Krzysztof Sitko / mbed-dev-STM32F031K6

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of mbed-dev by mbed official

targets/hal/TARGET_STM/TARGET_STM32F7/rtc_api.c@78:fcc37a1ad8f5, 2016-03-01 (annotated)

Committer:
mbed_official
Date:
Tue Mar 01 07:15:10 2016 +0000
Revision:
78:fcc37a1ad8f5
Parent:
74:9322579e4309
Child:
104:173fc4c67e73
Synchronized with git revision 2b8c9ef4fba5ff935a3e4ee7ade25262b8f0d0b3



Full URL: https://github.com/mbedmicro/mbed/commit/2b8c9ef4fba5ff935a3e4ee7ade25262b8f0d0b3/



Adding NOT_SUPPORTED errors to tests

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 *******************************************************************************
bogdanm 0:9b334a45a8ff 3 * Copyright (c) 2015, STMicroelectronics
bogdanm 0:9b334a45a8ff 4 * All rights reserved.
bogdanm 0:9b334a45a8ff 5 *
bogdanm 0:9b334a45a8ff 6 * Redistribution and use in source and binary forms, with or without
bogdanm 0:9b334a45a8ff 7 * modification, are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 8 *
bogdanm 0:9b334a45a8ff 9 * 1. Redistributions of source code must retain the above copyright notice,
bogdanm 0:9b334a45a8ff 10 * this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
bogdanm 0:9b334a45a8ff 12 * this list of conditions and the following disclaimer in the documentation
bogdanm 0:9b334a45a8ff 13 * and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
bogdanm 0:9b334a45a8ff 15 * may be used to endorse or promote products derived from this software
bogdanm 0:9b334a45a8ff 16 * without specific prior written permission.
bogdanm 0:9b334a45a8ff 17 *
bogdanm 0:9b334a45a8ff 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bogdanm 0:9b334a45a8ff 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bogdanm 0:9b334a45a8ff 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bogdanm 0:9b334a45a8ff 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bogdanm 0:9b334a45a8ff 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bogdanm 0:9b334a45a8ff 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bogdanm 0:9b334a45a8ff 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bogdanm 0:9b334a45a8ff 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 28 *******************************************************************************
bogdanm 0:9b334a45a8ff 29 */
bogdanm 0:9b334a45a8ff 30 #include "rtc_api.h"
bogdanm 0:9b334a45a8ff 31
bogdanm 0:9b334a45a8ff 32 #if DEVICE_RTC
bogdanm 0:9b334a45a8ff 33
bogdanm 0:9b334a45a8ff 34 #include "mbed_error.h"
bogdanm 0:9b334a45a8ff 35
bogdanm 0:9b334a45a8ff 36 static RTC_HandleTypeDef RtcHandle;
bogdanm 0:9b334a45a8ff 37
bogdanm 0:9b334a45a8ff 38 void rtc_init(void)
bogdanm 0:9b334a45a8ff 39 {
bogdanm 0:9b334a45a8ff 40 RCC_OscInitTypeDef RCC_OscInitStruct;
bogdanm 0:9b334a45a8ff 41 uint32_t rtc_freq = 0;
bogdanm 0:9b334a45a8ff 42
mbed_official 78:fcc37a1ad8f5 43 RtcHandle.Instance = RTC;
mbed_official 78:fcc37a1ad8f5 44
mbed_official 78:fcc37a1ad8f5 45 // Enable Power clock
mbed_official 78:fcc37a1ad8f5 46 __PWR_CLK_ENABLE();
mbed_official 4:4a8e88c1ef9e 47
mbed_official 78:fcc37a1ad8f5 48 // Enable access to Backup domain
