EL4121 Embedded System / mbed-os

mbed-os

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targets/TARGET_STM/rtc_api.c@0:b74591d5ab33, 2017-12-11 (annotated)

Committer:
be_bryan
Date:
Mon Dec 11 17:54:04 2017 +0000
Revision:
0:b74591d5ab33
motor ++

Who changed what in which revision?

UserRevisionLine numberNew contents of line
be_bryan 0:b74591d5ab33 1 /* mbed Microcontroller Library
be_bryan 0:b74591d5ab33 2 *******************************************************************************
be_bryan 0:b74591d5ab33 3 * Copyright (c) 2016, STMicroelectronics
be_bryan 0:b74591d5ab33 4 * All rights reserved.
be_bryan 0:b74591d5ab33 5 *
be_bryan 0:b74591d5ab33 6 * Redistribution and use in source and binary forms, with or without
be_bryan 0:b74591d5ab33 7 * modification, are permitted provided that the following conditions are met:
be_bryan 0:b74591d5ab33 8 *
be_bryan 0:b74591d5ab33 9 * 1. Redistributions of source code must retain the above copyright notice,
be_bryan 0:b74591d5ab33 10 * this list of conditions and the following disclaimer.
be_bryan 0:b74591d5ab33 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
be_bryan 0:b74591d5ab33 12 * this list of conditions and the following disclaimer in the documentation
be_bryan 0:b74591d5ab33 13 * and/or other materials provided with the distribution.
be_bryan 0:b74591d5ab33 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
be_bryan 0:b74591d5ab33 15 * may be used to endorse or promote products derived from this software
be_bryan 0:b74591d5ab33 16 * without specific prior written permission.
be_bryan 0:b74591d5ab33 17 *
be_bryan 0:b74591d5ab33 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
be_bryan 0:b74591d5ab33 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
be_bryan 0:b74591d5ab33 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
be_bryan 0:b74591d5ab33 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
be_bryan 0:b74591d5ab33 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
be_bryan 0:b74591d5ab33 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
be_bryan 0:b74591d5ab33 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
be_bryan 0:b74591d5ab33 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
be_bryan 0:b74591d5ab33 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
be_bryan 0:b74591d5ab33 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
be_bryan 0:b74591d5ab33 28 *******************************************************************************
be_bryan 0:b74591d5ab33 29 */
be_bryan 0:b74591d5ab33 30 #if DEVICE_RTC
be_bryan 0:b74591d5ab33 31
be_bryan 0:b74591d5ab33 32 #include "rtc_api.h"
be_bryan 0:b74591d5ab33 33 #include "rtc_api_hal.h"
be_bryan 0:b74591d5ab33 34 #include "mbed_error.h"
be_bryan 0:b74591d5ab33 35 #include "mbed_mktime.h"
be_bryan 0:b74591d5ab33 36
be_bryan 0:b74591d5ab33 37 static RTC_HandleTypeDef RtcHandle;
be_bryan 0:b74591d5ab33 38
be_bryan 0:b74591d5ab33 39 #if RTC_LSI
be_bryan 0:b74591d5ab33 40 #define RTC_CLOCK LSI_VALUE
be_bryan 0:b74591d5ab33 41 #else
be_bryan 0:b74591d5ab33 42 #define RTC_CLOCK LSE_VALUE
be_bryan 0:b74591d5ab33 43 #endif
