Andrew SaLoutos / mbed-dev-STM-lean

From Ben Katz mbed-dev library. Removed unnecessary target files to reduce the overall size by a factor of 10 to make it easier to import into the online IDE.

Dependents:   motor_driver motor_driver_screaming_fix

targets/TARGET_STM/rtc_api.c@0:083111ae2a11, 2020-11-26 (annotated)

Committer:
saloutos
Date:
Thu Nov 26 04:08:56 2020 +0000
Revision:
0:083111ae2a11
first commit of leaned mbed dev lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
saloutos 0:083111ae2a11 1 /* mbed Microcontroller Library
saloutos 0:083111ae2a11 2 *******************************************************************************
saloutos 0:083111ae2a11 3 * Copyright (c) 2016, STMicroelectronics
saloutos 0:083111ae2a11 4 * All rights reserved.
saloutos 0:083111ae2a11 5 *
saloutos 0:083111ae2a11 6 * Redistribution and use in source and binary forms, with or without
saloutos 0:083111ae2a11 7 * modification, are permitted provided that the following conditions are met:
saloutos 0:083111ae2a11 8 *
saloutos 0:083111ae2a11 9 * 1. Redistributions of source code must retain the above copyright notice,
saloutos 0:083111ae2a11 10 * this list of conditions and the following disclaimer.
saloutos 0:083111ae2a11 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
saloutos 0:083111ae2a11 12 * this list of conditions and the following disclaimer in the documentation
saloutos 0:083111ae2a11 13 * and/or other materials provided with the distribution.
saloutos 0:083111ae2a11 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
saloutos 0:083111ae2a11 15 * may be used to endorse or promote products derived from this software
saloutos 0:083111ae2a11 16 * without specific prior written permission.
saloutos 0:083111ae2a11 17 *
saloutos 0:083111ae2a11 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
saloutos 0:083111ae2a11 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
saloutos 0:083111ae2a11 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
saloutos 0:083111ae2a11 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
saloutos 0:083111ae2a11 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
saloutos 0:083111ae2a11 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
saloutos 0:083111ae2a11 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
saloutos 0:083111ae2a11 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
saloutos 0:083111ae2a11 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
saloutos 0:083111ae2a11 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
saloutos 0:083111ae2a11 28 *******************************************************************************
saloutos 0:083111ae2a11 29 */
saloutos 0:083111ae2a11 30 #if DEVICE_RTC
saloutos 0:083111ae2a11 31
saloutos 0:083111ae2a11 32 #include "rtc_api.h"
saloutos 0:083111ae2a11 33 #include "rtc_api_hal.h"
saloutos 0:083111ae2a11 34 #include "mbed_error.h"
saloutos 0:083111ae2a11 35 #include "mbed_mktime.h"
saloutos 0:083111ae2a11 36
saloutos 0:083111ae2a11 37 static RTC_HandleTypeDef RtcHandle;
saloutos 0:083111ae2a11 38
saloutos 0:083111ae2a11 39 #if RTC_LSI
saloutos 0:083111ae2a11 40 #define RTC_CLOCK LSI_VALUE
saloutos 0:083111ae2a11 41 #else
saloutos 0:083111ae2a11 42 #define RTC_CLOCK LSE_VALUE
saloutos 0:083111ae2a11 43 #endif
saloutos 0:083111ae2a11 44
saloutos 0:083111ae2a11 45 #if DEVICE_LOWPOWERTIMER
saloutos 0:083111ae2a11 46 #define RTC_ASYNCH_PREDIV ((RTC_CLOCK - 1) / 0x8000)
saloutos 0:083111ae2a11 47 #define RTC_SYNCH_PREDIV (RTC_CLOCK / (RTC_ASYNCH_PREDIV + 1) - 1)
