rtc.c

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/*
 * Support and FAQ: visit <a href="https://www.microchip.com/support/">Microchip Support</a>
 */

#include "rtc.h"


#ifdef __cplusplus
extern "C" {
#endif


/* RTC Write Protect Key "RTC" in ASCII */
#define RTC_WP_KEY     (0x525443)

/* The BCD code shift value */
#define BCD_SHIFT      4

/* The BCD code mask value */
#define BCD_MASK       0xfu

/* The BCD mul/div factor value */
#define BCD_FACTOR     10

void rtc_set_hour_mode(Rtc *p_rtc, uint32_t ul_mode)
{
        if (ul_mode) {
                p_rtc->RTC_MR |= RTC_MR_HRMOD;
        } else {
                p_rtc->RTC_MR &= (~RTC_MR_HRMOD);
        }
}

uint32_t rtc_get_hour_mode(Rtc *p_rtc)
{
        uint32_t ul_temp = p_rtc->RTC_MR;

        if (ul_temp & RTC_MR_HRMOD) {
                return 1;
        } else {
                return 0;
        }
}

void rtc_enable_interrupt(Rtc *p_rtc, uint32_t ul_sources)
{
        p_rtc->RTC_IER = ul_sources;
}

void rtc_disable_interrupt(Rtc *p_rtc, uint32_t ul_sources)
{
        p_rtc->RTC_IDR = ul_sources;
}

uint32_t rtc_get_interrupt_mask(Rtc *p_rtc)
{
        return p_rtc->RTC_IMR;
}

void rtc_get_time(Rtc *p_rtc, uint32_t *pul_hour, uint32_t *pul_minute,
                uint32_t *pul_second)
{
        uint32_t ul_time;
        uint32_t ul_temp;

        /* Get the current RTC time (multiple reads are necessary to insure a stable value). */
        ul_time = p_rtc->RTC_TIMR;
        while (ul_time != p_rtc->RTC_TIMR) {
                ul_time = p_rtc->RTC_TIMR;
        }

        /* Hour */
        if (pul_hour) {
                ul_temp = (ul_time & RTC_TIMR_HOUR_Msk) >> RTC_TIMR_HOUR_Pos;
                *pul_hour = (ul_temp >> BCD_SHIFT) * BCD_FACTOR + (ul_temp & BCD_MASK);

                if ((ul_time & RTC_TIMR_AMPM) == RTC_TIMR_AMPM) {
                        *pul_hour += 12;
                }
        }

        /* Minute */
        if (pul_minute) {
                ul_temp = (ul_time & RTC_TIMR_MIN_Msk) >> RTC_TIMR_MIN_Pos;
                *pul_minute = (ul_temp >> BCD_SHIFT) * BCD_FACTOR +  (ul_temp & BCD_MASK);
        }

        /* Second */
        if (pul_second) {
                ul_temp = (ul_time & RTC_TIMR_SEC_Msk) >> RTC_TIMR_SEC_Pos;
                *pul_second = (ul_temp >> BCD_SHIFT) * BCD_FACTOR + (ul_temp & BCD_MASK);
        }
}

uint32_t rtc_set_time(Rtc *p_rtc, uint32_t ul_hour, uint32_t ul_minute,
                uint32_t ul_second)
{
        uint32_t ul_time = 0;

        /* If 12-hour mode, set AMPM bit */
        if ((p_rtc->RTC_MR & RTC_MR_HRMOD) == RTC_MR_HRMOD) {
                if (ul_hour > 12) {
                        ul_hour -= 12;
                        ul_time |= RTC_TIMR_AMPM;
                }
        }

        /* Hour */
        ul_time |= ((ul_hour / BCD_FACTOR) << (RTC_TIMR_HOUR_Pos + BCD_SHIFT)) |
                        ((ul_hour % BCD_FACTOR) << RTC_TIMR_HOUR_Pos);

        /* Minute */
        ul_time |= ((ul_minute / BCD_FACTOR) << (RTC_TIMR_MIN_Pos + BCD_SHIFT)) |
                        ((ul_minute % BCD_FACTOR) << RTC_TIMR_MIN_Pos);

