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targets/TARGET_STM/rtc_api.c@160:d5399cc887bb, 2017-03-14 (annotated)

Committer:
<>
Date:
Tue Mar 14 16:40:56 2017 +0000
Revision:
160:d5399cc887bb
Parent:
154:37f96f9d4de2
Child:
165:e614a9f1c9e2
This updates the lib to the mbed lib v138

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 154:37f96f9d4de2 1 /* mbed Microcontroller Library
<> 154:37f96f9d4de2 2 *******************************************************************************
<> 154:37f96f9d4de2 3 * Copyright (c) 2016, STMicroelectronics
<> 154:37f96f9d4de2 4 * All rights reserved.
<> 154:37f96f9d4de2 5 *
<> 154:37f96f9d4de2 6 * Redistribution and use in source and binary forms, with or without
<> 154:37f96f9d4de2 7 * modification, are permitted provided that the following conditions are met:
<> 154:37f96f9d4de2 8 *
<> 154:37f96f9d4de2 9 * 1. Redistributions of source code must retain the above copyright notice,
<> 154:37f96f9d4de2 10 * this list of conditions and the following disclaimer.
<> 154:37f96f9d4de2 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 154:37f96f9d4de2 12 * this list of conditions and the following disclaimer in the documentation
<> 154:37f96f9d4de2 13 * and/or other materials provided with the distribution.
<> 154:37f96f9d4de2 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 154:37f96f9d4de2 15 * may be used to endorse or promote products derived from this software
<> 154:37f96f9d4de2 16 * without specific prior written permission.
<> 154:37f96f9d4de2 17 *
<> 154:37f96f9d4de2 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 154:37f96f9d4de2 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 154:37f96f9d4de2 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 154:37f96f9d4de2 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 154:37f96f9d4de2 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 154:37f96f9d4de2 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 154:37f96f9d4de2 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 154:37f96f9d4de2 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 154:37f96f9d4de2 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 154:37f96f9d4de2 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 154:37f96f9d4de2 28 *******************************************************************************
<> 154:37f96f9d4de2 29 */
<> 154:37f96f9d4de2 30 #if DEVICE_RTC
<> 154:37f96f9d4de2 31
<> 154:37f96f9d4de2 32 #include "rtc_api.h"
<> 154:37f96f9d4de2 33 #include "rtc_api_hal.h"
<> 154:37f96f9d4de2 34 #include "mbed_error.h"
<> 154:37f96f9d4de2 35
<> 154:37f96f9d4de2 36 static RTC_HandleTypeDef RtcHandle;
<> 154:37f96f9d4de2 37
<> 154:37f96f9d4de2 38 #if RTC_LSI
<> 154:37f96f9d4de2 39 #define RTC_CLOCK LSI_VALUE
<> 154:37f96f9d4de2 40 #else
<> 154:37f96f9d4de2 41 #define RTC_CLOCK LSE_VALUE
<> 154:37f96f9d4de2 42 #endif
<> 154:37f96f9d4de2 43
<> 154:37f96f9d4de2 44 #if DEVICE_LOWPOWERTIMER
<> 154:37f96f9d4de2 45 #define RTC_ASYNCH_PREDIV ((RTC_CLOCK - 1) / 0x8000)
<> 154:37f96f9d4de2 46 #define RTC_SYNCH_PREDIV (RTC_CLOCK / (RTC_ASYNCH_PREDIV + 1) - 1)
<> 154:37f96f9d4de2 47 #else
<> 154:37f96f9d4de2 48 #define RTC_ASYNCH_PREDIV (0x007F)
