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targets/hal/TARGET_STM/TARGET_STM32L1/rtc_api.c@148:21d94c44109e, 2016-09-30 (annotated)

Committer:
<>
Date:
Fri Sep 30 18:07:01 2016 +0100
Revision:
148:21d94c44109e
Parent:
144:ef7eb2e8f9f7 
This updates the lib to the mbed lib v127

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 *******************************************************************************
<> 148:21d94c44109e 3 * Copyright (c) 2016, STMicroelectronics
<> 144:ef7eb2e8f9f7 4 * All rights reserved.
<> 144:ef7eb2e8f9f7 5 *
<> 144:ef7eb2e8f9f7 6 * Redistribution and use in source and binary forms, with or without
<> 144:ef7eb2e8f9f7 7 * modification, are permitted provided that the following conditions are met:
<> 144:ef7eb2e8f9f7 8 *
<> 144:ef7eb2e8f9f7 9 * 1. Redistributions of source code must retain the above copyright notice,
<> 144:ef7eb2e8f9f7 10 * this list of conditions and the following disclaimer.
<> 144:ef7eb2e8f9f7 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 144:ef7eb2e8f9f7 12 * this list of conditions and the following disclaimer in the documentation
<> 144:ef7eb2e8f9f7 13 * and/or other materials provided with the distribution.
<> 144:ef7eb2e8f9f7 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 144:ef7eb2e8f9f7 15 * may be used to endorse or promote products derived from this software
<> 144:ef7eb2e8f9f7 16 * without specific prior written permission.
<> 144:ef7eb2e8f9f7 17 *
<> 144:ef7eb2e8f9f7 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 144:ef7eb2e8f9f7 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 144:ef7eb2e8f9f7 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 144:ef7eb2e8f9f7 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 144:ef7eb2e8f9f7 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 144:ef7eb2e8f9f7 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 144:ef7eb2e8f9f7 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 144:ef7eb2e8f9f7 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 144:ef7eb2e8f9f7 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 144:ef7eb2e8f9f7 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 144:ef7eb2e8f9f7 28 *******************************************************************************
<> 144:ef7eb2e8f9f7 29 */
<> 144:ef7eb2e8f9f7 30 #include "rtc_api.h"
<> 148:21d94c44109e 31 #include "rtc_api_hal.h"
<> 144:ef7eb2e8f9f7 32
<> 144:ef7eb2e8f9f7 33 #if DEVICE_RTC
<> 144:ef7eb2e8f9f7 34
<> 144:ef7eb2e8f9f7 35 #include "mbed_error.h"
<> 144:ef7eb2e8f9f7 36
<> 144:ef7eb2e8f9f7 37 #if DEVICE_RTC_LSI
<> 144:ef7eb2e8f9f7 38 static int rtc_inited = 0;
<> 144:ef7eb2e8f9f7 39 #endif
<> 144:ef7eb2e8f9f7 40
<> 148:21d94c44109e 41 static RTC_HandleTypeDef RtcHandle;
<> 148:21d94c44109e 42
