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-rw-r--r--os/hal/src/rtc.c321
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diff --git a/os/hal/src/rtc.c b/os/hal/src/rtc.c
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--- a/os/hal/src/rtc.c
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-/*
- ChibiOS - Copyright (C) 2006..2016 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 rtc.c
- * @brief RTC Driver code.
- *
- * @addtogroup RTC
- * @{
- */
-
-#include "hal.h"
-
-#if (HAL_USE_RTC == TRUE) || defined(__DOXYGEN__)
-
-/*===========================================================================*/
-/* Driver local definitions. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-/*
- * Lookup table with months' length
- */
-static const uint8_t month_len[12] = {
- 31, 30, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
-};
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief RTC Driver initialization.
- * @note This function is implicitly invoked by @p halInit(), there is
- * no need to explicitly initialize the driver.
- *
- * @init
- */
-void rtcInit(void) {
-
- rtc_lld_init();
-}
-
-/**
- * @brief Initializes a generic RTC driver object.
- * @details The HW dependent part of the initialization has to be performed
- * outside, usually in the hardware initialization code.
- *
- * @param[out] rtcp pointer to RTC driver structure
- *
- * @init
- */
-void rtcObjectInit(RTCDriver *rtcp) {
-
-#if RTC_HAS_STORAGE == TRUE
- rtcp->vmt = &_rtc_lld_vmt;
-#else
- (void)rtcp;
-#endif
-}
-
-/**
- * @brief Set current time.
- * @note This function can be called from any context but limitations
- * could be imposed by the low level implementation. It is
- * guaranteed that the function can be called from thread
- * context.
- * @note The function can be reentrant or not reentrant depending on
- * the low level implementation.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @param[in] timespec pointer to a @p RTCDateTime structure
- *
- * @special
- */
-void rtcSetTime(RTCDriver *rtcp, const RTCDateTime *timespec) {
-
- osalDbgCheck((rtcp != NULL) && (timespec != NULL));
-
- rtc_lld_set_time(rtcp, timespec);
-}
-
-/**
- * @brief Get current time.
- * @note This function can be called from any context but limitations
- * could be imposed by the low level implementation. It is
- * guaranteed that the function can be called from thread
- * context.
- * @note The function can be reentrant or not reentrant depending on
- * the low level implementation.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @param[out] timespec pointer to a @p RTCDateTime structure
- *
- * @special
- */
-void rtcGetTime(RTCDriver *rtcp, RTCDateTime *timespec) {
-
- osalDbgCheck((rtcp != NULL) && (timespec != NULL));
-
- rtc_lld_get_time(rtcp, timespec);
-}
-
-#if (RTC_ALARMS > 0) || defined(__DOXYGEN__)
-/**
- * @brief Set alarm time.
- * @note This function can be called from any context but limitations
- * could be imposed by the low level implementation. It is
- * guaranteed that the function can be called from thread
- * context.
- * @note The function can be reentrant or not reentrant depending on
- * the low level implementation.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @param[in] alarm alarm identifier
- * @param[in] alarmspec pointer to a @p RTCAlarm structure or @p NULL
- *
- * @special
- */
-void rtcSetAlarm(RTCDriver *rtcp,
- rtcalarm_t alarm,
- const RTCAlarm *alarmspec) {
-
- osalDbgCheck((rtcp != NULL) && (alarm < (rtcalarm_t)RTC_ALARMS));
-
- rtc_lld_set_alarm(rtcp, alarm, alarmspec);
-}
-
-/**
- * @brief Get current alarm.
- * @note If an alarm has not been set then the returned alarm specification
- * is not meaningful.
- * @note This function can be called from any context but limitations
- * could be imposed by the low level implementation. It is
- * guaranteed that the function can be called from thread
- * context.
- * @note The function can be reentrant or not reentrant depending on
- * the low level implementation.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @param[in] alarm alarm identifier
- * @param[out] alarmspec pointer to a @p RTCAlarm structure
- *
- * @special
- */
-void rtcGetAlarm(RTCDriver *rtcp,
- rtcalarm_t alarm,
- RTCAlarm *alarmspec) {
-
- osalDbgCheck((rtcp != NULL) &&
- (alarm < (rtcalarm_t)RTC_ALARMS) &&
- (alarmspec != NULL));
-
- rtc_lld_get_alarm(rtcp, alarm, alarmspec);
-}
-#endif /* RTC_ALARMS > 0 */
-
-#if (RTC_SUPPORTS_CALLBACKS == TRUE) || defined(__DOXYGEN__)
-/**
- * @brief Enables or disables RTC callbacks.