        /* Second */
        ul_time |= ((ul_second / BCD_FACTOR) << (RTC_TIMR_SEC_Pos + BCD_SHIFT)) |
                        ((ul_second % BCD_FACTOR) << RTC_TIMR_SEC_Pos);

        //Clear RTC_SR.SEC so we can tell when the second periodic event happens
        p_rtc->RTC_SCCR = RTC_SCCR_SECCLR;
        
        //At this point we should not be in update mode (counting stopped)
        if((p_rtc->RTC_CR & (RTC_CR_UPDTIM | RTC_CR_UPDCAL)) != 0)
                p_rtc->RTC_CR &= ~(RTC_CR_UPDTIM | RTC_CR_UPDCAL);      //If we are, clear it so it will start counting so the following will always succeed
        
        /* Update time register. Check the spec for the flow. */
        while ((p_rtc->RTC_SR & RTC_SR_SEC) != RTC_SR_SEC);
        p_rtc->RTC_CR |= RTC_CR_UPDTIM;
        while ((p_rtc->RTC_SR & RTC_SR_ACKUPD) != RTC_SR_ACKUPD);
        p_rtc->RTC_SCCR = RTC_SCCR_ACKCLR;
        p_rtc->RTC_TIMR = ul_time;
        p_rtc->RTC_CR &= (~RTC_CR_UPDTIM);

        return (p_rtc->RTC_VER & RTC_VER_NVTIM);
}

uint32_t rtc_set_time_alarm(Rtc *p_rtc,
                uint32_t ul_hour_flag, uint32_t ul_hour,
                uint32_t ul_minute_flag, uint32_t ul_minute,
                uint32_t ul_second_flag, uint32_t ul_second)
{
        uint32_t ul_alarm = 0;

        /* Hour alarm setting */
        if (ul_hour_flag) {
                /* If 12-hour mode, set AMPM bit */
                if ((p_rtc->RTC_MR & RTC_MR_HRMOD) == RTC_MR_HRMOD) {
                        if (ul_hour > 12) {
                                ul_hour -= 12;
                                ul_alarm |= RTC_TIMR_AMPM;
                        }
                }

                ul_alarm |= ((ul_hour / BCD_FACTOR) << (RTC_TIMR_HOUR_Pos + BCD_SHIFT)) |
                                ((ul_hour % BCD_FACTOR) << RTC_TIMR_HOUR_Pos);
        }

        /* Minute alarm setting */
        if (ul_minute_flag) {
                ul_alarm |= ((ul_minute / BCD_FACTOR) << (RTC_TIMR_MIN_Pos + BCD_SHIFT)) |
                                ((ul_minute % BCD_FACTOR) << RTC_TIMR_MIN_Pos);
        }

        /* Second alarm setting */
        if (ul_second_flag) {
                ul_alarm |= ((ul_second / BCD_FACTOR) << (RTC_TIMR_SEC_Pos + BCD_SHIFT)) |
                                ((ul_second % BCD_FACTOR) << RTC_TIMR_SEC_Pos);
        }

        p_rtc->RTC_TIMALR &= ~(RTC_TIMALR_SECEN | RTC_TIMALR_MINEN | RTC_TIMALR_HOUREN);
        p_rtc->RTC_TIMALR = ul_alarm;
        p_rtc->RTC_TIMALR |= (RTC_TIMALR_SECEN | RTC_TIMALR_MINEN | RTC_TIMALR_HOUREN);

        return (p_rtc->RTC_VER & RTC_VER_NVTIMALR);
}

void rtc_get_date(Rtc *p_rtc, uint32_t *pul_year, uint32_t *pul_month,
                uint32_t *pul_day, uint32_t *pul_week)
{
        uint32_t ul_date;
        uint32_t ul_cent;
        uint32_t ul_temp;

        /* Get the current date (multiple reads are necessary to insure a stable value). */
        ul_date = p_rtc->RTC_CALR;
        while (ul_date != p_rtc->RTC_CALR) {
                ul_date = p_rtc->RTC_CALR;
        }

