mbed official / mbed-src

mbed library sources

Dependents:   Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more

Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F401RE/rtc_api.c@274:6937b19af361, 2014-08-06 (annotated)

Committer:
mbed_official
Date:
Wed Aug 06 08:15:07 2014 +0100
Revision:
274:6937b19af361
Parent:
251:de9a1e4ffd79
Child:
285:31249416b6f9
Synchronized with git revision 5b145e4f6c509376173c3ea2aa35a6da879a2124



Full URL: https://github.com/mbedmicro/mbed/commit/5b145e4f6c509376173c3ea2aa35a6da879a2124/



[TARGET_LPC11UXX] PeripheralNames.h and PinMap definitions separation for LPC11UXX platforms

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 87:085cde657901 1 /* mbed Microcontroller Library
mbed_official 87:085cde657901 2 *******************************************************************************
mbed_official 87:085cde657901 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 87:085cde657901 4 * All rights reserved.
mbed_official 87:085cde657901 5 *
mbed_official 87:085cde657901 6 * Redistribution and use in source and binary forms, with or without
mbed_official 87:085cde657901 7 * modification, are permitted provided that the following conditions are met:
mbed_official 87:085cde657901 8 *
mbed_official 87:085cde657901 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 87:085cde657901 10 * this list of conditions and the following disclaimer.
mbed_official 87:085cde657901 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 87:085cde657901 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 87:085cde657901 13 * and/or other materials provided with the distribution.
mbed_official 87:085cde657901 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 87:085cde657901 15 * may be used to endorse or promote products derived from this software
mbed_official 87:085cde657901 16 * without specific prior written permission.
mbed_official 87:085cde657901 17 *
mbed_official 87:085cde657901 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 87:085cde657901 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 87:085cde657901 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 87:085cde657901 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 87:085cde657901 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 87:085cde657901 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 87:085cde657901 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 87:085cde657901 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 87:085cde657901 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 87:085cde657901 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 87:085cde657901 28 *******************************************************************************
mbed_official 87:085cde657901 29 */
mbed_official 87:085cde657901 30 #include "rtc_api.h"
mbed_official 172:2f4f8c56b261 31
mbed_official 172:2f4f8c56b261 32 #if DEVICE_RTC
mbed_official 172:2f4f8c56b261 33
mbed_official 251:de9a1e4ffd79 34 #include "error.h"
mbed_official 87:085cde657901 35
mbed_official 87:085cde657901 36 static int rtc_inited = 0;
mbed_official 87:085cde657901 37
mbed_official 87:085cde657901 38 static RTC_HandleTypeDef RtcHandle;
mbed_official 87:085cde657901 39
mbed_official 87:085cde657901 40 void rtc_init(void) {
mbed_official 172:2f4f8c56b261 41 RCC_OscInitTypeDef RCC_OscInitStruct;
mbed_official 172:2f4f8c56b261 42 uint32_t rtc_freq = 0;
mbed_official 172:2f4f8c56b261 43
mbed_official 87:085cde657901 44 if (rtc_inited) return;
mbed_official 87:085cde657901 45 rtc_inited = 1;
mbed_official 87:085cde657901 46
mbed_official 87:085cde657901 47 RtcHandle.Instance = RTC;
mbed_official 87:085cde657901 48
mbed_official 87:085cde657901 49 // Enable Power clock
mbed_official 87:085cde657901 50 __PWR_CLK_ENABLE();
mbed_official 87:085cde657901 51
mbed_official 172:2f4f8c56b261 52 // Enable access to Backup domain
mbed_official 87:085cde657901 53 HAL_PWR_EnableBkUpAccess();
mbed_official 87:085cde657901 54
mbed_official 87:085cde657901 55 // Reset Backup domain
mbed_official 172:2f4f8c56b261 56 __HAL_RCC_BACKUPRESET_FORCE();
mbed_official 87:085cde657901 57 __HAL_RCC_BACKUPRESET_RELEASE();
mbed_official 172:2f4f8c56b261 58
mbed_official 172:2f4f8c56b261 59 // Enable LSE Oscillator
mbed_official 172:2f4f8c56b261 60 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