- * @details This function enables or disables the callback, use a @p NULL
- * pointer in order to disable it.
- * @note This function can be called from any context but limitations
- * could be imposed by the low level implementation. It is
- * guaranteed that the function can be called from thread
- * context.
- * @note The function can be reentrant or not reentrant depending on
- * the low level implementation.
- *
- * @param[in] rtcp pointer to RTC driver structure
- * @param[in] callback callback function pointer or @p NULL
- *
- * @special
- */
-void rtcSetCallback(RTCDriver *rtcp, rtccb_t callback) {
-
- osalDbgCheck(rtcp != NULL);
-
- rtc_lld_set_callback(rtcp, callback);
-}
-#endif /* RTC_SUPPORTS_CALLBACKS == TRUE */
-
-/**
- * @brief Convert @p RTCDateTime to broken-down time structure.
- *
- * @param[in] timespec pointer to a @p RTCDateTime structure
- * @param[out] timp pointer to a broken-down time structure
- * @param[out] tv_msec pointer to milliseconds value or @p NULL
- *
- * @api
- */
-void rtcConvertDateTimeToStructTm(const RTCDateTime *timespec,
- struct tm *timp,
- uint32_t *tv_msec) {
- int sec;
-
- timp->tm_year = (int)timespec->year + (1980 - 1900);
- timp->tm_mon = (int)timespec->month - 1;
- timp->tm_mday = (int)timespec->day;
- timp->tm_isdst = (int)timespec->dstflag;
- timp->tm_wday = (int)timespec->dayofweek - 1;
-
- sec = (int)timespec->millisecond / 1000;
- timp->tm_hour = sec / 3600;
- sec %= 3600;
- timp->tm_min = sec / 60;
- timp->tm_sec = sec % 60;
-
- if (NULL != tv_msec) {
- *tv_msec = (uint32_t)timespec->millisecond % 1000U;
- }
-}
-
-/**
- * @brief Convert broken-down time structure to @p RTCDateTime.
- *
- * @param[in] timp pointer to a broken-down time structure
- * @param[in] tv_msec milliseconds value
- * @param[out] timespec pointer to a @p RTCDateTime structure
- *
- * @api
- */
-void rtcConvertStructTmToDateTime(const struct tm *timp,
- uint32_t tv_msec,
- RTCDateTime *timespec) {
-
- /*lint -save -e9034 [10.4] Verified assignments to bit fields.*/
- timespec->year = (uint32_t)timp->tm_year - (1980U - 1900U);
- timespec->month = (uint32_t)timp->tm_mon + 1U;
- timespec->day = (uint32_t)timp->tm_mday;
- timespec->dayofweek = (uint32_t)timp->tm_wday + 1U;
- if (-1 == timp->tm_isdst) {
- timespec->dstflag = 0U; /* set zero if dst is unknown */
- }
- else {
- timespec->dstflag = (uint32_t)timp->tm_isdst;
- }
- /*lint -restore*/
- /*lint -save -e9033 [10.8] Verified assignments to bit fields.*/
- timespec->millisecond = tv_msec + (uint32_t)(((timp->tm_hour * 3600) +
- (timp->tm_min * 60) +
- timp->tm_sec) * 1000);
- /*lint -restore*/
-}
-
-/**
- * @brief Get current time in format suitable for usage in FAT file system.
- * @note The information about day of week and DST is lost in DOS
- * format, the second field loses its least significant bit.
- *
- * @param[out] timespec pointer to a @p RTCDateTime structure
- * @return FAT date/time value.
- *
- * @api
- */
-uint32_t rtcConvertDateTimeToFAT(const RTCDateTime *timespec) {
- uint32_t fattime;
- uint32_t sec, min, hour, day, month;
-
- sec = timespec->millisecond / 1000U;
- hour = sec / 3600U;
- sec %= 3600U;
- min = sec / 60U;
- sec %= 60U;
- day = timespec->day;
- month = timespec->month;
-
- /* handle DST flag */
- if (1U == timespec->dstflag) {
- hour += 1U;
- if (hour == 24U) {
- hour = 0U;
- day += 1U;
- if (day > month_len[month - 1U]) {
- day = 1U;
- month += 1U;
- }
- }
- }
-
- fattime = sec >> 1U;
- fattime |= min << 5U;
- fattime |= hour << 11U;
- fattime |= day << 16U;
- fattime |= month << 21U;
- fattime |= (uint32_t)timespec->year << 25U;
-
- return fattime;
-}
-
-#endif /* HAL_USE_RTC == TRUE */
-
-/** @} */
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