saloutos 0:083111ae2a11 48 #else
saloutos 0:083111ae2a11 49 #define RTC_ASYNCH_PREDIV (0x007F)
saloutos 0:083111ae2a11 50 #define RTC_SYNCH_PREDIV (RTC_CLOCK / (RTC_ASYNCH_PREDIV + 1) - 1)
saloutos 0:083111ae2a11 51 #endif
saloutos 0:083111ae2a11 52
saloutos 0:083111ae2a11 53 #if DEVICE_LOWPOWERTIMER
saloutos 0:083111ae2a11 54 static void (*irq_handler)(void);
saloutos 0:083111ae2a11 55 static void RTC_IRQHandler(void);
saloutos 0:083111ae2a11 56 #endif
saloutos 0:083111ae2a11 57
saloutos 0:083111ae2a11 58 void rtc_init(void)
saloutos 0:083111ae2a11 59 {
saloutos 0:083111ae2a11 60 RCC_OscInitTypeDef RCC_OscInitStruct;
saloutos 0:083111ae2a11 61 RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
saloutos 0:083111ae2a11 62
saloutos 0:083111ae2a11 63 // Enable access to Backup domain
saloutos 0:083111ae2a11 64 HAL_PWR_EnableBkUpAccess();
saloutos 0:083111ae2a11 65
saloutos 0:083111ae2a11 66 RtcHandle.Instance = RTC;
saloutos 0:083111ae2a11 67
saloutos 0:083111ae2a11 68 #if !RTC_LSI
saloutos 0:083111ae2a11 69 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
saloutos 0:083111ae2a11 70 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
saloutos 0:083111ae2a11 71 RCC_OscInitStruct.LSEState = RCC_LSE_ON;
saloutos 0:083111ae2a11 72 RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
saloutos 0:083111ae2a11 73
saloutos 0:083111ae2a11 74 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) == HAL_OK) {
saloutos 0:083111ae2a11 75 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSE);
saloutos 0:083111ae2a11 76 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSE);
saloutos 0:083111ae2a11 77 } else {
saloutos 0:083111ae2a11 78 error("Cannot initialize RTC with LSE\n");
saloutos 0:083111ae2a11 79 }
saloutos 0:083111ae2a11 80
saloutos 0:083111ae2a11 81 PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
saloutos 0:083111ae2a11 82 PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
saloutos 0:083111ae2a11 83 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) {
saloutos 0:083111ae2a11 84 error("PeriphClkInitStruct RTC failed with LSE\n");
saloutos 0:083111ae2a11 85 }
saloutos 0:083111ae2a11 86 #else /* !RTC_LSI */
saloutos 0:083111ae2a11 87 __HAL_RCC_PWR_CLK_ENABLE();
saloutos 0:083111ae2a11 88
saloutos 0:083111ae2a11 89 // Reset Backup domain
saloutos 0:083111ae2a11 90 __HAL_RCC_BACKUPRESET_FORCE();
saloutos 0:083111ae2a11 91 __HAL_RCC_BACKUPRESET_RELEASE();
saloutos 0:083111ae2a11 92
saloutos 0:083111ae2a11 93 // Enable LSI clock
saloutos 0:083111ae2a11 94 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI;
saloutos 0:083111ae2a11 95 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
saloutos 0:083111ae2a11 96 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
saloutos 0:083111ae2a11 97 RCC_OscInitStruct.LSIState = RCC_LSI_ON;
saloutos 0:083111ae2a11 98 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
saloutos 0:083111ae2a11 99 error("Cannot initialize RTC with LSI\n");
saloutos 0:083111ae2a11 100 }
saloutos 0:083111ae2a11 101
saloutos 0:083111ae2a11 102 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSI);
saloutos 0:083111ae2a11 103 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
saloutos 0:083111ae2a11 104
saloutos 0:083111ae2a11 105 PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
saloutos 0:083111ae2a11 106 PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
saloutos 0:083111ae2a11 107 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) {
