Rahul Dahiya / Mbed OS STM32F7 Ethernet

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mbed-os/targets/TARGET_STM/rtc_api.c@0:fb8047b156bb, 2020-01-15 (annotated)

Committer:
rahul_dahiya
Date:
Wed Jan 15 15:57:15 2020 +0530
Revision:
0:fb8047b156bb
STM32F7 LWIP

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rahul_dahiya 0:fb8047b156bb 1 /* mbed Microcontroller Library
rahul_dahiya 0:fb8047b156bb 2 *******************************************************************************
rahul_dahiya 0:fb8047b156bb 3 * Copyright (c) 2016, STMicroelectronics
rahul_dahiya 0:fb8047b156bb 4 * All rights reserved.
rahul_dahiya 0:fb8047b156bb 5 *
rahul_dahiya 0:fb8047b156bb 6 * Redistribution and use in source and binary forms, with or without
rahul_dahiya 0:fb8047b156bb 7 * modification, are permitted provided that the following conditions are met:
rahul_dahiya 0:fb8047b156bb 8 *
rahul_dahiya 0:fb8047b156bb 9 * 1. Redistributions of source code must retain the above copyright notice,
rahul_dahiya 0:fb8047b156bb 10 * this list of conditions and the following disclaimer.
rahul_dahiya 0:fb8047b156bb 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
rahul_dahiya 0:fb8047b156bb 12 * this list of conditions and the following disclaimer in the documentation
rahul_dahiya 0:fb8047b156bb 13 * and/or other materials provided with the distribution.
rahul_dahiya 0:fb8047b156bb 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
rahul_dahiya 0:fb8047b156bb 15 * may be used to endorse or promote products derived from this software
rahul_dahiya 0:fb8047b156bb 16 * without specific prior written permission.
rahul_dahiya 0:fb8047b156bb 17 *
rahul_dahiya 0:fb8047b156bb 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
rahul_dahiya 0:fb8047b156bb 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
rahul_dahiya 0:fb8047b156bb 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
rahul_dahiya 0:fb8047b156bb 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
rahul_dahiya 0:fb8047b156bb 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
rahul_dahiya 0:fb8047b156bb 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
rahul_dahiya 0:fb8047b156bb 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
rahul_dahiya 0:fb8047b156bb 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
rahul_dahiya 0:fb8047b156bb 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
rahul_dahiya 0:fb8047b156bb 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
rahul_dahiya 0:fb8047b156bb 28 *******************************************************************************
rahul_dahiya 0:fb8047b156bb 29 */
rahul_dahiya 0:fb8047b156bb 30 #if DEVICE_RTC
rahul_dahiya 0:fb8047b156bb 31
rahul_dahiya 0:fb8047b156bb 32 #include "rtc_api.h"
rahul_dahiya 0:fb8047b156bb 33 #include "rtc_api_hal.h"
rahul_dahiya 0:fb8047b156bb 34 #include "mbed_error.h"
rahul_dahiya 0:fb8047b156bb 35 #include "mbed_mktime.h"
rahul_dahiya 0:fb8047b156bb 36
rahul_dahiya 0:fb8047b156bb 37 static RTC_HandleTypeDef RtcHandle;
rahul_dahiya 0:fb8047b156bb 38
rahul_dahiya 0:fb8047b156bb 39 #if RTC_LSI
rahul_dahiya 0:fb8047b156bb 40 #define RTC_CLOCK LSI_VALUE
rahul_dahiya 0:fb8047b156bb 41 #else
rahul_dahiya 0:fb8047b156bb 42 #define RTC_CLOCK LSE_VALUE
rahul_dahiya 0:fb8047b156bb 43 #endif
rahul_dahiya 0:fb8047b156bb 44