        /* Retrieve year */
        if (pul_year) {
                ul_temp = (ul_date & RTC_CALR_CENT_Msk) >> RTC_CALR_CENT_Pos;
                ul_cent = (ul_temp >> BCD_SHIFT) * BCD_FACTOR + (ul_temp & BCD_MASK);
                ul_temp = (ul_date & RTC_CALR_YEAR_Msk) >> RTC_CALR_YEAR_Pos;
                *pul_year = (ul_cent * BCD_FACTOR * BCD_FACTOR) +
                                (ul_temp >> BCD_SHIFT) * BCD_FACTOR + (ul_temp & BCD_MASK);
        }

        /* Retrieve month */
        if (pul_month) {
                ul_temp = (ul_date & RTC_CALR_MONTH_Msk) >> RTC_CALR_MONTH_Pos;
                *pul_month = (ul_temp >> BCD_SHIFT) * BCD_FACTOR + (ul_temp & BCD_MASK);
        }

        /* Retrieve day */
        if (pul_day) {
                ul_temp = (ul_date & RTC_CALR_DATE_Msk) >> RTC_CALR_DATE_Pos;
                *pul_day = (ul_temp >> BCD_SHIFT) * BCD_FACTOR + (ul_temp & BCD_MASK);
        }

        /* Retrieve week */
        if (pul_week) {
                *pul_week = ((ul_date & RTC_CALR_DAY_Msk) >> RTC_CALR_DAY_Pos);
        }
}

uint32_t rtc_set_date(Rtc *p_rtc, uint32_t ul_year, uint32_t ul_month,
                uint32_t ul_day, uint32_t ul_week)
{
        uint32_t ul_date = 0;

        /* Cent */
        ul_date |= ((ul_year / BCD_FACTOR / BCD_FACTOR / BCD_FACTOR) <<
                        (RTC_CALR_CENT_Pos + BCD_SHIFT) |
                        ((ul_year / BCD_FACTOR / BCD_FACTOR) % BCD_FACTOR) <<  RTC_CALR_CENT_Pos);

        /* Year */
        ul_date |= (((ul_year / BCD_FACTOR) % BCD_FACTOR) <<
                        (RTC_CALR_YEAR_Pos + BCD_SHIFT)) |
                        ((ul_year % BCD_FACTOR) << RTC_CALR_YEAR_Pos);

        /* Month */
        ul_date |= ((ul_month / BCD_FACTOR) << (RTC_CALR_MONTH_Pos + BCD_SHIFT)) |
                        ((ul_month % BCD_FACTOR) << RTC_CALR_MONTH_Pos);

        /* Week */
        ul_date |= (ul_week << RTC_CALR_DAY_Pos);

        /* Day */
        ul_date |= ((ul_day / BCD_FACTOR) << (RTC_CALR_DATE_Pos + BCD_SHIFT)) |
                        ((ul_day % BCD_FACTOR) << RTC_CALR_DATE_Pos);

        //Clear RTC_SR.SEC so we can tell when the second periodic event happens
        p_rtc->RTC_SCCR = RTC_SCCR_SECCLR;
        
        //At this point we should not be in update mode (counting stopped)
        if((p_rtc->RTC_CR & (RTC_CR_UPDTIM | RTC_CR_UPDCAL)) != 0)
                p_rtc->RTC_CR &= ~(RTC_CR_UPDTIM | RTC_CR_UPDCAL);      //If we are, clear it so it will start counting so the following will always succeed
        
        /* Update calendar register. Check the spec for the flow. */
        while ((p_rtc->RTC_SR & RTC_SR_SEC) != RTC_SR_SEC);
        p_rtc->RTC_CR |= RTC_CR_UPDCAL;
        while ((p_rtc->RTC_SR & RTC_SR_ACKUPD) != RTC_SR_ACKUPD);
        p_rtc->RTC_SCCR = RTC_SCCR_ACKCLR;
        p_rtc->RTC_CALR = ul_date;
        p_rtc->RTC_CR &= (~RTC_CR_UPDCAL);

        return (p_rtc->RTC_VER & RTC_VER_NVCAL);
}

uint32_t rtc_set_date_alarm(Rtc *p_rtc,
                uint32_t ul_month_flag, uint32_t ul_month,
                uint32_t ul_day_flag, uint32_t ul_day)
{
        uint32_t ul_alarm = 0;

