mirror of
https://github.com/Rockbox/rockbox.git
synced 2025-12-08 12:45:26 -05:00
52 lines
1.7 KiB
C
52 lines
1.7 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2010 Marcin Bukat
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#include "config.h"
|
|
#include "adc.h"
|
|
#include "powermgmt.h"
|
|
|
|
unsigned short battery_level_disksafe = 3600;
|
|
|
|
unsigned short battery_level_shutoff = 3500;
|
|
|
|
/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
|
|
unsigned short percent_to_volt_discharge[11] =
|
|
{
|
|
3500, 3566, 3597, 3619, 3644, 3676, 3732, 3806, 3868, 3937, 4004
|
|
};
|
|
|
|
/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
|
|
unsigned short percent_to_volt_charge[11] =
|
|
{
|
|
/* values measured over one full charging cycle */
|
|
3386, 3872, 3904, 3942, 3996, 4029, 4033, 4036, 4038, 4039, 4041
|
|
};
|
|
|
|
/* 3.33V as reference */
|
|
#define BATTERY_SCALE_FACTOR 3330
|
|
|
|
|
|
/* Returns battery voltage from ADC [millivolts] */
|
|
int _battery_voltage(void)
|
|
{
|
|
return (adc_read(ADC_BATTERY) * BATTERY_SCALE_FACTOR) >> 11;
|
|
}
|
|
|