rahul_dahiya 0:fb8047b156bb 45 #if DEVICE_LOWPOWERTIMER
rahul_dahiya 0:fb8047b156bb 46 #define RTC_ASYNCH_PREDIV ((RTC_CLOCK - 1) / 0x8000)
rahul_dahiya 0:fb8047b156bb 47 #define RTC_SYNCH_PREDIV (RTC_CLOCK / (RTC_ASYNCH_PREDIV + 1) - 1)
rahul_dahiya 0:fb8047b156bb 48 #else
rahul_dahiya 0:fb8047b156bb 49 #define RTC_ASYNCH_PREDIV (0x007F)
rahul_dahiya 0:fb8047b156bb 50 #define RTC_SYNCH_PREDIV (RTC_CLOCK / (RTC_ASYNCH_PREDIV + 1) - 1)
rahul_dahiya 0:fb8047b156bb 51 #endif
rahul_dahiya 0:fb8047b156bb 52
rahul_dahiya 0:fb8047b156bb 53 #if DEVICE_LOWPOWERTIMER
rahul_dahiya 0:fb8047b156bb 54 static void (*irq_handler)(void);
rahul_dahiya 0:fb8047b156bb 55 static void RTC_IRQHandler(void);
rahul_dahiya 0:fb8047b156bb 56 #endif
rahul_dahiya 0:fb8047b156bb 57
rahul_dahiya 0:fb8047b156bb 58 void rtc_init(void)
rahul_dahiya 0:fb8047b156bb 59 {
rahul_dahiya 0:fb8047b156bb 60 RCC_OscInitTypeDef RCC_OscInitStruct = {0};
rahul_dahiya 0:fb8047b156bb 61 RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
rahul_dahiya 0:fb8047b156bb 62
rahul_dahiya 0:fb8047b156bb 63 // Enable access to Backup domain
rahul_dahiya 0:fb8047b156bb 64 HAL_PWR_EnableBkUpAccess();
rahul_dahiya 0:fb8047b156bb 65
rahul_dahiya 0:fb8047b156bb 66 RtcHandle.Instance = RTC;
rahul_dahiya 0:fb8047b156bb 67 RtcHandle.State = HAL_RTC_STATE_RESET;
rahul_dahiya 0:fb8047b156bb 68
rahul_dahiya 0:fb8047b156bb 69 #if !RTC_LSI
rahul_dahiya 0:fb8047b156bb 70 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
rahul_dahiya 0:fb8047b156bb 71 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
rahul_dahiya 0:fb8047b156bb 72 RCC_OscInitStruct.LSEState = RCC_LSE_ON;
rahul_dahiya 0:fb8047b156bb 73 RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
rahul_dahiya 0:fb8047b156bb 74
rahul_dahiya 0:fb8047b156bb 75 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) == HAL_OK) {
rahul_dahiya 0:fb8047b156bb 76 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSE);
rahul_dahiya 0:fb8047b156bb 77 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSE);
rahul_dahiya 0:fb8047b156bb 78 } else {
rahul_dahiya 0:fb8047b156bb 79 error("Cannot initialize RTC with LSE\n");
rahul_dahiya 0:fb8047b156bb 80 }
rahul_dahiya 0:fb8047b156bb 81
rahul_dahiya 0:fb8047b156bb 82 PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
rahul_dahiya 0:fb8047b156bb 83 PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
rahul_dahiya 0:fb8047b156bb 84 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) {
rahul_dahiya 0:fb8047b156bb 85 error("PeriphClkInitStruct RTC failed with LSE\n");
rahul_dahiya 0:fb8047b156bb 86 }
rahul_dahiya 0:fb8047b156bb 87 #else /* !RTC_LSI */
rahul_dahiya 0:fb8047b156bb 88 __HAL_RCC_PWR_CLK_ENABLE();
rahul_dahiya 0:fb8047b156bb 89
rahul_dahiya 0:fb8047b156bb 90 // Reset Backup domain
rahul_dahiya 0:fb8047b156bb 91 __HAL_RCC_BACKUPRESET_FORCE();
rahul_dahiya 0:fb8047b156bb 92 __HAL_RCC_BACKUPRESET_RELEASE();
rahul_dahiya 0:fb8047b156bb 93
rahul_dahiya 0:fb8047b156bb 94 // Enable LSI clock
rahul_dahiya 0:fb8047b156bb 95 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI;
rahul_dahiya 0:fb8047b156bb 96 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
rahul_dahiya 0:fb8047b156bb 97 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
rahul_dahiya 0:fb8047b156bb 98 RCC_OscInitStruct.LSIState = RCC_LSI_ON;
