Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_K66F/drivers/fsl_rtc.c@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
144:ef7eb2e8f9f7 
added prescaler for 16 bit timers (solution as in LPC11xx), default prescaler 31 for max 28 ms period time

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /*
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2015, Freescale Semiconductor, Inc.
<> 144:ef7eb2e8f9f7 3 * All rights reserved.
<> 144:ef7eb2e8f9f7 4 *
<> 144:ef7eb2e8f9f7 5 * Redistribution and use in source and binary forms, with or without modification,
<> 144:ef7eb2e8f9f7 6 * are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * o Redistributions of source code must retain the above copyright notice, this list
<> 144:ef7eb2e8f9f7 9 * of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 10 *
<> 144:ef7eb2e8f9f7 11 * o Redistributions in binary form must reproduce the above copyright notice, this
<> 144:ef7eb2e8f9f7 12 * list of conditions and the following disclaimer in the documentation and/or
<> 144:ef7eb2e8f9f7 13 * other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 14 *
<> 144:ef7eb2e8f9f7 15 * o Neither the name of Freescale Semiconductor, Inc. nor the names of its
<> 144:ef7eb2e8f9f7 16 * contributors may be used to endorse or promote products derived from this
<> 144:ef7eb2e8f9f7 17 * software without specific prior written permission.
<> 144:ef7eb2e8f9f7 18 *
<> 144:ef7eb2e8f9f7 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
<> 144:ef7eb2e8f9f7 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
<> 144:ef7eb2e8f9f7 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 22 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
<> 144:ef7eb2e8f9f7 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
<> 144:ef7eb2e8f9f7 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
<> 144:ef7eb2e8f9f7 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
<> 144:ef7eb2e8f9f7 26 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
<> 144:ef7eb2e8f9f7 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
<> 144:ef7eb2e8f9f7 28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 29 */
<> 144:ef7eb2e8f9f7 30
<> 144:ef7eb2e8f9f7 31 #include "fsl_rtc.h"
<> 144:ef7eb2e8f9f7 32
<> 144:ef7eb2e8f9f7 33 /*******************************************************************************
<> 144:ef7eb2e8f9f7 34 * Definitions
<> 144:ef7eb2e8f9f7 35 ******************************************************************************/
<> 144:ef7eb2e8f9f7 36 #define SECONDS_IN_A_DAY (86400U)
<> 144:ef7eb2e8f9f7 37 #define SECONDS_IN_A_HOUR (3600U)
<> 144:ef7eb2e8f9f7 38 #define SECONDS_IN_A_MINUTE (60U)
<> 144:ef7eb2e8f9f7 39 #define DAYS_IN_A_YEAR (365U)
<> 144:ef7eb2e8f9f7 40 #define YEAR_RANGE_START (1970U)
<> 144:ef7eb2e8f9f7 41 #define YEAR_RANGE_END (2099U)
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 /*******************************************************************************
<> 144:ef7eb2e8f9f7 44 * Prototypes
<> 144:ef7eb2e8f9f7 45 ******************************************************************************/
<> 144:ef7eb2e8f9f7 46 /*!
<> 144:ef7eb2e8f9f7 47 * @brief Checks whether the date and time passed in is valid
<> 144:ef7eb2e8f9f7 48 *
<> 144:ef7eb2e8f9f7 49 * @param datetime Pointer to structure where the date and time details are stored
<> 144:ef7eb2e8f9f7 50 *
<> 144:ef7eb2e8f9f7 51 * @return Returns false if the date & time details are out of range; true if in range
<> 144:ef7eb2e8f9f7 52 */
<> 144:ef7eb2e8f9f7 53 static bool RTC_CheckDatetimeFormat(const rtc_datetime_t *datetime);
<> 144:ef7eb2e8f9f7 54
<> 144:ef7eb2e8f9f7 55 /*!
<> 144:ef7eb2e8f9f7 56 * @brief Converts time data from datetime to seconds
<> 144:ef7eb2e8f9f7 57 *
<> 144:ef7eb2e8f9f7 58 * @param datetime Pointer to datetime structure where the date and time details are stored
<> 144:ef7eb2e8f9f7 59 *
<> 144:ef7eb2e8f9f7 60 * @return The result of the conversion in seconds
<> 144:ef7eb2e8f9f7 61 */
<> 144:ef7eb2e8f9f7 62 static uint32_t RTC_ConvertDatetimeToSeconds(const rtc_datetime_t *datetime);
<> 144:ef7eb2e8f9f7 63
<> 144:ef7eb2e8f9f7 64 /*!
