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TARGET_LPC546XX/TOOLCHAIN_IAR/fsl_fmeas.h@171:3a7713b1edbc, 2018-11-08 (annotated)

Committer:
AnnaBridge
Date:
Thu Nov 08 11:45:42 2018 +0000
Revision:
171:3a7713b1edbc
mbed library. Release version 164

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 171:3a7713b1edbc 1 /*
AnnaBridge 171:3a7713b1edbc 2 * The Clear BSD License
AnnaBridge 171:3a7713b1edbc 3 * Copyright (c) 2016, Freescale Semiconductor, Inc.
AnnaBridge 171:3a7713b1edbc 4 * Copyright 2016-2017 NXP
AnnaBridge 171:3a7713b1edbc 5 * All rights reserved.
AnnaBridge 171:3a7713b1edbc 6 *
AnnaBridge 171:3a7713b1edbc 7 * Redistribution and use in source and binary forms, with or without modification,
AnnaBridge 171:3a7713b1edbc 8 * are permitted (subject to the limitations in the disclaimer below) provided
AnnaBridge 171:3a7713b1edbc 9 * that the following conditions are met:
AnnaBridge 171:3a7713b1edbc 10 *
AnnaBridge 171:3a7713b1edbc 11 * o Redistributions of source code must retain the above copyright notice, this list
AnnaBridge 171:3a7713b1edbc 12 * of conditions and the following disclaimer.
AnnaBridge 171:3a7713b1edbc 13 *
AnnaBridge 171:3a7713b1edbc 14 * o Redistributions in binary form must reproduce the above copyright notice, this
AnnaBridge 171:3a7713b1edbc 15 * list of conditions and the following disclaimer in the documentation and/or
AnnaBridge 171:3a7713b1edbc 16 * other materials provided with the distribution.
AnnaBridge 171:3a7713b1edbc 17 *
AnnaBridge 171:3a7713b1edbc 18 * o Neither the name of the copyright holder nor the names of its
AnnaBridge 171:3a7713b1edbc 19 * contributors may be used to endorse or promote products derived from this
AnnaBridge 171:3a7713b1edbc 20 * software without specific prior written permission.
AnnaBridge 171:3a7713b1edbc 21 *
AnnaBridge 171:3a7713b1edbc 22 * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
AnnaBridge 171:3a7713b1edbc 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
AnnaBridge 171:3a7713b1edbc 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
AnnaBridge 171:3a7713b1edbc 25 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 171:3a7713b1edbc 26 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
AnnaBridge 171:3a7713b1edbc 27 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
AnnaBridge 171:3a7713b1edbc 28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
AnnaBridge 171:3a7713b1edbc 29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
AnnaBridge 171:3a7713b1edbc 30 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
AnnaBridge 171:3a7713b1edbc 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
AnnaBridge 171:3a7713b1edbc 32 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 171:3a7713b1edbc 33 */
AnnaBridge 171:3a7713b1edbc 34 #ifndef _FSL_FMEAS_H_
AnnaBridge 171:3a7713b1edbc 35 #define _FSL_FMEAS_H_
AnnaBridge 171:3a7713b1edbc 36
AnnaBridge 171:3a7713b1edbc 37 #include "fsl_common.h"
AnnaBridge 171:3a7713b1edbc 38
AnnaBridge 171:3a7713b1edbc 39 /*!
AnnaBridge 171:3a7713b1edbc 40 * @addtogroup fmeas
AnnaBridge 171:3a7713b1edbc 41 * @{
AnnaBridge 171:3a7713b1edbc 42 */
AnnaBridge 171:3a7713b1edbc 43
AnnaBridge 171:3a7713b1edbc 44 /*! @file */
AnnaBridge 171:3a7713b1edbc 45
AnnaBridge 171:3a7713b1edbc 46 /*******************************************************************************
AnnaBridge 171:3a7713b1edbc 47 * Definitions
AnnaBridge 171:3a7713b1edbc 48 *******************************************************************************/
AnnaBridge 171:3a7713b1edbc 49
AnnaBridge 171:3a7713b1edbc 50 /*! @name Driver version */
AnnaBridge 171:3a7713b1edbc 51 /*@{*/
AnnaBridge 171:3a7713b1edbc 52 /*! @brief Defines LPC Frequency Measure driver version 2.0.0.