rahul_dahiya 0:fb8047b156bb 99 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
rahul_dahiya 0:fb8047b156bb 100 error("Cannot initialize RTC with LSI\n");
rahul_dahiya 0:fb8047b156bb 101 }
rahul_dahiya 0:fb8047b156bb 102
rahul_dahiya 0:fb8047b156bb 103 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSI);
rahul_dahiya 0:fb8047b156bb 104 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
rahul_dahiya 0:fb8047b156bb 105
rahul_dahiya 0:fb8047b156bb 106 PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
rahul_dahiya 0:fb8047b156bb 107 PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
rahul_dahiya 0:fb8047b156bb 108 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) {
rahul_dahiya 0:fb8047b156bb 109 error("PeriphClkInitStruct RTC failed with LSI\n");
rahul_dahiya 0:fb8047b156bb 110 }
rahul_dahiya 0:fb8047b156bb 111 #endif /* !RTC_LSI */
rahul_dahiya 0:fb8047b156bb 112
rahul_dahiya 0:fb8047b156bb 113 // Enable RTC
rahul_dahiya 0:fb8047b156bb 114 __HAL_RCC_RTC_ENABLE();
rahul_dahiya 0:fb8047b156bb 115
rahul_dahiya 0:fb8047b156bb 116 #if TARGET_STM32F1
rahul_dahiya 0:fb8047b156bb 117 RtcHandle.Init.AsynchPrediv = RTC_AUTO_1_SECOND;
rahul_dahiya 0:fb8047b156bb 118 #else /* TARGET_STM32F1 */
rahul_dahiya 0:fb8047b156bb 119 RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
rahul_dahiya 0:fb8047b156bb 120 RtcHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
rahul_dahiya 0:fb8047b156bb 121 RtcHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
rahul_dahiya 0:fb8047b156bb 122 RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
rahul_dahiya 0:fb8047b156bb 123 RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
rahul_dahiya 0:fb8047b156bb 124 RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
rahul_dahiya 0:fb8047b156bb 125 #endif /* TARGET_STM32F1 */
rahul_dahiya 0:fb8047b156bb 126
rahul_dahiya 0:fb8047b156bb 127 if (HAL_RTC_Init(&RtcHandle) != HAL_OK) {
rahul_dahiya 0:fb8047b156bb 128 error("RTC error: RTC initialization failed.");
rahul_dahiya 0:fb8047b156bb 129 }
rahul_dahiya 0:fb8047b156bb 130
rahul_dahiya 0:fb8047b156bb 131 #if DEVICE_LOWPOWERTIMER
rahul_dahiya 0:fb8047b156bb 132
rahul_dahiya 0:fb8047b156bb 133 #if !RTC_LSI
rahul_dahiya 0:fb8047b156bb 134 if (!rtc_isenabled())
rahul_dahiya 0:fb8047b156bb 135 #endif /* !RTC_LSI */
rahul_dahiya 0:fb8047b156bb 136 {
rahul_dahiya 0:fb8047b156bb 137 rtc_write(0);
rahul_dahiya 0:fb8047b156bb 138 }
rahul_dahiya 0:fb8047b156bb 139
rahul_dahiya 0:fb8047b156bb 140 NVIC_ClearPendingIRQ(RTC_WKUP_IRQn);
rahul_dahiya 0:fb8047b156bb 141 NVIC_DisableIRQ(RTC_WKUP_IRQn);
rahul_dahiya 0:fb8047b156bb 142 NVIC_SetVector(RTC_WKUP_IRQn, (uint32_t)RTC_IRQHandler);
rahul_dahiya 0:fb8047b156bb 143 NVIC_EnableIRQ(RTC_WKUP_IRQn);
rahul_dahiya 0:fb8047b156bb 144
rahul_dahiya 0:fb8047b156bb 145 #endif /* DEVICE_LOWPOWERTIMER */
rahul_dahiya 0:fb8047b156bb 146 }
rahul_dahiya 0:fb8047b156bb 147
rahul_dahiya 0:fb8047b156bb 148 void rtc_free(void)
rahul_dahiya 0:fb8047b156bb 149 {
rahul_dahiya 0:fb8047b156bb 150 #if RTC_LSI
rahul_dahiya 0:fb8047b156bb 151 // Enable Power clock
rahul_dahiya 0:fb8047b156bb 152 __HAL_RCC_PWR_CLK_ENABLE();
rahul_dahiya 0:fb8047b156bb 153
rahul_dahiya 0:fb8047b156bb 154 // Enable access to Backup domain
rahul_dahiya 0:fb8047b156bb 155 HAL_PWR_EnableBkUpAccess();
rahul_dahiya 0:fb8047b156bb 156
