533 lines
16 KiB
C
533 lines
16 KiB
C
/*
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* Copyright (c) 2017, Freescale Semiconductor, Inc.
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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 provided 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 Freescale Semiconductor, Inc. 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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* 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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* Copyright (c) 2017, NXP Semiconductors, Inc.
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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 provided 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 Freescale Semiconductor, Inc. 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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* 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_snvs_hp.h"
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/*******************************************************************************
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* Definitions
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******************************************************************************/
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#define SECONDS_IN_A_DAY (86400U)
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#define SECONDS_IN_A_HOUR (3600U)
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#define SECONDS_IN_A_MINUTE (60U)
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#define DAYS_IN_A_YEAR (365U)
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#define YEAR_RANGE_START (1970U)
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#define YEAR_RANGE_END (2099U)
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#if !(defined(SNVS_HPCOMR_SW_SV_MASK))
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#define SNVS_HPCOMR_SW_SV_MASK (0x100U)
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#endif
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#if !(defined(SNVS_HPSR_PI_MASK))
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#define SNVS_HPSR_PI_MASK (0x2U)
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#endif
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#if !(defined(SNVS_HPSR_HPTA_MASK))
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#define SNVS_HPSR_HPTA_MASK (0x1U)
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#endif
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/*******************************************************************************
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* Prototypes
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******************************************************************************/
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/*!
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* @brief Checks whether the date and time passed in is valid
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*
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* @param datetime Pointer to structure where the date and time details are stored
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*
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* @return Returns false if the date & time details are out of range; true if in range
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*/
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static bool SNVS_HP_CheckDatetimeFormat(const snvs_hp_rtc_datetime_t *datetime);
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/*!
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* @brief Converts time data from datetime to seconds
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*
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* @param datetime Pointer to datetime structure where the date and time details are stored
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*
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* @return The result of the conversion in seconds
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*/
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static uint32_t SNVS_HP_ConvertDatetimeToSeconds(const snvs_hp_rtc_datetime_t *datetime);
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/*!
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* @brief Converts time data from seconds to a datetime structure
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*
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* @param seconds Seconds value that needs to be converted to datetime format
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* @param datetime Pointer to the datetime structure where the result of the conversion is stored
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*/
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static void SNVS_HP_ConvertSecondsToDatetime(uint32_t seconds, snvs_hp_rtc_datetime_t *datetime);
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/*!
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* @brief Returns RTC time in seconds.
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*
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* This function is used internally to get actual RTC time in seconds.
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*
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* @param base SNVS peripheral base address
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*
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* @return RTC time in seconds
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*/
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static uint32_t SNVS_HP_RTC_GetSeconds(SNVS_Type *base);
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#if (!(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && \
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defined(SNVS_HP_CLOCKS))
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/*!
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* @brief Get the SNVS instance from peripheral base address.
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*
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* @param base SNVS peripheral base address.
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*
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* @return SNVS instance.
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*/
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static uint32_t SNVS_HP_GetInstance(SNVS_Type *base);
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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/*******************************************************************************
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* Variables
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******************************************************************************/
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#if (!(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && \
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defined(SNVS_HP_CLOCKS))
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/*! @brief Pointer to snvs_hp clock. */
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const clock_ip_name_t s_snvsHpClock[] = SNVS_HP_CLOCKS;
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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/*******************************************************************************
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* Code
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******************************************************************************/
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static bool SNVS_HP_CheckDatetimeFormat(const snvs_hp_rtc_datetime_t *datetime)
