diff --git a/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/rtc_api.c b/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/rtc_api.c deleted file mode 100644 index 16b88ccb45..0000000000 --- a/libraries/mbed/targets/hal/TARGET_NORDIC/TARGET_MCU_NRF51822/rtc_api.c +++ /dev/null @@ -1,175 +0,0 @@ -/* mbed Microcontroller Library - ******************************************************************************* - * Copyright (c) 2014, STMicroelectronics - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * 3. Neither the name of STMicroelectronics nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER - * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - ******************************************************************************* - */ -#include "rtc_api.h" - -#if DEVICE_RTC - -#include "wait_api.h" - -#define LSE_STARTUP_TIMEOUT ((uint16_t)500) // delay in ms - -static int rtc_inited = 0; - -void rtc_init(void) { - uint32_t StartUpCounter = 0; - uint32_t LSEStatus = 0; - uint32_t rtc_freq = 0; - - RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); // Enable PWR clock - - PWR_BackupAccessCmd(ENABLE); // Enable access to Backup domain - - // Reset back up registers - RCC_BackupResetCmd(ENABLE); - RCC_BackupResetCmd(DISABLE); - - // Enable LSE clock - RCC_LSEConfig(RCC_LSE_ON); - - // Wait till LSE is ready - do { - LSEStatus = RCC_GetFlagStatus(RCC_FLAG_LSERDY); - wait_ms(1); - StartUpCounter++; - } while ((LSEStatus == 0) && (StartUpCounter <= LSE_STARTUP_TIMEOUT)); - - if (StartUpCounter > LSE_STARTUP_TIMEOUT) { - // The LSE has not started, use LSI instead. - // The RTC Clock may vary due to LSI frequency dispersion. - RCC_LSEConfig(RCC_LSE_OFF); - RCC_LSICmd(ENABLE); // Enable LSI - while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET) {} // Wait until ready - RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI); // Select the RTC Clock Source - rtc_freq = 40000; // [TODO] To be measured precisely using a timer input capture - } else { - // The LSE has correctly started - RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE); // Select the RTC Clock Source - rtc_freq = LSE_VALUE; - } - - RCC_RTCCLKCmd(ENABLE); // Enable RTC Clock - - RTC_WaitForSynchro(); // Wait for RTC registers synchronization - - RTC_InitTypeDef RTC_InitStructure; - RTC_InitStructure.RTC_AsynchPrediv = 127; - RTC_InitStructure.RTC_SynchPrediv = (rtc_freq / 128) - 1; - RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24; - RTC_Init(&RTC_InitStructure); - - PWR_BackupAccessCmd(DISABLE); // Disable access to Backup domain - - rtc_inited = 1; -} - -void rtc_free(void) { - // Reset RTC - PWR_BackupAccessCmd(ENABLE); // Enable access to Backup Domain - RTC_DeInit(); - RCC_BackupResetCmd(ENABLE); - RCC_BackupResetCmd(DISABLE); - // Disable RTC, LSE and LSI clocks - RCC_RTCCLKCmd(DISABLE); - RCC_LSEConfig(RCC_LSE_OFF); - RCC_LSICmd(DISABLE); - - rtc_inited = 0; -} - -int rtc_isenabled(void) { - return rtc_inited; -} - -/* - RTC Registers - RTC_WeekDay 1=monday, 2=tuesday, ..., 7=sunday - RTC_Month 1=january, 2=february, ..., 12=december - RTC_Date day of the month 1-31 - RTC_Year year 0-99 - struct tm - tm_sec seconds after the minute 0-61 - tm_min minutes after the hour 0-59 - tm_hour hours since midnight 0-23 - tm_mday day of the month 1-31 - tm_mon months since January 0-11 - tm_year years since 1900 - tm_wday days since Sunday 0-6 - tm_yday days since January 1 0-365 - tm_isdst Daylight Saving Time flag -*/ -time_t rtc_read(void) { - RTC_DateTypeDef dateStruct; - RTC_TimeTypeDef timeStruct; - struct tm timeinfo; - - // Read actual date and time - RTC_GetTime(RTC_Format_BIN, &timeStruct); - RTC_GetDate(RTC_Format_BIN, &dateStruct); - - // Setup a tm structure based on the RTC - timeinfo.tm_wday = dateStruct.RTC_WeekDay; - timeinfo.tm_mon = dateStruct.RTC_Month - 1; - timeinfo.tm_mday = dateStruct.RTC_Date; - timeinfo.tm_year = dateStruct.RTC_Year + 100; - timeinfo.tm_hour = timeStruct.RTC_Hours; - timeinfo.tm_min = timeStruct.RTC_Minutes; - timeinfo.tm_sec = timeStruct.RTC_Seconds; - - // Convert to timestamp - time_t t = mktime(&timeinfo); - - return t; -} - -void rtc_write(time_t t) { - RTC_DateTypeDef dateStruct; - RTC_TimeTypeDef timeStruct; - - // Convert the time into a tm - struct tm *timeinfo = localtime(&t); - - // Fill RTC structures - dateStruct.RTC_WeekDay = timeinfo->tm_wday; - dateStruct.RTC_Month = timeinfo->tm_mon + 1; - dateStruct.RTC_Date = timeinfo->tm_mday; - dateStruct.RTC_Year = timeinfo->tm_year - 100; - timeStruct.RTC_Hours = timeinfo->tm_hour; - timeStruct.RTC_Minutes = timeinfo->tm_min; - timeStruct.RTC_Seconds = timeinfo->tm_sec; - timeStruct.RTC_H12 = RTC_HourFormat_24; - - // Change the RTC current date/time - PWR_BackupAccessCmd(ENABLE); // Enable access to RTC - RTC_SetDate(RTC_Format_BIN, &dateStruct); - RTC_SetTime(RTC_Format_BIN, &timeStruct); - PWR_BackupAccessCmd(DISABLE); // Disable access to RTC -} - -#endif