rahul_dahiya 0:fb8047b156bb 157 // Reset Backup domain
rahul_dahiya 0:fb8047b156bb 158 __HAL_RCC_BACKUPRESET_FORCE();
rahul_dahiya 0:fb8047b156bb 159 __HAL_RCC_BACKUPRESET_RELEASE();
rahul_dahiya 0:fb8047b156bb 160
rahul_dahiya 0:fb8047b156bb 161 // Disable access to Backup domain
rahul_dahiya 0:fb8047b156bb 162 HAL_PWR_DisableBkUpAccess();
rahul_dahiya 0:fb8047b156bb 163 #endif
rahul_dahiya 0:fb8047b156bb 164
rahul_dahiya 0:fb8047b156bb 165 // Disable LSI and LSE clocks
rahul_dahiya 0:fb8047b156bb 166 RCC_OscInitTypeDef RCC_OscInitStruct = {0};
rahul_dahiya 0:fb8047b156bb 167 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
rahul_dahiya 0:fb8047b156bb 168 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
rahul_dahiya 0:fb8047b156bb 169 RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
rahul_dahiya 0:fb8047b156bb 170 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
rahul_dahiya 0:fb8047b156bb 171 HAL_RCC_OscConfig(&RCC_OscInitStruct);
rahul_dahiya 0:fb8047b156bb 172 }
rahul_dahiya 0:fb8047b156bb 173
rahul_dahiya 0:fb8047b156bb 174 /*
rahul_dahiya 0:fb8047b156bb 175 ST RTC_DateTypeDef structure
rahul_dahiya 0:fb8047b156bb 176 WeekDay 1=monday, 2=tuesday, ..., 7=sunday
rahul_dahiya 0:fb8047b156bb 177 Month 0x1=january, 0x2=february, ..., 0x12=december
rahul_dahiya 0:fb8047b156bb 178 Date day of the month 1-31
rahul_dahiya 0:fb8047b156bb 179 Year year 0-99
rahul_dahiya 0:fb8047b156bb 180
rahul_dahiya 0:fb8047b156bb 181 ST RTC_TimeTypeDef structure
rahul_dahiya 0:fb8047b156bb 182 Hours 0-12 if the RTC_HourFormat_12 is selected during init
rahul_dahiya 0:fb8047b156bb 183 0-23 if the RTC_HourFormat_24 is selected during init
rahul_dahiya 0:fb8047b156bb 184 Minutes 0-59
rahul_dahiya 0:fb8047b156bb 185 Seconds 0-59
rahul_dahiya 0:fb8047b156bb 186 TimeFormat RTC_HOURFORMAT12_AM/RTC_HOURFORMAT12_PM
rahul_dahiya 0:fb8047b156bb 187 SubSeconds time unit range between [0-1] Second with [1 Sec / SecondFraction +1] granularity
rahul_dahiya 0:fb8047b156bb 188 SecondFraction range or granularity of Sub Second register content corresponding to Synchronous pre-scaler factor value (PREDIV_S)
rahul_dahiya 0:fb8047b156bb 189 DayLightSaving RTC_DAYLIGHTSAVING_SUB1H/RTC_DAYLIGHTSAVING_ADD1H/RTC_DAYLIGHTSAVING_NONE
rahul_dahiya 0:fb8047b156bb 190 StoreOperation RTC_STOREOPERATION_RESET/RTC_STOREOPERATION_SET
rahul_dahiya 0:fb8047b156bb 191
rahul_dahiya 0:fb8047b156bb 192 struct tm
rahul_dahiya 0:fb8047b156bb 193 tm_sec seconds after the minute 0-61
rahul_dahiya 0:fb8047b156bb 194 tm_min minutes after the hour 0-59
rahul_dahiya 0:fb8047b156bb 195 tm_hour hours since midnight 0-23
rahul_dahiya 0:fb8047b156bb 196 tm_mday day of the month 1-31
rahul_dahiya 0:fb8047b156bb 197 tm_mon months since January 0-11
rahul_dahiya 0:fb8047b156bb 198 tm_year years since 1900
rahul_dahiya 0:fb8047b156bb 199 tm_wday days since Sunday 0-6
rahul_dahiya 0:fb8047b156bb 200 tm_yday days since January 1 0-365
rahul_dahiya 0:fb8047b156bb 201 tm_isdst Daylight Saving Time flag
rahul_dahiya 0:fb8047b156bb 202 */
rahul_dahiya 0:fb8047b156bb 203
rahul_dahiya 0:fb8047b156bb 204 /*
rahul_dahiya 0:fb8047b156bb 205 Information about STM32F0, STM32F2, STM32F3, STM32F4, STM32F7, STM32L0, STM32L1, STM32L4:
rahul_dahiya 0:fb8047b156bb 206 BCD format is used to store the date in the RTC. The year is store on 2 * 4 bits.