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{
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assert(datetime);
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/* Table of days in a month for a non leap year. First entry in the table is not used,
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* valid months start from 1
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*/
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uint8_t daysPerMonth[] = {0U, 31U, 28U, 31U, 30U, 31U, 30U, 31U, 31U, 30U, 31U, 30U, 31U};
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/* Check year, month, hour, minute, seconds */
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if ((datetime->year < YEAR_RANGE_START) || (datetime->year > YEAR_RANGE_END) || (datetime->month > 12U) ||
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(datetime->month < 1U) || (datetime->hour >= 24U) || (datetime->minute >= 60U) || (datetime->second >= 60U))
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{
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/* If not correct then error*/
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return false;
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}
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/* Adjust the days in February for a leap year */
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if ((((datetime->year & 3U) == 0) && (datetime->year % 100 != 0)) || (datetime->year % 400 == 0))
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{
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daysPerMonth[2] = 29U;
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}
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/* Check the validity of the day */
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if ((datetime->day > daysPerMonth[datetime->month]) || (datetime->day < 1U))
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{
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return false;
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}
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return true;
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}
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static uint32_t SNVS_HP_ConvertDatetimeToSeconds(const snvs_hp_rtc_datetime_t *datetime)
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{
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assert(datetime);
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/* Number of days from begin of the non Leap-year*/
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/* Number of days from begin of the non Leap-year*/
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uint16_t monthDays[] = {0U, 0U, 31U, 59U, 90U, 120U, 151U, 181U, 212U, 243U, 273U, 304U, 334U};
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uint32_t seconds;
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/* Compute number of days from 1970 till given year*/
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seconds = (datetime->year - 1970U) * DAYS_IN_A_YEAR;
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/* Add leap year days */
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seconds += ((datetime->year / 4) - (1970U / 4));
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/* Add number of days till given month*/
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seconds += monthDays[datetime->month];
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/* Add days in given month. We subtract the current day as it is
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* represented in the hours, minutes and seconds field*/
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seconds += (datetime->day - 1);
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/* For leap year if month less than or equal to Febraury, decrement day counter*/
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if ((!(datetime->year & 3U)) && (datetime->month <= 2U))
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{
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seconds--;
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}
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seconds = (seconds * SECONDS_IN_A_DAY) + (datetime->hour * SECONDS_IN_A_HOUR) +
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(datetime->minute * SECONDS_IN_A_MINUTE) + datetime->second;
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return seconds;
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}
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static void SNVS_HP_ConvertSecondsToDatetime(uint32_t seconds, snvs_hp_rtc_datetime_t *datetime)
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{
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assert(datetime);
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uint32_t x;
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uint32_t secondsRemaining, days;
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uint16_t daysInYear;
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/* Table of days in a month for a non leap year. First entry in the table is not used,
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* valid months start from 1
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*/
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uint8_t daysPerMonth[] = {0U, 31U, 28U, 31U, 30U, 31U, 30U, 31U, 31U, 30U, 31U, 30U, 31U};
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/* Start with the seconds value that is passed in to be converted to date time format */
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secondsRemaining = seconds;
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/* Calcuate the number of days, we add 1 for the current day which is represented in the
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* hours and seconds field
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*/
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days = secondsRemaining / SECONDS_IN_A_DAY + 1;
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/* Update seconds left*/
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secondsRemaining = secondsRemaining % SECONDS_IN_A_DAY;
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/* Calculate the datetime hour, minute and second fields */
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datetime->hour = secondsRemaining / SECONDS_IN_A_HOUR;
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secondsRemaining = secondsRemaining % SECONDS_IN_A_HOUR;
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datetime->minute = secondsRemaining / 60U;
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datetime->second = secondsRemaining % SECONDS_IN_A_MINUTE;
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/* Calculate year */
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daysInYear = DAYS_IN_A_YEAR;
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datetime->year = YEAR_RANGE_START;
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while (days > daysInYear)
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{
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/* Decrease day count by a year and increment year by 1 */
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days -= daysInYear;
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datetime->year++;
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/* Adjust the number of days for a leap year */
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if (datetime->year & 3U)
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{
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daysInYear = DAYS_IN_A_YEAR;
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}
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else