<> 154:37f96f9d4de2 49 #define RTC_SYNCH_PREDIV (RTC_CLOCK / (RTC_ASYNCH_PREDIV + 1) - 1)
<> 154:37f96f9d4de2 50 #endif
<> 154:37f96f9d4de2 51
<> 154:37f96f9d4de2 52 #if DEVICE_LOWPOWERTIMER
<> 154:37f96f9d4de2 53 static void (*irq_handler)(void);
<> 154:37f96f9d4de2 54 static void RTC_IRQHandler(void);
<> 154:37f96f9d4de2 55 #endif
<> 154:37f96f9d4de2 56
<> 154:37f96f9d4de2 57 void rtc_init(void)
<> 154:37f96f9d4de2 58 {
<> 154:37f96f9d4de2 59 RCC_OscInitTypeDef RCC_OscInitStruct;
<> 154:37f96f9d4de2 60 RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
<> 154:37f96f9d4de2 61
<> 154:37f96f9d4de2 62 // Enable access to Backup domain
<> 154:37f96f9d4de2 63 HAL_PWR_EnableBkUpAccess();
<> 154:37f96f9d4de2 64
<> 154:37f96f9d4de2 65 RtcHandle.Instance = RTC;
<> 154:37f96f9d4de2 66
<> 154:37f96f9d4de2 67 #if !RTC_LSI
<> 154:37f96f9d4de2 68 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
<> 154:37f96f9d4de2 69 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
<> 154:37f96f9d4de2 70 RCC_OscInitStruct.LSEState = RCC_LSE_ON;
<> 154:37f96f9d4de2 71 RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
<> 154:37f96f9d4de2 72
<> 154:37f96f9d4de2 73 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) == HAL_OK) {
<> 154:37f96f9d4de2 74 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSE);
<> 154:37f96f9d4de2 75 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSE);
<> 154:37f96f9d4de2 76 } else {
<> 154:37f96f9d4de2 77 error("Cannot initialize RTC with LSE\n");
<> 154:37f96f9d4de2 78 }
<> 154:37f96f9d4de2 79
<> 154:37f96f9d4de2 80 PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
<> 154:37f96f9d4de2 81 PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
<> 154:37f96f9d4de2 82 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) {
<> 154:37f96f9d4de2 83 error("PeriphClkInitStruct RTC failed with LSE\n");
<> 154:37f96f9d4de2 84 }
<> 154:37f96f9d4de2 85 #else /* !RTC_LSI */
<> 154:37f96f9d4de2 86 __PWR_CLK_ENABLE();
<> 154:37f96f9d4de2 87
<> 154:37f96f9d4de2 88 // Reset Backup domain
<> 154:37f96f9d4de2 89 __HAL_RCC_BACKUPRESET_FORCE();
<> 154:37f96f9d4de2 90 __HAL_RCC_BACKUPRESET_RELEASE();
<> 154:37f96f9d4de2 91
<> 154:37f96f9d4de2 92 // Enable LSI clock
<> 154:37f96f9d4de2 93 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI;
<> 154:37f96f9d4de2 94 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
<> 154:37f96f9d4de2 95 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
<> 154:37f96f9d4de2 96 RCC_OscInitStruct.LSIState = RCC_LSI_ON;
<> 154:37f96f9d4de2 97 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
<> 154:37f96f9d4de2 98 error("Cannot initialize RTC with LSI\n");
<> 154:37f96f9d4de2 99 }
<> 154:37f96f9d4de2 100
<> 154:37f96f9d4de2 101 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSI);
<> 154:37f96f9d4de2 102 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
<> 154:37f96f9d4de2 103
<> 154:37f96f9d4de2 104 PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
<> 154:37f96f9d4de2 105 PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
<> 154:37f96f9d4de2 106 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) {
<> 154:37f96f9d4de2 107 error("PeriphClkInitStruct RTC failed with LSI\n");
