92 lines
3.2 KiB
C
92 lines
3.2 KiB
C
/*
|
|
* Copyright (c) 2010, 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.
|
|
*
|
|
*
|
|
* -----------------------------------------------------------------
|
|
*
|
|
* Author : Joakim Eriksson
|
|
* Created : 2010-02-02
|
|
* Updated : $Date: 2010/02/06 18:28:26 $
|
|
* $Revision: 1.2 $
|
|
*/
|
|
|
|
#include "contiki.h"
|
|
|
|
static uint8_t adc_on;
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
sky_sensors_activate(uint8_t type)
|
|
{
|
|
uint8_t pre = adc_on;
|
|
|
|
adc_on |= type;
|
|
P6SEL |= type;
|
|
|
|
if(pre == 0 && adc_on > 0) {
|
|
P6DIR = 0xff;
|
|
P6OUT = 0x00;
|
|
/* if nothing was started before, start up the ADC system */
|
|
/* Set up the ADC. */
|
|
/* ADC12CTL0 = REF2_5V + SHT0_6 + SHT1_6 + MSC; /\* Setup ADC12, ref., sampling time *\/ */
|
|
/* ADC12CTL1 = SHP + CONSEQ_3 + CSTARTADD_0; /\* Use sampling timer, repeat-sequenc-of-channels */
|
|
/* /\* convert up to MEM4 *\/ */
|
|
/* ADC12MCTL9 |= EOS; */
|
|
|
|
/* ADC12CTL0 |= ADC12ON + REFON; */
|
|
/* ADC12CTL0 |= ENC; /\* enable conversion *\/ */
|
|
/* ADC12CTL0 |= ADC12SC; /\* sample & convert *\/ */
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
sky_sensors_deactivate(uint8_t type)
|
|
{
|
|
adc_on &= ~type;
|
|
|
|
if(adc_on == 0) {
|
|
/* stop converting immediately, turn off reference voltage, etc. */
|
|
/* wait for conversion to stop */
|
|
|
|
/* ADC12CTL0 &= ~ENC; */
|
|
/* /\* need to remove CONSEQ_3 if not EOS is configured *\/ */
|
|
/* ADC12CTL1 &= ~CONSEQ_3; */
|
|
|
|
/* while(ADC12CTL1 & ADC12BUSY); */
|
|
|
|
/* ADC12CTL0 = 0; */
|
|
/* ADC12CTL1 = 0; */
|
|
|
|
/* P6DIR = 0x00; */
|
|
/* P6OUT = 0x00; */
|
|
/* P6SEL = 0x00; */
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|