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/***************************************************************************
* __________ __ ___
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C) 2014 by Ilia Sergachev: Initial Rockbox port to iBasso DX50
* Copyright (C) 2014 by Mario Basister: iBasso DX90 port
* Copyright (C) 2014 by Simon Rothen: Initial Rockbox repository submission, additional features
* Copyright (C) 2014 by Udo Schläpfer: Code clean up, additional features
*
* 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 <stdio.h>
#include "config.h"
#include "debug.h"
#include "panic.h"
#include "debug-ibasso.h"
#include "sysfs-ibasso.h"
/* Based on batterymonitor with PISEN and Samsung SIII battery. */
const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
{
3600
};
const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
{
3500
};
/*
Averages at percent of running time from five measuremnts with PISEN and Samsung SIII battery
during normal usage.
Mongo default values (?)
< 3660 (0%), < 3730 (1% - 10%), < 3780 (11% - 20%), < 3830 (21% - 40%), < 3950 (41% - 60%),
< 4080 (61% - 80%), > 4081 (81% - 100%)
*/
const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
{
{ 3522, 3660, 3720, 3752, 3784, 3827, 3896, 3978, 4072, 4168, 4255 }
};
/* Copied from percent_to_volt_discharge. */
const unsigned short percent_to_volt_charge[11] =
{
3500, 3544, 3578, 3623, 3660, 3773, 3782, 3853, 3980, 4130, 4360
};
static int _battery_present = -1;
int _battery_voltage(void)
{
/*TRACE;*/
if( (_battery_present == -1)
&& (! sysfs_get_int(SYSFS_BATTERY_PRESENT, &_battery_present)))
{
/* This check is only done once at startup. */
DEBUGF("ERROR %s: Can not get current battery availabilty.", __func__);
_battery_present = 1;
}
int val;
if(_battery_present == 1)
{
/* Battery is present. */
/*
/sys/class/power_supply/battery/voltage_now
Voltage in microvolt.
*/
if(! sysfs_get_int(SYSFS_BATTERY_VOLTAGE_NOW, &val))
{
DEBUGF("ERROR %s: Can not get current battery voltage.", __func__);
return 0;
}
}
else
{
/*
No battery, so we have to be running solely from USB power.
This will prevent Rockbox from forcing shutdown due to low power.
*/
/*
/sys/class/power_supply/usb/voltage_now
Voltage in microvolt.
*/
if(! sysfs_get_int(SYSFS_USB_POWER_VOLTAGE_NOW, &val))
{
DEBUGF("ERROR %s: Can not get current USB voltage.", __func__);
return 0;
}
}
return(val / 1000);
}
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