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TEF6686_ESP32/lib/ESP32Time/ESP32Time.cpp

76 lines
2.2 KiB
C++

/*
MIT License
Copyright (c) 2021 Felix Biego
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#include "ESP32Time.h"
#include "time.h"
#include <sys/time.h>
#include "esp_attr.h"
RTC_DATA_ATTR static bool overflow;
/*!
@brief set the internal RTC time
@param epoch
epoch time in seconds
@param ms
microseconds (optional)
*/
void ESP32Time::setTime(unsigned long epoch, int ms) const {
struct timeval tv;
if (epoch > 2082758399){
overflow = true;
tv.tv_sec = epoch - 2082758399; // epoch time (seconds)
} else {
overflow = false;
tv.tv_sec = epoch; // epoch time (seconds)
}
tv.tv_usec = ms; // microseconds
settimeofday(&tv, NULL);
}
/*!
@brief get the internal RTC time as a tm struct
*/
tm ESP32Time::getTimeStruct() const {
struct tm timeinfo;
time_t now;
time(&now);
localtime_r(&now, &timeinfo);
time_t tt = mktime (&timeinfo);
if (overflow) tt += 63071999;
struct tm * tn = localtime(&tt);
if (overflow){
tn->tm_year += 64;
}
return *tn;
}
/*!
@brief get the current epoch seconds as unsigned long
*/
unsigned long ESP32Time::getEpoch() const {
struct tm timeinfo = getTimeStruct();
return mktime(&timeinfo);
}