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targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC546XX/drivers/fsl_mrt.c@175:af195413fb11, 2017-10-11 (annotated)

Committer:
AnnaBridge
Date:
Wed Oct 11 12:45:49 2017 +0100
Revision:
175:af195413fb11
Parent:
targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC54608/drivers/fsl_mrt.c@170:19eb464bc2be
Child:
182:a56a73fd2a6f
This updates the lib to the mbed lib v 153

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Kojto 170:19eb464bc2be 1 /*
Kojto 170:19eb464bc2be 2 * Copyright (c) 2016, Freescale Semiconductor, Inc.
Kojto 170:19eb464bc2be 3 * Copyright 2016-2017 NXP
Kojto 170:19eb464bc2be 4 *
Kojto 170:19eb464bc2be 5 * Redistribution and use in source and binary forms, with or without modification,
Kojto 170:19eb464bc2be 6 * are permitted provided that the following conditions are met:
Kojto 170:19eb464bc2be 7 *
Kojto 170:19eb464bc2be 8 * o Redistributions of source code must retain the above copyright notice, this list
Kojto 170:19eb464bc2be 9 * of conditions and the following disclaimer.
Kojto 170:19eb464bc2be 10 *
Kojto 170:19eb464bc2be 11 * o Redistributions in binary form must reproduce the above copyright notice, this
Kojto 170:19eb464bc2be 12 * list of conditions and the following disclaimer in the documentation and/or
Kojto 170:19eb464bc2be 13 * other materials provided with the distribution.
Kojto 170:19eb464bc2be 14 *
Kojto 170:19eb464bc2be 15 * o Neither the name of the copyright holder nor the names of its
Kojto 170:19eb464bc2be 16 * contributors may be used to endorse or promote products derived from this
Kojto 170:19eb464bc2be 17 * software without specific prior written permission.
Kojto 170:19eb464bc2be 18 *
Kojto 170:19eb464bc2be 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
Kojto 170:19eb464bc2be 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
Kojto 170:19eb464bc2be 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
Kojto 170:19eb464bc2be 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
Kojto 170:19eb464bc2be 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
Kojto 170:19eb464bc2be 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
Kojto 170:19eb464bc2be 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
Kojto 170:19eb464bc2be 26 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
Kojto 170:19eb464bc2be 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
Kojto 170:19eb464bc2be 28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Kojto 170:19eb464bc2be 29 */
Kojto 170:19eb464bc2be 30
Kojto 170:19eb464bc2be 31 #include "fsl_mrt.h"
Kojto 170:19eb464bc2be 32
Kojto 170:19eb464bc2be 33 /*******************************************************************************
Kojto 170:19eb464bc2be 34 * Prototypes
Kojto 170:19eb464bc2be 35 ******************************************************************************/
Kojto 170:19eb464bc2be 36 /*!
Kojto 170:19eb464bc2be 37 * @brief Gets the instance from the base address
Kojto 170:19eb464bc2be 38 *
Kojto 170:19eb464bc2be 39 * @param base Multi-Rate timer peripheral base address
Kojto 170:19eb464bc2be 40 *
Kojto 170:19eb464bc2be 41 * @return The MRT instance
Kojto 170:19eb464bc2be 42 */
Kojto 170:19eb464bc2be 43 static uint32_t MRT_GetInstance(MRT_Type *base);
Kojto 170:19eb464bc2be 44
Kojto 170:19eb464bc2be 45 /*******************************************************************************
Kojto 170:19eb464bc2be 46 * Variables
Kojto 170:19eb464bc2be 47 ******************************************************************************/
Kojto 170:19eb464bc2be 48 /*! @brief Pointers to MRT bases for each instance. */
Kojto 170:19eb464bc2be 49 static MRT_Type *const s_mrtBases[] = MRT_BASE_PTRS;
Kojto 170:19eb464bc2be 50
Kojto 170:19eb464bc2be 51 #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
Kojto 170:19eb464bc2be 52 /*! @brief Pointers to MRT clocks for each instance. */
