1 /***************************************************************************
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
10 * Copyright (C) 2002 by Heikki Hannikainen, Uwe Freese
11 * Revisions copyright (C) 2005 by Gerald Van Baren
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version 2
16 * of the License, or (at your option) any later version.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ****************************************************************************/
25 #include "powermgmt.h"
27 /* TODO: Not yet calibrated */
29 const unsigned short battery_level_dangerous
[BATTERY_TYPES_COUNT
] =
34 const unsigned short battery_level_shutoff
[BATTERY_TYPES_COUNT
] =
39 /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
40 const unsigned short percent_to_volt_discharge
[BATTERY_TYPES_COUNT
][11] =
42 { 3733, 3772, 3821, 3840, 3869, 3917, 3985, 4034, 4072, 4140, 4198 }
45 /* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
46 const unsigned short percent_to_volt_charge
[11] =
48 3956, 3995, 4024, 4043, 4063, 4082, 4111, 4140, 4179, 4218, 4266
51 #define BATTERY_SCALE_FACTOR 4650
52 /* full-scale ADC readout (2^10) in millivolt */
54 /* Returns battery voltage from ADC [millivolts] */
55 unsigned int battery_adc_voltage(void)
57 return (adc_read(ADC_UNREG_POWER
) * BATTERY_SCALE_FACTOR
) >> 10;