        /* Month alarm setting */
        if (ul_month_flag) {
                ul_alarm |= ((ul_month / BCD_FACTOR) << (RTC_CALR_MONTH_Pos + BCD_SHIFT)) |
                                ((ul_month % BCD_FACTOR) << RTC_CALR_MONTH_Pos);
        }

        /* Day alarm setting */
        if (ul_day_flag) {
                ul_alarm |= ((ul_day / BCD_FACTOR) << (RTC_CALR_DATE_Pos + BCD_SHIFT)) |
                                ((ul_day % BCD_FACTOR) << RTC_CALR_DATE_Pos);
        }

        /* Set alarm */
        p_rtc->RTC_CALALR &= ~(RTC_CALALR_MTHEN | RTC_CALALR_DATEEN);
        p_rtc->RTC_CALALR = ul_alarm;
        p_rtc->RTC_CALALR |= (RTC_CALALR_MTHEN | RTC_CALALR_DATEEN);

        return (p_rtc->RTC_VER & RTC_VER_NVCALALR);
}

void rtc_clear_time_alarm(Rtc *p_rtc)
{
        p_rtc->RTC_TIMALR = 0;
}

void rtc_clear_date_alarm(Rtc *p_rtc)
{
        /* Need a valid value without enabling */
        p_rtc->RTC_CALALR = RTC_CALALR_MONTH(0x01) | RTC_CALALR_DATE(0x01);
}

uint32_t rtc_get_status(Rtc *p_rtc)
{
        return (p_rtc->RTC_SR);
}

void rtc_clear_status(Rtc *p_rtc, uint32_t ul_clear)
{
        p_rtc->RTC_SCCR = ul_clear;
}

uint32_t rtc_get_valid_entry(Rtc *p_rtc)
{
        return (p_rtc->RTC_VER);
}

void rtc_set_time_event(Rtc *p_rtc, uint32_t ul_selection)
{
        p_rtc->RTC_CR &= ~RTC_CR_TIMEVSEL_Msk;
        p_rtc->RTC_CR |= (ul_selection << RTC_CR_TIMEVSEL_Pos) & RTC_CR_TIMEVSEL_Msk;
}

void rtc_set_calendar_event(Rtc *p_rtc, uint32_t ul_selection)
{
        p_rtc->RTC_CR &= ~RTC_CR_CALEVSEL_Msk;
        p_rtc->RTC_CR |= (ul_selection << RTC_CR_CALEVSEL_Pos) & RTC_CR_CALEVSEL_Msk;
}

#if ((SAM3S8) || (SAM3SD8) || (SAM4S) || (SAM4N) || (SAM4C) || (SAMG) || (SAM4CP) || (SAM4CM) || defined(__DOXYGEN__))

void rtc_set_calendar_mode(Rtc *p_rtc, uint32_t ul_mode)
{
        if (ul_mode) {
                p_rtc->RTC_MR |= RTC_MR_PERSIAN;
        } else {
                p_rtc->RTC_MR &= (~RTC_MR_PERSIAN);
        }
}

uint32_t rtc_get_calendar_mode(Rtc *p_rtc)
{
        uint32_t ul_temp = p_rtc->RTC_MR;

        if (ul_temp & RTC_MR_PERSIAN) {
                return 1;
        } else {
                return 0;
        }
}

void rtc_set_calibration(Rtc *p_rtc, uint32_t ul_direction_ppm,
                uint32_t ul_correction, uint32_t ul_range_ppm)
{
        uint32_t ul_temp;

        ul_temp = p_rtc->RTC_MR;

        if (ul_direction_ppm) {
                ul_temp |= RTC_MR_NEGPPM;
        } else {
                ul_temp &= (~RTC_MR_NEGPPM);
        }

        ul_temp &= (~RTC_MR_CORRECTION_Msk);
        ul_temp |= RTC_MR_CORRECTION(ul_correction);

        if (ul_range_ppm) {
                ul_temp |= RTC_MR_HIGHPPM;
        } else {
                ul_temp &= (~RTC_MR_HIGHPPM);
        }

        p_rtc->RTC_MR = ul_temp;
}
#endif

#if ((SAM3S8) || (SAM3SD8) || (SAM4S) || (SAM4C) || (SAMG) || (SAM4CP) || (SAM4CM) || SAMV71 || SAMV70 || SAME70 || SAMS70 || defined(__DOXYGEN__))

void rtc_set_waveform(Rtc *p_rtc, uint32_t ul_channel, uint32_t ul_value)
{
        if (ul_channel == 0) {
                switch (ul_value) {
                case 0:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT0_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT0_NO_WAVE;
                        break;

                case 1:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT0_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT0_FREQ1HZ;
                        break;

                case 2:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT0_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT0_FREQ32HZ;
                        break;

                case 3:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT0_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT0_FREQ64HZ;
                        break;

                case 4:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT0_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT0_FREQ512HZ;
                        break;

