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31 #include "fsl_rtc_hal.h"
32 #include "fsl_device_registers.h"
34 /*******************************************************************************
36 ******************************************************************************/
38 #define SECONDS_IN_A_DAY (86400U)
39 #define SECONDS_IN_A_HOUR (3600U)
40 #define SECONDS_IN_A_MIN (60U)
41 #define MINS_IN_A_HOUR (60U)
42 #define HOURS_IN_A_DAY (24U)
43 #define DAYS_IN_A_YEAR (365U)
44 #define DAYS_IN_A_LEAP_YEAR (366U)
45 #define YEAR_RANGE_START (1970U)
46 #define YEAR_RANGE_END (2099U)
48 /*******************************************************************************
50 ******************************************************************************/
52 /* Table of month length (in days) for the Un-leap-year*/
53 static const uint8_t ULY[] = {0U, 31U, 28U, 31U, 30U, 31U, 30U, 31U, 31U, 30U,
56 /* Table of month length (in days) for the Leap-year*/
57 static const uint8_t LY[] = {0U, 31U, 29U, 31U, 30U, 31U, 30U, 31U, 31U, 30U,
60 /* Number of days from begin of the non Leap-year*/
61 static const uint16_t MONTH_DAYS[] = {0U, 0U, 31U, 59U, 90U, 120U, 151U, 181U,
62 212U, 243U, 273U, 304U, 334U};
64 /*******************************************************************************
66 ******************************************************************************/
68 /*FUNCTION**********************************************************************
70 * Function Name : RTC_HAL_ConvertSecsToDatetime
71 * Description : converts time data from seconds to a datetime structure.
72 * This function will convert time data from seconds to a datetime structure.
74 *END**************************************************************************/
75 void RTC_HAL_ConvertSecsToDatetime(const uint32_t * seconds, rtc_datetime_t * datetime)
78 uint32_t Seconds, Days, Days_in_year;
79 const uint8_t *Days_in_month;
81 /* Start from 1970-01-01*/
84 Days = Seconds / SECONDS_IN_A_DAY;
86 Seconds = Seconds % SECONDS_IN_A_DAY;
88 datetime->hour = Seconds / SECONDS_IN_A_HOUR;
90 Seconds = Seconds % SECONDS_IN_A_HOUR;
92 datetime->minute = Seconds / SECONDS_IN_A_MIN;
94 datetime->second = Seconds % SECONDS_IN_A_MIN;
96 datetime->year = YEAR_RANGE_START;
97 Days_in_year = DAYS_IN_A_YEAR;
99 while (Days > Days_in_year)
101 Days -= Days_in_year;
103 if (datetime->year & 3U)
105 Days_in_year = DAYS_IN_A_YEAR;
109 Days_in_year = DAYS_IN_A_LEAP_YEAR;
113 if (datetime->year & 3U)
122 for (x=1U; x <= 12U; x++)
124 if (Days <= (*(Days_in_month + x)))
131 Days -= (*(Days_in_month + x));
135 datetime->day = Days;
138 /*FUNCTION**********************************************************************
140 * Function Name : RTC_HAL_IsDatetimeCorrectFormat
141 * Description : checks if the datetime is in correct format.
142 * This function will check if the given datetime is in the correct format.
