300 lines
10 KiB
C
300 lines
10 KiB
C
/*
|
|
* Copyright (c) 2016, Freescale Semiconductor, Inc.
|
|
* Copyright 2016-2017 NXP
|
|
*
|
|
* 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 the copyright holder 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.
|
|
*/
|
|
#ifndef _FSL_WDOG_H_
|
|
#define _FSL_WDOG_H_
|
|
|
|
#include "fsl_common.h"
|
|
|
|
/*!
|
|
* @addtogroup wdog
|
|
* @{
|
|
*/
|
|
|
|
/*******************************************************************************
|
|
* Definitions
|
|
*******************************************************************************/
|
|
/*! @name Driver version */
|
|
/*@{*/
|
|
/*! @brief Defines WDOG driver version */
|
|
#define FSL_WDOG_DRIVER_VERSION (MAKE_VERSION(2, 0, 0))
|
|
/*@}*/
|
|
/*! @name Refresh sequence */
|
|
/*@{*/
|
|
#define WDOG_REFRESH_KEY (0xAAAA5555U)
|
|
/*@}*/
|
|
|
|
/*! @brief Defines WDOG work mode. */
|
|
typedef struct _wdog_work_mode
|
|
{
|
|
bool enableWait; /*!< continue or suspend WDOG in wait mode */
|
|
bool enableStop; /*!< continue or suspend WDOG in stop mode */
|
|
bool enableDebug; /*!< continue or suspend WDOG in debug mode */
|
|
} wdog_work_mode_t;
|
|
|
|
/*! @brief Describes WDOG configuration structure. */
|
|
typedef struct _wdog_config
|
|
{
|
|
bool enableWdog; /*!< Enables or disables WDOG */
|
|
wdog_work_mode_t workMode; /*!< Configures WDOG work mode in debug stop and wait mode */
|
|
bool enableInterrupt; /*!< Enables or disables WDOG interrupt */
|
|
uint16_t timeoutValue; /*!< Timeout value */
|
|
uint16_t interruptTimeValue; /*!< Interrupt count timeout value */
|
|
bool softwareResetExtension; /*!< software reset extension */
|
|
bool enablePowerDown; /*!< power down enable bit */
|
|
bool softwareAssertion; /*!< software assertion bit*/
|
|
bool softwareResetSignal; /*!< software reset signalbit*/
|
|
} wdog_config_t;
|
|
|
|
/*!
|
|
* @brief WDOG interrupt configuration structure, default settings all disabled.
|
|
*
|
|
* This structure contains the settings for all of the WDOG interrupt configurations.
|
|
*/
|
|
enum _wdog_interrupt_enable
|
|
{
|
|
kWDOG_InterruptEnable = WDOG_WICR_WIE_MASK /*!< WDOG timeout generates an interrupt before reset*/
|
|
};
|
|
|
|
/*!
|
|
* @brief WDOG status flags.
|
|
*
|
|
* This structure contains the WDOG status flags for use in the WDOG functions.
|
|
*/
|
|
enum _wdog_status_flags
|
|
{
|
|
kWDOG_RunningFlag = WDOG_WCR_WDE_MASK, /*!< Running flag, set when WDOG is enabled*/
|
|
kWDOG_PowerOnResetFlag = WDOG_WRSR_POR_MASK, /*!< Power On flag, set when reset is the result of a powerOnReset*/
|
|
kWDOG_TimeoutResetFlag = WDOG_WRSR_TOUT_MASK, /*!< Timeout flag, set when reset is the result of a timeout*/
|
|
kWDOG_SoftwareResetFlag = WDOG_WRSR_SFTW_MASK, /*!< Software flag, set when reset is the result of a software*/
|
|
kWDOG_InterruptFlag = WDOG_WICR_WTIS_MASK /*!< interrupt flag,whether interrupt has occurred or not*/
|
|
};
|
|
|
|
/*******************************************************************************
|
|
* API
|
|
*******************************************************************************/
|
|
|
|
#if defined(__cplusplus)
|
|
extern "C" {
|
|
#endif /* __cplusplus */
|
|
|
|
/*!