saloutos 0:083111ae2a11 108 error("PeriphClkInitStruct RTC failed with LSI\n");
saloutos 0:083111ae2a11 109 }
saloutos 0:083111ae2a11 110 #endif /* !RTC_LSI */
saloutos 0:083111ae2a11 111
saloutos 0:083111ae2a11 112 // Enable RTC
saloutos 0:083111ae2a11 113 __HAL_RCC_RTC_ENABLE();
saloutos 0:083111ae2a11 114
saloutos 0:083111ae2a11 115 #if TARGET_STM32F1
saloutos 0:083111ae2a11 116 RtcHandle.Init.AsynchPrediv = RTC_AUTO_1_SECOND;
saloutos 0:083111ae2a11 117 #else /* TARGET_STM32F1 */
saloutos 0:083111ae2a11 118 RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
saloutos 0:083111ae2a11 119 RtcHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
saloutos 0:083111ae2a11 120 RtcHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
saloutos 0:083111ae2a11 121 RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
saloutos 0:083111ae2a11 122 RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
saloutos 0:083111ae2a11 123 RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
saloutos 0:083111ae2a11 124 #endif /* TARGET_STM32F1 */
saloutos 0:083111ae2a11 125
saloutos 0:083111ae2a11 126 if (HAL_RTC_Init(&RtcHandle) != HAL_OK) {
saloutos 0:083111ae2a11 127 error("RTC error: RTC initialization failed.");
saloutos 0:083111ae2a11 128 }
saloutos 0:083111ae2a11 129
saloutos 0:083111ae2a11 130 #if DEVICE_LOWPOWERTIMER
saloutos 0:083111ae2a11 131
saloutos 0:083111ae2a11 132 #if !RTC_LSI
saloutos 0:083111ae2a11 133 if (!rtc_isenabled())
saloutos 0:083111ae2a11 134 #endif /* !RTC_LSI */
saloutos 0:083111ae2a11 135 {
saloutos 0:083111ae2a11 136 rtc_write(0);
saloutos 0:083111ae2a11 137 }
saloutos 0:083111ae2a11 138
saloutos 0:083111ae2a11 139 NVIC_ClearPendingIRQ(RTC_WKUP_IRQn);
saloutos 0:083111ae2a11 140 NVIC_DisableIRQ(RTC_WKUP_IRQn);
saloutos 0:083111ae2a11 141 NVIC_SetVector(RTC_WKUP_IRQn, (uint32_t)RTC_IRQHandler);
saloutos 0:083111ae2a11 142 NVIC_EnableIRQ(RTC_WKUP_IRQn);
saloutos 0:083111ae2a11 143
saloutos 0:083111ae2a11 144 #endif /* DEVICE_LOWPOWERTIMER */
saloutos 0:083111ae2a11 145 }
saloutos 0:083111ae2a11 146
saloutos 0:083111ae2a11 147 void rtc_free(void)
saloutos 0:083111ae2a11 148 {
saloutos 0:083111ae2a11 149 #if RTC_LSI
saloutos 0:083111ae2a11 150 // Enable Power clock
saloutos 0:083111ae2a11 151 __HAL_RCC_PWR_CLK_ENABLE();
saloutos 0:083111ae2a11 152
saloutos 0:083111ae2a11 153 // Enable access to Backup domain
saloutos 0:083111ae2a11 154 HAL_PWR_EnableBkUpAccess();
saloutos 0:083111ae2a11 155
saloutos 0:083111ae2a11 156 // Reset Backup domain
saloutos 0:083111ae2a11 157 __HAL_RCC_BACKUPRESET_FORCE();
saloutos 0:083111ae2a11 158 __HAL_RCC_BACKUPRESET_RELEASE();
saloutos 0:083111ae2a11 159
saloutos 0:083111ae2a11 160 // Disable access to Backup domain
saloutos 0:083111ae2a11 161 HAL_PWR_DisableBkUpAccess();
saloutos 0:083111ae2a11 162 #endif
saloutos 0:083111ae2a11 163
saloutos 0:083111ae2a11 164 // Disable LSI and LSE clocks
saloutos 0:083111ae2a11 165 RCC_OscInitTypeDef RCC_OscInitStruct;
saloutos 0:083111ae2a11 166 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
saloutos 0:083111ae2a11 167 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
saloutos 0:083111ae2a11 168 RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
saloutos 0:083111ae2a11 169 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
saloutos 0:083111ae2a11 170 HAL_RCC_OscConfig(&RCC_OscInitStruct);
saloutos 0:083111ae2a11 171 }
saloutos 0:083111ae2a11 172
saloutos 0:083111ae2a11 173 /*
saloutos 0:083111ae2a11 174 ST RTC_DateTypeDef structure
