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tinySA/os/various/chrtclib.c

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/*
ChibiOS/RT - Copyright (C) 2006-2013 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(STM32F1XX) || defined(STM32F10X_MD) || defined(STM32F10X_LD) || \
defined(STM32F10X_HD) || 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 = {0,0};
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 = {0,0};
timespec.tv_sec = mktime(timp);
timespec.tv_msec = 0;
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 = {0,0};
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 = {0,0};
timespec.tv_sec = tv_sec;
timespec.tv_msec = 0;
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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