be_bryan 0:b74591d5ab33 44
be_bryan 0:b74591d5ab33 45 #if DEVICE_LOWPOWERTIMER
be_bryan 0:b74591d5ab33 46 #define RTC_ASYNCH_PREDIV ((RTC_CLOCK - 1) / 0x8000)
be_bryan 0:b74591d5ab33 47 #define RTC_SYNCH_PREDIV (RTC_CLOCK / (RTC_ASYNCH_PREDIV + 1) - 1)
be_bryan 0:b74591d5ab33 48 #else
be_bryan 0:b74591d5ab33 49 #define RTC_ASYNCH_PREDIV (0x007F)
be_bryan 0:b74591d5ab33 50 #define RTC_SYNCH_PREDIV (RTC_CLOCK / (RTC_ASYNCH_PREDIV + 1) - 1)
be_bryan 0:b74591d5ab33 51 #endif
be_bryan 0:b74591d5ab33 52
be_bryan 0:b74591d5ab33 53 #if DEVICE_LOWPOWERTIMER
be_bryan 0:b74591d5ab33 54 static void (*irq_handler)(void);
be_bryan 0:b74591d5ab33 55 static void RTC_IRQHandler(void);
be_bryan 0:b74591d5ab33 56 #endif
be_bryan 0:b74591d5ab33 57
be_bryan 0:b74591d5ab33 58 void rtc_init(void)
be_bryan 0:b74591d5ab33 59 {
be_bryan 0:b74591d5ab33 60 RCC_OscInitTypeDef RCC_OscInitStruct = {0};
be_bryan 0:b74591d5ab33 61 RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
be_bryan 0:b74591d5ab33 62
be_bryan 0:b74591d5ab33 63 // Enable access to Backup domain
be_bryan 0:b74591d5ab33 64 HAL_PWR_EnableBkUpAccess();
be_bryan 0:b74591d5ab33 65
be_bryan 0:b74591d5ab33 66 RtcHandle.Instance = RTC;
be_bryan 0:b74591d5ab33 67 RtcHandle.State = HAL_RTC_STATE_RESET;
be_bryan 0:b74591d5ab33 68
be_bryan 0:b74591d5ab33 69 #if !RTC_LSI
be_bryan 0:b74591d5ab33 70 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
be_bryan 0:b74591d5ab33 71 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
be_bryan 0:b74591d5ab33 72 RCC_OscInitStruct.LSEState = RCC_LSE_ON;
be_bryan 0:b74591d5ab33 73 RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
be_bryan 0:b74591d5ab33 74
be_bryan 0:b74591d5ab33 75 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) == HAL_OK) {
be_bryan 0:b74591d5ab33 76 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSE);
be_bryan 0:b74591d5ab33 77 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSE);
be_bryan 0:b74591d5ab33 78 } else {
be_bryan 0:b74591d5ab33 79 error("Cannot initialize RTC with LSE\n");
be_bryan 0:b74591d5ab33 80 }
be_bryan 0:b74591d5ab33 81
be_bryan 0:b74591d5ab33 82 PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
be_bryan 0:b74591d5ab33 83 PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
be_bryan 0:b74591d5ab33 84 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) {
be_bryan 0:b74591d5ab33 85 error("PeriphClkInitStruct RTC failed with LSE\n");
be_bryan 0:b74591d5ab33 86 }
be_bryan 0:b74591d5ab33 87 #else /* !RTC_LSI */
be_bryan 0:b74591d5ab33 88 __HAL_RCC_PWR_CLK_ENABLE();
be_bryan 0:b74591d5ab33 89
be_bryan 0:b74591d5ab33 90 // Reset Backup domain
be_bryan 0:b74591d5ab33 91 __HAL_RCC_BACKUPRESET_FORCE();
be_bryan 0:b74591d5ab33 92 __HAL_RCC_BACKUPRESET_RELEASE();
be_bryan 0:b74591d5ab33 93
be_bryan 0:b74591d5ab33 94 // Enable LSI clock
be_bryan 0:b74591d5ab33 95 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI;
be_bryan 0:b74591d5ab33 96 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
be_bryan 0:b74591d5ab33 97 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
be_bryan 0:b74591d5ab33 98 RCC_OscInitStruct.LSIState = RCC_LSI_ON;
