rockbox/firmware/target/arm/samsung/yh925/powermgmt-yh925.c
Szymon Dziok 228c47be4c Samsung YH-925: Don't add anything to adc value while reading it.
OF doesn't do such thing. Values in mV are converted proportionally, so no change
 to the battery meter.

Change-Id: Ic545b0514535e7f17f0379ed02f6bdf515f69ac6
2014-07-28 22:11:33 +02:00

56 lines
1.9 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Heikki Hannikainen, Uwe Freese
* Revisions copyright (C) 2005 by Gerald Van Baren
*
* 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"
const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
{
3659
};
const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
{
3609
};
/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
{
{ 3609, 3731, 3789, 3818, 3855, 3885, 3933, 3995, 4050, 4132, 4216 }
};
/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
const unsigned short percent_to_volt_charge[11] =
{
3777, 3880, 3897, 3907, 3927, 3945, 4006, 4025, 4074, 4131, 4216
};
#define BATTERY_SCALE_FACTOR 4650
/* full-scale ADC readout (2^10) in millivolt */
/* Returns battery voltage from ADC [millivolts] */
int _battery_voltage(void)
{
return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10;
}