<> 148:21d94c44109e 43 #if DEVICE_RTC_LSI
<> 148:21d94c44109e 44 #define RTC_CLOCK LSI_VALUE
<> 148:21d94c44109e 45 #else
<> 148:21d94c44109e 46 #define RTC_CLOCK LSE_VALUE
<> 148:21d94c44109e 47 #endif
<> 148:21d94c44109e 48
<> 148:21d94c44109e 49 #if DEVICE_LOWPOWERTIMER
<> 148:21d94c44109e 50 #define RTC_ASYNCH_PREDIV ((RTC_CLOCK - 1) / 0x8000)
<> 148:21d94c44109e 51 #define RTC_SYNCH_PREDIV (RTC_CLOCK / (RTC_ASYNCH_PREDIV + 1) - 1)
<> 148:21d94c44109e 52 #else
<> 148:21d94c44109e 53 #define RTC_ASYNCH_PREDIV (0x007F)
<> 148:21d94c44109e 54 #define RTC_SYNCH_PREDIV (RTC_CLOCK / (RTC_ASYNCH_PREDIV + 1) - 1)
<> 148:21d94c44109e 55 #endif
<> 148:21d94c44109e 56
<> 148:21d94c44109e 57 #if DEVICE_LOWPOWERTIMER
<> 148:21d94c44109e 58 static void (*irq_handler)(void);
<> 148:21d94c44109e 59 static void RTC_IRQHandler(void);
<> 148:21d94c44109e 60 #endif
<> 144:ef7eb2e8f9f7 61
<> 144:ef7eb2e8f9f7 62 void rtc_init(void)
<> 144:ef7eb2e8f9f7 63 {
<> 144:ef7eb2e8f9f7 64 RCC_OscInitTypeDef RCC_OscInitStruct;
<> 144:ef7eb2e8f9f7 65
<> 144:ef7eb2e8f9f7 66 #if DEVICE_RTC_LSI
<> 144:ef7eb2e8f9f7 67 if (rtc_inited) return;
<> 144:ef7eb2e8f9f7 68 rtc_inited = 1;
<> 144:ef7eb2e8f9f7 69 #endif
<> 144:ef7eb2e8f9f7 70
<> 144:ef7eb2e8f9f7 71 RtcHandle.Instance = RTC;
<> 144:ef7eb2e8f9f7 72
<> 144:ef7eb2e8f9f7 73 #if !DEVICE_RTC_LSI
<> 144:ef7eb2e8f9f7 74 // Enable LSE Oscillator
<> 144:ef7eb2e8f9f7 75 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
<> 144:ef7eb2e8f9f7 76 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
<> 144:ef7eb2e8f9f7 77 RCC_OscInitStruct.LSEState = RCC_LSE_ON; // External 32.768 kHz clock on OSC_IN/OSC_OUT
<> 144:ef7eb2e8f9f7 78 RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
<> 144:ef7eb2e8f9f7 79 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) == HAL_OK) { // Check if LSE has started correctly
<> 144:ef7eb2e8f9f7 80 // Connect LSE to RTC
<> 144:ef7eb2e8f9f7 81 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSE);
<> 144:ef7eb2e8f9f7 82 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSE);
<> 144:ef7eb2e8f9f7 83 } else {
<> 144:ef7eb2e8f9f7 84 error("Cannot initialize RTC with LSE\n");
<> 144:ef7eb2e8f9f7 85 }
<> 144:ef7eb2e8f9f7 86 #else
<> 144:ef7eb2e8f9f7 87 // Enable Power clock
<> 144:ef7eb2e8f9f7 88 __PWR_CLK_ENABLE();
<> 144:ef7eb2e8f9f7 89
<> 144:ef7eb2e8f9f7 90 // Enable access to Backup domain
<> 144:ef7eb2e8f9f7 91 HAL_PWR_EnableBkUpAccess();
<> 144:ef7eb2e8f9f7 92
<> 144:ef7eb2e8f9f7 93 // Reset Backup domain
<> 144:ef7eb2e8f9f7 94 __HAL_RCC_BACKUPRESET_FORCE();
<> 144:ef7eb2e8f9f7 95 __HAL_RCC_BACKUPRESET_RELEASE();
<> 144:ef7eb2e8f9f7 96
<> 144:ef7eb2e8f9f7 97 // Enable LSI clock
<> 144:ef7eb2e8f9f7 98 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
