434 lines
14 KiB
C
434 lines
14 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2015, 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 2.0.0. */
|
||
|
|
#define FSL_WDOG_DRIVER_VERSION (MAKE_VERSION(2, 0, 0))
|
||
|
|
/*@}*/
|
||
|
|
|
||
|
|
/*! @name Unlock sequence */
|
||
|
|
/*@{*/
|
||
|
|
#define WDOG_FIRST_WORD_OF_UNLOCK (0xC520U) /*!< First word of unlock sequence */
|
||
|
|
#define WDOG_SECOND_WORD_OF_UNLOCK (0xD928U) /*!< Second word of unlock sequence */
|
||
|
|
/*@}*/
|
||
|
|
|
||
|
|
/*! @name Refresh sequence */
|
||
|
|
/*@{*/
|
||
|
|
#define WDOG_FIRST_WORD_OF_REFRESH (0xA602U) /*!< First word of refresh sequence */
|
||
|
|
#define WDOG_SECOND_WORD_OF_REFRESH (0xB480U) /*!< Second word of refresh sequence */
|
||
|
|
/*@}*/
|
||
|
|
|
||
|
|
/*! @brief Describes WDOG clock source. */
|
||
|
|
typedef enum _wdog_clock_source
|
||
|
|
{
|
||
|
|
kWDOG_LpoClockSource = 0U, /*!< WDOG clock sourced from LPO*/
|
||
|
|
kWDOG_AlternateClockSource = 1U, /*!< WDOG clock sourced from alternate clock source*/
|
||
|
|
} wdog_clock_source_t;
|
||
|
|
|
||
|
|
/*! @brief Defines WDOG work mode. */
|
||
|
|
typedef struct _wdog_work_mode
|
||
|
|
{
|
||
|
|
#if defined(FSL_FEATURE_WDOG_HAS_WAITEN) && FSL_FEATURE_WDOG_HAS_WAITEN
|
||
|
|
bool enableWait; /*!< Enables or disables WDOG in wait mode */
|
||
|
|
#endif /* FSL_FEATURE_WDOG_HAS_WAITEN */
|
||
|
|
bool enableStop; /*!< Enables or disables WDOG in stop mode */
|
||
|
|
bool enableDebug; /*!< Enables or disables WDOG in debug mode */
|
||
|
|
} wdog_work_mode_t;
|
||
|
|
|
||
|
|
/*! @brief Describes the selection of the clock prescaler. */
|
||
|
|
typedef enum _wdog_clock_prescaler
|
||
|
|
{
|
||
|
|
kWDOG_ClockPrescalerDivide1 = 0x0U, /*!< Divided by 1 */
|
||
|
|
kWDOG_ClockPrescalerDivide2 = 0x1U, /*!< Divided by 2 */
|
||
|
|
kWDOG_ClockPrescalerDivide3 = 0x2U, /*!< Divided by 3 */
|
||
|
|
kWDOG_ClockPrescalerDivide4 = 0x3U, /*!< Divided by 4 */
|
||
|
|
kWDOG_ClockPrescalerDivide5 = 0x4U, /*!< Divided by 5 */
|
||
|
|
kWDOG_ClockPrescalerDivide6 = 0x5U, /*!< Divided by 6 */
|
||
|
|
kWDOG_ClockPrescalerDivide7 = 0x6U, /*!< Divided by 7 */
|
||
|
|
kWDOG_ClockPrescalerDivide8 = 0x7U, /*!< Divided by 8 */
|
||
|
|
} wdog_clock_prescaler_t;
|
||
|
|
|
||
|
|
/*! @brief Describes WDOG configuration structure. */
|
||
|
|
typedef struct _wdog_config
|
||
|
|
{
|
||
|
|
bool enableWdog; /*!< Enables or disables WDOG */
|
||
|
|
wdog_clock_source_t clockSource; /*!< Clock source select */
|
||
|
|
wdog_clock_prescaler_t prescaler; /*!< Clock prescaler value */
|
||
|
|
wdog_work_mode_t workMode; /*!< Configures WDOG work mode in debug stop and wait mode */
|
||
|
|
bool enableUpdate; /*!< Update write-once register enable */
|
||
|
|
bool enableInterrupt; /*!< Enables or disables WDOG interrupt */
|
||
|
|
bool enableWindowMode; /*!< Enables or disables WDOG window mode */
|
||
|
|
uint32_t windowValue; /*!< Window value */
|
||
|
|
uint32_t timeoutValue; /*!< Timeout value */
|
||
|
|
} wdog_config_t;
|
||
|
|
|
||
|
|