144 *END**************************************************************************/
145 bool RTC_HAL_IsDatetimeCorrectFormat(const rtc_datetime_t * datetime)
149 /* Test correctness of given parameters*/
150 if ((datetime->year < YEAR_RANGE_START) || (datetime->year > YEAR_RANGE_END) ||
151 (datetime->month > 12U) || (datetime->month < 1U) ||
152 (datetime->day > 31U) || (datetime->day < 1U) ||
153 (datetime->hour >= HOURS_IN_A_DAY) || (datetime->minute >= MINS_IN_A_HOUR) ||
154 (datetime->second >= SECONDS_IN_A_MIN))
156 /* If not correct then error*/
164 /* Is given year un-leap-one?*/
165 /* Leap year calculation only looks for years divisible by 4 as acceptable years is limited */
166 if ( result && (datetime->year & 3U))
168 /* Does the obtained number of days exceed number of days in the appropriate month & year?*/
169 if (ULY[datetime->month] < datetime->day)
171 /* If yes (incorrect datetime inserted) then error*/
175 else /* Is given year leap-one?*/
177 /* Does the obtained number of days exceed number of days in the appropriate month & year?*/
178 if (result && (LY[datetime->month] < datetime->day))
180 /* if yes (incorrect date inserted) then error*/
188 /*FUNCTION**********************************************************************
190 * Function Name : RTC_HAL_ConvertDatetimeToSecs
191 * Description : converts time data from datetime to seconds.
192 * This function will convert time data from datetime to seconds.
194 *END**************************************************************************/
195 void RTC_HAL_ConvertDatetimeToSecs(const rtc_datetime_t * datetime, uint32_t * seconds)
197 /* Compute number of days from 1970 till given year*/
198 *seconds = (datetime->year - 1970U) * DAYS_IN_A_YEAR;
199 /* Add leap year days */
200 *seconds += ((datetime->year / 4) - (1970U / 4));
201 /* Add number of days till given month*/
202 *seconds += MONTH_DAYS[datetime->month];
203 /* Add days in given month*/
204 *seconds += datetime->day;
205 /* For leap year if month less than or equal to Febraury, decrement day counter*/
206 if ((!(datetime->year & 3U)) && (datetime->month <= 2U))
211 *seconds = ((*seconds) * SECONDS_IN_A_DAY) + (datetime->hour * SECONDS_IN_A_HOUR) +
212 (datetime->minute * SECONDS_IN_A_MIN) + datetime->second;
215 /*FUNCTION**********************************************************************
217 * Function Name : RTC_HAL_Enable
218 * Description : initializes the RTC module.
219 * This function will initiate a soft-reset of the RTC module to reset
220 * all the RTC registers. It also enables the RTC oscillator.
222 *END**************************************************************************/
223 void RTC_HAL_Enable(uint32_t rtcBaseAddr)
225 /* Enable RTC oscillator since it is required to start the counter*/
226 RTC_HAL_SetOscillatorCmd(rtcBaseAddr, true);
229 void RTC_HAL_Disable(uint32_t rtcBaseAddr)
232 RTC_HAL_EnableCounter(rtcBaseAddr, false);
234 /* Disable RTC oscillator */
235 RTC_HAL_SetOscillatorCmd(rtcBaseAddr, false);
238 void RTC_HAL_Init(uint32_t rtcBaseAddr)
240 uint32_t seconds = 0x1;
242 /* Resets the RTC registers except for the SWR bit */
243 RTC_HAL_SoftwareReset(rtcBaseAddr);
244 RTC_HAL_SoftwareResetFlagClear(rtcBaseAddr);
246 /* Set TSR register to 0x1 to avoid the TIF bit being set in the SR register */