mbed_official 172:2f4f8c56b261 61 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; /* Mandatory, otherwise the PLL is reconfigured! */
mbed_official 172:2f4f8c56b261 62 RCC_OscInitStruct.LSEState = RCC_LSE_ON; /* External 32.768 kHz clock on OSC_IN/OSC_OUT */
mbed_official 185:e752b4ee7de1 63 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) == HAL_OK) {
mbed_official 172:2f4f8c56b261 64 // Connect LSE to RTC
mbed_official 172:2f4f8c56b261 65 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSE);
mbed_official 172:2f4f8c56b261 66 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSE);
mbed_official 172:2f4f8c56b261 67 rtc_freq = LSE_VALUE;
mbed_official 172:2f4f8c56b261 68 } else {
mbed_official 172:2f4f8c56b261 69 // Enable LSI clock
mbed_official 172:2f4f8c56b261 70 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
mbed_official 172:2f4f8c56b261 71 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
mbed_official 172:2f4f8c56b261 72 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
mbed_official 172:2f4f8c56b261 73 RCC_OscInitStruct.LSIState = RCC_LSI_ON;
mbed_official 172:2f4f8c56b261 74 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
mbed_official 172:2f4f8c56b261 75 error("RTC error: LSI clock initialization failed.");
mbed_official 172:2f4f8c56b261 76 }
mbed_official 172:2f4f8c56b261 77 // Connect LSI to RTC
mbed_official 172:2f4f8c56b261 78 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSI);
mbed_official 172:2f4f8c56b261 79 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
mbed_official 172:2f4f8c56b261 80 // [TODO] This value is LSI typical value. To be measured precisely using a timer input capture
mbed_official 172:2f4f8c56b261 81 rtc_freq = 32000;
mbed_official 87:085cde657901 82 }
mbed_official 172:2f4f8c56b261 83
mbed_official 172:2f4f8c56b261 84 // Enable RTC
mbed_official 87:085cde657901 85 __HAL_RCC_RTC_ENABLE();
mbed_official 172:2f4f8c56b261 86
mbed_official 87:085cde657901 87 RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
mbed_official 87:085cde657901 88 RtcHandle.Init.AsynchPrediv = 127;
mbed_official 172:2f4f8c56b261 89 RtcHandle.Init.SynchPrediv = (rtc_freq / 128) - 1;
mbed_official 87:085cde657901 90 RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
mbed_official 87:085cde657901 91 RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
mbed_official 87:085cde657901 92 RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
mbed_official 172:2f4f8c56b261 93
mbed_official 87:085cde657901 94 if (HAL_RTC_Init(&RtcHandle) != HAL_OK) {
mbed_official 172:2f4f8c56b261 95 error("RTC error: RTC initialization failed.");
mbed_official 87:085cde657901 96 }
mbed_official 87:085cde657901 97 }
mbed_official 87:085cde657901 98
mbed_official 87:085cde657901 99 void rtc_free(void) {
mbed_official 87:085cde657901 100 // Enable Power clock
mbed_official 87:085cde657901 101 __PWR_CLK_ENABLE();
mbed_official 87:085cde657901 102
mbed_official 172:2f4f8c56b261 103 // Enable access to Backup domain
mbed_official 87:085cde657901 104 HAL_PWR_EnableBkUpAccess();
mbed_official 87:085cde657901 105
mbed_official 87:085cde657901 106 // Reset Backup domain
mbed_official 172:2f4f8c56b261 107 __HAL_RCC_BACKUPRESET_FORCE();
mbed_official 87:085cde657901 108 __HAL_RCC_BACKUPRESET_RELEASE();
mbed_official 87:085cde657901 109
mbed_official 172:2f4f8c56b261 110 // Disable access to Backup domain
mbed_official 172:2f4f8c56b261 111 HAL_PWR_DisableBkUpAccess();
mbed_official 172:2f4f8c56b261 112
mbed_official 172:2f4f8c56b261 113 // Disable LSI and LSE clocks
mbed_official 87:085cde657901 114 RCC_OscInitTypeDef RCC_OscInitStruct;
mbed_official 172:2f4f8c56b261 115 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
mbed_official 172:2f4f8c56b261 116 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
mbed_official 172:2f4f8c56b261 117 RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
mbed_official 172:2f4f8c56b261 118 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
mbed_official 87:085cde657901 119 HAL_RCC_OscConfig(&RCC_OscInitStruct);
mbed_official 172:2f4f8c56b261 120
mbed_official 87:085cde657901 121 rtc_inited = 0;
mbed_official 87:085cde657901 122 }
mbed_official 87:085cde657901 123
mbed_official 87:085cde657901 124 int rtc_isenabled(void) {
mbed_official 87:085cde657901 125 return rtc_inited;
mbed_official 87:085cde657901 126 }
mbed_official 87:085cde657901 127
