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53 lines
1.9 KiB
C
53 lines
1.9 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 © 2011 Andrew Ryabinin
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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 HiFiMAN HM-801.
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I don't know how to calculate battery voltage, so all values represented here is just
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values from adc battery channel, not millivolts.
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Discharge and charge curves have not been calibrated yet.
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*/
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unsigned short battery_level_disksafe = 430;
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unsigned short battery_level_shutoff = 425; /* OF power off device when this value reached */
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/* adc values of 0%, 10%, ... 100% when charging disabled */
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unsigned short percent_to_volt_discharge[11] =
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{
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/* TODO: simple uncalibrated curve */
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425, 430, 440, 450, 460, 470, 480, 490, 500, 510, 520
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};
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/* adc values of 0%, 10%, ... 100% when charging enabled */
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unsigned short percent_to_volt_charge[11] =
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/* TODO: simple uncalibrated curve */
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{ 425, 430, 440, 450, 460, 470, 480, 490, 500, 510, 520 };
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int _battery_voltage(void)
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{
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return adc_read(ADC_BATTERY);
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}
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