serialid.nc

无线传感器网络中的节点定位算法。详见ReadMe文件。在TinyOS上实现的节点定位算法。

/*									tab:4
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/**
 *
 * Revision:	$Id: SerialId.nc,v 1.1 2004/09/28 19:36:38 dcm Exp $
 *
 */

module SerialId {
  provides interface StdControl;
  provides interface HardwareId;
}

implementation {
  bool gfReadBusy;
  uint8_t *serialId;

  command result_t StdControl.init() {
    gfReadBusy = FALSE;
    return SUCCESS;
  }

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

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

  task void serialIdRead() {
    if (cricket_get_id(serialId, NODE_NUM) == -1) {
        uint8_t cnt = 0;
        for(cnt = 0; cnt < HARDWARE_ID_LEN; cnt ++)
          serialId[cnt] = NODE_NUM;
    }

    signal HardwareId.readDone(serialId, SUCCESS);
  }

  command result_t HardwareId.read(uint8_t *id) {
    if (!gfReadBusy) {
      gfReadBusy = TRUE;
      serialId = id;
      post serialIdRead();
      return SUCCESS;
    }
    return FAIL;
  }
  
}