path: root/bsp/imxrt1052-evk/Libraries/drivers/fsl_snvs_hp.h

/*
 * The Clear BSD License
 * Copyright (c) 2016, Freescale Semiconductor, Inc.
 * Copyright (c) 2017, NXP
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted (subject to the limitations in the disclaimer below) 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.
 *
 * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE.
 * 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_SNVS_HP_H_
#define _FSL_SNVS_HP_H_

#include "fsl_common.h"

/*!
 * @addtogroup snvs_hp
 * @{
 */

/*******************************************************************************
 * Definitions
 ******************************************************************************/

/*! @name Driver version */
/*@{*/
#define FSL_SNVS_HP_DRIVER_VERSION (MAKE_VERSION(2, 0, 0)) /*!< Version 2.0.0 */
/*@}*/

/*! @brief List of SNVS interrupts */
typedef enum _snvs_hp_interrupts
{
    kSNVS_RTC_AlarmInterrupt = SNVS_HPCR_HPTA_EN_MASK,  /*!< RTC time alarm */
    kSNVS_RTC_PeriodicInterrupt = SNVS_HPCR_PI_EN_MASK, /*!< RTC periodic interrupt */
} snvs_hp_interrupts_t;

/*! @brief List of SNVS flags */
typedef enum _snvs_hp_status_flags
{
    kSNVS_RTC_AlarmInterruptFlag = SNVS_HPSR_HPTA_MASK,  /*!< RTC time alarm flag */
    kSNVS_RTC_PeriodicInterruptFlag = SNVS_HPSR_PI_MASK, /*!< RTC periodic interrupt flag */
} snvs_hp_status_flags_t;

/*! @brief Structure is used to hold the date and time */
typedef struct _snvs_hp_rtc_datetime
{
    uint16_t year;  /*!< Range from 1970 to 2099.*/
    uint8_t month;  /*!< Range from 1 to 12.*/
    uint8_t day;    /*!< Range from 1 to 31 (depending on month).*/
    uint8_t hour;   /*!< Range from 0 to 23.*/
    uint8_t minute; /*!< Range from 0 to 59.*/
    uint8_t second; /*!< Range from 0 to 59.*/
} snvs_hp_rtc_datetime_t;

/*!
 * @brief SNVS config structure
 *
 * This structure holds the configuration settings for the SNVS peripheral. To initialize this
 * structure to reasonable defaults, call the SNVS_GetDefaultConfig() function and pass a
 * pointer to your config structure instance.
 *
 * The config struct can be made const so it resides in flash
 */
typedef struct _snvs_hp_rtc_config
{
    bool rtcCalEnable;              /*!< true: RTC calibration mechanism is enabled;
                                         false:No calibration is used */
    uint32_t rtcCalValue;           /*!< Defines signed calibration value for nonsecure RTC;
                                         This is a 5-bit 2's complement value, range from -16 to +15 */
    uint32_t periodicInterruptFreq; /*!< Defines frequency of the periodic interrupt;
                                         Range from 0 to 15 */
} snvs_hp_rtc_config_t;

/*******************************************************************************
 * API
 ******************************************************************************/

#if defined(__cplusplus)
extern "C" {
#endif

/*!
 * @name Initialization and deinitialization
 * @{
 */

/*!
 * @brief Ungates the SNVS clock and configures the peripheral for basic operation.
 *
 * @note This API should be called at the beginning of the application using the SNVS driver.
 *
 * @param base   SNVS peripheral base address
 * @param config Pointer to the user's SNVS configuration structure.
 */
void SNVS_HP_RTC_Init(SNVS_Type *base, const snvs_hp_rtc_config_t *config);

/*!
 * @brief Stops the RTC and SRTC timers.
 *
 * @param base SNVS peripheral base address
 */
void SNVS_HP_RTC_Deinit(SNVS_Type *base);

/*!
 * @brief Fills in the SNVS config struct with the default settings.
 *
 * The default values are as follows.
 * @code
 *    config->rtccalenable = false;
 *    config->rtccalvalue = 0U;
 *    config->PIFreq = 0U;
 * @endcode
 * @param config Pointer to the user's SNVS configuration structure.
 */
void SNVS_HP_RTC_GetDefaultConfig(snvs_hp_rtc_config_t *config);

/*! @}*/

/*!
 * @name Non secure RTC current Time & Alarm
 * @{
 */

/*!
 * @brief Sets the SNVS RTC date and time according to the given time structure.
 *
 * @param base     SNVS peripheral base address
 * @param datetime Pointer to the structure where the date and time details are stored.
 *
 * @return kStatus_Success: Success in setting the time and starting the SNVS RTC
 *         kStatus_InvalidArgument: Error because the datetime format is incorrect
 */
status_t SNVS_HP_RTC_SetDatetime(SNVS_Type *base, const snvs_hp_rtc_datetime_t *datetime);

