59 lines
2 KiB
C
59 lines
2 KiB
C
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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: powermgmt-e200.c 14375 2007-08-17 06:45:18Z amiconn $
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*
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* Copyright (C) 2002 by Heikki Hannikainen, Uwe Freese
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* Revisions copyright (C) 2005 by Gerald Van Baren
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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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const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
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{
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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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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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/* Sansa Li Ion 750mAH FIXME this is a first linear approach */
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{ 3300, 3390, 3480, 3570, 3660, 3750, 3840, 3930, 4020, 4110, 4200 },
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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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/* Sansa Li Ion 750mAH FIXME*/
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3300, 3390, 3480, 3570, 3660, 3750, 3840, 3930, 4020, 4110, 4200
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};
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/* ADC should read 0x3ff=5.12V */
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#define BATTERY_SCALE_FACTOR 5125
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/* full-scale ADC readout (2^10) in millivolt */
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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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return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10;
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}
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