Sigve Sebastian Farstad / mbed-src

mbed w/ spi bug fig

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Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_DISCO_F407VG/rtc_api.c@242:7074e42da0b2, 2014-06-27 (annotated)

Committer:
mbed_official
Date:
Fri Jun 27 07:30:09 2014 +0100
Revision:
242:7074e42da0b2
Parent:
133:d4dda5c437f0 
Synchronized with git revision 124ef5e3add9e74a3221347a3fbeea7c8b3cf353



Full URL: https://github.com/mbedmicro/mbed/commit/124ef5e3add9e74a3221347a3fbeea7c8b3cf353/



[DISCO_F407VG] HAL update.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 133:d4dda5c437f0 1 /* mbed Microcontroller Library
mbed_official 133:d4dda5c437f0 2 *******************************************************************************
mbed_official 133:d4dda5c437f0 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 133:d4dda5c437f0 4 * All rights reserved.
mbed_official 133:d4dda5c437f0 5 *
mbed_official 133:d4dda5c437f0 6 * Redistribution and use in source and binary forms, with or without
mbed_official 133:d4dda5c437f0 7 * modification, are permitted provided that the following conditions are met:
mbed_official 133:d4dda5c437f0 8 *
mbed_official 133:d4dda5c437f0 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 133:d4dda5c437f0 10 * this list of conditions and the following disclaimer.
mbed_official 133:d4dda5c437f0 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 133:d4dda5c437f0 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 133:d4dda5c437f0 13 * and/or other materials provided with the distribution.
mbed_official 133:d4dda5c437f0 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 133:d4dda5c437f0 15 * may be used to endorse or promote products derived from this software
mbed_official 133:d4dda5c437f0 16 * without specific prior written permission.
mbed_official 133:d4dda5c437f0 17 *
mbed_official 133:d4dda5c437f0 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 133:d4dda5c437f0 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 133:d4dda5c437f0 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 133:d4dda5c437f0 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 133:d4dda5c437f0 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 133:d4dda5c437f0 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 133:d4dda5c437f0 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 133:d4dda5c437f0 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 133:d4dda5c437f0 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 133:d4dda5c437f0 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 133:d4dda5c437f0 28 *******************************************************************************
mbed_official 133:d4dda5c437f0 29 */
mbed_official 133:d4dda5c437f0 30 #include "rtc_api.h"
mbed_official 242:7074e42da0b2 31
mbed_official 242:7074e42da0b2 32 #if DEVICE_RTC
mbed_official 133:d4dda5c437f0 33 #include "error.h"
mbed_official 133:d4dda5c437f0 34
mbed_official 133:d4dda5c437f0 35 static int rtc_inited = 0;
mbed_official 133:d4dda5c437f0 36
mbed_official 133:d4dda5c437f0 37 static RTC_HandleTypeDef RtcHandle;
mbed_official 133:d4dda5c437f0 38
mbed_official 133:d4dda5c437f0 39 void rtc_init(void) {
mbed_official 242:7074e42da0b2 40 RCC_OscInitTypeDef RCC_OscInitStruct;
mbed_official 242:7074e42da0b2 41 uint32_t rtc_freq = 0;
mbed_official 242:7074e42da0b2 42
mbed_official 133:d4dda5c437f0 43 if (rtc_inited) return;
