (data < 0xf0)
{
if(data < 0x7c)
if(data < 0x42)
btn = BUTTON_LEFT;
else
if(data < 0x62)
btn = BUTTON_RIGHT;
else
btn = BUTTON_SELECT;
else
if(data < 0xb6)
if(data < 0x98)
btn = BUTTON_REC;
else
btn = BUTTON_PLAY;
else
if(data < 0xd3)
btn = BUTTON_DOWN;
else
btn = BUTTON_UP;
}
}
/* remote buttons */
data = remote_detect() ? adc_scan(ADC_REMOTE) : 0xff;
remote_hold_button_old = remote_hold_button;
remote_hold_button = data < 0x17;
#ifndef BOOTLOADER
if (remote_hold_button != remote_hold_button_old)
remote_backlight_hold_changed(remote_hold_button);
#endif
if (!remote_hold_button)
{
if (data < 0xee)
{
if(data < 0x7a)
if(data < 0x41)
btn |= BUTTON_RC_FF;
else
if(data < 0x61)
btn |= BUTTON_RC_REW;
else
btn |= BUTTON_RC_MODE;
else
if(data < 0xb4)
if(data < 0x96)
btn |= BUTTON_RC_REC;
else
btn |= BUTTON_RC_MENU;
else
if(data < 0xd1)
btn |= BUTTON_RC_VOL_UP;
else
btn |= BUTTON_RC_VOL_DOWN;
}
}
data = GPIO_READ;
/* hold and power are mutually exclusive */
if (!(data & 0x04000000))
btn |= BUTTON_POWER;
/* remote play button should be dead if hold */
if (!remote_hold_button && !(data & 0x02000000))
btn |= BUTTON_RC_PLAY;
return btn;
}
Received on 2007-03-10