mbed_official 78:fcc37a1ad8f5 49 HAL_PWR_EnableBkUpAccess();
mbed_official 78:fcc37a1ad8f5 50
mbed_official 78:fcc37a1ad8f5 51 // Reset Backup domain
mbed_official 78:fcc37a1ad8f5 52 __HAL_RCC_BACKUPRESET_FORCE();
mbed_official 78:fcc37a1ad8f5 53 __HAL_RCC_BACKUPRESET_RELEASE();
bogdanm 0:9b334a45a8ff 54
mbed_official 78:fcc37a1ad8f5 55 // Enable LSE Oscillator
mbed_official 78:fcc37a1ad8f5 56 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
mbed_official 78:fcc37a1ad8f5 57 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
mbed_official 78:fcc37a1ad8f5 58 RCC_OscInitStruct.LSEState = RCC_LSE_ON; // External 32.768 kHz clock on OSC_IN/OSC_OUT
mbed_official 78:fcc37a1ad8f5 59 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) == HAL_OK) {
mbed_official 78:fcc37a1ad8f5 60 // Connect LSE to RTC
mbed_official 78:fcc37a1ad8f5 61 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSE);
mbed_official 78:fcc37a1ad8f5 62 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSE);
mbed_official 78:fcc37a1ad8f5 63 rtc_freq = LSE_VALUE;
mbed_official 78:fcc37a1ad8f5 64 } else {
mbed_official 78:fcc37a1ad8f5 65 // Enable LSI clock
mbed_official 78:fcc37a1ad8f5 66 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
bogdanm 0:9b334a45a8ff 67 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
mbed_official 78:fcc37a1ad8f5 68 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
mbed_official 78:fcc37a1ad8f5 69 RCC_OscInitStruct.LSIState = RCC_LSI_ON;
mbed_official 78:fcc37a1ad8f5 70 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
mbed_official 78:fcc37a1ad8f5 71 error("RTC error: LSI clock initialization failed.");
bogdanm 0:9b334a45a8ff 72 }
mbed_official 78:fcc37a1ad8f5 73 // Connect LSI to RTC
mbed_official 78:fcc37a1ad8f5 74 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSI);
mbed_official 78:fcc37a1ad8f5 75 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
mbed_official 78:fcc37a1ad8f5 76 // [TODO] This value is LSI typical value. To be measured precisely using a timer input capture
mbed_official 78:fcc37a1ad8f5 77 rtc_freq = LSI_VALUE;
mbed_official 78:fcc37a1ad8f5 78 }
bogdanm 0:9b334a45a8ff 79
mbed_official 78:fcc37a1ad8f5 80 // Check if RTC is already initialized
mbed_official 78:fcc37a1ad8f5 81 if ((RTC->ISR & RTC_ISR_INITS) == RTC_ISR_INITS) return;
bogdanm 0:9b334a45a8ff 82
mbed_official 78:fcc37a1ad8f5 83 // Enable RTC
mbed_official 78:fcc37a1ad8f5 84 __HAL_RCC_RTC_ENABLE();
mbed_official 4:4a8e88c1ef9e 85
mbed_official 78:fcc37a1ad8f5 86 RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
mbed_official 78:fcc37a1ad8f5 87 RtcHandle.Init.AsynchPrediv = 127;
mbed_official 78:fcc37a1ad8f5 88 RtcHandle.Init.SynchPrediv = (rtc_freq / 128) - 1;
mbed_official 78:fcc37a1ad8f5 89 RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
mbed_official 78:fcc37a1ad8f5 90 RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
mbed_official 78:fcc37a1ad8f5 91 RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
mbed_official 74:9322579e4309 92
mbed_official 78:fcc37a1ad8f5 93 if (HAL_RTC_Init(&RtcHandle) != HAL_OK) {