<> 144:ef7eb2e8f9f7 65 * @brief Converts time data from seconds to a datetime structure
<> 144:ef7eb2e8f9f7 66 *
<> 144:ef7eb2e8f9f7 67 * @param seconds Seconds value that needs to be converted to datetime format
<> 144:ef7eb2e8f9f7 68 * @param datetime Pointer to the datetime structure where the result of the conversion is stored
<> 144:ef7eb2e8f9f7 69 */
<> 144:ef7eb2e8f9f7 70 static void RTC_ConvertSecondsToDatetime(uint32_t seconds, rtc_datetime_t *datetime);
<> 144:ef7eb2e8f9f7 71
<> 144:ef7eb2e8f9f7 72 /*******************************************************************************
<> 144:ef7eb2e8f9f7 73 * Code
<> 144:ef7eb2e8f9f7 74 ******************************************************************************/
<> 144:ef7eb2e8f9f7 75 static bool RTC_CheckDatetimeFormat(const rtc_datetime_t *datetime)
<> 144:ef7eb2e8f9f7 76 {
<> 144:ef7eb2e8f9f7 77 /* Table of days in a month for a non leap year. First entry in the table is not used,
<> 144:ef7eb2e8f9f7 78 * valid months start from 1
<> 144:ef7eb2e8f9f7 79 */
<> 144:ef7eb2e8f9f7 80 uint8_t daysPerMonth[] = {0U, 31U, 28U, 31U, 30U, 31U, 30U, 31U, 31U, 30U, 31U, 30U, 31U};
<> 144:ef7eb2e8f9f7 81
<> 144:ef7eb2e8f9f7 82 /* Check year, month, hour, minute, seconds */
<> 144:ef7eb2e8f9f7 83 if ((datetime->year < YEAR_RANGE_START) || (datetime->year > YEAR_RANGE_END) || (datetime->month > 12U) ||
<> 144:ef7eb2e8f9f7 84 (datetime->month < 1U) || (datetime->hour >= 24U) || (datetime->minute >= 60U) || (datetime->second >= 60U))
<> 144:ef7eb2e8f9f7 85 {
<> 144:ef7eb2e8f9f7 86 /* If not correct then error*/
<> 144:ef7eb2e8f9f7 87 return false;
<> 144:ef7eb2e8f9f7 88 }
<> 144:ef7eb2e8f9f7 89
<> 144:ef7eb2e8f9f7 90 /* Adjust the days in February for a leap year */
<> 144:ef7eb2e8f9f7 91 if (!(datetime->year & 3U))
<> 144:ef7eb2e8f9f7 92 {
<> 144:ef7eb2e8f9f7 93 daysPerMonth[2] = 29U;
<> 144:ef7eb2e8f9f7 94 }
<> 144:ef7eb2e8f9f7 95
<> 144:ef7eb2e8f9f7 96 /* Check the validity of the day */
<> 144:ef7eb2e8f9f7 97 if (datetime->day > daysPerMonth[datetime->month])
<> 144:ef7eb2e8f9f7 98 {
<> 144:ef7eb2e8f9f7 99 return false;
<> 144:ef7eb2e8f9f7 100 }
<> 144:ef7eb2e8f9f7 101
<> 144:ef7eb2e8f9f7 102 return true;
<> 144:ef7eb2e8f9f7 103 }
<> 144:ef7eb2e8f9f7 104
<> 144:ef7eb2e8f9f7 105 static uint32_t RTC_ConvertDatetimeToSeconds(const rtc_datetime_t *datetime)
<> 144:ef7eb2e8f9f7 106 {
<> 144:ef7eb2e8f9f7 107 /* Number of days from begin of the non Leap-year*/
<> 144:ef7eb2e8f9f7 108 uint16_t monthDays[] = {0U, 0U, 31U, 59U, 90U, 120U, 151U, 181U, 212U, 243U, 273U, 304U, 334U};
<> 144:ef7eb2e8f9f7 109 uint32_t seconds;