/*! @brief Describes WDOG test mode. */
|
||
|
|
typedef enum _wdog_test_mode
|
||
|
|
{
|
||
|
|
kWDOG_QuickTest = 0U, /*!< Selects quick test */
|
||
|
|
kWDOG_ByteTest = 1U, /*!< Selects byte test */
|
||
|
|
} wdog_test_mode_t;
|
||
|
|
|
||
|
|
/*! @brief Describes WDOG tested byte selection in byte test mode. */
|
||
|
|
typedef enum _wdog_tested_byte
|
||
|
|
{
|
||
|
|
kWDOG_TestByte0 = 0U, /*!< Byte 0 selected in byte test mode */
|
||
|
|
kWDOG_TestByte1 = 1U, /*!< Byte 1 selected in byte test mode */
|
||
|
|
kWDOG_TestByte2 = 2U, /*!< Byte 2 selected in byte test mode */
|
||
|
|
kWDOG_TestByte3 = 3U, /*!< Byte 3 selected in byte test mode */
|
||
|
|
} wdog_tested_byte_t;
|
||
|
|
|
||
|
|
/*! @brief Describes WDOG test mode configuration structure. */
|
||
|
|
typedef struct _wdog_test_config
|
||
|
|
{
|
||
|
|
wdog_test_mode_t testMode; /*!< Selects test mode */
|
||
|
|
wdog_tested_byte_t testedByte; /*!< Selects tested byte in byte test mode */
|
||
|
|
uint32_t timeoutValue; /*!< Timeout value */
|
||
|
|
} wdog_test_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_t
|
||
|
|
{
|
||
|
|
kWDOG_InterruptEnable = WDOG_STCTRLH_IRQRSTEN_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_t
|
||
|
|
{
|
||
|
|
kWDOG_RunningFlag = WDOG_STCTRLH_WDOGEN_MASK, /*!< Running flag, set when WDOG is enabled*/
|
||
|
|
kWDOG_TimeoutFlag = WDOG_STCTRLL_INTFLG_MASK, /*!< Interrupt flag, set when an exception occurs*/
|
||
|
|
};
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
* 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->clockSource = kWDOG_LpoClockSource;
|
||
|
|
* wdogConfig->prescaler = kWDOG_ClockPrescalerDivide1;
|
||
|
|
* wdogConfig->workMode.enableWait = true;
|
||
|
|
* wdogConfig->workMode.enableStop = false;
|
||
|
|
* wdogConfig->workMode.enableDebug = false;
|
||
|
|
* wdogConfig->enableUpdate = true;
|
||
|
|
* wdogConfig->enableInterrupt = false;
|
||
|
|
* wdogConfig->enableWindowMode = false;
|
||
|
|
* wdogConfig->windowValue = 0;
|
||
|
|
* wdogConfig->timeoutValue = 0xFFFFU;
|
||
|
|
* @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.
|
||
|
|
* To reconfigure WDOG without forcing a reset first, enableUpdate must be set to true
|
||
|
|
* in the configuration.
|
||
|
|
*
|
||
|
|
* This is an example.
|
||
|
|
* @code
|
||
|
|
* wdog_config_t config;
|
||
|
|
* WDOG_GetDefaultConfig(&config);
|
||
|
|
* config.timeoutValue = 0x7ffU;
|
||
|
|
* config.enableUpdate = true;
|
||
|
|
* 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.
|
||
|
|
* Ensure that the WDOG_STCTRLH.ALLOWUPDATE is 1 which indicates that the register update is enabled.
|
||
|
|
*/
|
||
|
|
void WDOG_Deinit(WDOG_Type *base);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Configures the WDOG functional test.
|
||
|
|
*
|
||
|
|
* This function is used to configure the WDOG functional test. When called, the WDOG goes into test mode
|
||
|
|
* and runs according to the configuration.
|
||
|
|
* Ensure that the WDOG_STCTRLH.ALLOWUPDATE is 1 which means that the register update is enabled.
