| /* |
| * Copyright (c) 2016, Freescale Semiconductor, Inc. |
| * Copyright 2016-2017 NXP |
| * All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| #ifndef _FSL_FMEAS_H_ |
| #define _FSL_FMEAS_H_ |
| |
| #include "fsl_common.h" |
| |
| /*! |
| * @addtogroup fmeas |
| * @{ |
| */ |
| |
| /*! @file */ |
| |
| /******************************************************************************* |
| * Definitions |
| *******************************************************************************/ |
| |
| /*! @name Driver version */ |
| /*@{*/ |
| /*! @brief Defines LPC Frequency Measure driver version 2.0.0. |
| * |
| * Change log: |
| * - Version 2.0.0 |
| * - initial version |
| */ |
| #define FSL_FMEAS_DRIVER_VERSION (MAKE_VERSION(2, 0, 0)) |
| /*@}*/ |
| |
| /******************************************************************************* |
| * API |
| *******************************************************************************/ |
| |
| #if defined(__cplusplus) |
| extern "C" { |
| #endif /* __cplusplus */ |
| |
| /*! |
| * @name FMEAS Functional Operation |
| * @{ |
| */ |
| |
| /*! |
| * @brief Starts a frequency measurement cycle. |
| * |
| * @param base : SYSCON peripheral base address. |
| */ |
| static inline void FMEAS_StartMeasure(SYSCON_Type *base) |
| { |
| base->FREQMECTRL = 0; |
| base->FREQMECTRL = (1UL << 31); |
| } |
| |
| /*! |
| * @brief Indicates when a frequency measurement cycle is complete. |
| * |
| * @param base : SYSCON peripheral base address. |
| * @return true if a measurement cycle is active, otherwise false. |
| */ |
| static inline bool FMEAS_IsMeasureComplete(SYSCON_Type *base) |
| { |
| return (bool)((base->FREQMECTRL & (1UL << 31)) == 0); |
| } |
| |
| /*! |
| * @brief Returns the computed value for a frequency measurement cycle |
| * |
| * @param base : SYSCON peripheral base address. |
| * @param refClockRate : Reference clock rate used during the frequency measurement cycle. |
| * |
| * @return Frequency in Hz. |
| */ |
| uint32_t FMEAS_GetFrequency(SYSCON_Type *base, uint32_t refClockRate); |
| |
| /*@}*/ |
| |
| #if defined(__cplusplus) |
| } |
| #endif /* __cplusplus */ |
| |
| /*! @}*/ |
| |
| #endif /* _FSL_FMEAS_H_ */ |