Diff: libs/LPC17xx/LPC17xxLib/src/lpc17xx_systick.c

Revision:

3:f151d08d335c

Parent:

2:1df0b61d3b5a

--- a/libs/LPC17xx/LPC17xxLib/src/lpc17xx_systick.c	Fri Feb 28 18:52:52 2014 -0800
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,190 +0,0 @@
-#ifdef __LPC17XX__
-
-/**********************************************************************
-* $Id$		lpc17xx_systick.c				2010-05-21
-*//**
-* @file		lpc17xx_systick.c
-* @brief	Contains all functions support for SYSTICK firmware library
-* 			on LPC17xx
-* @version	2.0
-* @date		21. May. 2010
-* @author	NXP MCU SW Application Team
-*
-* Copyright(C) 2010, NXP Semiconductor
-* All rights reserved.
-*
-***********************************************************************
-* Software that is described herein is for illustrative purposes only
-* which provides customers with programming information regarding the
-* products. This software is supplied "AS IS" without any warranties.
-* NXP Semiconductors assumes no responsibility or liability for the
-* use of the software, conveys no license or title under any patent,
-* copyright, or mask work right to the product. NXP Semiconductors
-* reserves the right to make changes in the software without
-* notification. NXP Semiconductors also make no representation or
-* warranty that such application will be suitable for the specified
-* use without further testing or modification.
-**********************************************************************/
-
-/* Peripheral group ----------------------------------------------------------- */
-/** @addtogroup SYSTICK
- * @{
- */
-
-/* Includes ------------------------------------------------------------------- */
-#include "lpc17xx_systick.h"
-#include "lpc17xx_clkpwr.h"
-
-/* If this source file built with example, the LPC17xx FW library configuration
- * file in each example directory ("lpc17xx_libcfg.h") must be included,
- * otherwise the default FW library configuration file must be included instead
- */
-#ifdef __BUILD_WITH_EXAMPLE__
-#include "lpc17xx_libcfg.h"
-#else
-#include "lpc17xx_libcfg_default.h"
-#endif /* __BUILD_WITH_EXAMPLE__ */
-
-
-#ifdef _SYSTICK
-
-/* Public Functions ----------------------------------------------------------- */
-/** @addtogroup SYSTICK_Public_Functions
- * @{
- */
-/*********************************************************************//**
- * @brief 		Initial System Tick with using internal CPU clock source
- * @param[in]	time	time interval(ms)
- * @return 		None
- **********************************************************************/
-void SYSTICK_InternalInit(uint32_t time)
-{
-	uint32_t cclk;
-	float maxtime;
-
-	cclk = SystemCoreClock;
-	/* With internal CPU clock frequency for LPC17xx is 'SystemCoreClock'
-	 * And limit 24 bit for RELOAD value
-	 * So the maximum time can be set:
-	 * 1/SystemCoreClock * (2^24) * 1000 (ms)
-	 */
-	//check time value is available or not
-	maxtime = (1<<24)/(SystemCoreClock / 1000) ;
-	if(time > maxtime)
-		//Error loop
-		while(1);
-	else
-	{
-		//Select CPU clock is System Tick clock source
-		SysTick->CTRL |= ST_CTRL_CLKSOURCE;
-		/* Set RELOAD value
-		 * RELOAD = (SystemCoreClock/1000) * time - 1
-		 * with time base is millisecond
-		 */
-		SysTick->LOAD = (cclk/1000)*time - 1;
-	}
-}
-
-/*********************************************************************//**
- * @brief 		Initial System Tick with using external clock source
- * @param[in]	freq	external clock frequency(Hz)
- * @param[in]	time	time interval(ms)
- * @return 		None
- **********************************************************************/
-void SYSTICK_ExternalInit(uint32_t freq, uint32_t time)
-{
-	float maxtime;
-
-	/* With external clock frequency for LPC17xx is 'freq'
-	 * And limit 24 bit for RELOAD value
-	 * So the maximum time can be set:
-	 * 1/freq * (2^24) * 1000 (ms)
-	 */
-	//check time value is available or not
-	maxtime = (1<<24)/(freq / 1000) ;
-	if (time>maxtime)
-		//Error Loop
-		while(1);
-	else
-	{
-		//Select external clock is System Tick clock source
-		SysTick->CTRL &= ~ ST_CTRL_CLKSOURCE;
-		/* Set RELOAD value
-		 * RELOAD = (freq/1000) * time - 1
-		 * with time base is millisecond
-		 */
-		maxtime = (freq/1000)*time - 1;
-		SysTick->LOAD = (freq/1000)*time - 1;
-	}
-}
-
-/*********************************************************************//**
- * @brief 		Enable/disable System Tick counter
- * @param[in]	NewState	System Tick counter status, should be:
- * 					- ENABLE
- * 					- DISABLE
- * @return 		None
- **********************************************************************/
-void SYSTICK_Cmd(FunctionalState NewState)
-{
-	CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState));
-
-	if(NewState == ENABLE)
-		//Enable System Tick counter
-		SysTick->CTRL |= ST_CTRL_ENABLE;
-	else
-		//Disable System Tick counter
-		SysTick->CTRL &= ~ST_CTRL_ENABLE;
-}
-
-/*********************************************************************//**
- * @brief 		Enable/disable System Tick interrupt
- * @param[in]	NewState	System Tick interrupt status, should be:
- * 					- ENABLE
- * 					- DISABLE
- * @return 		None
- **********************************************************************/
-void SYSTICK_IntCmd(FunctionalState NewState)
-{
-	CHECK_PARAM(PARAM_FUNCTIONALSTATE(NewState));
-
-	if(NewState == ENABLE)
-		//Enable System Tick counter
-		SysTick->CTRL |= ST_CTRL_TICKINT;
-	else
-		//Disable System Tick counter
-		SysTick->CTRL &= ~ST_CTRL_TICKINT;
-}
-
-/*********************************************************************//**
- * @brief 		Get current value of System Tick counter
- * @param[in]	None
- * @return 		current value of System Tick counter
- **********************************************************************/
-uint32_t SYSTICK_GetCurrentValue(void)
-{
-	return (SysTick->VAL);
-}
-
-/*********************************************************************//**
- * @brief 		Clear Counter flag
- * @param[in]	None
- * @return 		None
- **********************************************************************/
-void SYSTICK_ClearCounterFlag(void)
-{
-	SysTick->CTRL &= ~ST_CTRL_COUNTFLAG;
-}
-/**
- * @}
- */
-
-#endif /* _SYSTICK */
-
-/**
- * @}
- */
-
-/* --------------------------------- End Of File ------------------------------ */
-
-#endif /* __LPC17XX__ */