text: /*
    Copyright (c) 2014 Arduino.  All right reserved.
  
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.
  
    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    See the GNU Lesser General Public License for more details.
  
    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
  
  #ifndef _DELAY_
  #define _DELAY_
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  #include <stdint.h>
  #include "variant.h"
  
  /**
   * \brief Returns the number of milliseconds since the Arduino board began running the current program.
   *
   * This number will overflow (go back to zero), after approximately 50 days.
   *
   * \return Number of milliseconds since the program started (uint32_t)
   */
  extern uint32_t millis( void ) ;
  
  /**
   * \brief Returns the number of microseconds since the Arduino board began running the current program.
   *
   * This number will overflow (go back to zero), after approximately 70 minutes. On 16 MHz Arduino boards
   * (e.g. Duemilanove and Nano), this function has a resolution of four microseconds (i.e. the value returned is
   * always a multiple of four). On 8 MHz Arduino boards (e.g. the LilyPad), this function has a resolution
   * of eight microseconds.
   *
   * \note There are 1,000 microseconds in a millisecond and 1,000,000 microseconds in a second.
   */
  extern uint32_t micros( void ) ;
  
  /**
   * \brief Pauses the program for the amount of time (in miliseconds) specified as parameter.
   * (There are 1000 milliseconds in a second.)
   *
   * \param dwMs the number of milliseconds to pause (uint32_t)
   */
  extern void delay( uint32_t dwMs ) ;
  
  /**
   * \brief Pauses the program for the amount of time (in microseconds) specified as parameter.
   *
   * \param dwUs the number of microseconds to pause (uint32_t)
   */
  
  extern void delayMicroseconds(uint32_t usec);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* _DELAY_ */
  