mbed_official 133:d4dda5c437f0 44 rtc_inited = 1;
mbed_official 133:d4dda5c437f0 45
mbed_official 133:d4dda5c437f0 46 RtcHandle.Instance = RTC;
mbed_official 133:d4dda5c437f0 47
mbed_official 133:d4dda5c437f0 48 // Enable Power clock
mbed_official 133:d4dda5c437f0 49 __PWR_CLK_ENABLE();
mbed_official 133:d4dda5c437f0 50
mbed_official 242:7074e42da0b2 51 // Enable access to Backup domain
mbed_official 133:d4dda5c437f0 52 HAL_PWR_EnableBkUpAccess();
mbed_official 133:d4dda5c437f0 53
mbed_official 133:d4dda5c437f0 54 // Reset Backup domain
mbed_official 133:d4dda5c437f0 55 __HAL_RCC_BACKUPRESET_FORCE();
mbed_official 133:d4dda5c437f0 56 __HAL_RCC_BACKUPRESET_RELEASE();
mbed_official 133:d4dda5c437f0 57
mbed_official 242:7074e42da0b2 58 // Enable LSE Oscillator
mbed_official 242:7074e42da0b2 59 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
mbed_official 242:7074e42da0b2 60 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; /* Mandatory, otherwise the PLL is reconfigured! */
mbed_official 242:7074e42da0b2 61 RCC_OscInitStruct.LSEState = RCC_LSE_ON; /* External 32.768 kHz clock on OSC_IN/OSC_OUT */
mbed_official 242:7074e42da0b2 62 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) == HAL_OK) {
mbed_official 242:7074e42da0b2 63 // Connect LSE to RTC
mbed_official 242:7074e42da0b2 64 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSE);
mbed_official 242:7074e42da0b2 65 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSE);
mbed_official 242:7074e42da0b2 66 rtc_freq = LSE_VALUE;
mbed_official 242:7074e42da0b2 67 } else {
mbed_official 133:d4dda5c437f0 68 // Enable LSI clock
mbed_official 133:d4dda5c437f0 69 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
mbed_official 242:7074e42da0b2 70 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
mbed_official 133:d4dda5c437f0 71 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
mbed_official 242:7074e42da0b2 72 RCC_OscInitStruct.LSIState = RCC_LSI_ON;
mbed_official 133:d4dda5c437f0 73 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
mbed_official 133:d4dda5c437f0 74 error("RTC error: LSI clock initialization failed.");
mbed_official 133:d4dda5c437f0 75 }
mbed_official 133:d4dda5c437f0 76 // Connect LSI to RTC
mbed_official 133:d4dda5c437f0 77 __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSI);
mbed_official 133:d4dda5c437f0 78 __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
mbed_official 242:7074e42da0b2 79 // [TODO] This value is LSI typical value. To be measured precisely using a timer input capture
mbed_official 242:7074e42da0b2 80 rtc_freq = 32000;
mbed_official 242:7074e42da0b2 81 }
mbed_official 133:d4dda5c437f0 82
mbed_official 242:7074e42da0b2 83 // Enable RTC
mbed_official 133:d4dda5c437f0 84 __HAL_RCC_RTC_ENABLE();
mbed_official 133:d4dda5c437f0 85
mbed_official 133:d4dda5c437f0 86 RtcHandle.Init.HourFormat = RTC_HOURFORMAT_24;
mbed_official 133:d4dda5c437f0 87 RtcHandle.Init.AsynchPrediv = 127;
mbed_official 242:7074e42da0b2 88 RtcHandle.Init.SynchPrediv = (rtc_freq / 128) - 1;
mbed_official 133:d4dda5c437f0 89 RtcHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
mbed_official 133:d4dda5c437f0 90 RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
mbed_official 133:d4dda5c437f0 91 RtcHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
mbed_official 133:d4dda5c437f0 92 if (HAL_RTC_Init(&RtcHandle) != HAL_OK) {