be_bryan 0:b74591d5ab33 99 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
be_bryan 0:b74591d5ab33 100 error("Cannot initialize RTC with LSI\n");
be_bryan 0:b74591d5ab33 101 }
be_bryan 0:b74591d5ab33 102
be_bryan 0:b74591d5ab33 103 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSI);
be_bryan 0:b74591d5ab33 104 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
be_bryan 0:b74591d5ab33 105
be_bryan 0:b74591d5ab33 106 PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
be_bryan 0:b74591d5ab33 107 PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
be_bryan 0:b74591d5ab33 108 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) {
be_bryan 0:b74591d5ab33 109 error("PeriphClkInitStruct RTC failed with LSI\n");
be_bryan 0:b74591d5ab33 110 }
be_bryan 0:b74591d5ab33 111 #endif /* !RTC_LSI */
be_bryan 0:b74591d5ab33 112
be_bryan 0:b74591d5ab33 113 // Enable RTC
be_bryan 0:b74591d5ab33 114 __HAL_RCC_RTC_ENABLE();
be_bryan 0:b74591d5ab33 115
be_bryan 0:b74591d5ab33 116 #if TARGET_STM32F1
be_bryan 0:b74591d5ab33 117 RtcHandle.Init.AsynchPrediv = RTC_AUTO_1_SECOND;
be_bryan 0:b74591d5ab33 118 #else /* TARGET_STM32F1 */
be_bryan 0:b74591d5ab33 119 RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
be_bryan 0:b74591d5ab33 120 RtcHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
be_bryan 0:b74591d5ab33 121 RtcHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
be_bryan 0:b74591d5ab33 122 RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
be_bryan 0:b74591d5ab33 123 RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
be_bryan 0:b74591d5ab33 124 RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
be_bryan 0:b74591d5ab33 125 #endif /* TARGET_STM32F1 */
be_bryan 0:b74591d5ab33 126
be_bryan 0:b74591d5ab33 127 if (HAL_RTC_Init(&RtcHandle) != HAL_OK) {
be_bryan 0:b74591d5ab33 128 error("RTC error: RTC initialization failed.");
be_bryan 0:b74591d5ab33 129 }
be_bryan 0:b74591d5ab33 130
be_bryan 0:b74591d5ab33 131 #if DEVICE_LOWPOWERTIMER
be_bryan 0:b74591d5ab33 132
be_bryan 0:b74591d5ab33 133 #if !RTC_LSI
be_bryan 0:b74591d5ab33 134 if (!rtc_isenabled())
be_bryan 0:b74591d5ab33 135 #endif /* !RTC_LSI */
be_bryan 0:b74591d5ab33 136 {
be_bryan 0:b74591d5ab33 137 rtc_write(0);
be_bryan 0:b74591d5ab33 138 }
be_bryan 0:b74591d5ab33 139
be_bryan 0:b74591d5ab33 140 NVIC_ClearPendingIRQ(RTC_WKUP_IRQn);
be_bryan 0:b74591d5ab33 141 NVIC_DisableIRQ(RTC_WKUP_IRQn);
be_bryan 0:b74591d5ab33 142 NVIC_SetVector(RTC_WKUP_IRQn, (uint32_t)RTC_IRQHandler);
be_bryan 0:b74591d5ab33 143 NVIC_EnableIRQ(RTC_WKUP_IRQn);
be_bryan 0:b74591d5ab33 144
be_bryan 0:b74591d5ab33 145 #endif /* DEVICE_LOWPOWERTIMER */
be_bryan 0:b74591d5ab33 146 }
be_bryan 0:b74591d5ab33 147
be_bryan 0:b74591d5ab33 148 void rtc_free(void)
be_bryan 0:b74591d5ab33 149 {
be_bryan 0:b74591d5ab33 150 #if RTC_LSI
be_bryan 0:b74591d5ab33 151 // Enable Power clock
be_bryan 0:b74591d5ab33 152 __HAL_RCC_PWR_CLK_ENABLE();
be_bryan 0:b74591d5ab33 153
be_bryan 0:b74591d5ab33 154 // Enable access to Backup domain
be_bryan 0:b74591d5ab33 155 HAL_PWR_EnableBkUpAccess();
be_bryan 0:b74591d5ab33 156