|
|
* @name WDOG Initialization and De-initialization.
|
|
* @{
|
|
*/
|
|
|
|
/*!
|
|
* @brief Initializes the WDOG configuration sturcture.
|
|
*
|
|
* This function initializes the WDOG configuration structure to default values. The default
|
|
* values are as follows.
|
|
* @code
|
|
* wdogConfig->enableWdog = true;
|
|
* wdogConfig->workMode.enableWait = true;
|
|
* wdogConfig->workMode.enableStop = false;
|
|
* wdogConfig->workMode.enableDebug = false;
|
|
* wdogConfig->enableInterrupt = false;
|
|
* wdogConfig->enablePowerdown = false;
|
|
* wdogConfig->resetExtension = flase;
|
|
* wdogConfig->timeoutValue = 0xFFU;
|
|
* wdogConfig->interruptTimeValue = 0x04u;
|
|
* @endcode
|
|
*
|
|
* @param config Pointer to the WDOG configuration structure.
|
|
* @see wdog_config_t
|
|
*/
|
|
void WDOG_GetDefaultConfig(wdog_config_t *config);
|
|
|
|
/*!
|
|
* @brief Initializes the WDOG.
|
|
*
|
|
* This function initializes the WDOG. When called, the WDOG runs according to the configuration.
|
|
*
|
|
* This is an example.
|
|
* @code
|
|
* wdog_config_t config;
|
|
* WDOG_GetDefaultConfig(&config);
|
|
* config.timeoutValue = 0xffU;
|
|
* config->interruptTimeValue = 0x04u;
|
|
* WDOG_Init(wdog_base,&config);
|
|
* @endcode
|
|
*
|
|
* @param base WDOG peripheral base address
|
|
* @param config The configuration of WDOG
|
|
*/
|
|
void WDOG_Init(WDOG_Type *base, const wdog_config_t *config);
|
|
|
|
/*!
|
|
* @brief Shuts down the WDOG.
|
|
*
|
|
* This function shuts down the WDOG.
|
|
* Watchdog Enable bit is a write one once only bit. It is not
|
|
* possible to clear this bit by a software write, once the bit is set.
|
|
* This bit(WDE) can be set/reset only in debug mode(exception).
|
|
*/
|
|
void WDOG_Deinit(WDOG_Type *base);
|
|
|
|
/*!
|
|
* @brief Enables the WDOG module.
|
|
*
|
|
* This function writes a value into the WDOG_WCR register to enable the WDOG.
|
|
* This is a write one once only bit. It is not possible to clear this bit by a software write,
|
|
* once the bit is set. only debug mode exception.
|
|
* @param base WDOG peripheral base address
|
|
*/
|
|
static inline void WDOG_Enable(WDOG_Type *base)
|
|
{
|
|
base->WCR |= WDOG_WCR_WDE_MASK;
|
|
}
|
|
|
|
/*!
|
|
* @brief Disables the WDOG module.
|
|
*
|
|
* This function writes a value into the WDOG_WCR register to disable the WDOG.
|
|
* This is a write one once only bit. It is not possible to clear this bit by a software write,once the bit is set.
|
|
* only debug mode exception
|
|
* @param base WDOG peripheral base address
|
|
*/
|
|
static inline void WDOG_Disable(WDOG_Type *base)
|
|
{
|
|
base->WCR &= ~WDOG_WCR_WDE_MASK;
|
|
}
|
|
|
|
/*!
|
|
* @brief Enables the WDOG interrupt.
|
|
*
|
|
*This bit is a write once only bit. Once the software does a write access to this bit, it will get
|
|
*locked and cannot be reprogrammed until the next system reset assertion
|
|
*
|
|
* @param base WDOG peripheral base address
|
|
* @param mask The interrupts to enable
|
|
* The parameter can be combination of the following source if defined.
|
|
* @arg kWDOG_InterruptEnable
|
|
*/
|
|
static inline void WDOG_EnableInterrupts(WDOG_Type *base, uint16_t mask)
|
|
{
|
|
base->WICR |= mask;
|
|
}
|
|
|
|
/*!