mbed_official 133:d4dda5c437f0 93 error("RTC error: RTC initialization failed.");
mbed_official 133:d4dda5c437f0 94 }
mbed_official 133:d4dda5c437f0 95 }
mbed_official 133:d4dda5c437f0 96
mbed_official 133:d4dda5c437f0 97 void rtc_free(void) {
mbed_official 133:d4dda5c437f0 98 // Enable Power clock
mbed_official 133:d4dda5c437f0 99 __PWR_CLK_ENABLE();
mbed_official 133:d4dda5c437f0 100
mbed_official 242:7074e42da0b2 101 // Enable access to Backup domain
mbed_official 133:d4dda5c437f0 102 HAL_PWR_EnableBkUpAccess();
mbed_official 133:d4dda5c437f0 103
mbed_official 133:d4dda5c437f0 104 // Reset Backup domain
mbed_official 133:d4dda5c437f0 105 __HAL_RCC_BACKUPRESET_FORCE();
mbed_official 133:d4dda5c437f0 106 __HAL_RCC_BACKUPRESET_RELEASE();
mbed_official 133:d4dda5c437f0 107
mbed_official 242:7074e42da0b2 108 // Disable access to Backup domain
mbed_official 242:7074e42da0b2 109 HAL_PWR_DisableBkUpAccess();
mbed_official 242:7074e42da0b2 110
mbed_official 242:7074e42da0b2 111 // Disable LSI and LSE clocks
mbed_official 133:d4dda5c437f0 112 RCC_OscInitTypeDef RCC_OscInitStruct;
mbed_official 242:7074e42da0b2 113 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
mbed_official 133:d4dda5c437f0 114 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
mbed_official 133:d4dda5c437f0 115 RCC_OscInitStruct.LSIState = RCC_LSI_OFF;
mbed_official 242:7074e42da0b2 116 RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
mbed_official 133:d4dda5c437f0 117 HAL_RCC_OscConfig(&RCC_OscInitStruct);
mbed_official 133:d4dda5c437f0 118
mbed_official 133:d4dda5c437f0 119 rtc_inited = 0;
mbed_official 133:d4dda5c437f0 120 }
mbed_official 133:d4dda5c437f0 121
mbed_official 133:d4dda5c437f0 122 int rtc_isenabled(void) {
mbed_official 133:d4dda5c437f0 123 return rtc_inited;
mbed_official 133:d4dda5c437f0 124 }
mbed_official 133:d4dda5c437f0 125
mbed_official 133:d4dda5c437f0 126 /*
mbed_official 133:d4dda5c437f0 127 RTC Registers
mbed_official 133:d4dda5c437f0 128 RTC_WeekDay 1=monday, 2=tuesday, ..., 7=sunday
mbed_official 133:d4dda5c437f0 129 RTC_Month 1=january, 2=february, ..., 12=december
mbed_official 133:d4dda5c437f0 130 RTC_Date day of the month 1-31
mbed_official 133:d4dda5c437f0 131 RTC_Year year 0-99
mbed_official 133:d4dda5c437f0 132 struct tm
mbed_official 133:d4dda5c437f0 133 tm_sec seconds after the minute 0-61
mbed_official 133:d4dda5c437f0 134 tm_min minutes after the hour 0-59
mbed_official 133:d4dda5c437f0 135 tm_hour hours since midnight 0-23
mbed_official 133:d4dda5c437f0 136 tm_mday day of the month 1-31
mbed_official 133:d4dda5c437f0 137 tm_mon months since January 0-11
mbed_official 133:d4dda5c437f0 138 tm_year years since 1900
mbed_official 133:d4dda5c437f0 139 tm_wday days since Sunday 0-6
mbed_official 133:d4dda5c437f0 140 tm_yday days since January 1 0-365
mbed_official 133:d4dda5c437f0 141 tm_isdst Daylight Saving Time flag
mbed_official 133:d4dda5c437f0 142 */
mbed_official 133:d4dda5c437f0 143 time_t rtc_read(void) {
mbed_official 133:d4dda5c437f0 144 RTC_DateTypeDef dateStruct;
mbed_official 133:d4dda5c437f0 145 RTC_TimeTypeDef timeStruct;
mbed_official 133:d4dda5c437f0 146 struct tm timeinfo;
mbed_official 133:d4dda5c437f0 147
mbed_official 133:d4dda5c437f0 148 RtcHandle.Instance = RTC;
mbed_official 133:d4dda5c437f0 149
mbed_official 133:d4dda5c437f0 150 // Read actual date and time
mbed_official 133:d4dda5c437f0 151 // Warning: the time must be read first!