mbed_official 78:fcc37a1ad8f5 94 error("RTC error: RTC initialization failed.");
bogdanm 0:9b334a45a8ff 95 }
bogdanm 0:9b334a45a8ff 96 }
bogdanm 0:9b334a45a8ff 97
bogdanm 0:9b334a45a8ff 98 void rtc_free(void)
bogdanm 0:9b334a45a8ff 99 {
bogdanm 0:9b334a45a8ff 100 // Enable Power clock
bogdanm 0:9b334a45a8ff 101 __PWR_CLK_ENABLE();
bogdanm 0:9b334a45a8ff 102
bogdanm 0:9b334a45a8ff 103 // Enable access to Backup domain
bogdanm 0:9b334a45a8ff 104 HAL_PWR_EnableBkUpAccess();
bogdanm 0:9b334a45a8ff 105
bogdanm 0:9b334a45a8ff 106 // Reset Backup domain
bogdanm 0:9b334a45a8ff 107 __HAL_RCC_BACKUPRESET_FORCE();
bogdanm 0:9b334a45a8ff 108 __HAL_RCC_BACKUPRESET_RELEASE();
bogdanm 0:9b334a45a8ff 109
bogdanm 0:9b334a45a8ff 110 // Disable access to Backup domain
bogdanm 0:9b334a45a8ff 111 HAL_PWR_DisableBkUpAccess();
bogdanm 0:9b334a45a8ff 112
bogdanm 0:9b334a45a8ff 113 // Disable LSI and LSE clocks
bogdanm 0:9b334a45a8ff 114 RCC_OscInitTypeDef RCC_OscInitStruct;
bogdanm 0:9b334a45a8ff 115 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
bogdanm 0:9b334a45a8ff 116 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
bogdanm 0:9b334a45a8ff 117 RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
bogdanm 0:9b334a45a8ff 118 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
bogdanm 0:9b334a45a8ff 119 HAL_RCC_OscConfig(&RCC_OscInitStruct);
bogdanm 0:9b334a45a8ff 120 }
bogdanm 0:9b334a45a8ff 121
bogdanm 0:9b334a45a8ff 122 int rtc_isenabled(void)
bogdanm 0:9b334a45a8ff 123 {
mbed_official 4:4a8e88c1ef9e 124 if(RTC->ISR != 7) {
mbed_official 4:4a8e88c1ef9e 125 return 1;
mbed_official 4:4a8e88c1ef9e 126 } else {
mbed_official 4:4a8e88c1ef9e 127 return 0;
mbed_official 4:4a8e88c1ef9e 128 }
bogdanm 0:9b334a45a8ff 129 }
bogdanm 0:9b334a45a8ff 130
bogdanm 0:9b334a45a8ff 131 /*
bogdanm 0:9b334a45a8ff 132 RTC Registers
bogdanm 0:9b334a45a8ff 133 RTC_WeekDay 1=monday, 2=tuesday, ..., 7=sunday
bogdanm 0:9b334a45a8ff 134 RTC_Month 1=january, 2=february, ..., 12=december
bogdanm 0:9b334a45a8ff 135 RTC_Date day of the month 1-31
bogdanm 0:9b334a45a8ff 136 RTC_Year year 0-99
bogdanm 0:9b334a45a8ff 137 struct tm
bogdanm 0:9b334a45a8ff 138 tm_sec seconds after the minute 0-61
bogdanm 0:9b334a45a8ff 139 tm_min minutes after the hour 0-59
bogdanm 0:9b334a45a8ff 140 tm_hour hours since midnight 0-23
bogdanm 0:9b334a45a8ff 141 tm_mday day of the month 1-31
bogdanm 0:9b334a45a8ff 142 tm_mon months since January 0-11
bogdanm 0:9b334a45a8ff 143 tm_year years since 1900
bogdanm 0:9b334a45a8ff 144 tm_wday days since Sunday 0-6
bogdanm 0:9b334a45a8ff 145 tm_yday days since January 1 0-365
bogdanm 0:9b334a45a8ff 146 tm_isdst Daylight Saving Time flag
bogdanm 0:9b334a45a8ff 147 */
bogdanm 0:9b334a45a8ff 148 time_t rtc_read(void)
bogdanm 0:9b334a45a8ff 149 {
bogdanm 0:9b334a45a8ff 150 RTC_DateTypeDef dateStruct;
bogdanm 0:9b334a45a8ff 151 RTC_TimeTypeDef timeStruct;
bogdanm 0:9b334a45a8ff 152 struct tm timeinfo;
bogdanm 0:9b334a45a8ff 153
bogdanm 0:9b334a45a8ff 154 RtcHandle.Instance = RTC;
bogdanm 0:9b334a45a8ff 155
bogdanm 0:9b334a45a8ff 156 // Read actual date and time
bogdanm 0:9b334a45a8ff 157 // Warning: the time must be read first!
