2014-08-30 11:15:53 +00:00
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2010 by Thomas Martitz
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdbool.h>
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#include <stdio.h>
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2014-10-13 19:21:01 +00:00
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#include <stdlib.h>
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2014-08-30 11:15:53 +00:00
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#include "config.h"
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#include "power.h"
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#include "powermgmt.h"
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2014-10-13 19:21:01 +00:00
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2014-08-30 11:15:53 +00:00
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unsigned int power_input_status(void)
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{
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int val;
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FILE *f = fopen("/sys/class/power_supply/ac/present", "r");
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fscanf(f, "%d", &val);
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fclose(f);
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return val?POWER_INPUT_MAIN_CHARGER:POWER_INPUT_NONE;
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}
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2014-10-13 19:21:01 +00:00
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/* Returns true, if battery is charging, false else. */
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bool charging_state( void )
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{
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/* Full, Charging, Discharging */
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char state[9];
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/* true if charging. */
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bool charging = false;
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FILE *f = fopen( "/sys/class/power_supply/battery/status", "r" );
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if( f != NULL )
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{
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if( fgets( state, 9, f ) != NULL )
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{
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charging = ( strcmp( state, "Charging" ) == 0 );
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}
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}
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fclose( f );
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return charging;
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}
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/* Values for stock PISEN battery. TODO: Needs optimization */
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2014-08-30 11:15:53 +00:00
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const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
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{
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3380
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};
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const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
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{
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3100
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};
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/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
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const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
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{
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{ 3370, 3650, 3700, 3740, 3780, 3820, 3870, 3930, 4000, 4090, 4190 }
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};
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2014-10-13 19:21:01 +00:00
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/* Voltages (millivolt) of 0%, 10%, ... 100% when charging is enabled. */
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2014-08-30 11:15:53 +00:00
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const unsigned short percent_to_volt_charge[11] =
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{
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2014-10-13 19:21:01 +00:00
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3370, 3650, 3700, 3740, 3780, 3820, 3870, 3930, 4000, 4090, 4190
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2014-08-30 11:15:53 +00:00
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};
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/* Returns battery voltage from android measurement [millivolts] */
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int _battery_voltage(void)
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{
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int val;
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FILE *f = fopen("/sys/class/power_supply/battery/voltage_now", "r");
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fscanf(f, "%d", &val);
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fclose(f);
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return (val/1000);
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}
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