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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Linus Nielsen Feltzing
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef _ADC_H_
#define _ADC_H_
#define NUM_ADC_CHANNELS 8
#define ADC_BATTERY 0 /* Battery voltage always reads 0x3FF due to
silly scaling */
#define ADC_CHARGE_REGULATOR 1 /* Regulator reference voltage, should read
about 0x1c0 when charging, else 0x3FF */
#define ADC_USB_POWER 2 /* USB, reads 0x3FF when USB is inserted */
#define ADC_BUTTON_ROW1 4 /* Used for scanning the keys, different
voltages for different keys */
#define ADC_BUTTON_ROW2 5 /* Used for scanning the keys, different
voltages for different keys */
#define ADC_UNREG_POWER 6 /* Battery voltage with a better scaling */
#define ADC_EXT_POWER 7 /* The external power voltage, V=X*0.0148 */
#ifdef ARCHOS_RECORDER
#define BATTERY_SCALE_FACTOR 6465
#else
#define BATTERY_SCALE_FACTOR 6546
#endif
#define EXT_SCALE_FACTOR 14800
unsigned short adc_read(int channel);
void adc_init(void);
#endif
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