106 lines
4.0 KiB
C
106 lines
4.0 KiB
C
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/*
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* The Clear BSD License
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* Copyright (c) 2016, Freescale Semiconductor, Inc.
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* Copyright 2016-2017 NXP
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* All rights reserved.
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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 (subject to the limitations in the disclaimer below) provided
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* 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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* NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
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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_rtwdog.h"
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/* Component ID definition, used by tools. */
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#ifndef FSL_COMPONENT_ID
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#define FSL_COMPONENT_ID "platform.drivers.rtwdog"
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#endif
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/*******************************************************************************
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* Code
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******************************************************************************/
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void RTWDOG_ClearStatusFlags(RTWDOG_Type *base, uint32_t mask)
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{
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if (mask & kRTWDOG_InterruptFlag)
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{
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base->CS |= RTWDOG_CS_FLG_MASK;
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}
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}
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void RTWDOG_GetDefaultConfig(rtwdog_config_t *config)
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{
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assert(config);
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config->enableRtwdog = true;
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config->clockSource = kRTWDOG_ClockSource1;
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config->prescaler = kRTWDOG_ClockPrescalerDivide1;
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config->workMode.enableWait = true;
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config->workMode.enableStop = false;
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config->workMode.enableDebug = false;
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config->testMode = kRTWDOG_TestModeDisabled;
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config->enableUpdate = true;
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config->enableInterrupt = false;
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config->enableWindowMode = false;
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config->windowValue = 0U;
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config->timeoutValue = 0xFFFFU;
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}
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void RTWDOG_Init(RTWDOG_Type *base, const rtwdog_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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uint32_t primaskValue = 0U;
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value = RTWDOG_CS_EN(config->enableRtwdog) | RTWDOG_CS_CLK(config->clockSource) | RTWDOG_CS_INT(config->enableInterrupt) |
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RTWDOG_CS_WIN(config->enableWindowMode) | RTWDOG_CS_UPDATE(config->enableUpdate) |
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RTWDOG_CS_DBG(config->workMode.enableDebug) | RTWDOG_CS_STOP(config->workMode.enableStop) |
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RTWDOG_CS_WAIT(config->workMode.enableWait) | RTWDOG_CS_PRES(config->prescaler) | RTWDOG_CS_CMD32EN(true) |
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RTWDOG_CS_TST(config->testMode);
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/* Disable the global interrupts. Otherwise, an interrupt could effectively invalidate the unlock sequence
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* and the WCT may expire. After the configuration finishes, re-enable the global interrupts. */
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primaskValue = DisableGlobalIRQ();
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RTWDOG_Unlock(base);
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base->WIN = config->windowValue;
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base->TOVAL = config->timeoutValue;
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base->CS = value;
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EnableGlobalIRQ(primaskValue);
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}
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void RTWDOG_Deinit(RTWDOG_Type *base)
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{
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uint32_t primaskValue = 0U;
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/* Disable the global interrupts */
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primaskValue = DisableGlobalIRQ();
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RTWDOG_Unlock(base);
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RTWDOG_Disable(base);
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EnableGlobalIRQ(primaskValue);
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}
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