be_bryan 0:b74591d5ab33 157 // Reset Backup domain
be_bryan 0:b74591d5ab33 158 __HAL_RCC_BACKUPRESET_FORCE();
be_bryan 0:b74591d5ab33 159 __HAL_RCC_BACKUPRESET_RELEASE();
be_bryan 0:b74591d5ab33 160
be_bryan 0:b74591d5ab33 161 // Disable access to Backup domain
be_bryan 0:b74591d5ab33 162 HAL_PWR_DisableBkUpAccess();
be_bryan 0:b74591d5ab33 163 #endif
be_bryan 0:b74591d5ab33 164
be_bryan 0:b74591d5ab33 165 // Disable LSI and LSE clocks
be_bryan 0:b74591d5ab33 166 RCC_OscInitTypeDef RCC_OscInitStruct = {0};
be_bryan 0:b74591d5ab33 167 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
be_bryan 0:b74591d5ab33 168 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
be_bryan 0:b74591d5ab33 169 RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
be_bryan 0:b74591d5ab33 170 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
be_bryan 0:b74591d5ab33 171 HAL_RCC_OscConfig(&RCC_OscInitStruct);
be_bryan 0:b74591d5ab33 172 }
be_bryan 0:b74591d5ab33 173
be_bryan 0:b74591d5ab33 174 /*
be_bryan 0:b74591d5ab33 175 ST RTC_DateTypeDef structure
be_bryan 0:b74591d5ab33 176 WeekDay 1=monday, 2=tuesday, ..., 7=sunday
be_bryan 0:b74591d5ab33 177 Month 0x1=january, 0x2=february, ..., 0x12=december
be_bryan 0:b74591d5ab33 178 Date day of the month 1-31
be_bryan 0:b74591d5ab33 179 Year year 0-99
be_bryan 0:b74591d5ab33 180
be_bryan 0:b74591d5ab33 181 ST RTC_TimeTypeDef structure
be_bryan 0:b74591d5ab33 182 Hours 0-12 if the RTC_HourFormat_12 is selected during init
be_bryan 0:b74591d5ab33 183 0-23 if the RTC_HourFormat_24 is selected during init
be_bryan 0:b74591d5ab33 184 Minutes 0-59
be_bryan 0:b74591d5ab33 185 Seconds 0-59
be_bryan 0:b74591d5ab33 186 TimeFormat RTC_HOURFORMAT12_AM/RTC_HOURFORMAT12_PM
be_bryan 0:b74591d5ab33 187 SubSeconds time unit range between [0-1] Second with [1 Sec / SecondFraction +1] granularity
be_bryan 0:b74591d5ab33 188 SecondFraction range or granularity of Sub Second register content corresponding to Synchronous pre-scaler factor value (PREDIV_S)
be_bryan 0:b74591d5ab33 189 DayLightSaving RTC_DAYLIGHTSAVING_SUB1H/RTC_DAYLIGHTSAVING_ADD1H/RTC_DAYLIGHTSAVING_NONE
be_bryan 0:b74591d5ab33 190 StoreOperation RTC_STOREOPERATION_RESET/RTC_STOREOPERATION_SET
be_bryan 0:b74591d5ab33 191
be_bryan 0:b74591d5ab33 192 struct tm
be_bryan 0:b74591d5ab33 193 tm_sec seconds after the minute 0-61
be_bryan 0:b74591d5ab33 194 tm_min minutes after the hour 0-59
be_bryan 0:b74591d5ab33 195 tm_hour hours since midnight 0-23
be_bryan 0:b74591d5ab33 196 tm_mday day of the month 1-31
be_bryan 0:b74591d5ab33 197 tm_mon months since January 0-11
be_bryan 0:b74591d5ab33 198 tm_year years since 1900
be_bryan 0:b74591d5ab33 199 tm_wday days since Sunday 0-6
be_bryan 0:b74591d5ab33 200 tm_yday days since January 1 0-365
be_bryan 0:b74591d5ab33 201 tm_isdst Daylight Saving Time flag
be_bryan 0:b74591d5ab33 202 */
be_bryan 0:b74591d5ab33 203
be_bryan 0:b74591d5ab33 204 /*
be_bryan 0:b74591d5ab33 205 Information about STM32F0, STM32F2, STM32F3, STM32F4, STM32F7, STM32L0, STM32L1, STM32L4:
be_bryan 0:b74591d5ab33 206 BCD format is used to store the date in the RTC. The year is store on 2 * 4 bits.
