halpxa27xwatchdog.nc

tinyos2.0版本驱动

/*
 * Copyright (c) 2005 Arch Rock Corporation 
 * All rights reserved. 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *	Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *	Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *  
 *   Neither the name of the Arch Rock Corporation nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE ARCHED
 * ROCK OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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 */
/**
 *
 *
 * @author Kaisen Lin
 * @author Phil Buonadonna
 */

interface HalPXA27xWatchdog {

  /** 
   * Enable the watchdog resource with the given timeout interval. 
   * This function may be called multiple times to reset the timeout
   * interval. However, the watchdog function itself is sticky and
   * will remain enabled until system reset.
   *
   * @param interval The timeout interval in untis of 3.25MHZ clock cycle
   * ticks.
   *
   */
  async command void enable(uint32_t interval);

  /**
   * Tickle/reset the watchdog counter. This function must be 
   * called on a regular basis to prevent the watchdog from resetting the
   * system.
   *
   */
  async command void tickle();
}