The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.
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Diff: TARGET_LPC546XX/TOOLCHAIN_IAR/fsl_fmeas.h
- Revision:
- 171:3a7713b1edbc
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TARGET_LPC546XX/TOOLCHAIN_IAR/fsl_fmeas.h Thu Nov 08 11:45:42 2018 +0000 @@ -0,0 +1,114 @@ +/* + * The Clear BSD License + * Copyright (c) 2016, Freescale Semiconductor, Inc. + * Copyright 2016-2017 NXP + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted (subject to the limitations in the disclaimer below) provided + * that the following conditions are met: + * + * o Redistributions of source code must retain the above copyright notice, this list + * of conditions and the following disclaimer. + * + * o 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. + * + * o Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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. + */ +#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_ */