#if (!SAMG)
                case 5:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT0_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT0_ALARM_TOGGLE;
                        break;
#endif

                case 6:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT0_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT0_ALARM_FLAG;
                        break;

#if (!SAMG)
                case 7:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT0_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT0_PROG_PULSE;
                        break;
#endif

                default:
                        break;
                }
        } else {
        #if (!SAM4C && !SAM4CP && !SAM4CM)
                switch (ul_value) {
                case 0:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT1_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT1_NO_WAVE;
                        break;

                case 1:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT1_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT1_FREQ1HZ;
                        break;

                case 2:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT1_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT1_FREQ32HZ;
                        break;

                case 3:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT1_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT1_FREQ64HZ;
                        break;

                case 4:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT1_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT1_FREQ512HZ;
                        break;

#if (!SAMG)
                case 5:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT1_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT1_ALARM_TOGGLE;
                        break;
#endif

                case 6:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT1_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT1_ALARM_FLAG;
                        break;

#if (!SAMG)
                case 7:
                        p_rtc->RTC_MR &= ~RTC_MR_OUT1_Msk;
                        p_rtc->RTC_MR |= RTC_MR_OUT1_PROG_PULSE;
                        break;
#endif

                default:
                        break;
                }
        #endif
        }
}

#if ((SAM3S8) || (SAM3SD8) || (SAM4S) || (SAM4C) || SAMV71 || SAMV70 || SAME70 || SAMS70 || defined(__DOXYGEN__))

void rtc_set_pulse_parameter(Rtc *p_rtc, uint32_t ul_time_high,
                uint32_t ul_period)
{
        uint32_t ul_temp;

        ul_temp = p_rtc->RTC_MR;

        ul_temp |= (RTC_MR_THIGH_Msk & ((ul_time_high) << RTC_MR_THIGH_Pos));
        ul_temp |= (RTC_MR_TPERIOD_Msk & ((ul_period) << RTC_MR_TPERIOD_Pos));

        p_rtc->RTC_MR = ul_temp;
}
#endif
#endif


#if ((SAM3N) || (SAM3U) || (SAM3XA) || defined(__DOXYGEN__))

void rtc_set_writeprotect(Rtc *p_rtc, uint32_t ul_enable)
{
        if (ul_enable) {
                p_rtc->RTC_WPMR = RTC_WPMR_WPKEY(RTC_WP_KEY) | RTC_WPMR_WPEN;
        } else {
                p_rtc->RTC_WPMR = RTC_WPMR_WPKEY(RTC_WP_KEY);
        }
}
#endif /* ((SAM3N) || (SAM3U) || (SAM3XA)) */

#if SAM4C || SAM4CP || SAM4CM || defined(__DOXYGEN__)

void rtc_get_tamper_time(Rtc *p_rtc, uint32_t *pul_hour, uint32_t *pul_minute,
                uint32_t *pul_second, uint8_t reg_num)
{
        uint32_t ul_time;
        uint32_t ul_temp;

        /* Get the current RTC time (multiple reads are to insure a stable value). */
        ul_time = p_rtc->RTC_TS[reg_num].RTC_TSTR;
        while (ul_time != p_rtc->RTC_TS[reg_num].RTC_TSTR) {
                ul_time = p_rtc->RTC_TS[reg_num].RTC_TSTR;
        }

        /* Hour */
        if (pul_hour) {
                ul_temp = (ul_time & RTC_TSTR_HOUR_Msk) >> RTC_TSTR_HOUR_Pos;
                *pul_hour = (ul_temp >> BCD_SHIFT) * BCD_FACTOR + (ul_temp & BCD_MASK);

                if ((ul_time & RTC_TSTR_AMPM) == RTC_TSTR_AMPM) {
                        *pul_hour += 12;
                }
        }