|
||
|
|
*
|
||
|
|
* This is an example.
|
||
|
|
* @code
|
||
|
|
* wdog_test_config_t test_config;
|
||
|
|
* test_config.testMode = kWDOG_QuickTest;
|
||
|
|
* test_config.timeoutValue = 0xfffffu;
|
||
|
|
* WDOG_SetTestModeConfig(wdog_base, &test_config);
|
||
|
|
* @endcode
|
||
|
|
* @param base WDOG peripheral base address
|
||
|
|
* @param config The functional test configuration of WDOG
|
||
|
|
*/
|
||
|
|
void WDOG_SetTestModeConfig(WDOG_Type *base, wdog_test_config_t *config);
|
||
|
|
|
||
|
|
/* @} */
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @name WDOG Functional Operation
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Enables the WDOG module.
|
||
|
|
*
|
||
|
|
* This function write value into WDOG_STCTRLH register to enable the WDOG, it is a write-once register,
|
||
|
|
* make sure that the WCT window is still open and this register has not been written in this WCT
|
||
|
|
* while this function is called.
|
||
|
|
*
|
||
|
|
* @param base WDOG peripheral base address
|
||
|
|
*/
|
||
|
|
static inline void WDOG_Enable(WDOG_Type *base)
|
||
|
|
{
|
||
|
|
base->STCTRLH |= WDOG_STCTRLH_WDOGEN_MASK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Disables the WDOG module.
|
||
|
|
*
|
||
|
|
* This function writes a value into the WDOG_STCTRLH register to disable the WDOG. It is a write-once register.
|
||
|
|
* Ensure that the WCT window is still open and that register has not been written to in this WCT
|
||
|
|
* while the function is called.
|
||
|
|
*
|
||
|
|
* @param base WDOG peripheral base address
|
||
|
|
*/
|
||
|
|
static inline void WDOG_Disable(WDOG_Type *base)
|
||
|
|
{
|
||
|
|
base->STCTRLH &= ~WDOG_STCTRLH_WDOGEN_MASK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Enables the WDOG interrupt.
|
||
|
|
*
|
||
|
|
* This function writes a value into the WDOG_STCTRLH register to enable the WDOG interrupt. It is a write-once register.
|
||
|
|
* Ensure that the WCT window is still open and the register has not been written to in this WCT
|
||
|
|
* while the function is called.
|
||
|
|
*
|
||
|
|
* @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, uint32_t mask)
|
||
|
|
{
|
||
|
|
base->STCTRLH |= mask;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Disables the WDOG interrupt.
|
||
|
|
*
|
||
|
|
* This function writes a value into the WDOG_STCTRLH register to disable the WDOG interrupt. It is a write-once register.
|
||
|
|
* Ensure that the WCT window is still open and the register has not been written to in this WCT
|
||
|
|
* while the function is called.
|
||
|
|
*
|
||
|
|
* @param base WDOG peripheral base address
|
||
|
|
* @param mask The interrupts to disable
|
||
|
|
* The parameter can be combination of the following source if defined.
|
||
|
|
* @arg kWDOG_InterruptEnable
|
||
|
|
*/
|
||
|
|
static inline void WDOG_DisableInterrupts(WDOG_Type *base, uint32_t mask)
|
||
|
|
{
|
||
|
|
base->STCTRLH &= ~mask;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Gets the WDOG all status flags.
|
||
|
|
*
|
||
|
|
* This function gets all status flags.
|
||
|
|
*
|
||
|
|
* This is an example for getting the Running Flag.
|
||
|
|
* @code
|
||
|
|
* uint32_t status;
|
||
|
|
* status = WDOG_GetStatusFlags (wdog_base) & kWDOG_RunningFlag;
|
||
|
|
* @endcode
|
||
|
|
* @param base WDOG peripheral base address
|
||
|
|
* @return State of the status flag: asserted (true) or not-asserted (false).@see _wdog_status_flags_t
|
||
|
|
* - true: a related status flag has been set.
|
||
|
|
* - false: a related status flag is not set.
|
||
|
|
*/
|
||
|
|
uint32_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 timeout (interrupt) flag.
|
||
|
|
* @code
|
||
|
|
* WDOG_ClearStatusFlags(wdog_base,kWDOG_TimeoutFlag);
|
||
|
|
* @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_ClearStatusFlags(WDOG_Type *base, uint32_t mask);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Sets the WDOG timeout value.
