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-rw-r--r--os/various/chrtclib.c359
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diff --git a/os/various/chrtclib.c b/os/various/chrtclib.c
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-/*
- ChibiOS - Copyright (C) 2006-2014 Giovanni Di Sirio
-
- Licensed under the Apache License, Version 2.0 (the "License");
- you may not use this file except in compliance with the License.
- You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
- Unless required by applicable law or agreed to in writing, software
- distributed under the License is distributed on an "AS IS" BASIS,
- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- See the License for the specific language governing permissions and
- limitations under the License.
-*/
-/*
- Concepts and parts of this file have been contributed by Uladzimir Pylinsky
- aka barthess.
- */
-
-/**
- * @file chrtclib.c
- * @brief RTC time conversion utilities code.
- *
- * @addtogroup chrtclib
- * @{
- */
-
-#include <time.h>
-
-#include "ch.h"
-#include "hal.h"
-
-#include "chrtclib.h"
-
-#if (defined(STM32F4XX) || defined(STM32F2XX) || defined(STM32L1XX) || \
- defined(STM32F30X) || defined(STM32F37X) || \
- defined(STM32F1XX) || defined(STM32F10X_MD) || defined(STM32F10X_LD) || \
- defined(STM32F10X_HD) || defined(LPC122X) || defined(__DOXYGEN__))
-#if STM32_RTC_IS_CALENDAR
-/**
- * @brief Converts from STM32 BCD to canonicalized time format.
- *
- * @param[out] timp pointer to a @p tm structure as defined in time.h
- * @param[in] timespec pointer to a @p RTCTime structure
- *
- * @notapi
- */
-static void stm32_rtc_bcd2tm(struct tm *timp, RTCTime *timespec) {
- uint32_t tv_time = timespec->tv_time;
- uint32_t tv_date = timespec->tv_date;
-
-#if CH_DBG_ENABLE_CHECKS
- timp->tm_isdst = 0;
- timp->tm_wday = 0;
- timp->tm_mday = 0;
- timp->tm_yday = 0;
- timp->tm_mon = 0;
- timp->tm_year = 0;
- timp->tm_sec = 0;
- timp->tm_min = 0;
- timp->tm_hour = 0;
-#endif
-
- timp->tm_isdst = -1;
-
- timp->tm_wday = (tv_date & RTC_DR_WDU) >> RTC_DR_WDU_OFFSET;
- if (timp->tm_wday == 7)
- timp->tm_wday = 0;
-
- timp->tm_mday = (tv_date & RTC_DR_DU) >> RTC_DR_DU_OFFSET;
- timp->tm_mday += ((tv_date & RTC_DR_DT) >> RTC_DR_DT_OFFSET) * 10;
-
- timp->tm_mon = (tv_date & RTC_DR_MU) >> RTC_DR_MU_OFFSET;
- timp->tm_mon += ((tv_date & RTC_DR_MT) >> RTC_DR_MT_OFFSET) * 10;
- timp->tm_mon -= 1;
-
- timp->tm_year = (tv_date & RTC_DR_YU) >> RTC_DR_YU_OFFSET;
- timp->tm_year += ((tv_date & RTC_DR_YT) >> RTC_DR_YT_OFFSET) * 10;
- timp->tm_year += 2000 - 1900;
-
- timp->tm_sec = (tv_time & RTC_TR_SU) >> RTC_TR_SU_OFFSET;
- timp->tm_sec += ((tv_time & RTC_TR_ST) >> RTC_TR_ST_OFFSET) * 10;
-
- timp->tm_min = (tv_time & RTC_TR_MNU) >> RTC_TR_MNU_OFFSET;
- timp->tm_min += ((tv_time & RTC_TR_MNT) >> RTC_TR_MNT_OFFSET) * 10;
-
- timp->tm_hour = (tv_time & RTC_TR_HU) >> RTC_TR_HU_OFFSET;
- timp->tm_hour += ((tv_time & RTC_TR_HT) >> RTC_TR_HT_OFFSET) * 10;
- timp->tm_hour += 12 * ((tv_time & RTC_TR_PM) >> RTC_TR_PM_OFFSET);
-}
-
-/**
- * @brief Converts from canonicalized to STM32 BCD time format.