<> 144:ef7eb2e8f9f7 99 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
<> 144:ef7eb2e8f9f7 100 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
<> 144:ef7eb2e8f9f7 101 RCC_OscInitStruct.LSIState = RCC_LSI_ON;
<> 144:ef7eb2e8f9f7 102 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
<> 144:ef7eb2e8f9f7 103 error("Cannot initialize RTC with LSI\n");
<> 144:ef7eb2e8f9f7 104 }
<> 144:ef7eb2e8f9f7 105 // Connect LSI to RTC
<> 144:ef7eb2e8f9f7 106 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSI);
<> 144:ef7eb2e8f9f7 107 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
<> 144:ef7eb2e8f9f7 108 #endif
<> 144:ef7eb2e8f9f7 109
<> 144:ef7eb2e8f9f7 110 // Enable RTC
<> 144:ef7eb2e8f9f7 111 __HAL_RCC_RTC_ENABLE();
<> 144:ef7eb2e8f9f7 112
<> 144:ef7eb2e8f9f7 113 RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
<> 144:ef7eb2e8f9f7 114 #ifdef TARGET_MOTE_L152RC
<> 144:ef7eb2e8f9f7 115 /* SubSecond resolution of 16384Hz */
<> 144:ef7eb2e8f9f7 116 RtcHandle.Init.AsynchPrediv = 1;
<> 148:21d94c44109e 117 RtcHandle.Init.SynchPrediv = (RTC_CLOCK / 2) - 1;
<> 144:ef7eb2e8f9f7 118 #else
<> 148:21d94c44109e 119 RtcHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
<> 148:21d94c44109e 120 RtcHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
<> 144:ef7eb2e8f9f7 121 #endif
<> 144:ef7eb2e8f9f7 122 RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
<> 144:ef7eb2e8f9f7 123 RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
<> 144:ef7eb2e8f9f7 124 RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
<> 144:ef7eb2e8f9f7 125
<> 144:ef7eb2e8f9f7 126 if (HAL_RTC_Init(&RtcHandle) != HAL_OK) {
<> 144:ef7eb2e8f9f7 127 error("RTC error: RTC initialization failed.");
<> 144:ef7eb2e8f9f7 128 }
<> 148:21d94c44109e 129
<> 148:21d94c44109e 130 #if DEVICE_LOWPOWERTIMER
<> 148:21d94c44109e 131 #if DEVICE_RTC_LSI
<> 148:21d94c44109e 132 rtc_write(0);
<> 148:21d94c44109e 133 #else
<> 148:21d94c44109e 134 if (!rtc_isenabled()) {
<> 148:21d94c44109e 135 rtc_write(0);
<> 148:21d94c44109e 136 }
<> 148:21d94c44109e 137 #endif
<> 148:21d94c44109e 138 NVIC_ClearPendingIRQ(RTC_WKUP_IRQn);
<> 148:21d94c44109e 139 NVIC_DisableIRQ(RTC_WKUP_IRQn);
<> 148:21d94c44109e 140 NVIC_SetVector(RTC_WKUP_IRQn, (uint32_t)RTC_IRQHandler);
<> 148:21d94c44109e 141 NVIC_EnableIRQ(RTC_WKUP_IRQn);
<> 148:21d94c44109e 142 #endif
<> 144:ef7eb2e8f9f7 143 }
<> 144:ef7eb2e8f9f7 144
<> 144:ef7eb2e8f9f7 145 void rtc_free(void)
<> 144:ef7eb2e8f9f7 146 {
<> 144:ef7eb2e8f9f7 147 #if DEVICE_RTC_LSI
<> 144:ef7eb2e8f9f7 148 // Enable Power clock
<> 144:ef7eb2e8f9f7 149 __PWR_CLK_ENABLE();
<> 144:ef7eb2e8f9f7 150
<> 144:ef7eb2e8f9f7 151 // Enable access to Backup domain
<> 144:ef7eb2e8f9f7 152 HAL_PWR_EnableBkUpAccess();
<> 144:ef7eb2e8f9f7 153
<> 144:ef7eb2e8f9f7 154 // Reset Backup domain