saloutos 0:083111ae2a11 175 WeekDay 1=monday, 2=tuesday, ..., 7=sunday
saloutos 0:083111ae2a11 176 Month 0x1=january, 0x2=february, ..., 0x12=december
saloutos 0:083111ae2a11 177 Date day of the month 1-31
saloutos 0:083111ae2a11 178 Year year 0-99
saloutos 0:083111ae2a11 179
saloutos 0:083111ae2a11 180 ST RTC_TimeTypeDef structure
saloutos 0:083111ae2a11 181 Hours 0-12 if the RTC_HourFormat_12 is selected during init
saloutos 0:083111ae2a11 182 0-23 if the RTC_HourFormat_24 is selected during init
saloutos 0:083111ae2a11 183 Minutes 0-59
saloutos 0:083111ae2a11 184 Seconds 0-59
saloutos 0:083111ae2a11 185 TimeFormat RTC_HOURFORMAT12_AM/RTC_HOURFORMAT12_PM
saloutos 0:083111ae2a11 186 SubSeconds time unit range between [0-1] Second with [1 Sec / SecondFraction +1] granularity
saloutos 0:083111ae2a11 187 SecondFraction range or granularity of Sub Second register content corresponding to Synchronous pre-scaler factor value (PREDIV_S)
saloutos 0:083111ae2a11 188 DayLightSaving RTC_DAYLIGHTSAVING_SUB1H/RTC_DAYLIGHTSAVING_ADD1H/RTC_DAYLIGHTSAVING_NONE
saloutos 0:083111ae2a11 189 StoreOperation RTC_STOREOPERATION_RESET/RTC_STOREOPERATION_SET
saloutos 0:083111ae2a11 190
saloutos 0:083111ae2a11 191 struct tm
saloutos 0:083111ae2a11 192 tm_sec seconds after the minute 0-61
saloutos 0:083111ae2a11 193 tm_min minutes after the hour 0-59
saloutos 0:083111ae2a11 194 tm_hour hours since midnight 0-23
saloutos 0:083111ae2a11 195 tm_mday day of the month 1-31
saloutos 0:083111ae2a11 196 tm_mon months since January 0-11
saloutos 0:083111ae2a11 197 tm_year years since 1900
saloutos 0:083111ae2a11 198 tm_wday days since Sunday 0-6
saloutos 0:083111ae2a11 199 tm_yday days since January 1 0-365
saloutos 0:083111ae2a11 200 tm_isdst Daylight Saving Time flag
saloutos 0:083111ae2a11 201 */
saloutos 0:083111ae2a11 202
saloutos 0:083111ae2a11 203 /*
saloutos 0:083111ae2a11 204 Information about STM32F0, STM32F2, STM32F3, STM32F4, STM32F7, STM32L0, STM32L1, STM32L4:
saloutos 0:083111ae2a11 205 BCD format is used to store the date in the RTC. The year is store on 2 * 4 bits.
saloutos 0:083111ae2a11 206 Because the first year is reserved to see if the RTC is init, the supposed range is 01-99.
saloutos 0:083111ae2a11 207 1st point is to cover the standard range from 1970 to 2038 (limited by the 32 bits of time_t).
saloutos 0:083111ae2a11 208 2nd point is to keep the year 1970 and the leap years synchronized.
saloutos 0:083111ae2a11 209
saloutos 0:083111ae2a11 210 So by moving it 68 years forward from 1970, it become 1969-2067 which include 1970-2038.
saloutos 0:083111ae2a11 211 68 is also a multiple of 4 so it let the leap year synchronized.
saloutos 0:083111ae2a11 212
saloutos 0:083111ae2a11 213 Information about STM32F1:
saloutos 0:083111ae2a11 214 32bit register is used (no BCD format) for the seconds and a software structure to store dates.
saloutos 0:083111ae2a11 215 It is then not a problem to not use shifts.
saloutos 0:083111ae2a11 216 */
saloutos 0:083111ae2a11 217
saloutos 0:083111ae2a11 218 time_t rtc_read(void)
saloutos 0:083111ae2a11 219 {
saloutos 0:083111ae2a11 220 RTC_DateTypeDef dateStruct;
saloutos 0:083111ae2a11 221 RTC_TimeTypeDef timeStruct;
saloutos 0:083111ae2a11 222 struct tm timeinfo;
saloutos 0:083111ae2a11 223
saloutos 0:083111ae2a11 224 RtcHandle.Instance = RTC;
saloutos 0:083111ae2a11 225
saloutos 0:083111ae2a11 226 // Read actual date and time
saloutos 0:083111ae2a11 227 // Warning: the time must be read first!
