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/*
* 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.
*/
#ifndef __WDOG_IMX_H__
#define __WDOG_IMX_H__
#include <stdint.h>
#include <stdbool.h>
#include <assert.h>
#include "device_imx.h"
/*!
* @addtogroup wdog_imx_driver
* @{
*/
/*******************************************************************************
* Definitions
******************************************************************************/
/*!
* @brief Structure to configure the running mode.
*/
typedef struct WdogModeConfig
{
bool wdw; /*!< true: suspend in low power wait, false: not suspend */
bool wdt; /*!< true: assert WDOG_B when timeout, false: not assert WDOG_B */
bool wdbg; /*!< true: suspend in debug mode, false: not suspend */
bool wdzst; /*!< true: suspend in doze and stop mode, false: not suspend */
} wdog_mode_config_t;
/*******************************************************************************
* API
******************************************************************************/
#if defined(__cplusplus)
extern "C" {
#endif
/*!
* @name WDOG State Control
* @{
*/
/*!
* @brief Configure WDOG funtions, call once only
*
* @param base WDOG base pointer.
* @param config WDOG mode configuration
*/
static inline void WDOG_Init(WDOG_Type *base, wdog_mode_config_t *config)
{
base->WCR |= config->wdw ? WDOG_WCR_WDW_MASK : 0 |
config->wdt ? WDOG_WCR_WDT_MASK : 0 |
config->wdbg ? WDOG_WCR_WDBG_MASK : 0 |
config->wdzst ? WDOG_WCR_WDZST_MASK : 0;
}
/*!
* @brief Enable WDOG with timeout, call once only
*
* @param base WDOG base pointer.
* @param timeout WDOG timeout ((n+1)/2 second)
*/
void WDOG_Enable(WDOG_Type *base, uint8_t timeout);
/*!
* @brief Assert WDOG software reset signal
*
* @param base WDOG base pointer.
* @param wda WDOG reset (true: assert WDOG_B, false: no impact on WDOG_B)
* @param srs System reset (true: assert system reset WDOG_RESET_B_DEB, false: no impact on system reset)
*/
void WDOG_Reset(WDOG_Type *base, bool wda, bool srs);
/*!
* @brief Refresh the WDOG to prevent timeout
*
* @param base WDOG base pointer.
*/
void WDOG_Refresh(WDOG_Type *base);
/*!
* @brief Disable WDOG power down counter
*
* @param base WDOG base pointer.
*/
static inline void WDOG_DisablePowerdown(WDOG_Type *base)
{
base->WMCR &= ~WDOG_WMCR_PDE_MASK;
}
/*@}*/
/*!
* @name WDOG Interrupt Control
* @{
*/
/*!
* @brief Enable WDOG interrupt
*
* @param base WDOG base pointer.
* @param time how long before the timeout must the interrupt occur (n/2 seconds).
*/
static inline void WDOG_EnableInt(WDOG_Type *base, uint8_t time)
{
base->WICR = WDOG_WICR_WIE_MASK | WDOG_WICR_WICT(time);
}
/*!
* @brief Check whether WDOG interrupt is pending
*
* @param base WDOG base pointer.
* @return WDOG interrupt status (true: pending, false: not pending)
*/
static inline bool WDOG_IsIntPending(WDOG_Type *base)
{
return (bool)(base->WICR & WDOG_WICR_WTIS_MASK);
}
/*!
* @brief Clear WDOG interrupt status
*
* @param base WDOG base pointer.
*/
static inline void WDOG_ClearStatusFlag(WDOG_Type *base)
{
base->WICR |= WDOG_WICR_WTIS_MASK;
}
/*@}*/
#if defined(__cplusplus)
}
#endif
/*! @}*/
#endif /* __WDOG_IMX_H__ */
/*******************************************************************************
* EOF
******************************************************************************/
|
