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Platform-specific devices.

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nvt-se 2007-06-28 12:52:41 +00:00
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platform/msb430/dev/adc.c Normal file
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/*
* Copyright (c) 2007, Swedish Institute of Computer Science
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*/
/**
* \file
* ADC functions.
* \author
* Nicolas Tsiftes <nvt@sics.se>
*/
#include <io.h>
#include <signal.h>
#include "contiki-msb430.h"
void
adc_init(void) {
//Setup ADC12, ref., sampling time, REFON for DAC!!
ADC12CTL0 = SHT0_15 + SHT1_15 + MSC;
// Use sampling timer, repeat-sequence-of-channels
ADC12CTL1 = SHP + CONSEQ_3 + CSTARTADD_0;
ADC12MCTL0 = INCH_0 + SREF_0; // P60: AIN0
ADC12MCTL1 = INCH_0 + SREF_0; // P60: AIN0
ADC12MCTL2 = INCH_0 + SREF_0; // P60: AIN0
ADC12MCTL3 = INCH_1 + SREF_0; // P61: AIN1
ADC12MCTL4 = INCH_1 + SREF_0; // P61: AIN1
ADC12MCTL5 = INCH_1 + SREF_0; // P61: AIN1
ADC12MCTL6 = INCH_2 + SREF_0; // P62: AIN2
ADC12MCTL7 = INCH_2 + SREF_0; // P62: AIN2
ADC12MCTL8 = INCH_2 + SREF_0; // P62: AIN2
ADC12MCTL9 = INCH_2 + SREF_0; // P62: AIN2
ADC12MCTL10 = INCH_3 + SREF_0; // P63: AIN2
ADC12MCTL11 = INCH_4 + SREF_0; // P64: AIN3
ADC12MCTL12 = INCH_5 + SREF_0; // P65: AIN4
ADC12MCTL13 = INCH_10 + SREF_0 + EOS; // Temp diode
}
void
adc_on(void)
{
ADC12CTL0 |= ADC12ON;
clock_delay(600);
ADC12CTL0 |= ENC;
ADC12CTL0 |= ADC12SC;
}
void
adc_off(void)
{
ADC12CTL0 &= ~ENC;
clock_delay(600);
ADC12CTL0 &= ~ADC12ON;
}