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
67 lines
2.4 KiB
C
67 lines
2.4 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 © 2009 Bertrik Sikken
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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 "adc-target.h"
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#include "powermgmt.h"
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/* Battery voltage calculation and discharge/charge curves for the Meizu M3.
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Battery voltage is calculated under the assumption that the adc full-scale
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readout represents 3.00V and that the battery ADC channel is fed with
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exactly half of the battery voltage (through a resistive divider).
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Discharge and charge curves have not been calibrated yet.
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*/
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const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
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{
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/* TODO: this is just an initial guess */
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3400
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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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/* TODO: this is just an initial guess */
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3300
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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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/* TODO: simple uncalibrated curve, linear except for first 10% */
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{ 3300, 3600, 3665, 3730, 3795, 3860, 3925, 3990, 4055, 4120, 4185 }
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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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/* TODO: simple uncalibrated curve, linear except for first 10% */
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{ 3300, 3600, 3665, 3730, 3795, 3860, 3925, 3990, 4055, 4120, 4185 };
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/* full-scale ADC readout (2^10) in millivolt */
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#define BATTERY_SCALE_FACTOR 6000
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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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return (adc_read(ADC_BATTERY) * BATTERY_SCALE_FACTOR) >> 10;
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}
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