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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

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mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

TARGET_LPC54114/TOOLCHAIN_GCC_ARM/fsl_fmeas.h@172:65be27845400, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 20:53:29 2019 +0000
Revision:
172:65be27845400
Parent:
171:3a7713b1edbc 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Kojto 148:fd96258d940d 1 /*
Kojto 148:fd96258d940d 2 * Copyright (c) 2016, Freescale Semiconductor, Inc.
Kojto 148:fd96258d940d 3 * All rights reserved.
Kojto 148:fd96258d940d 4 *
Kojto 148:fd96258d940d 5 * Redistribution and use in source and binary forms, with or without modification,
Kojto 148:fd96258d940d 6 * are permitted provided that the following conditions are met:
Kojto 148:fd96258d940d 7 *
Kojto 148:fd96258d940d 8 * o Redistributions of source code must retain the above copyright notice, this list
Kojto 148:fd96258d940d 9 * of conditions and the following disclaimer.
Kojto 148:fd96258d940d 10 *
Kojto 148:fd96258d940d 11 * o Redistributions in binary form must reproduce the above copyright notice, this
Kojto 148:fd96258d940d 12 * list of conditions and the following disclaimer in the documentation and/or
Kojto 148:fd96258d940d 13 * other materials provided with the distribution.
Kojto 148:fd96258d940d 14 *
Kojto 148:fd96258d940d 15 * o Neither the name of Freescale Semiconductor, Inc. nor the names of its
Kojto 148:fd96258d940d 16 * contributors may be used to endorse or promote products derived from this
Kojto 148:fd96258d940d 17 * software without specific prior written permission.
Kojto 148:fd96258d940d 18 *
Kojto 148:fd96258d940d 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
Kojto 148:fd96258d940d 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
Kojto 148:fd96258d940d 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
Kojto 148:fd96258d940d 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
Kojto 148:fd96258d940d 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
Kojto 148:fd96258d940d 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
Kojto 148:fd96258d940d 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
Kojto 148:fd96258d940d 26 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Kojto 148:fd96258d940d 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
Kojto 148:fd96258d940d 28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Kojto 148:fd96258d940d 29 */
Kojto 148:fd96258d940d 30 #ifndef _FSL_FMEAS_H_
Kojto 148:fd96258d940d 31 #define _FSL_FMEAS_H_
Kojto 148:fd96258d940d 32
Kojto 148:fd96258d940d 33 #include "fsl_common.h"
Kojto 148:fd96258d940d 34
Kojto 148:fd96258d940d 35 /*!
Kojto 148:fd96258d940d 36 * @addtogroup fmeas
Kojto 148:fd96258d940d 37 * @{
Kojto 148:fd96258d940d 38 */
Kojto 148:fd96258d940d 39
Kojto 148:fd96258d940d 40 /*! @file */
Kojto 148:fd96258d940d 41
Kojto 148:fd96258d940d 42 /*******************************************************************************
Kojto 148:fd96258d940d 43 * Definitions
Kojto 148:fd96258d940d 44 *******************************************************************************/
Kojto 148:fd96258d940d 45
Kojto 148:fd96258d940d 46 /*! @name Driver version */
Kojto 148:fd96258d940d 47 /*@{*/
Kojto 148:fd96258d940d 48 /*! @brief Defines LPC Frequency Measure driver version 2.0.0.
Kojto 148:fd96258d940d 49 *
Kojto 148:fd96258d940d 50 * Change log:
Kojto 148:fd96258d940d 51 * - Version 2.0.0
Kojto 148:fd96258d940d 52 * - initial version
Kojto 148:fd96258d940d 53 */
Kojto 148:fd96258d940d 54 #define FSL_FMEAS_DRIVER_VERSION (MAKE_VERSION(2, 0, 0))
Kojto 148:fd96258d940d 55 /*@}*/
Kojto 148:fd96258d940d 56
Kojto 148:fd96258d940d 57 /*******************************************************************************
Kojto 148:fd96258d940d 58 * API
Kojto 148:fd96258d940d 59 *******************************************************************************/
Kojto 148:fd96258d940d 60
Kojto 148:fd96258d940d 61 #if defined(__cplusplus)
Kojto 148:fd96258d940d 62 extern "C" {
Kojto 148:fd96258d940d 63 #endif /* __cplusplus */
Kojto 148:fd96258d940d 64
Kojto 148:fd96258d940d 65 /*!
Kojto 148:fd96258d940d 66 * @name FMEAS Functional Operation
Kojto 148:fd96258d940d 67 * @{
Kojto 148:fd96258d940d 68 */
Kojto 148:fd96258d940d 69
Kojto 148:fd96258d940d 70 /*!
Kojto 148:fd96258d940d 71 * @brief Starts a frequency measurement cycle.
Kojto 148:fd96258d940d 72 *
Kojto 148:fd96258d940d 73 * @param base : SYSCON peripheral base address.
Kojto 148:fd96258d940d 74 */
Kojto 148:fd96258d940d 75 static inline void FMEAS_StartMeasure(SYSCON_Type *base)
Kojto 148:fd96258d940d 76 {
Kojto 148:fd96258d940d 77 base->FREQMECTRL = 0;
Kojto 148:fd96258d940d 78 base->FREQMECTRL = (1UL << 31);
Kojto 148:fd96258d940d 79 }
Kojto 148:fd96258d940d 80
Kojto 148:fd96258d940d 81 /*!
Kojto 148:fd96258d940d 82 * @brief Indicates when a frequency measurement cycle is complete.
Kojto 148:fd96258d940d 83 *
Kojto 148:fd96258d940d 84 * @param base : SYSCON peripheral base address.
Kojto 148:fd96258d940d 85 * @return true if a measurement cycle is active, otherwise false.
Kojto 148:fd96258d940d 86 */
Kojto 148:fd96258d940d 87 static inline bool FMEAS_IsMeasureComplete(SYSCON_Type *base)
Kojto 148:fd96258d940d 88 {
Kojto 148:fd96258d940d 89 return (bool)((base->FREQMECTRL & (1UL << 31)) == 0);
Kojto 148:fd96258d940d 90 }
Kojto 148:fd96258d940d 91
Kojto 148:fd96258d940d 92 /*!
Kojto 148:fd96258d940d 93 * @brief Returns the computed value for a frequency measurement cycle
Kojto 148:fd96258d940d 94 *
Kojto 148:fd96258d940d 95 * @param base : SYSCON peripheral base address.
Kojto 148:fd96258d940d 96 * @param refClockRate : Reference clock rate used during the frequency measurement cycle.
Kojto 148:fd96258d940d 97 *
Kojto 148:fd96258d940d 98 * @return Frequency in Hz.
Kojto 148:fd96258d940d 99 */
Kojto 148:fd96258d940d 100 uint32_t FMEAS_GetFrequency(SYSCON_Type *base, uint32_t refClockRate);
Kojto 148:fd96258d940d 101
Kojto 148:fd96258d940d 102 /*@}*/
Kojto 148:fd96258d940d 103
Kojto 148:fd96258d940d 104 #if defined(__cplusplus)
Kojto 148:fd96258d940d 105 }
Kojto 148:fd96258d940d 106 #endif /* __cplusplus */
Kojto 148:fd96258d940d 107
Kojto 148:fd96258d940d 108 /*! @}*/
Kojto 148:fd96258d940d 109
Kojto 148:fd96258d940d 110 #endif /* _FSL_FMEAS_H_ */