00001 /* ---------------------------------------------------------------------------- */ 00002 /* Atmel Microcontroller Software Support */ 00003 /* SAM Software Package License */ 00004 /* ---------------------------------------------------------------------------- */ 00005 /* Copyright (c) 2015, Atmel Corporation */ 00006 /* */ 00007 /* All rights reserved. */ 00008 /* */ 00009 /* Redistribution and use in source and binary forms, with or without */ 00010 /* modification, are permitted provided that the following condition is met: */ 00011 /* */ 00012 /* - Redistributions of source code must retain the above copyright notice, */ 00013 /* this list of conditions and the disclaimer below. */ 00014 /* */ 00015 /* Atmel's name may not be used to endorse or promote products derived from */ 00016 /* this software without specific prior written permission. */ 00017 /* */ 00018 /* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR */ 00019 /* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ 00020 /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE */ 00021 /* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, */ 00022 /* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */ 00023 /* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */ 00024 /* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */ 00025 /* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */ 00026 /* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */ 00027 /* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ 00028 /* ---------------------------------------------------------------------------- */ 00029 00030 /** 00031 * \file 00032 * 00033 * \par Purpose 00034 * 00035 * Methods and definitions for Global time tick and wait functions. 00036 * 00037 * Defines a common and simplest use of Time Tick, to increase tickCount 00038 * every 1ms, the application can get this value through GetTickCount(). 00039 * 00040 * \par Usage 00041 * 00042 * -# Configure the System Tick with TimeTick_Configure() when MCK changed 00043 * \note 00044 * Must be done before any invoke of GetTickCount(), Wait() or Sleep(). 00045 * -# Uses GetTickCount to get current tick value. 00046 * -# Uses Wait to wait several ms. 00047 * -# Uses Sleep to enter wait for interrupt mode to wait several ms. 00048 * 00049 */ 00050 00051 #ifndef _TIMETICK_ 00052 #define _TIMETICK_ 00053 00054 /*---------------------------------------------------------------------------- 00055 * Headers 00056 *----------------------------------------------------------------------------*/ 00057 00058 #include <stdint.h> 00059 00060 /*---------------------------------------------------------------------------- 00061 * Definitions 00062 *----------------------------------------------------------------------------*/ 00063 00064 typedef struct { 00065 volatile uint32_t *pTimer1; 00066 volatile uint32_t *pTimer2; 00067 volatile uint32_t *pTimer3; 00068 volatile uint32_t *pTimer4; 00069 } SyTickDelayCounter_t; 00070 00071 /*---------------------------------------------------------------------------- 00072 * Definitions 00073 *----------------------------------------------------------------------------*/ 00074 typedef struct _TimeEvent { 00075 uint32_t event; 00076 uint32_t time_tick; 00077 uint32_t time_start; 00078 uint32_t occur; 00079 struct _TimeEvent *pPreEvent; 00080 struct _TimeEvent *pNextEvent; 00081 } TimeEvent; 00082 00083 /*---------------------------------------------------------------------------- 00084 * Global functions 00085 *----------------------------------------------------------------------------*/ 00086 00087 uint32_t TimeTick_Configure(void); 00088 00089 void TimeTick_Increment(uint32_t dwInc); 00090 00091 uint32_t GetDelayInTicks(uint32_t startTick, uint32_t endTick); 00092 00093 uint32_t GetTicks(void); 00094 00095 void Wait(volatile uint32_t dwMs); 00096 00097 void Sleep(volatile uint32_t dwMs); 00098 00099 extern void SetTimeEvent(TimeEvent *pEvent); 00100 00101 #endif /* _TIMETICK_ */