mbed_official 133:d4dda5c437f0 152 HAL_RTC_GetTime(&RtcHandle, &timeStruct, FORMAT_BIN);
mbed_official 133:d4dda5c437f0 153 HAL_RTC_GetDate(&RtcHandle, &dateStruct, FORMAT_BIN);
mbed_official 133:d4dda5c437f0 154
mbed_official 133:d4dda5c437f0 155 // Setup a tm structure based on the RTC
mbed_official 133:d4dda5c437f0 156 timeinfo.tm_wday = dateStruct.WeekDay;
mbed_official 133:d4dda5c437f0 157 timeinfo.tm_mon = dateStruct.Month - 1;
mbed_official 133:d4dda5c437f0 158 timeinfo.tm_mday = dateStruct.Date;
mbed_official 133:d4dda5c437f0 159 timeinfo.tm_year = dateStruct.Year + 100;
mbed_official 133:d4dda5c437f0 160 timeinfo.tm_hour = timeStruct.Hours;
mbed_official 133:d4dda5c437f0 161 timeinfo.tm_min = timeStruct.Minutes;
mbed_official 133:d4dda5c437f0 162 timeinfo.tm_sec = timeStruct.Seconds;
mbed_official 133:d4dda5c437f0 163
mbed_official 133:d4dda5c437f0 164 // Convert to timestamp
mbed_official 133:d4dda5c437f0 165 time_t t = mktime(&timeinfo);
mbed_official 133:d4dda5c437f0 166
mbed_official 133:d4dda5c437f0 167 return t;
mbed_official 133:d4dda5c437f0 168 }
mbed_official 133:d4dda5c437f0 169
mbed_official 133:d4dda5c437f0 170 void rtc_write(time_t t) {
mbed_official 133:d4dda5c437f0 171 RTC_DateTypeDef dateStruct;
mbed_official 133:d4dda5c437f0 172 RTC_TimeTypeDef timeStruct;
mbed_official 133:d4dda5c437f0 173
mbed_official 133:d4dda5c437f0 174 RtcHandle.Instance = RTC;
mbed_official 133:d4dda5c437f0 175
mbed_official 133:d4dda5c437f0 176 // Convert the time into a tm
mbed_official 133:d4dda5c437f0 177 struct tm *timeinfo = localtime(&t);
mbed_official 133:d4dda5c437f0 178
mbed_official 133:d4dda5c437f0 179 // Fill RTC structures
mbed_official 133:d4dda5c437f0 180 dateStruct.WeekDay = timeinfo->tm_wday;
mbed_official 133:d4dda5c437f0 181 dateStruct.Month = timeinfo->tm_mon + 1;
mbed_official 133:d4dda5c437f0 182 dateStruct.Date = timeinfo->tm_mday;
mbed_official 133:d4dda5c437f0 183 dateStruct.Year = timeinfo->tm_year - 100;
mbed_official 133:d4dda5c437f0 184 timeStruct.Hours = timeinfo->tm_hour;
mbed_official 133:d4dda5c437f0 185 timeStruct.Minutes = timeinfo->tm_min;
mbed_official 133:d4dda5c437f0 186 timeStruct.Seconds = timeinfo->tm_sec;
mbed_official 133:d4dda5c437f0 187 timeStruct.TimeFormat = RTC_HOURFORMAT12_PM;
mbed_official 133:d4dda5c437f0 188 timeStruct.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
mbed_official 133:d4dda5c437f0 189 timeStruct.StoreOperation = RTC_STOREOPERATION_RESET;
mbed_official 133:d4dda5c437f0 190
mbed_official 133:d4dda5c437f0 191 // Change the RTC current date/time
mbed_official 133:d4dda5c437f0 192 HAL_RTC_SetDate(&RtcHandle, &dateStruct, FORMAT_BIN);
mbed_official 133:d4dda5c437f0 193 HAL_RTC_SetTime(&RtcHandle, &timeStruct, FORMAT_BIN);
mbed_official 133:d4dda5c437f0 194 }
mbed_official 242:7074e42da0b2 195
mbed_official 242:7074e42da0b2 196 #endif