saloutos 0:083111ae2a11 228 HAL_RTC_GetTime(&RtcHandle, &timeStruct, RTC_FORMAT_BIN);
saloutos 0:083111ae2a11 229 HAL_RTC_GetDate(&RtcHandle, &dateStruct, RTC_FORMAT_BIN);
saloutos 0:083111ae2a11 230
saloutos 0:083111ae2a11 231 // Setup a tm structure based on the RTC
saloutos 0:083111ae2a11 232 /* tm_wday information is ignored by mktime */
saloutos 0:083111ae2a11 233 timeinfo.tm_mon = dateStruct.Month - 1;
saloutos 0:083111ae2a11 234 timeinfo.tm_mday = dateStruct.Date;
saloutos 0:083111ae2a11 235 timeinfo.tm_year = dateStruct.Year + 68;
saloutos 0:083111ae2a11 236 timeinfo.tm_hour = timeStruct.Hours;
saloutos 0:083111ae2a11 237 timeinfo.tm_min = timeStruct.Minutes;
saloutos 0:083111ae2a11 238 timeinfo.tm_sec = timeStruct.Seconds;
saloutos 0:083111ae2a11 239 // Daylight Saving Time information is not available
saloutos 0:083111ae2a11 240 timeinfo.tm_isdst = -1;
saloutos 0:083111ae2a11 241
saloutos 0:083111ae2a11 242 // Convert to timestamp
saloutos 0:083111ae2a11 243 time_t t = _rtc_mktime(&timeinfo);
saloutos 0:083111ae2a11 244
saloutos 0:083111ae2a11 245 return t;
saloutos 0:083111ae2a11 246 }
saloutos 0:083111ae2a11 247
saloutos 0:083111ae2a11 248 void rtc_write(time_t t)
saloutos 0:083111ae2a11 249 {
saloutos 0:083111ae2a11 250 RTC_DateTypeDef dateStruct;
saloutos 0:083111ae2a11 251 RTC_TimeTypeDef timeStruct;
saloutos 0:083111ae2a11 252
saloutos 0:083111ae2a11 253 RtcHandle.Instance = RTC;
saloutos 0:083111ae2a11 254
saloutos 0:083111ae2a11 255 // Convert the time into a tm
saloutos 0:083111ae2a11 256 struct tm timeinfo;
saloutos 0:083111ae2a11 257 if (_rtc_localtime(t, &timeinfo) == false) {
saloutos 0:083111ae2a11 258 return;
saloutos 0:083111ae2a11 259 }
saloutos 0:083111ae2a11 260
saloutos 0:083111ae2a11 261 // Fill RTC structures
saloutos 0:083111ae2a11 262 if (timeinfo.tm_wday == 0) {
saloutos 0:083111ae2a11 263 dateStruct.WeekDay = 7;
saloutos 0:083111ae2a11 264 } else {
saloutos 0:083111ae2a11 265 dateStruct.WeekDay = timeinfo.tm_wday;
saloutos 0:083111ae2a11 266 }
saloutos 0:083111ae2a11 267 dateStruct.Month = timeinfo.tm_mon + 1;
saloutos 0:083111ae2a11 268 dateStruct.Date = timeinfo.tm_mday;
saloutos 0:083111ae2a11 269 dateStruct.Year = timeinfo.tm_year - 68;
saloutos 0:083111ae2a11 270 timeStruct.Hours = timeinfo.tm_hour;
saloutos 0:083111ae2a11 271 timeStruct.Minutes = timeinfo.tm_min;
saloutos 0:083111ae2a11 272 timeStruct.Seconds = timeinfo.tm_sec;
saloutos 0:083111ae2a11 273
saloutos 0:083111ae2a11 274 #if !(TARGET_STM32F1)
saloutos 0:083111ae2a11 275 timeStruct.TimeFormat = RTC_HOURFORMAT_24;
saloutos 0:083111ae2a11 276 timeStruct.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
saloutos 0:083111ae2a11 277 timeStruct.StoreOperation = RTC_STOREOPERATION_RESET;
saloutos 0:083111ae2a11 278 #endif /* TARGET_STM32F1 */
saloutos 0:083111ae2a11 279
saloutos 0:083111ae2a11 280 // Change the RTC current date/time