be_bryan 0:b74591d5ab33 207 Because the first year is reserved to see if the RTC is init, the supposed range is 01-99.
be_bryan 0:b74591d5ab33 208 1st point is to cover the standard range from 1970 to 2038 (limited by the 32 bits of time_t).
be_bryan 0:b74591d5ab33 209 2nd point is to keep the year 1970 and the leap years synchronized.
be_bryan 0:b74591d5ab33 210
be_bryan 0:b74591d5ab33 211 So by moving it 68 years forward from 1970, it become 1969-2067 which include 1970-2038.
be_bryan 0:b74591d5ab33 212 68 is also a multiple of 4 so it let the leap year synchronized.
be_bryan 0:b74591d5ab33 213
be_bryan 0:b74591d5ab33 214 Information about STM32F1:
be_bryan 0:b74591d5ab33 215 32bit register is used (no BCD format) for the seconds and a software structure to store dates.
be_bryan 0:b74591d5ab33 216 It is then not a problem to not use shifts.
be_bryan 0:b74591d5ab33 217 */
be_bryan 0:b74591d5ab33 218
be_bryan 0:b74591d5ab33 219 time_t rtc_read(void)
be_bryan 0:b74591d5ab33 220 {
be_bryan 0:b74591d5ab33 221 RTC_DateTypeDef dateStruct = {0};
be_bryan 0:b74591d5ab33 222 RTC_TimeTypeDef timeStruct = {0};
be_bryan 0:b74591d5ab33 223 struct tm timeinfo;
be_bryan 0:b74591d5ab33 224
be_bryan 0:b74591d5ab33 225 RtcHandle.Instance = RTC;
be_bryan 0:b74591d5ab33 226
be_bryan 0:b74591d5ab33 227 // Read actual date and time
be_bryan 0:b74591d5ab33 228 // Warning: the time must be read first!
be_bryan 0:b74591d5ab33 229 HAL_RTC_GetTime(&RtcHandle, &timeStruct, RTC_FORMAT_BIN);
be_bryan 0:b74591d5ab33 230 HAL_RTC_GetDate(&RtcHandle, &dateStruct, RTC_FORMAT_BIN);
be_bryan 0:b74591d5ab33 231
be_bryan 0:b74591d5ab33 232 // Setup a tm structure based on the RTC
be_bryan 0:b74591d5ab33 233 /* tm_wday information is ignored by mktime */
be_bryan 0:b74591d5ab33 234 timeinfo.tm_mon = dateStruct.Month - 1;
be_bryan 0:b74591d5ab33 235 timeinfo.tm_mday = dateStruct.Date;
be_bryan 0:b74591d5ab33 236 timeinfo.tm_year = dateStruct.Year + 68;
be_bryan 0:b74591d5ab33 237 timeinfo.tm_hour = timeStruct.Hours;
be_bryan 0:b74591d5ab33 238 timeinfo.tm_min = timeStruct.Minutes;
be_bryan 0:b74591d5ab33 239 timeinfo.tm_sec = timeStruct.Seconds;
be_bryan 0:b74591d5ab33 240 // Daylight Saving Time information is not available
be_bryan 0:b74591d5ab33 241 timeinfo.tm_isdst = -1;
be_bryan 0:b74591d5ab33 242
be_bryan 0:b74591d5ab33 243 // Convert to timestamp