<> 154:37f96f9d4de2 108 }
<> 154:37f96f9d4de2 109 #endif /* !RTC_LSI */
<> 154:37f96f9d4de2 110
<> 154:37f96f9d4de2 111 // Enable RTC
<> 154:37f96f9d4de2 112 __HAL_RCC_RTC_ENABLE();
<> 154:37f96f9d4de2 113
<> 154:37f96f9d4de2 114 #if TARGET_STM32F1
<> 154:37f96f9d4de2 115 RtcHandle.Init.AsynchPrediv = RTC_AUTO_1_SECOND;
<> 154:37f96f9d4de2 116 #else /* TARGET_STM32F1 */
<> 154:37f96f9d4de2 117 RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
<> 154:37f96f9d4de2 118 RtcHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
<> 154:37f96f9d4de2 119 RtcHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
<> 154:37f96f9d4de2 120 RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
<> 154:37f96f9d4de2 121 RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
<> 154:37f96f9d4de2 122 RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
<> 154:37f96f9d4de2 123 #endif /* TARGET_STM32F1 */
<> 154:37f96f9d4de2 124
<> 154:37f96f9d4de2 125 if (HAL_RTC_Init(&RtcHandle) != HAL_OK) {
<> 154:37f96f9d4de2 126 error("RTC error: RTC initialization failed.");
<> 154:37f96f9d4de2 127 }
<> 154:37f96f9d4de2 128
<> 154:37f96f9d4de2 129 #if DEVICE_LOWPOWERTIMER
<> 154:37f96f9d4de2 130
<> 154:37f96f9d4de2 131 #if !RTC_LSI
<> 154:37f96f9d4de2 132 if (!rtc_isenabled())
<> 154:37f96f9d4de2 133 #endif /* !RTC_LSI */
<> 154:37f96f9d4de2 134 {
<> 154:37f96f9d4de2 135 rtc_write(0);
<> 154:37f96f9d4de2 136 }
<> 154:37f96f9d4de2 137
<> 154:37f96f9d4de2 138 NVIC_ClearPendingIRQ(RTC_WKUP_IRQn);
<> 154:37f96f9d4de2 139 NVIC_DisableIRQ(RTC_WKUP_IRQn);
<> 154:37f96f9d4de2 140 NVIC_SetVector(RTC_WKUP_IRQn, (uint32_t)RTC_IRQHandler);
<> 154:37f96f9d4de2 141 NVIC_EnableIRQ(RTC_WKUP_IRQn);
<> 154:37f96f9d4de2 142
<> 154:37f96f9d4de2 143 #endif /* DEVICE_LOWPOWERTIMER */
<> 154:37f96f9d4de2 144 }
<> 154:37f96f9d4de2 145
<> 154:37f96f9d4de2 146 void rtc_free(void)
<> 154:37f96f9d4de2 147 {
<> 154:37f96f9d4de2 148 #if RTC_LSI
<> 154:37f96f9d4de2 149 // Enable Power clock
<> 154:37f96f9d4de2 150 __PWR_CLK_ENABLE();
<> 154:37f96f9d4de2 151
<> 154:37f96f9d4de2 152 // Enable access to Backup domain
<> 154:37f96f9d4de2 153 HAL_PWR_EnableBkUpAccess();
<> 154:37f96f9d4de2 154
<> 154:37f96f9d4de2 155 // Reset Backup domain
<> 154:37f96f9d4de2 156 __HAL_RCC_BACKUPRESET_FORCE();
<> 154:37f96f9d4de2 157 __HAL_RCC_BACKUPRESET_RELEASE();
<> 154:37f96f9d4de2 158
<> 154:37f96f9d4de2 159 // Disable access to Backup domain
<> 154:37f96f9d4de2 160 HAL_PWR_DisableBkUpAccess();
<> 154:37f96f9d4de2 161 #endif
<> 154:37f96f9d4de2 162
<> 154:37f96f9d4de2 163 // Disable LSI and LSE clocks
<> 154:37f96f9d4de2 164 RCC_OscInitTypeDef RCC_OscInitStruct;
<> 154:37f96f9d4de2 165 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
<> 154:37f96f9d4de2 166 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
<> 154:37f96f9d4de2 167 RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
<> 154:37f96f9d4de2 168 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
<> 154:37f96f9d4de2 169 HAL_RCC_OscConfig(&RCC_OscInitStruct);
<> 154:37f96f9d4de2 170 }
<> 154:37f96f9d4de2 171
<> 154:37f96f9d4de2 172 /*
<> 160:d5399cc887bb 173 ST RTC_DateTypeDef structure
<> 160:d5399cc887bb 174 WeekDay 1=monday, 2=tuesday, ..., 7=sunday