rahul_dahiya 0:fb8047b156bb 207 Because the first year is reserved to see if the RTC is init, the supposed range is 01-99.
rahul_dahiya 0:fb8047b156bb 208 1st point is to cover the standard range from 1970 to 2038 (limited by the 32 bits of time_t).
rahul_dahiya 0:fb8047b156bb 209 2nd point is to keep the year 1970 and the leap years synchronized.
rahul_dahiya 0:fb8047b156bb 210
rahul_dahiya 0:fb8047b156bb 211 So by moving it 68 years forward from 1970, it become 1969-2067 which include 1970-2038.
rahul_dahiya 0:fb8047b156bb 212 68 is also a multiple of 4 so it let the leap year synchronized.
rahul_dahiya 0:fb8047b156bb 213
rahul_dahiya 0:fb8047b156bb 214 Information about STM32F1:
rahul_dahiya 0:fb8047b156bb 215 32bit register is used (no BCD format) for the seconds and a software structure to store dates.
rahul_dahiya 0:fb8047b156bb 216 It is then not a problem to not use shifts.
rahul_dahiya 0:fb8047b156bb 217 */
rahul_dahiya 0:fb8047b156bb 218
rahul_dahiya 0:fb8047b156bb 219 time_t rtc_read(void)
rahul_dahiya 0:fb8047b156bb 220 {
rahul_dahiya 0:fb8047b156bb 221 RTC_DateTypeDef dateStruct = {0};
rahul_dahiya 0:fb8047b156bb 222 RTC_TimeTypeDef timeStruct = {0};
rahul_dahiya 0:fb8047b156bb 223 struct tm timeinfo;
rahul_dahiya 0:fb8047b156bb 224
rahul_dahiya 0:fb8047b156bb 225 RtcHandle.Instance = RTC;
rahul_dahiya 0:fb8047b156bb 226
rahul_dahiya 0:fb8047b156bb 227 // Read actual date and time
rahul_dahiya 0:fb8047b156bb 228 // Warning: the time must be read first!
rahul_dahiya 0:fb8047b156bb 229 HAL_RTC_GetTime(&RtcHandle, &timeStruct, RTC_FORMAT_BIN);
rahul_dahiya 0:fb8047b156bb 230 HAL_RTC_GetDate(&RtcHandle, &dateStruct, RTC_FORMAT_BIN);
rahul_dahiya 0:fb8047b156bb 231
rahul_dahiya 0:fb8047b156bb 232 // Setup a tm structure based on the RTC
rahul_dahiya 0:fb8047b156bb 233 /* tm_wday information is ignored by mktime */
rahul_dahiya 0:fb8047b156bb 234 timeinfo.tm_mon = dateStruct.Month - 1;
rahul_dahiya 0:fb8047b156bb 235 timeinfo.tm_mday = dateStruct.Date;
rahul_dahiya 0:fb8047b156bb 236 timeinfo.tm_year = dateStruct.Year + 68;
rahul_dahiya 0:fb8047b156bb 237 timeinfo.tm_hour = timeStruct.Hours;
rahul_dahiya 0:fb8047b156bb 238 timeinfo.tm_min = timeStruct.Minutes;
rahul_dahiya 0:fb8047b156bb 239 timeinfo.tm_sec = timeStruct.Seconds;
rahul_dahiya 0:fb8047b156bb 240 // Daylight Saving Time information is not available
rahul_dahiya 0:fb8047b156bb 241 timeinfo.tm_isdst = -1;
rahul_dahiya 0:fb8047b156bb 242
rahul_dahiya 0:fb8047b156bb 243 // Convert to timestamp
rahul_dahiya 0:fb8047b156bb 244 time_t t = _rtc_mktime(&timeinfo);