be_bryan 0:b74591d5ab33 244 time_t t = _rtc_mktime(&timeinfo);
be_bryan 0:b74591d5ab33 245
be_bryan 0:b74591d5ab33 246 return t;
be_bryan 0:b74591d5ab33 247 }
be_bryan 0:b74591d5ab33 248
be_bryan 0:b74591d5ab33 249 void rtc_write(time_t t)
be_bryan 0:b74591d5ab33 250 {
be_bryan 0:b74591d5ab33 251 RTC_DateTypeDef dateStruct = {0};
be_bryan 0:b74591d5ab33 252 RTC_TimeTypeDef timeStruct = {0};
be_bryan 0:b74591d5ab33 253
be_bryan 0:b74591d5ab33 254 RtcHandle.Instance = RTC;
be_bryan 0:b74591d5ab33 255
be_bryan 0:b74591d5ab33 256 // Convert the time into a tm
be_bryan 0:b74591d5ab33 257 struct tm timeinfo;
be_bryan 0:b74591d5ab33 258 if (_rtc_localtime(t, &timeinfo) == false) {
be_bryan 0:b74591d5ab33 259 return;
be_bryan 0:b74591d5ab33 260 }
be_bryan 0:b74591d5ab33 261
be_bryan 0:b74591d5ab33 262 // Fill RTC structures
be_bryan 0:b74591d5ab33 263 if (timeinfo.tm_wday == 0) {
be_bryan 0:b74591d5ab33 264 dateStruct.WeekDay = 7;
be_bryan 0:b74591d5ab33 265 } else {
be_bryan 0:b74591d5ab33 266 dateStruct.WeekDay = timeinfo.tm_wday;
be_bryan 0:b74591d5ab33 267 }
be_bryan 0:b74591d5ab33 268 dateStruct.Month = timeinfo.tm_mon + 1;
be_bryan 0:b74591d5ab33 269 dateStruct.Date = timeinfo.tm_mday;
be_bryan 0:b74591d5ab33 270 dateStruct.Year = timeinfo.tm_year - 68;
be_bryan 0:b74591d5ab33 271 timeStruct.Hours = timeinfo.tm_hour;
be_bryan 0:b74591d5ab33 272 timeStruct.Minutes = timeinfo.tm_min;
be_bryan 0:b74591d5ab33 273 timeStruct.Seconds = timeinfo.tm_sec;
be_bryan 0:b74591d5ab33 274
be_bryan 0:b74591d5ab33 275 #if !(TARGET_STM32F1)
be_bryan 0:b74591d5ab33 276 timeStruct.TimeFormat = RTC_HOURFORMAT_24;
be_bryan 0:b74591d5ab33 277 timeStruct.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
be_bryan 0:b74591d5ab33 278 timeStruct.StoreOperation = RTC_STOREOPERATION_RESET;
be_bryan 0:b74591d5ab33 279 #endif /* TARGET_STM32F1 */
be_bryan 0:b74591d5ab33 280
be_bryan 0:b74591d5ab33 281 // Change the RTC current date/time
be_bryan 0:b74591d5ab33 282 HAL_RTC_SetDate(&RtcHandle, &dateStruct, RTC_FORMAT_BIN);
be_bryan 0:b74591d5ab33 283 HAL_RTC_SetTime(&RtcHandle, &timeStruct, RTC_FORMAT_BIN);
be_bryan 0:b74591d5ab33 284 }
be_bryan 0:b74591d5ab33 285
be_bryan 0:b74591d5ab33 286 int rtc_isenabled(void)
be_bryan 0:b74591d5ab33 287 {
be_bryan 0:b74591d5ab33 288 #if !(TARGET_STM32F1)
be_bryan 0:b74591d5ab33 289 return ( ((RTC->ISR & RTC_ISR_INITS) == RTC_ISR_INITS) && ((RTC->ISR & RTC_ISR_RSF) == RTC_ISR_RSF) );