<> 160:d5399cc887bb 175 Month 0x1=january, 0x2=february, ..., 0x12=december
<> 160:d5399cc887bb 176 Date day of the month 1-31
<> 160:d5399cc887bb 177 Year year 0-99
<> 160:d5399cc887bb 178
<> 160:d5399cc887bb 179 ST RTC_TimeTypeDef structure
<> 160:d5399cc887bb 180 Hours 0-12 if the RTC_HourFormat_12 is selected during init
<> 160:d5399cc887bb 181 0-23 if the RTC_HourFormat_24 is selected during init
<> 160:d5399cc887bb 182 Minutes 0-59
<> 160:d5399cc887bb 183 Seconds 0-59
<> 160:d5399cc887bb 184 TimeFormat RTC_HOURFORMAT12_AM/RTC_HOURFORMAT12_PM
<> 160:d5399cc887bb 185 SubSeconds time unit range between [0-1] Second with [1 Sec / SecondFraction +1] granularity
<> 160:d5399cc887bb 186 SecondFraction range or granularity of Sub Second register content corresponding to Synchronous pre-scaler factor value (PREDIV_S)
<> 160:d5399cc887bb 187 DayLightSaving RTC_DAYLIGHTSAVING_SUB1H/RTC_DAYLIGHTSAVING_ADD1H/RTC_DAYLIGHTSAVING_NONE
<> 160:d5399cc887bb 188 StoreOperation RTC_STOREOPERATION_RESET/RTC_STOREOPERATION_SET
<> 160:d5399cc887bb 189
<> 154:37f96f9d4de2 190 struct tm
<> 154:37f96f9d4de2 191 tm_sec seconds after the minute 0-61
<> 154:37f96f9d4de2 192 tm_min minutes after the hour 0-59
<> 154:37f96f9d4de2 193 tm_hour hours since midnight 0-23
<> 154:37f96f9d4de2 194 tm_mday day of the month 1-31
<> 154:37f96f9d4de2 195 tm_mon months since January 0-11
<> 154:37f96f9d4de2 196 tm_year years since 1900
<> 154:37f96f9d4de2 197 tm_wday days since Sunday 0-6
<> 154:37f96f9d4de2 198 tm_yday days since January 1 0-365
<> 154:37f96f9d4de2 199 tm_isdst Daylight Saving Time flag
<> 154:37f96f9d4de2 200 */
<> 160:d5399cc887bb 201
<> 160:d5399cc887bb 202 /*
<> 160:d5399cc887bb 203 Information about STM32F0, STM32F2, STM32F3, STM32F4, STM32F7, STM32L0, STM32L1, STM32L4:
<> 160:d5399cc887bb 204 BCD format is used to store the date in the RTC. The year is store on 2 * 4 bits.
<> 160:d5399cc887bb 205 Because the first year is reserved to see if the RTC is init, the supposed range is 01-99.
<> 160:d5399cc887bb 206 1st point is to cover the standard range from 1970 to 2038 (limited by the 32 bits of time_t).
<> 160:d5399cc887bb 207 2nd point is to keep the year 1970 and the leap years synchronized.
<> 160:d5399cc887bb 208
<> 160:d5399cc887bb 209 So by moving it 68 years forward from 1970, it become 1969-2067 which include 1970-2038.
<> 160:d5399cc887bb 210 68 is also a multiple of 4 so it let the leap year synchronized.
<> 160:d5399cc887bb 211
<> 160:d5399cc887bb 212 Information about STM32F1:
<> 160:d5399cc887bb 213 32bit register is used (no BCD format) for the seconds and a software structure to store dates.
<> 160:d5399cc887bb 214 It is then not a problem to not use shifts.
<> 160:d5399cc887bb 215 */
<> 160:d5399cc887bb 216
<> 154:37f96f9d4de2 217 time_t rtc_read(void)
<> 154:37f96f9d4de2 218 {
<> 154:37f96f9d4de2 219 RTC_DateTypeDef dateStruct;
<> 154:37f96f9d4de2 220 RTC_TimeTypeDef timeStruct;
<> 154:37f96f9d4de2 221 struct tm timeinfo;
<> 154:37f96f9d4de2 222
<> 154:37f96f9d4de2 223 RtcHandle.Instance = RTC;
<> 154:37f96f9d4de2 224
<> 154:37f96f9d4de2 225 // Read actual date and time
<> 154:37f96f9d4de2 226 // Warning: the time must be read first!