saloutos 0:083111ae2a11 281 HAL_RTC_SetDate(&RtcHandle, &dateStruct, RTC_FORMAT_BIN);
saloutos 0:083111ae2a11 282 HAL_RTC_SetTime(&RtcHandle, &timeStruct, RTC_FORMAT_BIN);
saloutos 0:083111ae2a11 283 }
saloutos 0:083111ae2a11 284
saloutos 0:083111ae2a11 285 int rtc_isenabled(void)
saloutos 0:083111ae2a11 286 {
saloutos 0:083111ae2a11 287 #if !(TARGET_STM32F1)
saloutos 0:083111ae2a11 288 return ( ((RTC->ISR & RTC_ISR_INITS) == RTC_ISR_INITS) && ((RTC->ISR & RTC_ISR_RSF) == RTC_ISR_RSF) );
saloutos 0:083111ae2a11 289 #else /* TARGET_STM32F1 */
saloutos 0:083111ae2a11 290 return ((RTC->CRL & RTC_CRL_RSF) == RTC_CRL_RSF);
saloutos 0:083111ae2a11 291 #endif /* TARGET_STM32F1 */
saloutos 0:083111ae2a11 292 }
saloutos 0:083111ae2a11 293
saloutos 0:083111ae2a11 294 #if DEVICE_LOWPOWERTIMER
saloutos 0:083111ae2a11 295
saloutos 0:083111ae2a11 296 static void RTC_IRQHandler(void)
saloutos 0:083111ae2a11 297 {
saloutos 0:083111ae2a11 298 HAL_RTCEx_WakeUpTimerIRQHandler(&RtcHandle);
saloutos 0:083111ae2a11 299 }
saloutos 0:083111ae2a11 300
saloutos 0:083111ae2a11 301 void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *hrtc)
saloutos 0:083111ae2a11 302 {
saloutos 0:083111ae2a11 303 if (irq_handler) {
saloutos 0:083111ae2a11 304 // Fire the user callback
saloutos 0:083111ae2a11 305 irq_handler();
saloutos 0:083111ae2a11 306 }
saloutos 0:083111ae2a11 307 }
saloutos 0:083111ae2a11 308
saloutos 0:083111ae2a11 309 void rtc_set_irq_handler(uint32_t handler)
saloutos 0:083111ae2a11 310 {
saloutos 0:083111ae2a11 311 irq_handler = (void (*)(void))handler;
saloutos 0:083111ae2a11 312 }
saloutos 0:083111ae2a11 313
saloutos 0:083111ae2a11 314 uint32_t rtc_read_subseconds(void)
saloutos 0:083111ae2a11 315 {
saloutos 0:083111ae2a11 316 return 1000000.f * ((double)(RTC_SYNCH_PREDIV - RTC->SSR) / (RTC_SYNCH_PREDIV + 1));
saloutos 0:083111ae2a11 317 }
saloutos 0:083111ae2a11 318
saloutos 0:083111ae2a11 319 void rtc_set_wake_up_timer(uint32_t delta)
saloutos 0:083111ae2a11 320 {
saloutos 0:083111ae2a11 321 uint32_t wake_up_counter = delta / (2000000 / RTC_CLOCK);
saloutos 0:083111ae2a11 322
saloutos 0:083111ae2a11 323 if (HAL_RTCEx_SetWakeUpTimer_IT(&RtcHandle, wake_up_counter,
saloutos 0:083111ae2a11 324 RTC_WAKEUPCLOCK_RTCCLK_DIV2) != HAL_OK) {
saloutos 0:083111ae2a11 325 error("Set wake up timer failed\n");
saloutos 0:083111ae2a11 326 }
saloutos 0:083111ae2a11 327 }
saloutos 0:083111ae2a11 328
saloutos 0:083111ae2a11 329 void rtc_deactivate_wake_up_timer(void)
saloutos 0:083111ae2a11 330 {
saloutos 0:083111ae2a11 331 HAL_RTCEx_DeactivateWakeUpTimer(&RtcHandle);
saloutos 0:083111ae2a11 332 }
saloutos 0:083111ae2a11 333
saloutos 0:083111ae2a11 334 void rtc_synchronize(void)
saloutos 0:083111ae2a11 335 {
saloutos 0:083111ae2a11 336 HAL_RTC_WaitForSynchro(&RtcHandle);
saloutos 0:083111ae2a11 337 }
saloutos 0:083111ae2a11 338 #endif /* DEVICE_LOWPOWERTIMER */
saloutos 0:083111ae2a11 339
saloutos 0:083111ae2a11 340 #endif /* DEVICE_RTC */