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{
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daysInYear = DAYS_IN_A_YEAR + 1;
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}
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}
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/* Adjust the days in February for a leap year */
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if (!(datetime->year & 3U))
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{
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daysPerMonth[2] = 29U;
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}
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for (x = 1U; x <= 12U; x++)
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{
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if (days <= daysPerMonth[x])
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{
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datetime->month = x;
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break;
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}
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else
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{
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days -= daysPerMonth[x];
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}
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}
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datetime->day = days;
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}
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#if (!(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && \
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defined(SNVS_HP_CLOCKS))
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static uint32_t SNVS_HP_GetInstance(SNVS_Type *base)
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{
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return 0U;
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}
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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void SNVS_HP_RTC_Init(SNVS_Type *base, const snvs_hp_rtc_config_t *config)
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{
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assert(config);
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#if (!(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && \
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defined(SNVS_HP_CLOCKS))
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uint32_t instance = SNVS_HP_GetInstance(base);
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CLOCK_EnableClock(s_snvsHpClock[instance]);
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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base->HPCOMR |= SNVS_HPCOMR_NPSWA_EN_MASK | SNVS_HPCOMR_SW_SV_MASK;
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base->HPCR = SNVS_HPCR_PI_FREQ(config->periodicInterruptFreq);
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if (config->rtcCalEnable)
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{
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base->HPCR = SNVS_HPCR_HPCALB_VAL_MASK & (config->rtcCalValue << SNVS_HPCR_HPCALB_VAL_SHIFT);
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base->HPCR |= SNVS_HPCR_HPCALB_EN_MASK;
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}
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}
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void SNVS_HP_RTC_Deinit(SNVS_Type *base)
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{
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base->HPCR &= ~SNVS_HPCR_RTC_EN_MASK;
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#if (!(defined(FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL) && \
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defined(SNVS_HP_CLOCKS))
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uint32_t instance = SNVS_HP_GetInstance(base);
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CLOCK_DisableClock(s_snvsHpClock[instance]);
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#endif /* FSL_SDK_DISABLE_DRIVER_CLOCK_CONTROL */
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}
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void SNVS_HP_RTC_GetDefaultConfig(snvs_hp_rtc_config_t *config)
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{
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assert(config);
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config->rtcCalEnable = false;
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config->rtcCalValue = 0U;
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config->periodicInterruptFreq = 0U;
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}
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static uint32_t SNVS_HP_RTC_GetSeconds(SNVS_Type *base)
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{
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uint32_t seconds = 0;
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uint32_t tmp = 0;
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/* Do consecutive reads until value is correct */
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do
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{
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seconds = tmp;
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tmp = (base->HPRTCMR << 17U) | (base->HPRTCLR >> 15U);
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} while (tmp != seconds);
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return seconds;
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}
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status_t SNVS_HP_RTC_SetDatetime(SNVS_Type *base, const snvs_hp_rtc_datetime_t *datetime)
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{
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assert(datetime);
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uint32_t seconds = 0U;
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uint32_t tmp = base->HPCR;
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/* disable RTC */
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SNVS_HP_RTC_StopTimer(base);
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/* Return error if the time provided is not valid */
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if (!(SNVS_HP_CheckDatetimeFormat(datetime)))
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{
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return kStatus_InvalidArgument;
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}
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/* Set time in seconds */
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seconds = SNVS_HP_ConvertDatetimeToSeconds(datetime);
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base->HPRTCMR = (uint32_t)(seconds >> 17U);
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base->HPRTCLR = (uint32_t)(seconds << 15U);
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/* reenable RTC in case that it was enabled before */
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if (tmp & SNVS_HPCR_RTC_EN_MASK)
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{
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SNVS_HP_RTC_StartTimer(base);
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}
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return kStatus_Success;
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}
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void SNVS_HP_RTC_GetDatetime(SNVS_Type *base, snvs_hp_rtc_datetime_t *datetime)
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{
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assert(datetime);
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SNVS_HP_ConvertSecondsToDatetime(SNVS_HP_RTC_GetSeconds(base), datetime);