<> 144:ef7eb2e8f9f7 110
<> 144:ef7eb2e8f9f7 111 /* Compute number of days from 1970 till given year*/
<> 144:ef7eb2e8f9f7 112 seconds = (datetime->year - 1970U) * DAYS_IN_A_YEAR;
<> 144:ef7eb2e8f9f7 113 /* Add leap year days */
<> 144:ef7eb2e8f9f7 114 seconds += ((datetime->year / 4) - (1970U / 4));
<> 144:ef7eb2e8f9f7 115 /* Add number of days till given month*/
<> 144:ef7eb2e8f9f7 116 seconds += monthDays[datetime->month];
<> 144:ef7eb2e8f9f7 117 /* Add days in given month. We subtract the current day as it is
<> 144:ef7eb2e8f9f7 118 * represented in the hours, minutes and seconds field*/
<> 144:ef7eb2e8f9f7 119 seconds += (datetime->day - 1);
<> 144:ef7eb2e8f9f7 120 /* For leap year if month less than or equal to Febraury, decrement day counter*/
<> 144:ef7eb2e8f9f7 121 if ((!(datetime->year & 3U)) && (datetime->month <= 2U))
<> 144:ef7eb2e8f9f7 122 {
<> 144:ef7eb2e8f9f7 123 seconds--;
<> 144:ef7eb2e8f9f7 124 }
<> 144:ef7eb2e8f9f7 125
<> 144:ef7eb2e8f9f7 126 seconds = (seconds * SECONDS_IN_A_DAY) + (datetime->hour * SECONDS_IN_A_HOUR) +
<> 144:ef7eb2e8f9f7 127 (datetime->minute * SECONDS_IN_A_MINUTE) + datetime->second;
<> 144:ef7eb2e8f9f7 128
<> 144:ef7eb2e8f9f7 129 return seconds;
<> 144:ef7eb2e8f9f7 130 }
<> 144:ef7eb2e8f9f7 131
<> 144:ef7eb2e8f9f7 132 static void RTC_ConvertSecondsToDatetime(uint32_t seconds, rtc_datetime_t *datetime)
<> 144:ef7eb2e8f9f7 133 {
<> 144:ef7eb2e8f9f7 134 uint32_t x;
<> 144:ef7eb2e8f9f7 135 uint32_t secondsRemaining, days;
<> 144:ef7eb2e8f9f7 136 uint16_t daysInYear;
<> 144:ef7eb2e8f9f7 137 /* Table of days in a month for a non leap year. First entry in the table is not used,
<> 144:ef7eb2e8f9f7 138 * valid months start from 1
<> 144:ef7eb2e8f9f7 139 */
<> 144:ef7eb2e8f9f7 140 uint8_t daysPerMonth[] = {0U, 31U, 28U, 31U, 30U, 31U, 30U, 31U, 31U, 30U, 31U, 30U, 31U};
<> 144:ef7eb2e8f9f7 141
<> 144:ef7eb2e8f9f7 142 /* Start with the seconds value that is passed in to be converted to date time format */
<> 144:ef7eb2e8f9f7 143 secondsRemaining = seconds;
<> 144:ef7eb2e8f9f7 144
<> 144:ef7eb2e8f9f7 145 /* Calcuate the number of days, we add 1 for the current day which is represented in the
<> 144:ef7eb2e8f9f7 146 * hours and seconds field
<> 144:ef7eb2e8f9f7 147 */
<> 144:ef7eb2e8f9f7 148 days = secondsRemaining / SECONDS_IN_A_DAY + 1;
<> 144:ef7eb2e8f9f7 149
<> 144:ef7eb2e8f9f7 150 /* Update seconds left*/
<> 144:ef7eb2e8f9f7 151 secondsRemaining = secondsRemaining % SECONDS_IN_A_DAY;
<> 144:ef7eb2e8f9f7 152
<> 144:ef7eb2e8f9f7 153 /* Calculate the datetime hour, minute and second fields */