<> 144:ef7eb2e8f9f7 155 __HAL_RCC_BACKUPRESET_FORCE();
<> 144:ef7eb2e8f9f7 156 __HAL_RCC_BACKUPRESET_RELEASE();
<> 144:ef7eb2e8f9f7 157
<> 144:ef7eb2e8f9f7 158 // Disable access to Backup domain
<> 144:ef7eb2e8f9f7 159 HAL_PWR_DisableBkUpAccess();
<> 144:ef7eb2e8f9f7 160 #endif
<> 144:ef7eb2e8f9f7 161
<> 144:ef7eb2e8f9f7 162 // Disable LSI and LSE clocks
<> 144:ef7eb2e8f9f7 163 RCC_OscInitTypeDef RCC_OscInitStruct;
<> 144:ef7eb2e8f9f7 164 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
<> 144:ef7eb2e8f9f7 165 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
<> 144:ef7eb2e8f9f7 166 RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
<> 144:ef7eb2e8f9f7 167 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
<> 144:ef7eb2e8f9f7 168 HAL_RCC_OscConfig(&RCC_OscInitStruct);
<> 144:ef7eb2e8f9f7 169
<> 144:ef7eb2e8f9f7 170 #if DEVICE_RTC_LSI
<> 144:ef7eb2e8f9f7 171 rtc_inited = 0;
<> 144:ef7eb2e8f9f7 172 #endif
<> 144:ef7eb2e8f9f7 173 }
<> 144:ef7eb2e8f9f7 174
<> 144:ef7eb2e8f9f7 175 int rtc_isenabled(void)
<> 144:ef7eb2e8f9f7 176 {
<> 144:ef7eb2e8f9f7 177 #if DEVICE_RTC_LSI
<> 144:ef7eb2e8f9f7 178 return rtc_inited;
<> 144:ef7eb2e8f9f7 179 #else
<> 144:ef7eb2e8f9f7 180 if ((RTC->ISR & RTC_ISR_INITS) == RTC_ISR_INITS) {
<> 144:ef7eb2e8f9f7 181 return 1;
<> 144:ef7eb2e8f9f7 182 } else {
<> 144:ef7eb2e8f9f7 183 return 0;
<> 144:ef7eb2e8f9f7 184 }
<> 144:ef7eb2e8f9f7 185 #endif
<> 144:ef7eb2e8f9f7 186 }
<> 144:ef7eb2e8f9f7 187
<> 144:ef7eb2e8f9f7 188 /*
<> 144:ef7eb2e8f9f7 189 RTC Registers
<> 144:ef7eb2e8f9f7 190 RTC_WeekDay 1=monday, 2=tuesday, ..., 7=sunday
<> 144:ef7eb2e8f9f7 191 RTC_Month 1=january, 2=february, ..., 12=december
<> 144:ef7eb2e8f9f7 192 RTC_Date day of the month 1-31
<> 144:ef7eb2e8f9f7 193 RTC_Year year 0-99
<> 144:ef7eb2e8f9f7 194 struct tm
<> 144:ef7eb2e8f9f7 195 tm_sec seconds after the minute 0-61
<> 144:ef7eb2e8f9f7 196 tm_min minutes after the hour 0-59
<> 144:ef7eb2e8f9f7 197 tm_hour hours since midnight 0-23
<> 144:ef7eb2e8f9f7 198 tm_mday day of the month 1-31
<> 144:ef7eb2e8f9f7 199 tm_mon months since January 0-11
<> 144:ef7eb2e8f9f7 200 tm_year years since 1900
<> 144:ef7eb2e8f9f7 201 tm_wday days since Sunday 0-6
<> 144:ef7eb2e8f9f7 202 tm_yday days since January 1 0-365
<> 144:ef7eb2e8f9f7 203 tm_isdst Daylight Saving Time flag
<> 144:ef7eb2e8f9f7 204 */
<> 144:ef7eb2e8f9f7 205 time_t rtc_read(void)
<> 144:ef7eb2e8f9f7 206 {
<> 144:ef7eb2e8f9f7 207 RTC_DateTypeDef dateStruct;
<> 144:ef7eb2e8f9f7 208 RTC_TimeTypeDef timeStruct;
<> 144:ef7eb2e8f9f7 209 struct tm timeinfo;
<> 144:ef7eb2e8f9f7 210
<> 144:ef7eb2e8f9f7 211 RtcHandle.Instance = RTC;
<> 144:ef7eb2e8f9f7 212
<> 144:ef7eb2e8f9f7 213 // Read actual date and time
<> 144:ef7eb2e8f9f7 214 // Warning: the time must be read first!
