93 lines
3.5 KiB
C
93 lines
3.5 KiB
C
/*
|
|
* Copyright (c) 2015, Freescale Semiconductor, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted 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 Freescale Semiconductor, Inc. nor the names of its
|
|
* contributors may be used to endorse or promote products derived from this
|
|
* software without specific prior written permission.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include "fsl_ewm.h"
|
|
|
|
/*******************************************************************************
|
|
* Code
|
|
******************************************************************************/
|
|
|
|
void EWM_Init(EWM_Type *base, const ewm_config_t *config)
|
|
{
|
|
assert(config);
|
|
|
|
uint32_t value = 0U;
|
|
|
|
CLOCK_EnableClock(kCLOCK_Ewm0);
|
|
value = EWM_CTRL_EWMEN(config->enableEwm) | EWM_CTRL_ASSIN(config->setInputAssertLogic) |
|
|
EWM_CTRL_INEN(config->enableEwmInput) | EWM_CTRL_INTEN(config->enableInterrupt);
|
|
#if defined(FSL_FEATURE_EWM_HAS_PRESCALER) && FSL_FEATURE_EWM_HAS_PRESCALER
|
|
base->CLKPRESCALER = config->prescaler;
|
|
#endif /* FSL_FEATURE_EWM_HAS_PRESCALER */
|
|
|
|
#if defined(FSL_FEATURE_EWM_HAS_CLOCK_SELECT) && FSL_FEATURE_EWM_HAS_CLOCK_SELECT
|
|
base->CLKCTRL = config->clockSource;
|
|
#endif /* FSL_FEATURE_EWM_HAS_CLOCK_SELECT*/
|
|
|
|
base->CMPL = config->compareLowValue;
|
|
base->CMPH = config->compareHighValue;
|
|
base->CTRL = value;
|
|
}
|
|
|
|
void EWM_Deinit(EWM_Type *base)
|
|
{
|
|
EWM_DisableInterrupts(base, kEWM_InterruptEnable);
|
|
CLOCK_DisableClock(kCLOCK_Ewm0);
|
|
}
|
|
|
|
void EWM_GetDefaultConfig(ewm_config_t *config)
|
|
{
|
|
assert(config);
|
|
|
|
config->enableEwm = true;
|
|
config->enableEwmInput = false;
|
|
config->setInputAssertLogic = false;
|
|
config->enableInterrupt = false;
|
|
#if defined(FSL_FEATURE_EWM_HAS_CLOCK_SELECT) && FSL_FEATURE_EWM_HAS_CLOCK_SELECT
|
|
config->clockSource = kEWM_LpoClockSource0;
|
|
#endif /* FSL_FEATURE_EWM_HAS_CLOCK_SELECT*/
|
|
#if defined(FSL_FEATURE_EWM_HAS_PRESCALER) && FSL_FEATURE_EWM_HAS_PRESCALER
|
|
config->prescaler = 0U;
|
|
#endif /* FSL_FEATURE_EWM_HAS_PRESCALER */
|
|
config->compareLowValue = 0U;
|
|
config->compareHighValue = 0xFEU;
|
|
}
|
|
|
|
void EWM_Refresh(EWM_Type *base)
|
|
{
|
|
uint32_t primaskValue = 0U;
|
|
|
|
/* Disable the global interrupt to protect refresh sequence */
|
|
primaskValue = DisableGlobalIRQ();
|
|
base->SERV = (uint8_t)0xB4U;
|
|
base->SERV = (uint8_t)0x2CU;
|
|
EnableGlobalIRQ(primaskValue);
|
|
}
|