|
||
|
|
*
|
||
|
|
* This function sets the timeout value.
|
||
|
|
* It should be ensured that the time-out value for the WDOG is always greater than
|
||
|
|
* 2xWCT time + 20 bus clock cycles.
|
||
|
|
* This function writes a value into WDOG_TOVALH and WDOG_TOVALL registers which are wirte-once.
|
||
|
|
* Ensure the WCT window is still open and the two registers have not been written to in this WCT
|
||
|
|
* while the function is called.
|
||
|
|
*
|
||
|
|
* @param base WDOG peripheral base address
|
||
|
|
* @param timeoutCount WDOG timeout value; count of WDOG clock tick.
|
||
|
|
*/
|
||
|
|
static inline void WDOG_SetTimeoutValue(WDOG_Type *base, uint32_t timeoutCount)
|
||
|
|
{
|
||
|
|
base->TOVALH = (uint16_t)((timeoutCount >> 16U) & 0xFFFFU);
|
||
|
|
base->TOVALL = (uint16_t)((timeoutCount)&0xFFFFU);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Sets the WDOG window value.
|
||
|
|
*
|
||
|
|
* This function sets the WDOG window value.
|
||
|
|
* This function writes a value into WDOG_WINH and WDOG_WINL registers which are wirte-once.
|
||
|
|
* Ensure the WCT window is still open and the two registers have not been written to in this WCT
|
||
|
|
* while the function is called.
|
||
|
|
*
|
||
|
|
* @param base WDOG peripheral base address
|
||
|
|
* @param windowValue WDOG window value.
|
||
|
|
*/
|
||
|
|
static inline void WDOG_SetWindowValue(WDOG_Type *base, uint32_t windowValue)
|
||
|
|
{
|
||
|
|
base->WINH = (uint16_t)((windowValue >> 16U) & 0xFFFFU);
|
||
|
|
base->WINL = (uint16_t)((windowValue)&0xFFFFU);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Unlocks the WDOG register written.
|
||
|
|
*
|
||
|
|
* This function unlocks the WDOG register written.
|
||
|
|
* Before starting the unlock sequence and following congfiguration, disable the global interrupts.
|
||
|
|
* Otherwise, an interrupt may invalidate the unlocking sequence and the WCT may expire.
|
||
|
|
* After the configuration finishes, re-enable the global interrupts.
|
||
|
|
*
|
||
|
|
* @param base WDOG peripheral base address
|
||
|
|
*/
|
||
|
|
static inline void WDOG_Unlock(WDOG_Type *base)
|
||
|
|
{
|
||
|
|
base->UNLOCK = WDOG_FIRST_WORD_OF_UNLOCK;
|
||
|
|
base->UNLOCK = WDOG_SECOND_WORD_OF_UNLOCK;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @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);
|
||
|
|
|
||
|
|
/*!
|
||
|
|
* @brief Gets the WDOG reset count.
|
||
|
|
*
|
||
|
|
* This function gets the WDOG reset count value.
|
||
|
|
*
|
||
|
|
* @param base WDOG peripheral base address
|
||
|
|
* @return WDOG reset count value.
|
||
|
|
*/
|
||
|
|
static inline uint16_t WDOG_GetResetCount(WDOG_Type *base)
|
||
|
|
{
|
||
|
|
return base->RSTCNT;
|
||
|
|
}
|
||
|
|
/*!
|
||
|
|
* @brief Clears the WDOG reset count.
|
||
|
|
*
|
||
|
|
* This function clears the WDOG reset count value.
|
||
|
|
*
|
||
|
|
* @param base WDOG peripheral base address
|
||
|
|
*/
|
||
|
|
static inline void WDOG_ClearResetCount(WDOG_Type *base)
|
||
|
|
{
|
||
|
|
base->RSTCNT |= UINT16_MAX;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*@}*/
|
||
|
|
|
||
|
|
#if defined(__cplusplus)
|
||
|
|
}
|
||
|
|
#endif /* __cplusplus */
|
||
|
|
|
||
|
|
/*! @}*/
|
||
|
|
|
||
|
|
#endif /* _FSL_WDOG_H_ */
|