- *
- * @param[in] timp pointer to a @p tm structure as defined in time.h
- * @param[out] timespec pointer to a @p RTCTime structure
- *
- * @notapi
- */
-static void stm32_rtc_tm2bcd(struct tm *timp, RTCTime *timespec) {
- uint32_t v = 0;
-
- timespec->tv_date = 0;
- timespec->tv_time = 0;
-
- v = timp->tm_year - 100;
- timespec->tv_date |= ((v / 10) << RTC_DR_YT_OFFSET) & RTC_DR_YT;
- timespec->tv_date |= (v % 10) << RTC_DR_YU_OFFSET;
-
- if (timp->tm_wday == 0)
- v = 7;
- else
- v = timp->tm_wday;
- timespec->tv_date |= (v << RTC_DR_WDU_OFFSET) & RTC_DR_WDU;
-
- v = timp->tm_mon + 1;
- timespec->tv_date |= ((v / 10) << RTC_DR_MT_OFFSET) & RTC_DR_MT;
- timespec->tv_date |= (v % 10) << RTC_DR_MU_OFFSET;
-
- v = timp->tm_mday;
- timespec->tv_date |= ((v / 10) << RTC_DR_DT_OFFSET) & RTC_DR_DT;
- timespec->tv_date |= (v % 10) << RTC_DR_DU_OFFSET;
-
- v = timp->tm_hour;
- timespec->tv_time |= ((v / 10) << RTC_TR_HT_OFFSET) & RTC_TR_HT;
- timespec->tv_time |= (v % 10) << RTC_TR_HU_OFFSET;
-
- v = timp->tm_min;
- timespec->tv_time |= ((v / 10) << RTC_TR_MNT_OFFSET) & RTC_TR_MNT;
- timespec->tv_time |= (v % 10) << RTC_TR_MNU_OFFSET;
-
- v = timp->tm_sec;
- timespec->tv_time |= ((v / 10) << RTC_TR_ST_OFFSET) & RTC_TR_ST;
- timespec->tv_time |= (v % 10) << RTC_TR_SU_OFFSET;
-}
-
-/**
- * @brief Gets raw time from RTC and converts it to canonicalized format.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @param[out] timp pointer to a @p tm structure as defined in time.h
- *
- * @api
- */
-void rtcGetTimeTm(RTCDriver *rtcp, struct tm *timp) {
-#if STM32_RTC_HAS_SUBSECONDS
- RTCTime timespec = {0,0,FALSE,0};
-#else
- RTCTime timespec = {0,0,FALSE};
-#endif
-
- rtcGetTime(rtcp, &timespec);
- stm32_rtc_bcd2tm(timp, &timespec);
-}
-
-/**
- * @brief Sets RTC time.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @param[out] timp pointer to a @p tm structure as defined in time.h
- *
- * @api
- */
-void rtcSetTimeTm(RTCDriver *rtcp, struct tm *timp) {
-#if STM32_RTC_HAS_SUBSECONDS
- RTCTime timespec = {0,0,FALSE,0};
-#else
- RTCTime timespec = {0,0,FALSE};
-#endif
-
- stm32_rtc_tm2bcd(timp, &timespec);
- rtcSetTime(rtcp, &timespec);
-}
-
-/**
- * @brief Gets raw time from RTC and converts it to unix format.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @return Unix time value in seconds.
- *
- * @api
- */
-time_t rtcGetTimeUnixSec(RTCDriver *rtcp) {
-#if STM32_RTC_HAS_SUBSECONDS
- RTCTime timespec = {0,0,FALSE,0};
-#else
- RTCTime timespec = {0,0,FALSE};
-#endif
- struct tm timp;
-
- rtcGetTime(rtcp, &timespec);
- stm32_rtc_bcd2tm(&timp, &timespec);
-
- return mktime(&timp);
-}
-
-/**
- * @brief Sets RTC time.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @param[in] tv_sec time specification
- * @return Unix time value in seconds.
- *
- * @api
- */
-void rtcSetTimeUnixSec(RTCDriver *rtcp, time_t tv_sec) {
-#if STM32_RTC_HAS_SUBSECONDS
- RTCTime timespec = {0,0,FALSE,0};
-#else
- RTCTime timespec = {0,0,FALSE};
-#endif
- struct tm timp;
-
- localtime_r(&tv_sec, &timp);
- stm32_rtc_tm2bcd(&timp, &timespec);
- rtcSetTime(rtcp, &timespec);
-}
-
-/**
- * @brief Gets raw time from RTC and converts it to unix format.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @return Unix time value in microseconds.
