text: /*
   * Copyright (c) 2010, Mariano Alvira <mar@devl.org> and other contributors
   * to the MC1322x project (http://mc1322x.devl.org)
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. 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.
   * 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE OR 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 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   * This file is part of libmc1322x: see http://mc1322x.devl.org
   * for details.
   *
   *
   */
  
  #ifndef RTC_H
  #define RTC_H
  
  /* Init RTC (and calibrate, if using ring oscillator) */
  void rtc_init_osc(int use_32khz);
  
  #ifdef USE_32KHZ
  #define rtc_init() rtc_init_osc(USE_32KHZ)
  #else
  #define rtc_init() rtc_init_osc(0)
  #endif
  
  /* Calibrate the ring oscillator */
  void rtc_calibrate(void);
  
  /* Delay for the specified number of milliseconds by polling RTC */
  void rtc_delay_ms(uint32_t msec);
  
  /* Calibrated frequency of the RTC, in Hz */
  extern int rtc_freq;
  
  #endif
  