haltmp175readerp.nc

来自「tinyos-2.0源代码！转载而已！要的尽管拿！」· NC 代码 · 共 88 行

/*
 * Copyright (c) 2005-2006 Arch Rock Corporation
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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/**
 * HalTMP175ReaderP provides the service level HIL and device
 * specific Hal interfaces for the TI TMP175 Chip.
 *
 * Note that only the data path uses split phase resource arbitration
 * 
 * @author Phil Buonadonna <[e-mail]>
 * @version $Revision: 1.1.2.2 $ $Date: 2006/06/19 18:23:10 $
 */

generic module HplTMP175ReaderP()
{
  provides interface Read<uint16_t> as Temperature;

  uses interface HplTMP175;
  uses interface Resource as TMP175Resource;
}

implementation {

  enum {
    STATE_SET_MODE,
    STATE_SET_POLARITY,
    STATE_SET_FQ,
    STATE_SET_RES,
    STATE_NONE
  };

  uint8_t mState = STATE_NONE;
  uint8_t mConfigRegVal = 0;
  error_t mHplError;

  command error_t Temperature.read() {
    return call TMP175Resource.request();
  }

  event void TMP175Resource.granted() {
    error_t error;
    
    error = call HplTMP175.measureTemperature();
    if (error) {
      call TMP175Resource.release();
      signal Temperature.readDone(error,0);
    }
    return;
  }

  event void HplTMP175.measureTemperatureDone(error_t tmp175_error, uint16_t val) {
    call TMP175Resource.release();
    signal Temperature.readDone(tmp175_error,val);
    return;
  }

  default event void Temperature.readDone(error_t error, uint16_t val) {return ;}

}