4c06ad6e72
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15271 a1c6a512-1295-4272-9138-f99709370657
82 lines
2.8 KiB
C
Executable file
82 lines
2.8 KiB
C
Executable file
/***************************************************************************
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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 (C) 2007 by Karl Kurbjun
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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 "powermgmt.h"
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#include "tsc2100.h"
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#include "kernel.h"
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unsigned short current_voltage = 3910;
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const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
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{
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3450
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};
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const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
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{
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3400
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};
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/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
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const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
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{
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{ 3480, 3550, 3590, 3610, 3630, 3650, 3700, 3760, 3800, 3910, 3990 },
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};
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/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
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const unsigned short percent_to_volt_charge[11] =
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{
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3480, 3550, 3590, 3610, 3630, 3650, 3700, 3760, 3800, 3910, 3990
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};
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void read_battery_inputs(void)
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{
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short tsadc = tsc2100_readreg(TSADC_PAGE, TSADC_ADDRESS);
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short adscm = (tsadc&TSADC_ADSCM_MASK)>>TSADC_ADSCM_SHIFT;
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if (adscm == 0xb) /* battery is available */
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{
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current_voltage = tsc2100_readreg(0, 5); /* BAT1 */
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tsc2100_readreg(0, 6); /* BAT2 */
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tsc2100_readreg(0, 7); /* AUX */
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/* reset the TSC2100 to read touches */
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tsadc &= ~(TSADC_PSTCM|TSADC_ADST|TSADC_ADSCM_MASK);
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tsadc |= TSADC_PSTCM|(0x2<<TSADC_ADSCM_SHIFT);
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tsc2100_writereg(TSADC_PAGE, TSADC_ADDRESS, tsadc);
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tsc2100_writereg(TSSTAT_PAGE, TSSTAT_ADDRESS, 2<<TSSTAT_PINTDAV_SHIFT);
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}
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}
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/* Returns battery voltage from ADC [millivolts] */
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unsigned int battery_adc_voltage(void)
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{
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static unsigned last_tick = 0;
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short tsadc = tsc2100_readreg(TSADC_PAGE, TSADC_ADDRESS);
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if (TIME_BEFORE(last_tick+2*HZ, current_tick))
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{
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tsadc &= ~(TSADC_PSTCM|TSADC_ADST|TSADC_ADSCM_MASK);
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tsadc |= 0xb<<TSADC_ADSCM_SHIFT;
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tsc2100_writereg(TSADC_PAGE, TSADC_ADDRESS, tsadc&(~(1<<15)));
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tsc2100_writereg(TSSTAT_PAGE, TSSTAT_ADDRESS, 2<<TSSTAT_PINTDAV_SHIFT);
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last_tick = current_tick;
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}
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else
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read_battery_inputs();
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return current_voltage;
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}
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