bogdanm 0:9b334a45a8ff 158 HAL_RTC_GetTime(&RtcHandle, &timeStruct, FORMAT_BIN);
bogdanm 0:9b334a45a8ff 159 HAL_RTC_GetDate(&RtcHandle, &dateStruct, FORMAT_BIN);
bogdanm 0:9b334a45a8ff 160
bogdanm 0:9b334a45a8ff 161 // Setup a tm structure based on the RTC
bogdanm 0:9b334a45a8ff 162 timeinfo.tm_wday = dateStruct.WeekDay;
bogdanm 0:9b334a45a8ff 163 timeinfo.tm_mon = dateStruct.Month - 1;
bogdanm 0:9b334a45a8ff 164 timeinfo.tm_mday = dateStruct.Date;
bogdanm 0:9b334a45a8ff 165 timeinfo.tm_year = dateStruct.Year + 100;
bogdanm 0:9b334a45a8ff 166 timeinfo.tm_hour = timeStruct.Hours;
bogdanm 0:9b334a45a8ff 167 timeinfo.tm_min = timeStruct.Minutes;
bogdanm 0:9b334a45a8ff 168 timeinfo.tm_sec = timeStruct.Seconds;
bogdanm 0:9b334a45a8ff 169
bogdanm 0:9b334a45a8ff 170 // Convert to timestamp
bogdanm 0:9b334a45a8ff 171 time_t t = mktime(&timeinfo);
bogdanm 0:9b334a45a8ff 172
bogdanm 0:9b334a45a8ff 173 return t;
bogdanm 0:9b334a45a8ff 174 }
bogdanm 0:9b334a45a8ff 175
bogdanm 0:9b334a45a8ff 176 void rtc_write(time_t t)
bogdanm 0:9b334a45a8ff 177 {
bogdanm 0:9b334a45a8ff 178 RTC_DateTypeDef dateStruct;
bogdanm 0:9b334a45a8ff 179 RTC_TimeTypeDef timeStruct;
bogdanm 0:9b334a45a8ff 180
bogdanm 0:9b334a45a8ff 181 RtcHandle.Instance = RTC;
bogdanm 0:9b334a45a8ff 182
mbed_official 4:4a8e88c1ef9e 183 // Enable write access to Backup domain
mbed_official 4:4a8e88c1ef9e 184 HAL_PWR_EnableBkUpAccess();
mbed_official 4:4a8e88c1ef9e 185
bogdanm 0:9b334a45a8ff 186 // Convert the time into a tm
bogdanm 0:9b334a45a8ff 187 struct tm *timeinfo = localtime(&t);
bogdanm 0:9b334a45a8ff 188
bogdanm 0:9b334a45a8ff 189 // Fill RTC structures
bogdanm 0:9b334a45a8ff 190 dateStruct.WeekDay = timeinfo->tm_wday;
bogdanm 0:9b334a45a8ff 191 dateStruct.Month = timeinfo->tm_mon + 1;
bogdanm 0:9b334a45a8ff 192 dateStruct.Date = timeinfo->tm_mday;
bogdanm 0:9b334a45a8ff 193 dateStruct.Year = timeinfo->tm_year - 100;
bogdanm 0:9b334a45a8ff 194 timeStruct.Hours = timeinfo->tm_hour;
bogdanm 0:9b334a45a8ff 195 timeStruct.Minutes = timeinfo->tm_min;
bogdanm 0:9b334a45a8ff 196 timeStruct.Seconds = timeinfo->tm_sec;
bogdanm 0:9b334a45a8ff 197 timeStruct.TimeFormat = RTC_HOURFORMAT12_PM;
bogdanm 0:9b334a45a8ff 198 timeStruct.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
bogdanm 0:9b334a45a8ff 199 timeStruct.StoreOperation = RTC_STOREOPERATION_RESET;
bogdanm 0:9b334a45a8ff 200
bogdanm 0:9b334a45a8ff 201 // Change the RTC current date/time
bogdanm 0:9b334a45a8ff 202 HAL_RTC_SetDate(&RtcHandle, &dateStruct, FORMAT_BIN);
bogdanm 0:9b334a45a8ff 203 HAL_RTC_SetTime(&RtcHandle, &timeStruct, FORMAT_BIN);
bogdanm 0:9b334a45a8ff 204 }
bogdanm 0:9b334a45a8ff 205
bogdanm 0:9b334a45a8ff 206 #endif