c1bd9b0361
* Introduce CONFIG_BATTERY_MEASURE define, to allow targets (application) to break powermgmt.c's assumption about the ability to read battery voltage. There's now additionally percentage (android) and remaining time measure (maemo). No measure at all also works (sdl app). If voltage can't be measured, then battery_level() is king and it'll be used for power_history and runtime estimation. * Implement target's API in the simulator, i.e. _battery_voltage(), so it doesn't need to implement it's own powermgmt.c and other stubs. Now the sim behaves much more like a native target, although it still changes the simulated battery voltage quickly, * Other changes include include renaming battery_adc_voltage() to _battery_voltage(), for consistency with the new target functions and making some of the apps code aware that voltage and runtime estimation is not always available. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31548 a1c6a512-1295-4272-9138-f99709370657
90 lines
2.7 KiB
C
90 lines
2.7 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 = 4100;
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unsigned short current_aux = 4100;
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static unsigned short current_voltage = 4100;
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/* This specifies the battery level that writes are still safe */
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const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
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{
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3600
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};
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/* Below this the player cannot be considered to operate reliably */
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const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
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{
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3580
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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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{ 3600, 3650, 3700, 3750, 3800, 3850, 3900, 3950, 4000, 4090, 4150 },
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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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int _battery_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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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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if(tsc2100_read_volt(&bat1, &bat2, &aux))
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{
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/* Calculation was:
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* (val << 10) / 4096 * 6 * 2.5
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*/
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current_voltage = (short)( (int) (bat1 * 15) >> 2 );
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current_bat2 = (short)( (bat2 * 15) >> 2 );
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current_aux = (short)( (aux * 15) >> 2 );
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}
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return current_voltage;
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}
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