<> 144:ef7eb2e8f9f7 154 datetime->hour = secondsRemaining / SECONDS_IN_A_HOUR;
<> 144:ef7eb2e8f9f7 155 secondsRemaining = secondsRemaining % SECONDS_IN_A_HOUR;
<> 144:ef7eb2e8f9f7 156 datetime->minute = secondsRemaining / 60U;
<> 144:ef7eb2e8f9f7 157 datetime->second = secondsRemaining % SECONDS_IN_A_MINUTE;
<> 144:ef7eb2e8f9f7 158
<> 144:ef7eb2e8f9f7 159 /* Calculate year */
<> 144:ef7eb2e8f9f7 160 daysInYear = DAYS_IN_A_YEAR;
<> 144:ef7eb2e8f9f7 161 datetime->year = YEAR_RANGE_START;
<> 144:ef7eb2e8f9f7 162 while (days > daysInYear)
<> 144:ef7eb2e8f9f7 163 {
<> 144:ef7eb2e8f9f7 164 /* Decrease day count by a year and increment year by 1 */
<> 144:ef7eb2e8f9f7 165 days -= daysInYear;
<> 144:ef7eb2e8f9f7 166 datetime->year++;
<> 144:ef7eb2e8f9f7 167
<> 144:ef7eb2e8f9f7 168 /* Adjust the number of days for a leap year */
<> 144:ef7eb2e8f9f7 169 if (datetime->year & 3U)
<> 144:ef7eb2e8f9f7 170 {
<> 144:ef7eb2e8f9f7 171 daysInYear = DAYS_IN_A_YEAR;
<> 144:ef7eb2e8f9f7 172 }
<> 144:ef7eb2e8f9f7 173 else
<> 144:ef7eb2e8f9f7 174 {
<> 144:ef7eb2e8f9f7 175 daysInYear = DAYS_IN_A_YEAR + 1;
<> 144:ef7eb2e8f9f7 176 }
<> 144:ef7eb2e8f9f7 177 }
<> 144:ef7eb2e8f9f7 178
<> 144:ef7eb2e8f9f7 179 /* Adjust the days in February for a leap year */
<> 144:ef7eb2e8f9f7 180 if (!(datetime->year & 3U))
<> 144:ef7eb2e8f9f7 181 {
<> 144:ef7eb2e8f9f7 182 daysPerMonth[2] = 29U;
<> 144:ef7eb2e8f9f7 183 }
<> 144:ef7eb2e8f9f7 184
<> 144:ef7eb2e8f9f7 185 for (x = 1U; x <= 12U; x++)
<> 144:ef7eb2e8f9f7 186 {
<> 144:ef7eb2e8f9f7 187 if (days <= daysPerMonth[x])
<> 144:ef7eb2e8f9f7 188 {
<> 144:ef7eb2e8f9f7 189 datetime->month = x;
<> 144:ef7eb2e8f9f7 190 break;
<> 144:ef7eb2e8f9f7 191 }
<> 144:ef7eb2e8f9f7 192 else
<> 144:ef7eb2e8f9f7 193 {
<> 144:ef7eb2e8f9f7 194 days -= daysPerMonth[x];
<> 144:ef7eb2e8f9f7 195 }
<> 144:ef7eb2e8f9f7 196 }
<> 144:ef7eb2e8f9f7 197
<> 144:ef7eb2e8f9f7 198 datetime->day = days;
<> 144:ef7eb2e8f9f7 199 }
<> 144:ef7eb2e8f9f7 200
<> 144:ef7eb2e8f9f7 201 void RTC_Init(RTC_Type *base, const rtc_config_t *config)
<> 144:ef7eb2e8f9f7 202 {
<> 144:ef7eb2e8f9f7 203 assert(config);
<> 144:ef7eb2e8f9f7 204
<> 144:ef7eb2e8f9f7 205 uint32_t reg;
<> 144:ef7eb2e8f9f7 206
<> 144:ef7eb2e8f9f7 207 CLOCK_EnableClock(kCLOCK_Rtc0);
<> 144:ef7eb2e8f9f7 208
<> 144:ef7eb2e8f9f7 209 /* Issue a software reset if timer is invalid */
<> 144:ef7eb2e8f9f7 210 if (RTC_GetStatusFlags(RTC) & kRTC_TimeInvalidFlag)
<> 144:ef7eb2e8f9f7 211 {
<> 144:ef7eb2e8f9f7 212 RTC_Reset(RTC);
<> 144:ef7eb2e8f9f7 213 }
<> 144:ef7eb2e8f9f7 214
<> 144:ef7eb2e8f9f7 215 reg = base->CR;
<> 144:ef7eb2e8f9f7 216 /* Setup the update mode and supervisor access mode */