rahul_dahiya 0:fb8047b156bb 245
rahul_dahiya 0:fb8047b156bb 246 return t;
rahul_dahiya 0:fb8047b156bb 247 }
rahul_dahiya 0:fb8047b156bb 248
rahul_dahiya 0:fb8047b156bb 249 void rtc_write(time_t t)
rahul_dahiya 0:fb8047b156bb 250 {
rahul_dahiya 0:fb8047b156bb 251 RTC_DateTypeDef dateStruct = {0};
rahul_dahiya 0:fb8047b156bb 252 RTC_TimeTypeDef timeStruct = {0};
rahul_dahiya 0:fb8047b156bb 253
rahul_dahiya 0:fb8047b156bb 254 RtcHandle.Instance = RTC;
rahul_dahiya 0:fb8047b156bb 255
rahul_dahiya 0:fb8047b156bb 256 // Convert the time into a tm
rahul_dahiya 0:fb8047b156bb 257 struct tm timeinfo;
rahul_dahiya 0:fb8047b156bb 258 if (_rtc_localtime(t, &timeinfo) == false) {
rahul_dahiya 0:fb8047b156bb 259 return;
rahul_dahiya 0:fb8047b156bb 260 }
rahul_dahiya 0:fb8047b156bb 261
rahul_dahiya 0:fb8047b156bb 262 // Fill RTC structures
rahul_dahiya 0:fb8047b156bb 263 if (timeinfo.tm_wday == 0) {
rahul_dahiya 0:fb8047b156bb 264 dateStruct.WeekDay = 7;
rahul_dahiya 0:fb8047b156bb 265 } else {
rahul_dahiya 0:fb8047b156bb 266 dateStruct.WeekDay = timeinfo.tm_wday;
rahul_dahiya 0:fb8047b156bb 267 }
rahul_dahiya 0:fb8047b156bb 268 dateStruct.Month = timeinfo.tm_mon + 1;
rahul_dahiya 0:fb8047b156bb 269 dateStruct.Date = timeinfo.tm_mday;
rahul_dahiya 0:fb8047b156bb 270 dateStruct.Year = timeinfo.tm_year - 68;
rahul_dahiya 0:fb8047b156bb 271 timeStruct.Hours = timeinfo.tm_hour;
rahul_dahiya 0:fb8047b156bb 272 timeStruct.Minutes = timeinfo.tm_min;
rahul_dahiya 0:fb8047b156bb 273 timeStruct.Seconds = timeinfo.tm_sec;
rahul_dahiya 0:fb8047b156bb 274
rahul_dahiya 0:fb8047b156bb 275 #if !(TARGET_STM32F1)
rahul_dahiya 0:fb8047b156bb 276 timeStruct.TimeFormat = RTC_HOURFORMAT_24;
rahul_dahiya 0:fb8047b156bb 277 timeStruct.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
rahul_dahiya 0:fb8047b156bb 278 timeStruct.StoreOperation = RTC_STOREOPERATION_RESET;
rahul_dahiya 0:fb8047b156bb 279 #endif /* TARGET_STM32F1 */
rahul_dahiya 0:fb8047b156bb 280
rahul_dahiya 0:fb8047b156bb 281 // Change the RTC current date/time
rahul_dahiya 0:fb8047b156bb 282 HAL_RTC_SetDate(&RtcHandle, &dateStruct, RTC_FORMAT_BIN);
rahul_dahiya 0:fb8047b156bb 283 HAL_RTC_SetTime(&RtcHandle, &timeStruct, RTC_FORMAT_BIN);
rahul_dahiya 0:fb8047b156bb 284 }
rahul_dahiya 0:fb8047b156bb 285
rahul_dahiya 0:fb8047b156bb 286 int rtc_isenabled(void)
rahul_dahiya 0:fb8047b156bb 287 {
rahul_dahiya 0:fb8047b156bb 288 #if !(TARGET_STM32F1)
rahul_dahiya 0:fb8047b156bb 289 return ( ((RTC->ISR & RTC_ISR_INITS) == RTC_ISR_INITS) && ((RTC->ISR & RTC_ISR_RSF) == RTC_ISR_RSF) );
