e597ca4732
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3219 a1c6a512-1295-4272-9138-f99709370657
47 lines
2 KiB
C
47 lines
2 KiB
C
/***************************************************************************
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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) 2002 by Linus Nielsen Feltzing
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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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#ifndef _ADC_H_
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#define _ADC_H_
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#define NUM_ADC_CHANNELS 8
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#define ADC_BATTERY 0 /* Battery voltage always reads 0x3FF due to
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silly scaling */
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#ifdef HAVE_FMADC
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#define ADC_CHARGE_REGULATOR 0 /* Uh, we read the battery voltage? */
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#define ADC_USB_POWER 1 /* USB, reads 0x000 when USB is inserted */
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#else
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#define ADC_CHARGE_REGULATOR 1 /* Regulator reference voltage, should read
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about 0x1c0 when charging, else 0x3FF */
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#define ADC_USB_POWER 2 /* USB, reads 0x3FF when USB is inserted */
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#endif
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#define ADC_BUTTON_ROW1 4 /* Used for scanning the keys, different
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voltages for different keys */
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#define ADC_BUTTON_ROW2 5 /* Used for scanning the keys, different
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voltages for different keys */
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#define ADC_UNREG_POWER 6 /* Battery voltage with a better scaling */
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#define ADC_EXT_POWER 7 /* The external power voltage, V=X*0.0148 */
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#define EXT_SCALE_FACTOR 14800
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unsigned short adc_read(int channel);
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void adc_init(void);
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#endif
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