halpxa27xgpiocapture.nc

tinyos2.0版本驱动

/*
 * Copyright (c) 2005 Arched Rock Corporation 
 * All rights reserved. 
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 *   Neither the name of the Arched Rock Corporation nor the names of its
 * contributors may be used to endorse or promote products derived from
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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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 */

/*
 * Variant of the GpioCapture interface that provides a capture
 * on 'BOTH'.
 *
 * @author Phil Buonadonna
 */

interface HalPXA27xGpioCapture {
  
  /** 
   * Enable an edge based timer capture event.
   *
   * @return Whether the timer capture has been enabled.
   */
  async command error_t captureRisingEdge();
  async command error_t captureFallingEdge();
  async command error_t captureBothEdge();

  /**
   * Fired when an edge interrupt occurs.
   *
   * @param val The value of the 32kHz timer.
   */
  async event void captured(uint16_t time);

  /**
   * Disable further captures.
   */ 
  async command void disable();

}