AnnaBridge 171:3a7713b1edbc 53 *
AnnaBridge 171:3a7713b1edbc 54 * Change log:
AnnaBridge 171:3a7713b1edbc 55 * - Version 2.0.0
AnnaBridge 171:3a7713b1edbc 56 * - initial version
AnnaBridge 171:3a7713b1edbc 57 */
AnnaBridge 171:3a7713b1edbc 58 #define FSL_FMEAS_DRIVER_VERSION (MAKE_VERSION(2, 0, 0))
AnnaBridge 171:3a7713b1edbc 59 /*@}*/
AnnaBridge 171:3a7713b1edbc 60
AnnaBridge 171:3a7713b1edbc 61 /*******************************************************************************
AnnaBridge 171:3a7713b1edbc 62 * API
AnnaBridge 171:3a7713b1edbc 63 *******************************************************************************/
AnnaBridge 171:3a7713b1edbc 64
AnnaBridge 171:3a7713b1edbc 65 #if defined(__cplusplus)
AnnaBridge 171:3a7713b1edbc 66 extern "C" {
AnnaBridge 171:3a7713b1edbc 67 #endif /* __cplusplus */
AnnaBridge 171:3a7713b1edbc 68
AnnaBridge 171:3a7713b1edbc 69 /*!
AnnaBridge 171:3a7713b1edbc 70 * @name FMEAS Functional Operation
AnnaBridge 171:3a7713b1edbc 71 * @{
AnnaBridge 171:3a7713b1edbc 72 */
AnnaBridge 171:3a7713b1edbc 73
AnnaBridge 171:3a7713b1edbc 74 /*!
AnnaBridge 171:3a7713b1edbc 75 * @brief Starts a frequency measurement cycle.
AnnaBridge 171:3a7713b1edbc 76 *
AnnaBridge 171:3a7713b1edbc 77 * @param base : SYSCON peripheral base address.
AnnaBridge 171:3a7713b1edbc 78 */
AnnaBridge 171:3a7713b1edbc 79 static inline void FMEAS_StartMeasure(SYSCON_Type *base)
AnnaBridge 171:3a7713b1edbc 80 {
AnnaBridge 171:3a7713b1edbc 81 base->FREQMECTRL = 0;
AnnaBridge 171:3a7713b1edbc 82 base->FREQMECTRL = (1UL << 31);
AnnaBridge 171:3a7713b1edbc 83 }
AnnaBridge 171:3a7713b1edbc 84
AnnaBridge 171:3a7713b1edbc 85 /*!
AnnaBridge 171:3a7713b1edbc 86 * @brief Indicates when a frequency measurement cycle is complete.
AnnaBridge 171:3a7713b1edbc 87 *
AnnaBridge 171:3a7713b1edbc 88 * @param base : SYSCON peripheral base address.
AnnaBridge 171:3a7713b1edbc 89 * @return true if a measurement cycle is active, otherwise false.
AnnaBridge 171:3a7713b1edbc 90 */
AnnaBridge 171:3a7713b1edbc 91 static inline bool FMEAS_IsMeasureComplete(SYSCON_Type *base)
AnnaBridge 171:3a7713b1edbc 92 {
AnnaBridge 171:3a7713b1edbc 93 return (bool)((base->FREQMECTRL & (1UL << 31)) == 0);
AnnaBridge 171:3a7713b1edbc 94 }
AnnaBridge 171:3a7713b1edbc 95
AnnaBridge 171:3a7713b1edbc 96 /*!
AnnaBridge 171:3a7713b1edbc 97 * @brief Returns the computed value for a frequency measurement cycle
AnnaBridge 171:3a7713b1edbc 98 *
AnnaBridge 171:3a7713b1edbc 99 * @param base : SYSCON peripheral base address.
AnnaBridge 171:3a7713b1edbc 100 * @param refClockRate : Reference clock rate used during the frequency measurement cycle.
AnnaBridge 171:3a7713b1edbc 101 *
AnnaBridge 171:3a7713b1edbc 102 * @return Frequency in Hz.
AnnaBridge 171:3a7713b1edbc 103 */
AnnaBridge 171:3a7713b1edbc 104 uint32_t FMEAS_GetFrequency(SYSCON_Type *base, uint32_t refClockRate);
AnnaBridge 171:3a7713b1edbc 105
AnnaBridge 171:3a7713b1edbc 106 /*@}*/
AnnaBridge 171:3a7713b1edbc 107
AnnaBridge 171:3a7713b1edbc 108 #if defined(__cplusplus)
AnnaBridge 171:3a7713b1edbc 109 }
AnnaBridge 171:3a7713b1edbc 110 #endif /* __cplusplus */
AnnaBridge 171:3a7713b1edbc 111
AnnaBridge 171:3a7713b1edbc 112 /*! @}*/
AnnaBridge 171:3a7713b1edbc 113
AnnaBridge 171:3a7713b1edbc 114 #endif /* _FSL_FMEAS_H_ */