e087751b10
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23948 a1c6a512-1295-4272-9138-f99709370657
83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/***************************************************************************
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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) 2007 by Karl Kurbjun
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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 "config.h"
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#include "adc.h"
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#include "powermgmt.h"
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#include "tsc2100.h"
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#include "kernel.h"
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unsigned short current_bat2 = 4200;
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unsigned short current_aux = 4200;
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static unsigned short current_voltage = 4200;
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const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
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{
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3450
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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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3400
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};
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/* Right now these are linear translations, it would be good to model them
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* appropriate to the actual battery curve.
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*/
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/* 6.10 format */
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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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{ 3400, 3300, 3600, 3700, 3800, 3900, 4000, 4100, 4200, 4300, 4400 },
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};
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/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
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const unsigned short percent_to_volt_charge[11] =
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{
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4000, 4105, 4210, 4315, 4420, 4525, 4630, 4735, 4840, 4945, 5050,
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};
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/* Returns battery voltage from ADC [millivolts] */
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unsigned int battery_adc_voltage(void)
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{
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short bat1, bat2, aux;
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static unsigned last_tick = 0;
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short tsadc;
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if(tsc2100_read_volt(&bat1, &bat2, &aux)){
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current_voltage=((short)((int)(bat1<<10)/4096*6*2.5));
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current_bat2=((short)((int)(bat2<<10)/4096*6*2.5));
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current_aux=((short)((int)(aux<<10)/4096*6*2.5));
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}
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tsadc=tsc2100_readreg(TSADC_PAGE, TSADC_ADDRESS);
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/* Set the TSC2100 to read voltages if not busy with pen */
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if(!(tsadc & TSADC_PSTCM))
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{
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tsc2100_set_mode(true, 0x0B);
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last_tick = current_tick;
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}
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return current_voltage;
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}
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