rockbox/firmware/target/arm/s5l8700/ipodnano2g/powermgmt-nano2g.c
Michael Sparmann b3c18aeb4d Somewhat calibrated battery parameters for Nano2G - still not very accurate though, especially while charging.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24722 a1c6a512-1295-4272-9138-f99709370657
2010-02-17 15:56:30 +00:00

63 lines
2.1 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright © 2008 Rafaël Carré
*
* 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 "powermgmt.h"
#include "pmu-target.h"
const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
{
/* TODO: this is just an initial guess */
3600
};
const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
{
/* TODO: this is just an initial guess */
3350
};
/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
{
/* TODO: simple uncalibrated curve, linear except for first 10% */
{ 3377, 3741, 3783, 3820, 3856, 3892, 3934, 3989, 4061, 4144, 4249 }
};
#if CONFIG_CHARGING
/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
const unsigned short percent_to_volt_charge[11] =
{
/* TODO: simple uncalibrated curve, linear except for first 10% */
3344, 3969, 4038, 4105, 4205, 4310, 4312, 4314, 4316, 4318, 4320
};
#endif /* CONFIG_CHARGING */
/* ADC should read 0x3ff=6.00V */
#define BATTERY_SCALE_FACTOR 6000
/* full-scale ADC readout (2^10) in millivolt */
/* Returns battery voltage from ADC [millivolts] */
unsigned int battery_adc_voltage(void)
{
return pmu_read_battery_voltage();
}