<> 144:ef7eb2e8f9f7 215 HAL_RTC_GetTime(&RtcHandle, &timeStruct, FORMAT_BIN);
<> 144:ef7eb2e8f9f7 216 HAL_RTC_GetDate(&RtcHandle, &dateStruct, FORMAT_BIN);
<> 144:ef7eb2e8f9f7 217
<> 144:ef7eb2e8f9f7 218 // Setup a tm structure based on the RTC
<> 144:ef7eb2e8f9f7 219 timeinfo.tm_wday = dateStruct.WeekDay;
<> 144:ef7eb2e8f9f7 220 timeinfo.tm_mon = dateStruct.Month - 1;
<> 144:ef7eb2e8f9f7 221 timeinfo.tm_mday = dateStruct.Date;
<> 144:ef7eb2e8f9f7 222 timeinfo.tm_year = dateStruct.Year + 68;
<> 144:ef7eb2e8f9f7 223 timeinfo.tm_hour = timeStruct.Hours;
<> 144:ef7eb2e8f9f7 224 timeinfo.tm_min = timeStruct.Minutes;
<> 144:ef7eb2e8f9f7 225 timeinfo.tm_sec = timeStruct.Seconds;
<> 144:ef7eb2e8f9f7 226 // Daylight Saving Time information is not available
<> 144:ef7eb2e8f9f7 227 timeinfo.tm_isdst = -1;
<> 144:ef7eb2e8f9f7 228
<> 144:ef7eb2e8f9f7 229 // Convert to timestamp
<> 144:ef7eb2e8f9f7 230 time_t t = mktime(&timeinfo);
<> 144:ef7eb2e8f9f7 231
<> 144:ef7eb2e8f9f7 232 return t;
<> 144:ef7eb2e8f9f7 233 }
<> 144:ef7eb2e8f9f7 234
<> 144:ef7eb2e8f9f7 235 void rtc_write(time_t t)
<> 144:ef7eb2e8f9f7 236 {
<> 144:ef7eb2e8f9f7 237 RTC_DateTypeDef dateStruct;
<> 144:ef7eb2e8f9f7 238 RTC_TimeTypeDef timeStruct;
<> 144:ef7eb2e8f9f7 239
<> 144:ef7eb2e8f9f7 240 RtcHandle.Instance = RTC;
<> 144:ef7eb2e8f9f7 241
<> 144:ef7eb2e8f9f7 242 // Convert the time into a tm
<> 144:ef7eb2e8f9f7 243 struct tm *timeinfo = localtime(&t);
<> 144:ef7eb2e8f9f7 244
<> 144:ef7eb2e8f9f7 245 // Fill RTC structures
<> 144:ef7eb2e8f9f7 246 dateStruct.WeekDay = timeinfo->tm_wday;
<> 144:ef7eb2e8f9f7 247 dateStruct.Month = timeinfo->tm_mon + 1;
<> 144:ef7eb2e8f9f7 248 dateStruct.Date = timeinfo->tm_mday;
<> 144:ef7eb2e8f9f7 249 dateStruct.Year = timeinfo->tm_year - 68;
<> 144:ef7eb2e8f9f7 250 timeStruct.Hours = timeinfo->tm_hour;
<> 144:ef7eb2e8f9f7 251 timeStruct.Minutes = timeinfo->tm_min;
<> 144:ef7eb2e8f9f7 252 timeStruct.Seconds = timeinfo->tm_sec;
<> 144:ef7eb2e8f9f7 253 timeStruct.TimeFormat = RTC_HOURFORMAT_24;
<> 144:ef7eb2e8f9f7 254 timeStruct.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
<> 144:ef7eb2e8f9f7 255 timeStruct.StoreOperation = RTC_STOREOPERATION_RESET;
<> 144:ef7eb2e8f9f7 256
<> 144:ef7eb2e8f9f7 257 // Change the RTC current date/time