247 RTC_HAL_SetSecsReg(rtcBaseAddr, seconds);
249 /* Clear the interrupt enable register */
250 RTC_HAL_SetSecsIntCmd(rtcBaseAddr, false);
251 RTC_HAL_SetAlarmIntCmd(rtcBaseAddr, false);
252 RTC_HAL_SetTimeOverflowIntCmd(rtcBaseAddr, false);
253 RTC_HAL_SetTimeInvalidIntCmd(rtcBaseAddr, false);
256 void RTC_HAL_SetDatetime(uint32_t rtcBaseAddr, const rtc_datetime_t * datetime)
260 /* Protect against null pointers*/
263 RTC_HAL_ConvertDatetimeToSecs(datetime, &seconds);
264 /* Set time in seconds */
265 RTC_HAL_SetDatetimeInsecs(rtcBaseAddr, seconds);
268 void RTC_HAL_SetDatetimeInsecs(uint32_t rtcBaseAddr, const uint32_t seconds)
271 RTC_HAL_EnableCounter(rtcBaseAddr, false);
272 /* Set seconds counter*/
273 RTC_HAL_SetSecsReg(rtcBaseAddr, seconds);
274 /* Enable the counter*/
275 RTC_HAL_EnableCounter(rtcBaseAddr, true);
278 void RTC_HAL_GetDatetime(uint32_t rtcBaseAddr, rtc_datetime_t * datetime)
280 uint32_t seconds = 0;
282 /* Protect against null pointers*/
285 RTC_HAL_GetDatetimeInSecs(rtcBaseAddr, &seconds);
287 RTC_HAL_ConvertSecsToDatetime(&seconds, datetime);
290 void RTC_HAL_GetDatetimeInSecs(uint32_t rtcBaseAddr, uint32_t * seconds)
292 /* Protect against null pointers*/
294 *seconds = RTC_HAL_GetSecsReg(rtcBaseAddr);
297 bool RTC_HAL_SetAlarm(uint32_t rtcBaseAddr, const rtc_datetime_t * date)
299 uint32_t alrm_seconds, curr_seconds;
301 /* Protect against null pointers*/
304 RTC_HAL_ConvertDatetimeToSecs(date, &alrm_seconds);
306 /* Get the current time */
307 curr_seconds = RTC_HAL_GetSecsReg(rtcBaseAddr);
309 /* Make sure the alarm is for a future time */
310 if (alrm_seconds <= curr_seconds)
315 /* set alarm in seconds*/
316 RTC_HAL_SetAlarmReg(rtcBaseAddr, alrm_seconds);
321 void RTC_HAL_GetAlarm(uint32_t rtcBaseAddr, rtc_datetime_t * date)
323 uint32_t seconds = 0;
325 /* Protect against null pointers*/
328 /* Get alarm in seconds */
329 seconds = RTC_HAL_GetAlarmReg(rtcBaseAddr);
331 RTC_HAL_ConvertSecsToDatetime(&seconds, date);
334 #if FSL_FEATURE_RTC_HAS_MONOTONIC
336 void RTC_HAL_GetMonotonicCounter(uint32_t rtcBaseAddr, uint64_t * counter)
338 uint32_t tmpCountHigh = 0;
339 uint32_t tmpCountLow = 0;
341 tmpCountHigh = RTC_HAL_GetMonotonicCounterHigh(rtcBaseAddr);
342 tmpCountLow = RTC_HAL_GetMonotonicCounterLow(rtcBaseAddr);
344 *counter = (((uint64_t)(tmpCountHigh) << 32) | ((uint64_t)tmpCountLow));
347 void RTC_HAL_SetMonotonicCounter(uint32_t rtcBaseAddr, const uint64_t * counter)
349 uint32_t tmpCountHigh = 0;
350 uint32_t tmpCountLow = 0;
352 tmpCountHigh = (uint32_t)((*counter) >> 32);
353 RTC_HAL_SetMonotonicCounterHigh(rtcBaseAddr, tmpCountHigh);
354 tmpCountLow = (uint32_t)(*counter);
355 RTC_HAL_SetMonotonicCounterLow(rtcBaseAddr, tmpCountLow);
358 bool RTC_HAL_IncrementMonotonicCounter(uint32_t rtcBaseAddr)
362 if((!(RTC_HAL_IsMonotonicCounterOverflow(rtcBaseAddr))) && (!(RTC_HAL_IsTimeInvalid(rtcBaseAddr))))
364 /* prepare for incrementing after write*/
365 RTC_HAL_SetMonotonicEnableCmd(rtcBaseAddr, true);
367 /* write anything so the counter increments*/
368 BW_RTC_MCLR_MCL(rtcBaseAddr, 1U);
378 /*******************************************************************************
380 ******************************************************************************/