be_bryan 0:b74591d5ab33 290 #else /* TARGET_STM32F1 */
be_bryan 0:b74591d5ab33 291 return ((RTC->CRL & RTC_CRL_RSF) == RTC_CRL_RSF);
be_bryan 0:b74591d5ab33 292 #endif /* TARGET_STM32F1 */
be_bryan 0:b74591d5ab33 293 }
be_bryan 0:b74591d5ab33 294
be_bryan 0:b74591d5ab33 295 #if DEVICE_LOWPOWERTIMER
be_bryan 0:b74591d5ab33 296
be_bryan 0:b74591d5ab33 297 static void RTC_IRQHandler(void)
be_bryan 0:b74591d5ab33 298 {
be_bryan 0:b74591d5ab33 299 /* Update HAL state */
be_bryan 0:b74591d5ab33 300 HAL_RTCEx_WakeUpTimerIRQHandler(&RtcHandle);
be_bryan 0:b74591d5ab33 301 /* In case of registered handler, call it. */
be_bryan 0:b74591d5ab33 302 if (irq_handler) {
be_bryan 0:b74591d5ab33 303 irq_handler();
be_bryan 0:b74591d5ab33 304 }
be_bryan 0:b74591d5ab33 305 }
be_bryan 0:b74591d5ab33 306
be_bryan 0:b74591d5ab33 307 void rtc_set_irq_handler(uint32_t handler)
be_bryan 0:b74591d5ab33 308 {
be_bryan 0:b74591d5ab33 309 irq_handler = (void (*)(void))handler;
be_bryan 0:b74591d5ab33 310 }
be_bryan 0:b74591d5ab33 311
be_bryan 0:b74591d5ab33 312 uint32_t rtc_read_subseconds(void)
be_bryan 0:b74591d5ab33 313 {
be_bryan 0:b74591d5ab33 314 return 1000000.f * ((double)(RTC_SYNCH_PREDIV - RTC->SSR) / (RTC_SYNCH_PREDIV + 1));
be_bryan 0:b74591d5ab33 315 }
be_bryan 0:b74591d5ab33 316
be_bryan 0:b74591d5ab33 317 void rtc_set_wake_up_timer(uint32_t delta)
be_bryan 0:b74591d5ab33 318 {
be_bryan 0:b74591d5ab33 319 uint32_t wake_up_counter = delta / (2000000 / RTC_CLOCK);
be_bryan 0:b74591d5ab33 320
be_bryan 0:b74591d5ab33 321 if (HAL_RTCEx_SetWakeUpTimer_IT(&RtcHandle, wake_up_counter,
be_bryan 0:b74591d5ab33 322 RTC_WAKEUPCLOCK_RTCCLK_DIV2) != HAL_OK) {
be_bryan 0:b74591d5ab33 323 error("Set wake up timer failed\n");
be_bryan 0:b74591d5ab33 324 }
be_bryan 0:b74591d5ab33 325 }
be_bryan 0:b74591d5ab33 326
be_bryan 0:b74591d5ab33 327 void rtc_deactivate_wake_up_timer(void)
be_bryan 0:b74591d5ab33 328 {
be_bryan 0:b74591d5ab33 329 HAL_RTCEx_DeactivateWakeUpTimer(&RtcHandle);
be_bryan 0:b74591d5ab33 330 }
be_bryan 0:b74591d5ab33 331
be_bryan 0:b74591d5ab33 332 void rtc_synchronize(void)
be_bryan 0:b74591d5ab33 333 {
be_bryan 0:b74591d5ab33 334 HAL_RTC_WaitForSynchro(&RtcHandle);
be_bryan 0:b74591d5ab33 335 }
be_bryan 0:b74591d5ab33 336 #endif /* DEVICE_LOWPOWERTIMER */
be_bryan 0:b74591d5ab33 337
be_bryan 0:b74591d5ab33 338 #endif /* DEVICE_RTC */