Kojto 170:19eb464bc2be 53 static const clock_ip_name_t s_mrtClocks[] = MRT_CLOCKS;
Kojto 170:19eb464bc2be 54 #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
Kojto 170:19eb464bc2be 55
Kojto 170:19eb464bc2be 56 /*! @brief Pointers to MRT resets for each instance. */
Kojto 170:19eb464bc2be 57 static const reset_ip_name_t s_mrtResets[] = MRT_RSTS;
Kojto 170:19eb464bc2be 58
Kojto 170:19eb464bc2be 59 /*******************************************************************************
Kojto 170:19eb464bc2be 60 * Code
Kojto 170:19eb464bc2be 61 ******************************************************************************/
Kojto 170:19eb464bc2be 62 static uint32_t MRT_GetInstance(MRT_Type *base)
Kojto 170:19eb464bc2be 63 {
Kojto 170:19eb464bc2be 64 uint32_t instance;
Kojto 170:19eb464bc2be 65 uint32_t mrtArrayCount = (sizeof(s_mrtBases) / sizeof(s_mrtBases[0]));
Kojto 170:19eb464bc2be 66
Kojto 170:19eb464bc2be 67 /* Find the instance index from base address mappings. */
Kojto 170:19eb464bc2be 68 for (instance = 0; instance < mrtArrayCount; instance++)
Kojto 170:19eb464bc2be 69 {
Kojto 170:19eb464bc2be 70 if (s_mrtBases[instance] == base)
Kojto 170:19eb464bc2be 71 {
Kojto 170:19eb464bc2be 72 break;
Kojto 170:19eb464bc2be 73 }
Kojto 170:19eb464bc2be 74 }
Kojto 170:19eb464bc2be 75
Kojto 170:19eb464bc2be 76 assert(instance < mrtArrayCount);
Kojto 170:19eb464bc2be 77
Kojto 170:19eb464bc2be 78 return instance;
Kojto 170:19eb464bc2be 79 }
Kojto 170:19eb464bc2be 80
Kojto 170:19eb464bc2be 81 void MRT_Init(MRT_Type *base, const mrt_config_t *config)
Kojto 170:19eb464bc2be 82 {
Kojto 170:19eb464bc2be 83 assert(config);
Kojto 170:19eb464bc2be 84
Kojto 170:19eb464bc2be 85 #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
Kojto 170:19eb464bc2be 86 /* Ungate the MRT clock */
Kojto 170:19eb464bc2be 87 CLOCK_EnableClock(s_mrtClocks[MRT_GetInstance(base)]);
Kojto 170:19eb464bc2be 88 #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
Kojto 170:19eb464bc2be 89
Kojto 170:19eb464bc2be 90 /* Reset the module */
Kojto 170:19eb464bc2be 91 RESET_PeripheralReset(s_mrtResets[MRT_GetInstance(base)]);
Kojto 170:19eb464bc2be 92
Kojto 170:19eb464bc2be 93 /* Set timer operating mode */
Kojto 170:19eb464bc2be 94 base->MODCFG = MRT_MODCFG_MULTITASK(config->enableMultiTask);
Kojto 170:19eb464bc2be 95 }
Kojto 170:19eb464bc2be 96
Kojto 170:19eb464bc2be 97 void MRT_Deinit(MRT_Type *base)
Kojto 170:19eb464bc2be 98 {
Kojto 170:19eb464bc2be 99 /* Stop all the timers */
Kojto 170:19eb464bc2be 100 MRT_StopTimer(base, kMRT_Channel_0);
Kojto 170:19eb464bc2be 101 MRT_StopTimer(base, kMRT_Channel_1);
Kojto 170:19eb464bc2be 102 MRT_StopTimer(base, kMRT_Channel_2);
Kojto 170:19eb464bc2be 103 MRT_StopTimer(base, kMRT_Channel_3);
Kojto 170:19eb464bc2be 104
Kojto 170:19eb464bc2be 105 #if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
Kojto 170:19eb464bc2be 106 /* Gate the MRT clock*/
Kojto 170:19eb464bc2be 107 CLOCK_DisableClock(s_mrtClocks[MRT_GetInstance(base)]);
Kojto 170:19eb464bc2be 108 #endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
Kojto 170:19eb464bc2be 109 }
Kojto 170:19eb464bc2be 110
Kojto 170:19eb464bc2be 111 void MRT_UpdateTimerPeriod(MRT_Type *base, mrt_chnl_t channel, uint32_t count, bool immediateLoad)
Kojto 170:19eb464bc2be 112 {
Kojto 170:19eb464bc2be 113 uint32_t newValue = count;
Kojto 170:19eb464bc2be 114 if (((base->CHANNEL[channel].CTRL & MRT_CHANNEL_CTRL_MODE_MASK) == kMRT_OneShotMode) || (immediateLoad))
Kojto 170:19eb464bc2be 115 {
Kojto 170:19eb464bc2be 116 /* For one-shot interrupt mode, load the new value immediately even if user forgot to enable */
Kojto 170:19eb464bc2be 117 newValue |= MRT_CHANNEL_INTVAL_LOAD_MASK;
Kojto 170:19eb464bc2be 118 }
Kojto 170:19eb464bc2be 119
Kojto 170:19eb464bc2be 120 /* Update the timer interval value */
Kojto 170:19eb464bc2be 121 base->CHANNEL[channel].INTVAL = newValue;
Kojto 170:19eb464bc2be 122 }