<> 160:d5399cc887bb 227 HAL_RTC_GetTime(&RtcHandle, &timeStruct, RTC_FORMAT_BIN);
<> 160:d5399cc887bb 228 HAL_RTC_GetDate(&RtcHandle, &dateStruct, RTC_FORMAT_BIN);
<> 154:37f96f9d4de2 229
<> 154:37f96f9d4de2 230 // Setup a tm structure based on the RTC
<> 160:d5399cc887bb 231 /* tm_wday information is ignored by mktime */
<> 154:37f96f9d4de2 232 timeinfo.tm_mon = dateStruct.Month - 1;
<> 154:37f96f9d4de2 233 timeinfo.tm_mday = dateStruct.Date;
<> 154:37f96f9d4de2 234 timeinfo.tm_year = dateStruct.Year + 68;
<> 154:37f96f9d4de2 235 timeinfo.tm_hour = timeStruct.Hours;
<> 154:37f96f9d4de2 236 timeinfo.tm_min = timeStruct.Minutes;
<> 154:37f96f9d4de2 237 timeinfo.tm_sec = timeStruct.Seconds;
<> 154:37f96f9d4de2 238 // Daylight Saving Time information is not available
<> 154:37f96f9d4de2 239 timeinfo.tm_isdst = -1;
<> 154:37f96f9d4de2 240
<> 154:37f96f9d4de2 241 // Convert to timestamp
<> 154:37f96f9d4de2 242 time_t t = mktime(&timeinfo);
<> 154:37f96f9d4de2 243
<> 154:37f96f9d4de2 244 return t;
<> 154:37f96f9d4de2 245 }
<> 154:37f96f9d4de2 246
<> 154:37f96f9d4de2 247 void rtc_write(time_t t)
<> 154:37f96f9d4de2 248 {
<> 154:37f96f9d4de2 249 RTC_DateTypeDef dateStruct;
<> 154:37f96f9d4de2 250 RTC_TimeTypeDef timeStruct;
<> 154:37f96f9d4de2 251
<> 154:37f96f9d4de2 252 RtcHandle.Instance = RTC;
<> 154:37f96f9d4de2 253
<> 154:37f96f9d4de2 254 // Convert the time into a tm
<> 154:37f96f9d4de2 255 struct tm *timeinfo = localtime(&t);
<> 154:37f96f9d4de2 256
<> 154:37f96f9d4de2 257 // Fill RTC structures
<> 160:d5399cc887bb 258 if (timeinfo->tm_wday == 0) {
<> 160:d5399cc887bb 259 dateStruct.WeekDay = 7;
<> 160:d5399cc887bb 260 } else {
<> 160:d5399cc887bb 261 dateStruct.WeekDay = timeinfo->tm_wday;
<> 160:d5399cc887bb 262 }
<> 154:37f96f9d4de2 263 dateStruct.Month = timeinfo->tm_mon + 1;
<> 154:37f96f9d4de2 264 dateStruct.Date = timeinfo->tm_mday;
<> 154:37f96f9d4de2 265 dateStruct.Year = timeinfo->tm_year - 68;
<> 154:37f96f9d4de2 266 timeStruct.Hours = timeinfo->tm_hour;
<> 154:37f96f9d4de2 267 timeStruct.Minutes = timeinfo->tm_min;
<> 154:37f96f9d4de2 268 timeStruct.Seconds = timeinfo->tm_sec;
<> 154:37f96f9d4de2 269
<> 154:37f96f9d4de2 270 #if !(TARGET_STM32F1)
<> 154:37f96f9d4de2 271 timeStruct.TimeFormat = RTC_HOURFORMAT_24;
<> 154:37f96f9d4de2 272 timeStruct.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
<> 154:37f96f9d4de2 273 timeStruct.StoreOperation = RTC_STOREOPERATION_RESET;
<> 154:37f96f9d4de2 274 #endif /* TARGET_STM32F1 */
<> 154:37f96f9d4de2 275
<> 154:37f96f9d4de2 276 // Change the RTC current date/time
<> 160:d5399cc887bb 277 HAL_RTC_SetDate(&RtcHandle, &dateStruct, RTC_FORMAT_BIN);