<> 144:ef7eb2e8f9f7 217 reg &= ~(RTC_CR_UM_MASK | RTC_CR_SUP_MASK);
<> 144:ef7eb2e8f9f7 218 reg |= RTC_CR_UM(config->updateMode) | RTC_CR_SUP(config->supervisorAccess);
<> 144:ef7eb2e8f9f7 219 #if defined(FSL_FEATURE_RTC_HAS_WAKEUP_PIN) && FSL_FEATURE_RTC_HAS_WAKEUP_PIN
<> 144:ef7eb2e8f9f7 220 /* Setup the wakeup pin select */
<> 144:ef7eb2e8f9f7 221 reg &= ~(RTC_CR_WPS_MASK);
<> 144:ef7eb2e8f9f7 222 reg |= RTC_CR_WPS(config->wakeupSelect);
<> 144:ef7eb2e8f9f7 223 #endif /* FSL_FEATURE_RTC_HAS_WAKEUP_PIN */
<> 144:ef7eb2e8f9f7 224 base->CR = reg;
<> 144:ef7eb2e8f9f7 225
<> 144:ef7eb2e8f9f7 226 /* Configure the RTC time compensation register */
<> 144:ef7eb2e8f9f7 227 base->TCR = (RTC_TCR_CIR(config->compensationInterval) | RTC_TCR_TCR(config->compensationTime));
<> 144:ef7eb2e8f9f7 228 }
<> 144:ef7eb2e8f9f7 229
<> 144:ef7eb2e8f9f7 230 void RTC_GetDefaultConfig(rtc_config_t *config)
<> 144:ef7eb2e8f9f7 231 {
<> 144:ef7eb2e8f9f7 232 assert(config);
<> 144:ef7eb2e8f9f7 233
<> 144:ef7eb2e8f9f7 234 /* Wakeup pin will assert if the RTC interrupt asserts or if the wakeup pin is turned on */
<> 144:ef7eb2e8f9f7 235 config->wakeupSelect = false;
<> 144:ef7eb2e8f9f7 236 /* Registers cannot be written when locked */
<> 144:ef7eb2e8f9f7 237 config->updateMode = false;
<> 144:ef7eb2e8f9f7 238 /* Non-supervisor mode write accesses are not supported and will generate a bus error */
<> 144:ef7eb2e8f9f7 239 config->supervisorAccess = false;
<> 144:ef7eb2e8f9f7 240 /* Compensation interval used by the crystal compensation logic */
<> 144:ef7eb2e8f9f7 241 config->compensationInterval = 0;
<> 144:ef7eb2e8f9f7 242 /* Compensation time used by the crystal compensation logic */
<> 144:ef7eb2e8f9f7 243 config->compensationTime = 0;
<> 144:ef7eb2e8f9f7 244 }
<> 144:ef7eb2e8f9f7 245
<> 144:ef7eb2e8f9f7 246 status_t RTC_SetDatetime(RTC_Type *base, const rtc_datetime_t *datetime)
<> 144:ef7eb2e8f9f7 247 {
<> 144:ef7eb2e8f9f7 248 assert(datetime);
<> 144:ef7eb2e8f9f7 249
<> 144:ef7eb2e8f9f7 250 /* Return error if the time provided is not valid */
<> 144:ef7eb2e8f9f7 251 if (!(RTC_CheckDatetimeFormat(datetime)))
<> 144:ef7eb2e8f9f7 252 {
<> 144:ef7eb2e8f9f7 253 return kStatus_InvalidArgument;
<> 144:ef7eb2e8f9f7 254 }
<> 144:ef7eb2e8f9f7 255
<> 144:ef7eb2e8f9f7 256 /* Set time in seconds */
<> 144:ef7eb2e8f9f7 257 base->TSR = RTC_ConvertDatetimeToSeconds(datetime);
<> 144:ef7eb2e8f9f7 258
<> 144:ef7eb2e8f9f7 259 return kStatus_Success;
<> 144:ef7eb2e8f9f7 260 }
<> 144:ef7eb2e8f9f7 261
<> 144:ef7eb2e8f9f7 262 void RTC_GetDatetime(RTC_Type *base, rtc_datetime_t *datetime)