rahul_dahiya 0:fb8047b156bb 290 #else /* TARGET_STM32F1 */
rahul_dahiya 0:fb8047b156bb 291 return ((RTC->CRL & RTC_CRL_RSF) == RTC_CRL_RSF);
rahul_dahiya 0:fb8047b156bb 292 #endif /* TARGET_STM32F1 */
rahul_dahiya 0:fb8047b156bb 293 }
rahul_dahiya 0:fb8047b156bb 294
rahul_dahiya 0:fb8047b156bb 295 #if DEVICE_LOWPOWERTIMER
rahul_dahiya 0:fb8047b156bb 296
rahul_dahiya 0:fb8047b156bb 297 static void RTC_IRQHandler(void)
rahul_dahiya 0:fb8047b156bb 298 {
rahul_dahiya 0:fb8047b156bb 299 /* Update HAL state */
rahul_dahiya 0:fb8047b156bb 300 HAL_RTCEx_WakeUpTimerIRQHandler(&RtcHandle);
rahul_dahiya 0:fb8047b156bb 301 /* In case of registered handler, call it. */
rahul_dahiya 0:fb8047b156bb 302 if (irq_handler) {
rahul_dahiya 0:fb8047b156bb 303 irq_handler();
rahul_dahiya 0:fb8047b156bb 304 }
rahul_dahiya 0:fb8047b156bb 305 }
rahul_dahiya 0:fb8047b156bb 306
rahul_dahiya 0:fb8047b156bb 307 void rtc_set_irq_handler(uint32_t handler)
rahul_dahiya 0:fb8047b156bb 308 {
rahul_dahiya 0:fb8047b156bb 309 irq_handler = (void (*)(void))handler;
rahul_dahiya 0:fb8047b156bb 310 }
rahul_dahiya 0:fb8047b156bb 311
rahul_dahiya 0:fb8047b156bb 312 uint32_t rtc_read_subseconds(void)
rahul_dahiya 0:fb8047b156bb 313 {
rahul_dahiya 0:fb8047b156bb 314 return 1000000.f * ((double)(RTC_SYNCH_PREDIV - RTC->SSR) / (RTC_SYNCH_PREDIV + 1));
rahul_dahiya 0:fb8047b156bb 315 }
rahul_dahiya 0:fb8047b156bb 316
rahul_dahiya 0:fb8047b156bb 317 void rtc_set_wake_up_timer(uint32_t delta)
rahul_dahiya 0:fb8047b156bb 318 {
rahul_dahiya 0:fb8047b156bb 319 uint32_t wake_up_counter = delta / (2000000 / RTC_CLOCK);
rahul_dahiya 0:fb8047b156bb 320
rahul_dahiya 0:fb8047b156bb 321 if (HAL_RTCEx_SetWakeUpTimer_IT(&RtcHandle, wake_up_counter,
rahul_dahiya 0:fb8047b156bb 322 RTC_WAKEUPCLOCK_RTCCLK_DIV2) != HAL_OK) {
rahul_dahiya 0:fb8047b156bb 323 error("Set wake up timer failed\n");
rahul_dahiya 0:fb8047b156bb 324 }
rahul_dahiya 0:fb8047b156bb 325 }
rahul_dahiya 0:fb8047b156bb 326
rahul_dahiya 0:fb8047b156bb 327 void rtc_deactivate_wake_up_timer(void)
rahul_dahiya 0:fb8047b156bb 328 {
rahul_dahiya 0:fb8047b156bb 329 HAL_RTCEx_DeactivateWakeUpTimer(&RtcHandle);
rahul_dahiya 0:fb8047b156bb 330 }
rahul_dahiya 0:fb8047b156bb 331
rahul_dahiya 0:fb8047b156bb 332 void rtc_synchronize(void)
rahul_dahiya 0:fb8047b156bb 333 {
rahul_dahiya 0:fb8047b156bb 334 HAL_RTC_WaitForSynchro(&RtcHandle);
rahul_dahiya 0:fb8047b156bb 335 }
rahul_dahiya 0:fb8047b156bb 336 #endif /* DEVICE_LOWPOWERTIMER */
rahul_dahiya 0:fb8047b156bb 337
rahul_dahiya 0:fb8047b156bb 338 #endif /* DEVICE_RTC */