<> 160:d5399cc887bb 278 HAL_RTC_SetTime(&RtcHandle, &timeStruct, RTC_FORMAT_BIN);
<> 154:37f96f9d4de2 279 }
<> 154:37f96f9d4de2 280
<> 154:37f96f9d4de2 281 int rtc_isenabled(void)
<> 154:37f96f9d4de2 282 {
<> 160:d5399cc887bb 283 #if !(TARGET_STM32F1)
<> 160:d5399cc887bb 284 return ( ((RTC->ISR & RTC_ISR_INITS) == RTC_ISR_INITS) && ((RTC->ISR & RTC_ISR_RSF) == RTC_ISR_RSF) );
<> 160:d5399cc887bb 285 #else /* TARGET_STM32F1 */
<> 160:d5399cc887bb 286 return ((RTC->CRL & RTC_CRL_RSF) == RTC_CRL_RSF);
<> 160:d5399cc887bb 287 #endif /* TARGET_STM32F1 */
<> 154:37f96f9d4de2 288 }
<> 154:37f96f9d4de2 289
<> 154:37f96f9d4de2 290 #if DEVICE_LOWPOWERTIMER
<> 154:37f96f9d4de2 291
<> 154:37f96f9d4de2 292 static void RTC_IRQHandler(void)
<> 154:37f96f9d4de2 293 {
<> 154:37f96f9d4de2 294 HAL_RTCEx_WakeUpTimerIRQHandler(&RtcHandle);
<> 154:37f96f9d4de2 295 }
<> 154:37f96f9d4de2 296
<> 154:37f96f9d4de2 297 void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *hrtc)
<> 154:37f96f9d4de2 298 {
<> 154:37f96f9d4de2 299 if (irq_handler) {
<> 154:37f96f9d4de2 300 // Fire the user callback
<> 154:37f96f9d4de2 301 irq_handler();
<> 154:37f96f9d4de2 302 }
<> 154:37f96f9d4de2 303 }
<> 154:37f96f9d4de2 304
<> 154:37f96f9d4de2 305 void rtc_set_irq_handler(uint32_t handler)
<> 154:37f96f9d4de2 306 {
<> 154:37f96f9d4de2 307 irq_handler = (void (*)(void))handler;
<> 154:37f96f9d4de2 308 }
<> 154:37f96f9d4de2 309
<> 154:37f96f9d4de2 310 uint32_t rtc_read_subseconds(void)
<> 154:37f96f9d4de2 311 {
<> 154:37f96f9d4de2 312 return 1000000.f * ((double)(RTC_SYNCH_PREDIV - RTC->SSR) / (RTC_SYNCH_PREDIV + 1));
<> 154:37f96f9d4de2 313 }
<> 154:37f96f9d4de2 314
<> 154:37f96f9d4de2 315 void rtc_set_wake_up_timer(uint32_t delta)
<> 154:37f96f9d4de2 316 {
<> 154:37f96f9d4de2 317 uint32_t wake_up_counter = delta / (2000000 / RTC_CLOCK);
<> 154:37f96f9d4de2 318
<> 154:37f96f9d4de2 319 if (HAL_RTCEx_SetWakeUpTimer_IT(&RtcHandle, wake_up_counter,
<> 154:37f96f9d4de2 320 RTC_WAKEUPCLOCK_RTCCLK_DIV2) != HAL_OK) {
<> 154:37f96f9d4de2 321 error("Set wake up timer failed\n");
<> 154:37f96f9d4de2 322 }
<> 154:37f96f9d4de2 323 }
<> 154:37f96f9d4de2 324
<> 154:37f96f9d4de2 325 void rtc_deactivate_wake_up_timer(void)
<> 154:37f96f9d4de2 326 {
<> 154:37f96f9d4de2 327 HAL_RTCEx_DeactivateWakeUpTimer(&RtcHandle);
<> 154:37f96f9d4de2 328 }
<> 154:37f96f9d4de2 329
<> 154:37f96f9d4de2 330 void rtc_synchronize(void)
<> 154:37f96f9d4de2 331 {
<> 154:37f96f9d4de2 332 HAL_RTC_WaitForSynchro(&RtcHandle);
<> 154:37f96f9d4de2 333 }
<> 154:37f96f9d4de2 334 #endif /* DEVICE_LOWPOWERTIMER */
<> 154:37f96f9d4de2 335
<> 154:37f96f9d4de2 336 #endif /* DEVICE_RTC */