<> 144:ef7eb2e8f9f7 263 {
<> 144:ef7eb2e8f9f7 264 assert(datetime);
<> 144:ef7eb2e8f9f7 265
<> 144:ef7eb2e8f9f7 266 uint32_t seconds = 0;
<> 144:ef7eb2e8f9f7 267
<> 144:ef7eb2e8f9f7 268 seconds = base->TSR;
<> 144:ef7eb2e8f9f7 269 RTC_ConvertSecondsToDatetime(seconds, datetime);
<> 144:ef7eb2e8f9f7 270 }
<> 144:ef7eb2e8f9f7 271
<> 144:ef7eb2e8f9f7 272 status_t RTC_SetAlarm(RTC_Type *base, const rtc_datetime_t *alarmTime)
<> 144:ef7eb2e8f9f7 273 {
<> 144:ef7eb2e8f9f7 274 assert(alarmTime);
<> 144:ef7eb2e8f9f7 275
<> 144:ef7eb2e8f9f7 276 uint32_t alarmSeconds = 0;
<> 144:ef7eb2e8f9f7 277 uint32_t currSeconds = 0;
<> 144:ef7eb2e8f9f7 278
<> 144:ef7eb2e8f9f7 279 /* Return error if the alarm time provided is not valid */
<> 144:ef7eb2e8f9f7 280 if (!(RTC_CheckDatetimeFormat(alarmTime)))
<> 144:ef7eb2e8f9f7 281 {
<> 144:ef7eb2e8f9f7 282 return kStatus_InvalidArgument;
<> 144:ef7eb2e8f9f7 283 }
<> 144:ef7eb2e8f9f7 284
<> 144:ef7eb2e8f9f7 285 alarmSeconds = RTC_ConvertDatetimeToSeconds(alarmTime);
<> 144:ef7eb2e8f9f7 286
<> 144:ef7eb2e8f9f7 287 /* Get the current time */
<> 144:ef7eb2e8f9f7 288 currSeconds = base->TSR;
<> 144:ef7eb2e8f9f7 289
<> 144:ef7eb2e8f9f7 290 /* Return error if the alarm time has passed */
<> 144:ef7eb2e8f9f7 291 if (alarmSeconds < currSeconds)
<> 144:ef7eb2e8f9f7 292 {
<> 144:ef7eb2e8f9f7 293 return kStatus_Fail;
<> 144:ef7eb2e8f9f7 294 }
<> 144:ef7eb2e8f9f7 295
<> 144:ef7eb2e8f9f7 296 /* Set alarm in seconds*/
<> 144:ef7eb2e8f9f7 297 base->TAR = alarmSeconds;
<> 144:ef7eb2e8f9f7 298
<> 144:ef7eb2e8f9f7 299 return kStatus_Success;
<> 144:ef7eb2e8f9f7 300 }
<> 144:ef7eb2e8f9f7 301
<> 144:ef7eb2e8f9f7 302 void RTC_GetAlarm(RTC_Type *base, rtc_datetime_t *datetime)
<> 144:ef7eb2e8f9f7 303 {
<> 144:ef7eb2e8f9f7 304 assert(datetime);
<> 144:ef7eb2e8f9f7 305
<> 144:ef7eb2e8f9f7 306 uint32_t alarmSeconds = 0;
<> 144:ef7eb2e8f9f7 307
<> 144:ef7eb2e8f9f7 308 /* Get alarm in seconds */
<> 144:ef7eb2e8f9f7 309 alarmSeconds = base->TAR;
<> 144:ef7eb2e8f9f7 310
<> 144:ef7eb2e8f9f7 311 RTC_ConvertSecondsToDatetime(alarmSeconds, datetime);
<> 144:ef7eb2e8f9f7 312 }
<> 144:ef7eb2e8f9f7 313
<> 144:ef7eb2e8f9f7 314 void RTC_ClearStatusFlags(RTC_Type *base, uint32_t mask)
<> 144:ef7eb2e8f9f7 315 {
<> 144:ef7eb2e8f9f7 316 /* The alarm flag is cleared by writing to the TAR register */
<> 144:ef7eb2e8f9f7 317 if (mask & kRTC_AlarmFlag)
<> 144:ef7eb2e8f9f7 318 {
<> 144:ef7eb2e8f9f7 319 base->TAR = 0U;
<> 144:ef7eb2e8f9f7 320 }
<> 144:ef7eb2e8f9f7 321
<> 144:ef7eb2e8f9f7 322 /* The timer overflow flag is cleared by initializing the TSR register.
