6ffbe3896b
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13207 a1c6a512-1295-4272-9138-f99709370657
57 lines
1.5 KiB
C
57 lines
1.5 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) 2006 by Barry Wardell
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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 "cpu.h"
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#include "system.h"
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#include "kernel.h"
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#include "thread.h"
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#include "adc.h"
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static unsigned short adcdata[NUM_ADC_CHANNELS];
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unsigned short adc_read(int channel)
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{
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return adcdata[channel];
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}
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static void adc_tick(void)
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{
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if (ADCST & 0x10) {
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adcdata[0] = ADCCH0 & 0x3ff;
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adcdata[1] = ADCCH1 & 0x3ff;
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adcdata[2] = ADCCH2 & 0x3ff;
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adcdata[3] = ADCCH3 & 0x3ff;
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adcdata[4] = ADCCH4 & 0x3ff;
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ADCST = 0xa;
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}
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}
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void adc_init(void)
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{
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ADCR24 = 0xaaaaa;
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ADCR28 = 0;
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ADCST = 2;
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ADCST = 0xa;
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while (!(ADCST & 0x10));
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adc_tick();
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tick_add_task(adc_tick);
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}
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