Add FreeRTOS-Plus directory.

FreeRTOS/Demo/Common/ethernet/FreeTCPIP/sys/clock.h

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+/** \addtogroup sys
+ * @{
+ */
+
+/**
+ * \defgroup clock Clock library
+ *
+ * The clock library is the interface between Contiki and the platform
+ * specific clock functionality. The clock library performs a single
+ * function: measuring time. Additionally, the clock library provides
+ * a macro, CLOCK_SECOND, which corresponds to one second of system
+ * time.
+ *
+ * \note The clock library need in many cases not be used
+ * directly. Rather, the \ref timer "timer library" or the \ref etimer
+ * "event timers" should be used.
+ *
+ * \sa \ref timer "Timer library"
+ * \sa \ref etimer "Event timers"
+ *
+ * @{
+ */
+
+/*
+ * Copyright (c) 2004, Swedish Institute of Computer Science.
+ * 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 the Contiki operating system.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: clock.h,v 1.11 2009/01/24 15:20:11 adamdunkels Exp $
+ */
+#ifndef __CLOCK_H__
+#define __CLOCK_H__
+
+#include "net/clock-arch.h"
+
+//_RB_#include "contiki-conf.h"
+#if 0	/* XXX problems with signedness and use in timer_expired(). #if:ed it out for now. */
+
+/**
+ * Check if a clock time value is less than another clock time value.
+ *
+ * This macro checks if a clock time value is less than another clock
+ * time value. This macro is needed to correctly handle wrap-around of
+ * clock time values.
+ *
+ */
+#define CLOCK_LT( a, b )	( (clock_time_t) ((a) - (b)) < ((clock_time_t) (~((clock_time_t) 0)) >> 1) )
+#endif /* 0 */
+
+/**
+ * Initialize the clock library.
+ *
+ * This function initializes the clock library and should be called
+ * from the main() function of the system.
+ *
+ */
+void				clock_init( void );
+
+/**
+ * Get the current clock time.
+ *
+ * This function returns the current system clock time.
+ *
+ * \return The current clock time, measured in system ticks.
+ */
+CCIF clock_time_t	clock_time( void );
+
+void				clock_delay( unsigned int );
+
+/**
+ * A second, measured in system clock time.
+ *
+ * \hideinitializer
+ */
+#ifdef CLOCK_CONF_SECOND
+#define CLOCK_SECOND	CLOCK_CONF_SECOND
+#else
+#define CLOCK_SECOND	( clock_time_t ) 32
+#endif
+int					clock_fine_max( void );
+unsigned short		clock_fine( void );
+
+CCIF unsigned long	clock_seconds( void );
+#endif /* __CLOCK_H__ */
+
+/** @} */
+
+/** @} */