|
|
* @brief Gets the WDOG all reset status flags.
|
|
*
|
|
* This function gets all reset status flags.
|
|
*
|
|
* @code
|
|
* uint16_t status;
|
|
* status = WDOG_GetStatusFlags (wdog_base);
|
|
* @endcode
|
|
* @param base WDOG peripheral base address
|
|
* @return State of the status flag: asserted (true) or not-asserted (false).@see _wdog_status_flags
|
|
* - true: a related status flag has been set.
|
|
* - false: a related status flag is not set.
|
|
*/
|
|
uint16_t WDOG_GetStatusFlags(WDOG_Type *base);
|
|
|
|
/*!
|
|
* @brief Clears the WDOG flag.
|
|
*
|
|
* This function clears the WDOG status flag.
|
|
*
|
|
* This is an example for clearing the interrupt flag.
|
|
* @code
|
|
* WDOG_ClearStatusFlags(wdog_base,KWDOG_InterruptFlag);
|
|
* @endcode
|
|
* @param base WDOG peripheral base address
|
|
* @param mask The status flags to clear.
|
|
* The parameter could be any combination of the following values.
|
|
* kWDOG_TimeoutFlag
|
|
*/
|
|
void WDOG_ClearInterruptStatus(WDOG_Type *base, uint16_t mask);
|
|
|
|
/*!
|
|
* @brief Sets the WDOG timeout value.
|
|
*
|
|
* This function sets the timeout value.
|
|
* This function writes a value into WCR registers.
|
|
* The time-out value can be written at any point of time but it is loaded to the counter at the time
|
|
* when WDOG is enabled or after the service routine has been performed.
|
|
*
|
|
* @param base WDOG peripheral base address
|
|
* @param timeoutCount WDOG timeout value; count of WDOG clock tick.
|
|
*/
|
|
static inline void WDOG_SetTimeoutValue(WDOG_Type *base, uint16_t timeoutCount)
|
|
{
|
|
base->WCR = (base->WCR & ~WDOG_WCR_WT_MASK) | WDOG_WCR_WT(timeoutCount);
|
|
}
|
|
|
|
/*!
|
|
* @brief Sets the WDOG interrupt count timeout value.
|
|
*
|
|
* This function sets the interrupt count timeout value.
|
|
* This function writes a value into WIC registers which are wirte-once.
|
|
* This field is write once only. Once the software does a write access to this field, it will get locked
|
|
* and cannot be reprogrammed until the next system reset assertion.
|
|
* @param base WDOG peripheral base address
|
|
* @param timeoutCount WDOG timeout value; count of WDOG clock tick.
|
|
*/
|
|
static inline void WDOG_SetInterrputTimeoutValue(WDOG_Type *base, uint16_t timeoutCount)
|
|
{
|
|
base->WICR = (base->WICR & ~WDOG_WICR_WICT_MASK) | WDOG_WICR_WICT(timeoutCount);
|
|
}
|
|
|
|
/*!
|
|
* @brief Disable the WDOG power down enable bit.
|
|
*
|
|
* This function disable the WDOG power down enable(PDE).
|
|
* This function writes a value into WMCR registers which are wirte-once.
|
|
* This field is write once only. Once software sets this bit it cannot be reset until the next system reset.
|
|
* @param base WDOG peripheral base address
|
|
*/
|
|
static inline void WDOG_DisablePowerDownEnable(WDOG_Type *base)
|
|
{
|
|
base->WMCR &= ~WDOG_WMCR_PDE_MASK;
|
|
}
|
|
|
|
/*!
|
|
* @brief Refreshes the WDOG timer.
|
|
*
|
|
* This function feeds the WDOG.
|
|
* This function should be called before the WDOG timer is in timeout. Otherwise, a reset is asserted.
|
|
*
|
|
* @param base WDOG peripheral base address
|
|
*/
|
|
void WDOG_Refresh(WDOG_Type *base);
|
|
|
|
/*@}*/
|
|
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif /* __cplusplus */
|
|
|
|
/*! @}*/
|
|
|
|
#endif /* _FSL_WDOG_H_ */
|