| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id:$ |
| * |
| * Copyright (C) 2010 Marcin Bukat |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY |
| * KIND, either express or implied. |
| * |
| ****************************************************************************/ |
| |
| #include "config.h" |
| #include "adc.h" |
| #include "powermgmt.h" |
| |
| const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] = |
| { |
| 3700 |
| }; |
| |
| const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] = |
| { |
| 3650 |
| }; |
| |
| /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */ |
| const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] = |
| { |
| /* from OF and measurements voltage range is 3.7-4.1 V */ |
| { 3700, 3740, 3780, 3820, 3860, 3900, 3940, 3980, 4020, 4060, 4100 } |
| }; |
| |
| /* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */ |
| const unsigned short percent_to_volt_charge[11] = |
| { |
| /* values measured over one full charging cycle */ |
| 3540, 3860, 3930, 3980, 4000, 4020, 4040, 4080, 4130, 4180, 4230 /* LiPo */ |
| }; |
| |
| /* 3.33V as reference */ |
| #define BATTERY_SCALE_FACTOR 3330 |
| |
| |
| /* Returns battery voltage from ADC [millivolts] */ |
| unsigned int battery_adc_voltage(void) |
| { |
| return (adc_read(ADC_BATTERY) * BATTERY_SCALE_FACTOR) >> 11; |
| } |
| |