<> 144:ef7eb2e8f9f7 258 HAL_RTC_SetDate(&RtcHandle, &dateStruct, FORMAT_BIN);
<> 144:ef7eb2e8f9f7 259 HAL_RTC_SetTime(&RtcHandle, &timeStruct, FORMAT_BIN);
<> 144:ef7eb2e8f9f7 260 }
<> 144:ef7eb2e8f9f7 261
<> 148:21d94c44109e 262 #if DEVICE_LOWPOWERTIMER
<> 148:21d94c44109e 263
<> 148:21d94c44109e 264 static void RTC_IRQHandler(void)
<> 148:21d94c44109e 265 {
<> 148:21d94c44109e 266 HAL_RTCEx_WakeUpTimerIRQHandler(&RtcHandle);
<> 148:21d94c44109e 267 }
<> 148:21d94c44109e 268
<> 148:21d94c44109e 269 void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *hrtc)
<> 148:21d94c44109e 270 {
<> 148:21d94c44109e 271 if (irq_handler) {
<> 148:21d94c44109e 272 // Fire the user callback
<> 148:21d94c44109e 273 irq_handler();
<> 148:21d94c44109e 274 }
<> 148:21d94c44109e 275 }
<> 148:21d94c44109e 276
<> 148:21d94c44109e 277 void rtc_set_irq_handler(uint32_t handler)
<> 148:21d94c44109e 278 {
<> 148:21d94c44109e 279 irq_handler = (void (*)(void))handler;
<> 148:21d94c44109e 280 }
<> 148:21d94c44109e 281
<> 148:21d94c44109e 282 uint32_t rtc_read_subseconds(void)
<> 148:21d94c44109e 283 {
<> 148:21d94c44109e 284 return 1000000.f * ((double)(RTC_SYNCH_PREDIV - RTC->SSR) / (RTC_SYNCH_PREDIV + 1));
<> 148:21d94c44109e 285 }
<> 148:21d94c44109e 286
<> 148:21d94c44109e 287 void rtc_set_wake_up_timer(uint32_t delta)
<> 148:21d94c44109e 288 {
<> 148:21d94c44109e 289 uint32_t wake_up_counter = delta / (2000000 / RTC_CLOCK);
<> 148:21d94c44109e 290
<> 148:21d94c44109e 291 if (HAL_RTCEx_SetWakeUpTimer_IT(&RtcHandle, wake_up_counter,
<> 148:21d94c44109e 292 RTC_WAKEUPCLOCK_RTCCLK_DIV2) != HAL_OK) {
<> 148:21d94c44109e 293 error("Set wake up timer failed\n");
<> 148:21d94c44109e 294 }
<> 148:21d94c44109e 295 }
<> 148:21d94c44109e 296
<> 148:21d94c44109e 297 void rtc_deactivate_wake_up_timer(void)
<> 148:21d94c44109e 298 {
<> 148:21d94c44109e 299 HAL_RTCEx_DeactivateWakeUpTimer(&RtcHandle);
<> 148:21d94c44109e 300 }
<> 148:21d94c44109e 301
<> 148:21d94c44109e 302 void rtc_synchronize(void)
<> 148:21d94c44109e 303 {
<> 148:21d94c44109e 304 HAL_RTC_WaitForSynchro(&RtcHandle);
<> 148:21d94c44109e 305 }
<> 148:21d94c44109e 306 #endif // DEVICE_LOWPOWERTIMER
<> 148:21d94c44109e 307
<> 144:ef7eb2e8f9f7 308 #endif