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120 lines
4.0 KiB
C
120 lines
4.0 KiB
C
8 years ago
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/**********************************************************************
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* $Id$ lpc17xx_systick.h 2010-05-21
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*//**
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* @file lpc17xx_systick.h
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* @brief Contains all macro definitions and function prototypes
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* support for SYSTICK firmware library on LPC17xx
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* @version 2.0
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* @date 21. May. 2010
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* @author NXP MCU SW Application Team
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*
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* Copyright(C) 2010, NXP Semiconductor
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* All rights reserved.
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*
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***********************************************************************
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* products. This software is supplied "AS IS" without any warranties.
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* NXP Semiconductors assumes no responsibility or liability for the
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* use of the software, conveys no license or title under any patent,
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* copyright, or mask work right to the product. NXP Semiconductors
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* reserves the right to make changes in the software without
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* notification. NXP Semiconductors also make no representation or
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* warranty that such application will be suitable for the specified
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* use without further testing or modification.
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, under NXP Semiconductors'
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* relevant copyright in the software, without fee, provided that it
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* is used in conjunction with NXP Semiconductors microcontrollers. This
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* copyright, permission, and disclaimer notice must appear in all copies of
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* this code.
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**********************************************************************/
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/* Peripheral group ----------------------------------------------------------- */
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/** @defgroup SYSTICK SYSTICK (System Tick)
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* @ingroup LPC1700CMSIS_FwLib_Drivers
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* @{
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*/
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#ifndef LPC17XX_SYSTICK_H_
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#define LPC17XX_SYSTICK_H_
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/* Includes ------------------------------------------------------------------- */
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#include "LPC17xx.h"
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#include "lpc_types.h"
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* Private Macros ------------------------------------------------------------- */
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/** @defgroup SYSTICK_Private_Macros SYSTICK Private Macros
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* @{
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*/
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/*********************************************************************//**
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* Macro defines for System Timer Control and status (STCTRL) register
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**********************************************************************/
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#define ST_CTRL_ENABLE ((uint32_t)(1<<0))
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#define ST_CTRL_TICKINT ((uint32_t)(1<<1))
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#define ST_CTRL_CLKSOURCE ((uint32_t)(1<<2))
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#define ST_CTRL_COUNTFLAG ((uint32_t)(1<<16))
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/*********************************************************************//**
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* Macro defines for System Timer Reload value (STRELOAD) register
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**********************************************************************/
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#define ST_RELOAD_RELOAD(n) ((uint32_t)(n & 0x00FFFFFF))
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/*********************************************************************//**
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* Macro defines for System Timer Current value (STCURRENT) register
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**********************************************************************/
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#define ST_RELOAD_CURRENT(n) ((uint32_t)(n & 0x00FFFFFF))
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/*********************************************************************//**
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* Macro defines for System Timer Calibration value (STCALIB) register
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**********************************************************************/
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#define ST_CALIB_TENMS(n) ((uint32_t)(n & 0x00FFFFFF))
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#define ST_CALIB_SKEW ((uint32_t)(1<<30))
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#define ST_CALIB_NOREF ((uint32_t)(1<<31))
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#define CLKSOURCE_EXT ((uint32_t)(0))
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#define CLKSOURCE_CPU ((uint32_t)(1))
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/**
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* @}
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*/
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/* Public Functions ----------------------------------------------------------- */
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/** @defgroup SYSTICK_Public_Functions SYSTICK Public Functions
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* @{
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*/
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void SYSTICK_InternalInit(uint32_t time);
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void SYSTICK_ExternalInit(uint32_t freq, uint32_t time);
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void SYSTICK_Cmd(FunctionalState NewState);
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void SYSTICK_IntCmd(FunctionalState NewState);
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uint32_t SYSTICK_GetCurrentValue(void);
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void SYSTICK_ClearCounterFlag(void);
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/**
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* @}
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* LPC17XX_SYSTICK_H_ */
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/**
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* @}
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*/
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/* --------------------------------- End Of File ------------------------------ */
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