        /* Minute */
        if (pul_minute) {
                ul_temp = (ul_time & RTC_TSTR_MIN_Msk) >> RTC_TSTR_MIN_Pos;
                *pul_minute = (ul_temp >> BCD_SHIFT) * BCD_FACTOR + (ul_temp & BCD_MASK);
        }

        /* Second */
        if (pul_second) {
                ul_temp = (ul_time & RTC_TSTR_SEC_Msk) >> RTC_TSTR_SEC_Pos;
                *pul_second = (ul_temp >> BCD_SHIFT) * BCD_FACTOR + (ul_temp & BCD_MASK);
        }
}

void rtc_get_tamper_date(Rtc *p_rtc, uint32_t *pul_year, uint32_t *pul_month,
                uint32_t *pul_day, uint32_t *pul_week, uint8_t reg_num)
{
        uint32_t ul_date;
        uint32_t ul_cent;
        uint32_t ul_temp;

        /* Get the current date (multiple reads are to insure a stable value). */
        ul_date = p_rtc->RTC_TS[reg_num].RTC_TSDR;
        while (ul_date != p_rtc->RTC_TS[reg_num].RTC_TSDR) {
                ul_date = p_rtc->RTC_TS[reg_num].RTC_TSDR;
        }

        /* Retrieve year */
        if (pul_year) {
                ul_temp = (ul_date & RTC_TSDR_CENT_Msk) >> RTC_TSDR_CENT_Pos;
                ul_cent = (ul_temp >> BCD_SHIFT) * BCD_FACTOR + (ul_temp & BCD_MASK);
                ul_temp = (ul_date & RTC_TSDR_YEAR_Msk) >> RTC_TSDR_YEAR_Pos;
                *pul_year = (ul_cent * BCD_FACTOR * BCD_FACTOR) +
                                (ul_temp >> BCD_SHIFT) * BCD_FACTOR + (ul_temp & BCD_MASK);
        }

        /* Retrieve month */
        if (pul_month) {
                ul_temp = (ul_date & RTC_TSDR_MONTH_Msk) >> RTC_TSDR_MONTH_Pos;
                *pul_month = (ul_temp >> BCD_SHIFT) * BCD_FACTOR + (ul_temp & BCD_MASK);
        }

        /* Retrieve day */
        if (pul_day) {
                ul_temp = (ul_date & RTC_TSDR_DATE_Msk) >> RTC_TSDR_DATE_Pos;
                *pul_day = (ul_temp >> BCD_SHIFT) * BCD_FACTOR + (ul_temp & BCD_MASK);
        }

        /* Retrieve week */
        if (pul_week) {
                *pul_week = ((ul_date & RTC_TSDR_DAY_Msk) >> RTC_TSDR_DAY_Pos);
        }
}

uint32_t rtc_get_tamper_source(Rtc *p_rtc, uint8_t reg_num)
{
        return (p_rtc->RTC_TS[reg_num].RTC_TSSR & RTC_TSSR_TSRC_Msk) >>
                        RTC_TSSR_TSRC_Pos;
}

uint32_t rtc_get_tamper_event_counter(Rtc *p_rtc)
{
        return (p_rtc->RTC_TS[0].RTC_TSTR & RTC_TSTR_TEVCNT_Msk) >>
                        RTC_TSTR_TEVCNT_Pos;
}

bool rtc_is_tamper_occur_in_backup_mode(Rtc *p_rtc, uint8_t reg_num)
{
        if(p_rtc->RTC_TS[reg_num].RTC_TSTR & RTC_TSTR_BACKUP) {
                return true;
        } else {
                return false;
        }
}
#endif

#if (SAMG55) || defined(__DOXYGEN__)

uint32_t rtc_get_milliseconds(Rtc *p_rtc)
{
        return (p_rtc->RTC_MSR) & RTC_MSR_MS_Msk;
}
#endif




#ifdef __cplusplus
}
#endif

---

inertial_sense_ros
Author(s):
autogenerated on Sun Feb 28 2021 03:17:58