/*!
 * @brief Gets the SNVS RTC time and stores it in the given time structure.
 *
 * @param base     SNVS peripheral base address
 * @param datetime Pointer to the structure where the date and time details are stored.
 */
void SNVS_HP_RTC_GetDatetime(SNVS_Type *base, snvs_hp_rtc_datetime_t *datetime);

/*!
 * @brief Sets the SNVS RTC alarm time.
 *
 * The function sets the RTC alarm. It also checks whether the specified alarm time
 * is greater than the present time. If not, the function does not set the alarm
 * and returns an error.
 *
 * @param base      SNVS peripheral base address
 * @param alarmTime Pointer to the structure where the alarm time is stored.
 *
 * @return kStatus_Success: success in setting the SNVS RTC alarm
 *         kStatus_InvalidArgument: Error because the alarm datetime format is incorrect
 *         kStatus_Fail: Error because the alarm time has already passed
 */
status_t SNVS_HP_RTC_SetAlarm(SNVS_Type *base, const snvs_hp_rtc_datetime_t *alarmTime);

/*!
 * @brief Returns the SNVS RTC alarm time.
 *
 * @param base     SNVS peripheral base address
 * @param datetime Pointer to the structure where the alarm date and time details are stored.
 */
void SNVS_HP_RTC_GetAlarm(SNVS_Type *base, snvs_hp_rtc_datetime_t *datetime);

#if (defined(FSL_FEATURE_SNVS_HAS_SRTC) && (FSL_FEATURE_SNVS_HAS_SRTC > 0))
/*!
 * @brief The function synchronizes RTC counter value with SRTC.
 *
 * @param base SNVS peripheral base address
 */
void SNVS_HP_RTC_TimeSynchronize(SNVS_Type *base);
#endif /* FSL_FEATURE_SNVS_HAS_SRTC */

/*! @}*/

/*!
 * @name Interrupt Interface
 * @{
 */

/*!
 * @brief Enables the selected SNVS interrupts.
 *
 * @param base SNVS peripheral base address
 * @param mask The interrupts to enable. This is a logical OR of members of the
 *             enumeration ::snvs_interrupt_enable_t
 */
static inline void SNVS_HP_RTC_EnableInterrupts(SNVS_Type *base, uint32_t mask)
{
    base->HPCR |= mask;
}

/*!
 * @brief Disables the selected SNVS interrupts.
 *
 * @param base SNVS peripheral base address
 * @param mask The interrupts to enable. This is a logical OR of members of the
 *             enumeration ::snvs_interrupt_enable_t
 */
static inline void SNVS_HP_RTC_DisableInterrupts(SNVS_Type *base, uint32_t mask)
{
    base->HPCR &= ~mask;
}

/*!
 * @brief Gets the enabled SNVS interrupts.
 *
 * @param base SNVS peripheral base address
 *
 * @return The enabled interrupts. This is the logical OR of members of the
 *         enumeration ::snvs_interrupt_enable_t
 */
uint32_t SNVS_HP_RTC_GetEnabledInterrupts(SNVS_Type *base);

/*! @}*/

/*!
 * @name Status Interface
 * @{
 */

/*!
 * @brief Gets the SNVS status flags.
 *
 * @param base SNVS peripheral base address
 *
 * @return The status flags. This is the logical OR of members of the
 *         enumeration ::snvs_status_flags_t
 */
uint32_t SNVS_HP_RTC_GetStatusFlags(SNVS_Type *base);

/*!
 * @brief  Clears the SNVS status flags.
 *
 * @param base SNVS peripheral base address
 * @param mask The status flags to clear. This is a logical OR of members of the
 *             enumeration ::snvs_status_flags_t
 */
static inline void SNVS_HP_RTC_ClearStatusFlags(SNVS_Type *base, uint32_t mask)
{
    base->HPSR |= mask;
}

/*! @}*/

/*!
 * @name Timer Start and Stop
 * @{
 */

/*!
 * @brief Starts the SNVS RTC time counter.
 *
 * @param base SNVS peripheral base address
 */
static inline void SNVS_HP_RTC_StartTimer(SNVS_Type *base)
{
    base->HPCR |= SNVS_HPCR_RTC_EN_MASK;
    while (!(base->HPCR & SNVS_HPCR_RTC_EN_MASK))
    {
    }
}

/*!
 * @brief Stops the SNVS RTC time counter.
 *
 * @param base SNVS peripheral base address
 */
static inline void SNVS_HP_RTC_StopTimer(SNVS_Type *base)
{
    base->HPCR &= ~SNVS_HPCR_RTC_EN_MASK;
    while (base->HPCR & SNVS_HPCR_RTC_EN_MASK)
    {
    }
}

#if defined(__cplusplus)
}
#endif

/*! @}*/

#endif /* _FSL_SNVS_HP_H_ */