mbed_official 87:085cde657901 128 /*
mbed_official 87:085cde657901 129 RTC Registers
mbed_official 87:085cde657901 130 RTC_WeekDay 1=monday, 2=tuesday, ..., 7=sunday
mbed_official 87:085cde657901 131 RTC_Month 1=january, 2=february, ..., 12=december
mbed_official 87:085cde657901 132 RTC_Date day of the month 1-31
mbed_official 87:085cde657901 133 RTC_Year year 0-99
mbed_official 87:085cde657901 134 struct tm
mbed_official 87:085cde657901 135 tm_sec seconds after the minute 0-61
mbed_official 87:085cde657901 136 tm_min minutes after the hour 0-59
mbed_official 87:085cde657901 137 tm_hour hours since midnight 0-23
mbed_official 87:085cde657901 138 tm_mday day of the month 1-31
mbed_official 87:085cde657901 139 tm_mon months since January 0-11
mbed_official 87:085cde657901 140 tm_year years since 1900
mbed_official 87:085cde657901 141 tm_wday days since Sunday 0-6
mbed_official 87:085cde657901 142 tm_yday days since January 1 0-365
mbed_official 87:085cde657901 143 tm_isdst Daylight Saving Time flag
mbed_official 87:085cde657901 144 */
mbed_official 87:085cde657901 145 time_t rtc_read(void) {
mbed_official 87:085cde657901 146 RTC_DateTypeDef dateStruct;
mbed_official 87:085cde657901 147 RTC_TimeTypeDef timeStruct;
mbed_official 87:085cde657901 148 struct tm timeinfo;
mbed_official 172:2f4f8c56b261 149
mbed_official 87:085cde657901 150 RtcHandle.Instance = RTC;
mbed_official 172:2f4f8c56b261 151
mbed_official 87:085cde657901 152 // Read actual date and time
mbed_official 87:085cde657901 153 // Warning: the time must be read first!
mbed_official 87:085cde657901 154 HAL_RTC_GetTime(&RtcHandle, &timeStruct, FORMAT_BIN);
mbed_official 87:085cde657901 155 HAL_RTC_GetDate(&RtcHandle, &dateStruct, FORMAT_BIN);
mbed_official 172:2f4f8c56b261 156
mbed_official 87:085cde657901 157 // Setup a tm structure based on the RTC
mbed_official 87:085cde657901 158 timeinfo.tm_wday = dateStruct.WeekDay;
mbed_official 87:085cde657901 159 timeinfo.tm_mon = dateStruct.Month - 1;
mbed_official 87:085cde657901 160 timeinfo.tm_mday = dateStruct.Date;
mbed_official 87:085cde657901 161 timeinfo.tm_year = dateStruct.Year + 100;
mbed_official 87:085cde657901 162 timeinfo.tm_hour = timeStruct.Hours;
mbed_official 87:085cde657901 163 timeinfo.tm_min = timeStruct.Minutes;
mbed_official 87:085cde657901 164 timeinfo.tm_sec = timeStruct.Seconds;
mbed_official 172:2f4f8c56b261 165
mbed_official 87:085cde657901 166 // Convert to timestamp
mbed_official 87:085cde657901 167 time_t t = mktime(&timeinfo);
mbed_official 172:2f4f8c56b261 168
mbed_official 172:2f4f8c56b261 169 return t;
mbed_official 87:085cde657901 170 }
mbed_official 87:085cde657901 171
mbed_official 87:085cde657901 172 void rtc_write(time_t t) {
mbed_official 87:085cde657901 173 RTC_DateTypeDef dateStruct;
mbed_official 87:085cde657901 174 RTC_TimeTypeDef timeStruct;
mbed_official 87:085cde657901 175
mbed_official 87:085cde657901 176 RtcHandle.Instance = RTC;
mbed_official 172:2f4f8c56b261 177
mbed_official 87:085cde657901 178 // Convert the time into a tm
mbed_official 87:085cde657901 179 struct tm *timeinfo = localtime(&t);
mbed_official 172:2f4f8c56b261 180
mbed_official 87:085cde657901 181 // Fill RTC structures
mbed_official 87:085cde657901 182 dateStruct.WeekDay = timeinfo->tm_wday;
mbed_official 87:085cde657901 183 dateStruct.Month = timeinfo->tm_mon + 1;
mbed_official 87:085cde657901 184 dateStruct.Date = timeinfo->tm_mday;
mbed_official 87:085cde657901 185 dateStruct.Year = timeinfo->tm_year - 100;
mbed_official 87:085cde657901 186 timeStruct.Hours = timeinfo->tm_hour;
mbed_official 87:085cde657901 187 timeStruct.Minutes = timeinfo->tm_min;
mbed_official 87:085cde657901 188 timeStruct.Seconds = timeinfo->tm_sec;
mbed_official 87:085cde657901 189 timeStruct.TimeFormat = RTC_HOURFORMAT12_PM;
mbed_official 87:085cde657901 190 timeStruct.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
mbed_official 87:085cde657901 191 timeStruct.StoreOperation = RTC_STOREOPERATION_RESET;
mbed_official 172:2f4f8c56b261 192
mbed_official 87:085cde657901 193 // Change the RTC current date/time
mbed_official 87:085cde657901 194 HAL_RTC_SetDate(&RtcHandle, &dateStruct, FORMAT_BIN);
mbed_official 87:085cde657901 195 HAL_RTC_SetTime(&RtcHandle, &timeStruct, FORMAT_BIN);
mbed_official 87:085cde657901 196 }
mbed_official 172:2f4f8c56b261 197
mbed_official 172:2f4f8c56b261 198 #endif