| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2007 by Karl Kurbjun |
| * |
| * 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" |
| #include "tsc2100.h" |
| #include "kernel.h" |
| |
| unsigned short current_voltage = 3910; |
| const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] = |
| { |
| 0 |
| }; |
| |
| const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] = |
| { |
| 0 |
| }; |
| |
| /* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */ |
| const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] = |
| { |
| { 100, 300, 400, 500, 600, 700, 800, 900, 1000, 1200, 1320 }, |
| }; |
| |
| /* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */ |
| const unsigned short percent_to_volt_charge[11] = |
| { |
| 100, 300, 400, 500, 600, 700, 800, 900, 1000, 1200, 1320, |
| }; |
| void read_battery_inputs(void) |
| { |
| short tsadc = tsc2100_readreg(TSADC_PAGE, TSADC_ADDRESS); |
| short adscm = (tsadc&TSADC_ADSCM_MASK)>>TSADC_ADSCM_SHIFT; |
| if (adscm == 0xb) /* battery is available */ |
| { |
| current_voltage = tsc2100_readreg(0, 5); /* BAT1 */ |
| tsc2100_readreg(0, 6); /* BAT2 */ |
| tsc2100_readreg(0, 7); /* AUX */ |
| /* reset the TSC2100 to read touches */ |
| tsadc &= ~(TSADC_PSTCM|TSADC_ADST|TSADC_ADSCM_MASK); |
| tsadc |= TSADC_PSTCM|(0x2<<TSADC_ADSCM_SHIFT); |
| tsc2100_writereg(TSADC_PAGE, TSADC_ADDRESS, tsadc); |
| tsc2100_writereg(TSSTAT_PAGE, TSSTAT_ADDRESS, 2<<TSSTAT_PINTDAV_SHIFT); |
| } |
| } |
| |
| /* Returns battery voltage from ADC [millivolts] */ |
| unsigned int battery_adc_voltage(void) |
| { |
| static unsigned last_tick = 0; |
| short tsadc = tsc2100_readreg(TSADC_PAGE, TSADC_ADDRESS); |
| if (TIME_BEFORE(last_tick+2*HZ, current_tick)) |
| { |
| tsadc &= ~(TSADC_PSTCM|TSADC_ADST|TSADC_ADSCM_MASK); |
| tsadc |= 0xb<<TSADC_ADSCM_SHIFT; |
| tsc2100_writereg(TSADC_PAGE, TSADC_ADDRESS, tsadc&(~(1<<15))); |
| tsc2100_writereg(TSSTAT_PAGE, TSSTAT_ADDRESS, 2<<TSSTAT_PINTDAV_SHIFT); |
| last_tick = current_tick; |
| } |
| else |
| read_battery_inputs(); |
| return current_voltage; |
| } |
| |