hpltda5250data.nc

来自「tinyos-2.x.rar」· NC 代码 · 共 82 行

/*
 * Copyright (c) 2004, Technische Universitat Berlin
 * All rights reserved.
 *
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 * - Redistributions in binary form must reproduce the above copyright
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * - Revision -------------------------------------------------------------
 * $Revision: 1.4 $
 * $Date: 2006/12/12 18:23:13 $
 * ========================================================================
 */

 /**
 * Interface for sending and receiving bytes of data over the TDA5250 Radio.
 * This interface lets you receive and send bytes of data.
 * In conjunction to this the HplTda5250DataControl interface is used to 
 * switch between receiving and sending.
 *
 * @see HplTda5250DataControl
 * @author Kevin Klues ([e-mail])
 */
interface HplTda5250Data {

 /**
   * Transmit a byte of data over the radio.
   * Before you call this command you must switch 
   * the radio to Tx mode via the HplTda5250DataControl
   * interface.
   * @param data The data byte to be transmitted.
   * @return SUCCESS Byte successfully transmitted.
             FAIL    Byte could not be transmitted.
   */
  async command error_t tx(uint8_t data);

  /**
   * Signalled when the next byte can be made ready to transmit.
   * Receiving such an event does not guarantee that the previous
   * byte has already been transmitted, just that the next one can
   * now be handed over for transmission.
   */
  async event void txReady();

  /**
   * Command for querying whether any bytes are still waiting to be transmitted.
   *
   * @return TRUE if all bytes are trasnmitted
   *         FALSE otherwise.
   */
  //async command bool isTxDone();

  /**
   * Signaled when a byte of data has been received from the radio.
	 * Before you call this command you must switch 
	 * the radio to Rx mode via the HplTda5250DataControl
   * interface.
   * @param data The data byte received.
   */
  async event void rxDone(uint8_t data);
}