attrhumiditym.nc

来自「tinyos最新版」· NC 代码 · 共 160 行

// $Id: AttrHumidityM.nc,v 1.1 2004/05/14 18:04:34 jdprabhu Exp $

/*									tab:4
 * "Copyright (c) 2000-2003 The Regents of the University  of California.  
 * All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose, without fee, and without written agreement is
 * hereby granted, provided that the above copyright notice, the following
 * two paragraphs and the author appear in all copies of this software.
 * 
 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS."
 *
 * Copyright (c) 2002-2003 Intel Corporation
 * All rights reserved.
 *
 * This file is distributed under the terms in the attached INTEL-LICENSE     
 * file. If you do not find these files, copies can be found by writing to
 * Intel Research Berkeley, 2150 Shattuck Avenue, Suite 1300, Berkeley, CA, 
 * 94704.  Attention:  Intel License Inquiry.
 */

/* 
 * Authors:  Wei Hong
 *           Intel Research Berkeley Lab
 * Date:     3/25/2003
 *
 */
// component to expose Sensirion humidity sensor reading as an attribute


/**
 * @author Wei Hong
 * @author Intel Research Berkeley Lab
 */
module AttrHumidityM
{
	provides interface StdControl;
	uses 
	{
		interface AttrRegister as HumidityAttr;
		interface AttrRegister as TempAttr;
		interface ADConvert as Humidity;
		interface ADConvert as Temperature;
		interface StdControl as SensorControl;
	}
}
implementation
{
  char *humidity;
  char *temp;
  bool started;
  bool humidityStarting;
  bool tempStarting;

  command result_t StdControl.init() {
    started = FALSE;
    humidityStarting = FALSE;
    tempStarting = FALSE;
    if (call HumidityAttr.registerAttr("humid", UINT16, 2) != SUCCESS)
      return FAIL;
    if (call TempAttr.registerAttr("humtemp", UINT16, 2) != SUCCESS)
      return FAIL;
    return call SensorControl.init();
  }

  command result_t StdControl.start() {
    return SUCCESS;
  }


  command result_t StdControl.stop() {
    started = FALSE;
    return call SensorControl.stop();
  }

  task void startedt() {
    started = TRUE;
    if (humidityStarting)
      {
	humidityStarting = FALSE;
	call HumidityAttr.startAttrDone();
      }
    if (tempStarting)
      {
	tempStarting = FALSE;
	call TempAttr.startAttrDone();
      }
  }

  event result_t HumidityAttr.startAttr() {
    if (started)
      return call HumidityAttr.startAttrDone();
    humidityStarting = TRUE;
    if (tempStarting)
      return SUCCESS;
    post startedt();
    return call SensorControl.start();
  }

  event result_t HumidityAttr.getAttr(char *name, char *resultBuf, SchemaErrorNo *errorNo) {
    humidity = resultBuf;
    *(uint16_t*)humidity = 0xffff;
    *errorNo = SCHEMA_ERROR;
    if (call Humidity.getData() != SUCCESS)
      return FAIL;
    *errorNo = SCHEMA_RESULT_PENDING;
    return SUCCESS;
  }

  event result_t Humidity.dataReady(uint16_t data) {
    *(uint16_t*)humidity = data;
    call HumidityAttr.getAttrDone("humid", humidity, SCHEMA_RESULT_READY);
    return SUCCESS;
  }

  event result_t HumidityAttr.setAttr(char *name, char *attrVal) {
    return FAIL;
  }

  event result_t TempAttr.startAttr() {
    if (started)
      return call TempAttr.startAttrDone();
    tempStarting = TRUE;
    if (humidityStarting)
      return SUCCESS;
    post startedt();
    return call SensorControl.start();
  }

  event result_t TempAttr.getAttr(char *name, char *resultBuf, SchemaErrorNo *errorNo) {
    temp = resultBuf;
    *(uint16_t*)temp = 0xffff;
    *errorNo = SCHEMA_ERROR;
    if (call Temperature.getData() != SUCCESS)
      return FAIL;
    *errorNo = SCHEMA_RESULT_PENDING;
    return SUCCESS;
  }

  event result_t Temperature.dataReady(uint16_t data) {
    *(uint16_t*)temp = data;
    call TempAttr.getAttrDone("humtemp", temp, SCHEMA_RESULT_READY);
    return SUCCESS;
  }

  event result_t TempAttr.setAttr(char *name, char *attrVal) {
    return FAIL;
  }
}