- *
- * @api
- */
-uint64_t rtcGetTimeUnixUsec(RTCDriver *rtcp) {
-#if STM32_RTC_HAS_SUBSECONDS
- uint64_t result = 0;
- RTCTime timespec = {0,0,FALSE,0};
- struct tm timp;
-
- rtcGetTime(rtcp, &timespec);
- stm32_rtc_bcd2tm(&timp, &timespec);
-
- result = (uint64_t)mktime(&timp) * 1000000;
- return result + timespec.tv_msec * 1000;
-#else
- return (uint64_t)rtcGetTimeUnixSec(rtcp) * 1000000;
-#endif
-}
-
-#else /* STM32_RTC_IS_CALENDAR */
-/**
- * @brief Gets raw time from RTC and converts it to canonicalized format.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @param[out] timp pointer to a @p tm structure as defined in time.h
- *
- * @api
- */
-void rtcGetTimeTm(RTCDriver *rtcp, struct tm *timp) {
- RTCTime timespec = {0};
-
- rtcGetTime(rtcp, &timespec);
- localtime_r((time_t *)&(timespec.tv_sec), timp);
-}
-
-/**
- * @brief Sets RTC time.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @param[out] timp pointer to a @p tm structure as defined in time.h
- *
- * @api
- */
-void rtcSetTimeTm(RTCDriver *rtcp, struct tm *timp) {
- RTCTime timespec = {0};
-
- timespec.tv_sec = mktime(timp);
-#if !defined(LPC122X)
- timespec.tv_msec = 0;
-#endif
- rtcSetTime(rtcp, &timespec);
-}
-
-/**
- * @brief Gets raw time from RTC and converts it to unix format.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @return Unix time value in seconds.
- *
- * @api
- */
-time_t rtcGetTimeUnixSec(RTCDriver *rtcp) {
- RTCTime timespec = {0};
-
- rtcGetTime(rtcp, &timespec);
- return timespec.tv_sec;
-}
-
-/**
- * @brief Sets RTC time.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @param[in] tv_sec time specification
- * @return Unix time value in seconds.
- *
- * @api
- */
-void rtcSetTimeUnixSec(RTCDriver *rtcp, time_t tv_sec) {
- RTCTime timespec = {0};
-
- timespec.tv_sec = tv_sec;
-#if !defined(LPC122X)
- timespec.tv_msec = 0;
-#endif
- rtcSetTime(rtcp, &timespec);
-}
-
-/**
- * @brief Gets raw time from RTC and converts it to unix format.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @return Unix time value in microseconds.
- *
- * @api
- */
-uint64_t rtcGetTimeUnixUsec(RTCDriver *rtcp) {
-#if STM32_RTC_HAS_SUBSECONDS
- uint64_t result = 0;
- RTCTime timespec = {0,0};
-
- rtcGetTime(rtcp, &timespec);
- result = (uint64_t)timespec.tv_sec * 1000000;
- return result + timespec.tv_msec * 1000;
-#else
- return (uint64_t)rtcGetTimeUnixSec(rtcp) * 1000000;
-#endif
-}
-
-/**
- * @brief Get current time in format suitable for usage in FatFS.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @return FAT time value.
- *
- * @api
- */
-uint32_t rtcGetTimeFatFromCounter(RTCDriver *rtcp) {
- uint32_t fattime;
- struct tm timp;
-
- rtcGetTimeTm(rtcp, &timp);
-
- fattime = (timp.tm_sec) >> 1;
- fattime |= (timp.tm_min) << 5;
- fattime |= (timp.tm_hour) << 11;
- fattime |= (timp.tm_mday) << 16;
- fattime |= (timp.tm_mon + 1) << 21;
- fattime |= (timp.tm_year - 80) << 25;
-
- return fattime;
-}
-#endif /* STM32_RTC_IS_CALENDAR */
-#endif /* (defined(STM32F4XX) || defined(STM32F2XX) || defined(STM32L1XX) || defined(STM32F1XX)) */
-
-/** @} */
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