103 lines
4.2 KiB
C
103 lines
4.2 KiB
C
/*
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* Copyright (c) 2015, Freescale Semiconductor, Inc.
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* Copyright 2016-2017 NXP
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* o Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* o Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* o Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "fsl_ewm.h"
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/*******************************************************************************
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* Code
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******************************************************************************/
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void EWM_Init(EWM_Type *base, const ewm_config_t *config)
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{
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assert(config);
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uint32_t value = 0U;
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#if !((defined(FSL_FEATURE_SOC_PCC_COUNT) && FSL_FEATURE_SOC_PCC_COUNT) && \
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(defined(FSL_FEATURE_PCC_SUPPORT_EWM_CLOCK_REMOVE) && FSL_FEATURE_PCC_SUPPORT_EWM_CLOCK_REMOVE))
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#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
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CLOCK_EnableClock(kCLOCK_Ewm0);
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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#endif
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value = EWM_CTRL_EWMEN(config->enableEwm) | EWM_CTRL_ASSIN(config->setInputAssertLogic) |
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EWM_CTRL_INEN(config->enableEwmInput) | EWM_CTRL_INTEN(config->enableInterrupt);
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#if defined(FSL_FEATURE_EWM_HAS_PRESCALER) && FSL_FEATURE_EWM_HAS_PRESCALER
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base->CLKPRESCALER = config->prescaler;
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#endif /* FSL_FEATURE_EWM_HAS_PRESCALER */
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#if defined(FSL_FEATURE_EWM_HAS_CLOCK_SELECT) && FSL_FEATURE_EWM_HAS_CLOCK_SELECT
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base->CLKCTRL = config->clockSource;
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#endif /* FSL_FEATURE_EWM_HAS_CLOCK_SELECT*/
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base->CMPL = config->compareLowValue;
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base->CMPH = config->compareHighValue;
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base->CTRL = value;
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}
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void EWM_Deinit(EWM_Type *base)
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{
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EWM_DisableInterrupts(base, kEWM_InterruptEnable);
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#if !((defined(FSL_FEATURE_SOC_PCC_COUNT) && FSL_FEATURE_SOC_PCC_COUNT) && \
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(defined(FSL_FEATURE_PCC_SUPPORT_EWM_CLOCK_REMOVE) && FSL_FEATURE_PCC_SUPPORT_EWM_CLOCK_REMOVE))
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#if !(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL)
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CLOCK_DisableClock(kCLOCK_Ewm0);
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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#endif /* FSL_FEATURE_PCC_SUPPORT_EWM_CLOCK_REMOVE */
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}
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void EWM_GetDefaultConfig(ewm_config_t *config)
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{
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assert(config);
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config->enableEwm = true;
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config->enableEwmInput = false;
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config->setInputAssertLogic = false;
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config->enableInterrupt = false;
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#if defined(FSL_FEATURE_EWM_HAS_CLOCK_SELECT) && FSL_FEATURE_EWM_HAS_CLOCK_SELECT
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config->clockSource = kEWM_LpoClockSource0;
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#endif /* FSL_FEATURE_EWM_HAS_CLOCK_SELECT*/
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#if defined(FSL_FEATURE_EWM_HAS_PRESCALER) && FSL_FEATURE_EWM_HAS_PRESCALER
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config->prescaler = 0U;
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#endif /* FSL_FEATURE_EWM_HAS_PRESCALER */
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config->compareLowValue = 0U;
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config->compareHighValue = 0xFEU;
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}
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void EWM_Refresh(EWM_Type *base)
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{
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uint32_t primaskValue = 0U;
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/* Disable the global interrupt to protect refresh sequence */
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primaskValue = DisableGlobalIRQ();
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base->SERV = (uint8_t)0xB4U;
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base->SERV = (uint8_t)0x2CU;
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EnableGlobalIRQ(primaskValue);
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}
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