<> 144:ef7eb2e8f9f7 323 * The time counter should be disabled for this write to be successful
<> 144:ef7eb2e8f9f7 324 */
<> 144:ef7eb2e8f9f7 325 if (mask & kRTC_TimeOverflowFlag)
<> 144:ef7eb2e8f9f7 326 {
<> 144:ef7eb2e8f9f7 327 base->TSR = 1U;
<> 144:ef7eb2e8f9f7 328 }
<> 144:ef7eb2e8f9f7 329
<> 144:ef7eb2e8f9f7 330 /* The timer overflow flag is cleared by initializing the TSR register.
<> 144:ef7eb2e8f9f7 331 * The time counter should be disabled for this write to be successful
<> 144:ef7eb2e8f9f7 332 */
<> 144:ef7eb2e8f9f7 333 if (mask & kRTC_TimeInvalidFlag)
<> 144:ef7eb2e8f9f7 334 {
<> 144:ef7eb2e8f9f7 335 base->TSR = 1U;
<> 144:ef7eb2e8f9f7 336 }
<> 144:ef7eb2e8f9f7 337 }
<> 144:ef7eb2e8f9f7 338
<> 144:ef7eb2e8f9f7 339 #if defined(FSL_FEATURE_RTC_HAS_MONOTONIC) && (FSL_FEATURE_RTC_HAS_MONOTONIC)
<> 144:ef7eb2e8f9f7 340
<> 144:ef7eb2e8f9f7 341 void RTC_GetMonotonicCounter(RTC_Type *base, uint64_t *counter)
<> 144:ef7eb2e8f9f7 342 {
<> 144:ef7eb2e8f9f7 343 *counter = (((uint64_t)base->MCHR << 32) | ((uint64_t)base->MCLR));
<> 144:ef7eb2e8f9f7 344 }
<> 144:ef7eb2e8f9f7 345
<> 144:ef7eb2e8f9f7 346 void RTC_SetMonotonicCounter(RTC_Type *base, uint64_t counter)
<> 144:ef7eb2e8f9f7 347 {
<> 144:ef7eb2e8f9f7 348 /* Prepare to initialize the register with the new value written */
<> 144:ef7eb2e8f9f7 349 base->MER &= ~RTC_MER_MCE_MASK;
<> 144:ef7eb2e8f9f7 350
<> 144:ef7eb2e8f9f7 351 base->MCHR = (uint32_t)((counter) >> 32);
<> 144:ef7eb2e8f9f7 352 base->MCLR = (uint32_t)(counter);
<> 144:ef7eb2e8f9f7 353 }
<> 144:ef7eb2e8f9f7 354
<> 144:ef7eb2e8f9f7 355 status_t RTC_IncrementMonotonicCounter(RTC_Type *base)
<> 144:ef7eb2e8f9f7 356 {
<> 144:ef7eb2e8f9f7 357 if (base->SR & (RTC_SR_MOF_MASK | RTC_SR_TIF_MASK))
<> 144:ef7eb2e8f9f7 358 {
<> 144:ef7eb2e8f9f7 359 return kStatus_Fail;
<> 144:ef7eb2e8f9f7 360 }
<> 144:ef7eb2e8f9f7 361
<> 144:ef7eb2e8f9f7 362 /* Prepare to switch to increment mode */
<> 144:ef7eb2e8f9f7 363 base->MER |= RTC_MER_MCE_MASK;
<> 144:ef7eb2e8f9f7 364 /* Write anything so the counter increments*/
<> 144:ef7eb2e8f9f7 365 base->MCLR = 1U;
<> 144:ef7eb2e8f9f7 366
<> 144:ef7eb2e8f9f7 367 return kStatus_Success;
<> 144:ef7eb2e8f9f7 368 }
<> 144:ef7eb2e8f9f7 369
<> 144:ef7eb2e8f9f7 370 #endif /* FSL_FEATURE_RTC_HAS_MONOTONIC */