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}
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status_t SNVS_HP_RTC_SetAlarm(SNVS_Type *base, const snvs_hp_rtc_datetime_t *alarmTime)
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{
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assert(alarmTime);
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uint32_t alarmSeconds = 0U;
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uint32_t currSeconds = 0U;
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uint32_t tmp = base->HPCR;
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/* Return error if the alarm time provided is not valid */
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if (!(SNVS_HP_CheckDatetimeFormat(alarmTime)))
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{
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return kStatus_InvalidArgument;
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}
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alarmSeconds = SNVS_HP_ConvertDatetimeToSeconds(alarmTime);
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currSeconds = SNVS_HP_RTC_GetSeconds(base);
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/* Return error if the alarm time has passed */
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if (alarmSeconds < currSeconds)
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{
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return kStatus_Fail;
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}
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/* disable RTC alarm interrupt */
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base->HPCR &= ~SNVS_HPCR_HPTA_EN_MASK;
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while (base->HPCR & SNVS_HPCR_HPTA_EN_MASK)
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{
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}
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/* Set alarm in seconds*/
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base->HPTAMR = (uint32_t)(alarmSeconds >> 17U);
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base->HPTALR = (uint32_t)(alarmSeconds << 15U);
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/* reenable RTC alarm interrupt in case that it was enabled before */
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base->HPCR = tmp;
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return kStatus_Success;
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}
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void SNVS_HP_RTC_GetAlarm(SNVS_Type *base, snvs_hp_rtc_datetime_t *datetime)
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{
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assert(datetime);
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uint32_t alarmSeconds = 0U;
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/* Get alarm in seconds */
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alarmSeconds = (base->HPTAMR << 17U) | (base->HPTALR >> 15U);
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SNVS_HP_ConvertSecondsToDatetime(alarmSeconds, datetime);
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}
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#if (defined(FSL_FEATURE_SNVS_HAS_SRTC) && (FSL_FEATURE_SNVS_HAS_SRTC > 0))
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void SNVS_HP_RTC_TimeSynchronize(SNVS_Type *base)
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{
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uint32_t tmp = base->HPCR;
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/* disable RTC */
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SNVS_HP_RTC_StopTimer(base);
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base->HPCR |= SNVS_HPCR_HP_TS_MASK;
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/* reenable RTC in case that it was enabled before */
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if (tmp & SNVS_HPCR_RTC_EN_MASK)
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{
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SNVS_HP_RTC_StartTimer(base);
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}
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}
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#endif /* FSL_FEATURE_SNVS_HAS_SRTC */
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uint32_t SNVS_HP_RTC_GetStatusFlags(SNVS_Type *base)
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{
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uint32_t flags = 0U;
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if (base->HPSR & SNVS_HPSR_PI_MASK)
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{
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flags |= kSNVS_RTC_PeriodicInterruptFlag;
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}
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if (base->HPSR & SNVS_HPSR_HPTA_MASK)
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{
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flags |= kSNVS_RTC_AlarmInterruptFlag;
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}
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return flags;
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}
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void SNVS_HP_RTC_ClearStatusFlags(SNVS_Type *base, uint32_t mask)
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{
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uint32_t wrMask = 0U;
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if (mask & kSNVS_RTC_PeriodicInterruptFlag)
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{
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wrMask |= SNVS_HPSR_PI_MASK;
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}
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if (mask & kSNVS_RTC_AlarmInterruptFlag)
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{
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wrMask |= SNVS_HPSR_HPTA_MASK;
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}
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base->HPSR |= wrMask;
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}
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void SNVS_HP_RTC_EnableInterrupts(SNVS_Type *base, uint32_t mask)
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{
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uint32_t wrMask = 0U;
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if (mask & kSNVS_RTC_PeriodicInterruptEnable)
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{
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wrMask |= SNVS_HPCR_PI_EN_MASK;
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}
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if (mask & kSNVS_RTC_AlarmInterruptEnable)
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{
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wrMask |= SNVS_HPCR_HPTA_EN_MASK;
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}
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|
|
base->HPCR |= wrMask;
|
|
}
|
|
|
|
void SNVS_HP_RTC_DisableInterrupts(SNVS_Type *base, uint32_t mask)
|
|
{
|
|
uint32_t wrMask = 0U;
|
|
|
|
if (mask & kSNVS_RTC_PeriodicInterruptEnable)
|
|
{
|
|
wrMask |= SNVS_HPCR_PI_EN_MASK;
|
|
}
|
|
|
|
if (mask & kSNVS_RTC_AlarmInterruptEnable)
|
|
{
|
|
wrMask |= SNVS_HPCR_HPTA_EN_MASK;
|
|
}
|
|
|
|
base->HPCR &= ~wrMask;
|
|
}
|
|
|
|
uint32_t SNVS_HP_RTC_GetEnabledInterrupts(SNVS_Type *base)
|
|
{
|
|
uint32_t val = 0U;
|
|
|
|
if (base->HPCR & SNVS_HPCR_PI_EN_MASK)
|
|
{
|
|
val |= kSNVS_RTC_PeriodicInterruptFlag;
|
|
}
|
|
|
|
if (base->HPCR & SNVS_HPCR_HPTA_EN_MASK)
|
|
{
|
|
val |= kSNVS_RTC_AlarmInterruptFlag;
|
|
}
|
|
|
|
return val;
|
|
}
|