Contiki 2.6
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00001 /* 00002 * Copyright (c) 2007, Swedish Institute of Computer Science 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. Neither the name of the Institute nor the names of its contributors 00014 * may be used to endorse or promote products derived from this software 00015 * without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 00018 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 00021 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00022 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00023 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00024 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00025 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00026 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00027 * SUCH DAMAGE. 00028 * 00029 * This file is part of the Contiki operating system. 00030 * 00031 */ 00032 00033 /** 00034 * \file 00035 * ADC functions. 00036 * \author 00037 * Nicolas Tsiftes <nvt@sics.se> 00038 */ 00039 00040 #include "contiki.h" 00041 #include "contiki-msb430.h" 00042 00043 void 00044 adc_init(void) 00045 { 00046 ADC12CTL0 = SHT0_15 | SHT1_15 | MSC; 00047 00048 /* 00049 * SHP: sampling timer 00050 * CONSEQ3: repeat sequence of channels 00051 * CSTARTADD: conversion start address 0 00052 */ 00053 ADC12CTL1 = SHP | CONSEQ_3 | CSTARTADD_0; 00054 00055 /* P60: A0 */ 00056 ADC12MCTL0 = INCH_0 | SREF_0; 00057 ADC12MCTL1 = INCH_1 | SREF_0; 00058 ADC12MCTL2 = INCH_2 | SREF_0; 00059 00060 /* P61: A1 */ 00061 ADC12MCTL3 = ADC12MCTL4 = ADC12MCTL5 = INCH_1 | SREF_0; 00062 00063 /* P62: A2 */ 00064 ADC12MCTL6 = ADC12MCTL7 = ADC12MCTL8 = ADC12MCTL9 = INCH_2 | SREF_0; 00065 00066 /* P63: A3 */ 00067 ADC12MCTL10 = INCH_3 | SREF_0; 00068 00069 /* P64: A4 */ 00070 ADC12MCTL11 = INCH_4 | SREF_0; 00071 00072 /* P65: A5 */ 00073 ADC12MCTL12 = INCH_5 | SREF_0; 00074 00075 /* INCH10: Temperature sensor. */ 00076 ADC12MCTL13 = INCH_10 | SREF_0 | EOS; 00077 } 00078 00079 void 00080 adc_on(void) 00081 { 00082 ADC12CTL0 |= ADC12ON; 00083 clock_delay(20000); 00084 ADC12CTL0 |= ENC; 00085 ADC12CTL0 |= ADC12SC; 00086 } 00087 00088 void 00089 adc_off(void) 00090 { 00091 ADC12CTL0 &= ~ENC; 00092 clock_delay(20000); 00093 ADC12CTL0 &= ~ADC12ON; 00094 }