| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2002 by Heikki Hannikainen, Uwe Freese |
| * Revisions copyright (C) 2005 by Gerald Van Baren |
| * |
| * 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] = |
| { |
| 4750 |
| }; |
| |
| const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] = |
| { |
| 4400 |
| }; |
| |
| /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */ |
| const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] = |
| { |
| /* original values were taken directly after charging, but it should show |
| 100% after turning off the device for some hours, too */ |
| { 4500, 4810, 4910, 4970, 5030, 5070, 5120, 5140, 5170, 5250, 5400 } |
| /* orig. values: ...,5280,5600 */ |
| }; |
| |
| /* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */ |
| const unsigned short percent_to_volt_charge[11] = |
| { |
| /* values guessed, see |
| http://www.seattlerobotics.org/encoder/200210/LiIon2.pdf until someone |
| measures voltages over a charging cycle */ |
| 4760, 5440, 5510, 5560, 5610, 5640, 5660, 5760, 5820, 5840, 5850 /* NiMH */ |
| }; |
| |
| #define BATTERY_SCALE_FACTOR 6620 |
| /* full-scale ADC readout (2^10) in millivolt */ |
| |
| /* Returns battery voltage from ADC [millivolts] */ |
| unsigned int battery_adc_voltage(void) |
| { |
| return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10; |
| } |