mirror of
https://github.com/esphome/esphome.git
synced 2026-02-08 00:31:58 +00:00
99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
#include "real_time_clock.h"
|
|
#include "esphome/core/log.h"
|
|
#ifdef USE_HOST
|
|
#include <sys/time.h>
|
|
#elif defined(USE_ZEPHYR)
|
|
#include <zephyr/posix/time.h>
|
|
#else
|
|
#include "lwip/opt.h"
|
|
#endif
|
|
#ifdef USE_ESP8266
|
|
#include "sys/time.h"
|
|
#endif
|
|
#if defined(USE_RP2040) || defined(USE_ZEPHYR)
|
|
#include <sys/time.h>
|
|
#endif
|
|
#include <cerrno>
|
|
|
|
#include <cinttypes>
|
|
|
|
namespace esphome::time {
|
|
|
|
static const char *const TAG = "time";
|
|
|
|
RealTimeClock::RealTimeClock() = default;
|
|
|
|
void RealTimeClock::dump_config() {
|
|
#ifdef USE_TIME_TIMEZONE
|
|
ESP_LOGCONFIG(TAG, "Timezone: '%s'", this->timezone_.c_str());
|
|
#endif
|
|
auto time = this->now();
|
|
ESP_LOGCONFIG(TAG, "Current time: %04d-%02d-%02d %02d:%02d:%02d", time.year, time.month, time.day_of_month, time.hour,
|
|
time.minute, time.second);
|
|
}
|
|
|
|
void RealTimeClock::synchronize_epoch_(uint32_t epoch) {
|
|
ESP_LOGVV(TAG, "Got epoch %" PRIu32, epoch);
|
|
// Skip if time is already synchronized to avoid unnecessary writes, log spam,
|
|
// and prevent clock jumping backwards due to network latency
|
|
constexpr time_t min_valid_epoch = 1546300800; // January 1, 2019
|
|
time_t current_time = this->timestamp_now();
|
|
// Check if time is valid (year >= 2019) before comparing
|
|
if (current_time >= min_valid_epoch) {
|
|
// Unsigned subtraction handles wraparound correctly, then cast to signed
|
|
int32_t diff = static_cast<int32_t>(epoch - static_cast<uint32_t>(current_time));
|
|
if (diff >= -1 && diff <= 1) {
|
|
// Time is already synchronized, but still call callbacks so components
|
|
// waiting for time sync (e.g., uptime timestamp sensor) can initialize
|
|
this->time_sync_callback_.call();
|
|
return;
|
|
}
|
|
}
|
|
// Update UTC epoch time.
|
|
#ifdef USE_ZEPHYR
|
|
struct timespec ts;
|
|
ts.tv_nsec = 0;
|
|
ts.tv_sec = static_cast<time_t>(epoch);
|
|
|
|
int ret = clock_settime(CLOCK_REALTIME, &ts);
|
|
|
|
if (ret != 0) {
|
|
ESP_LOGW(TAG, "clock_settime() failed with code %d", ret);
|
|
}
|
|
#else
|
|
struct timeval timev {
|
|
.tv_sec = static_cast<time_t>(epoch), .tv_usec = 0,
|
|
};
|
|
struct timezone tz = {0, 0};
|
|
int ret = settimeofday(&timev, &tz);
|
|
if (ret == EINVAL) {
|
|
// Some ESP8266 frameworks abort when timezone parameter is not NULL
|
|
// while ESP32 expects it not to be NULL
|
|
ret = settimeofday(&timev, nullptr);
|
|
}
|
|
|
|
#ifdef USE_TIME_TIMEZONE
|
|
// Move timezone back to local timezone.
|
|
this->apply_timezone_();
|
|
#endif
|
|
|
|
if (ret != 0) {
|
|
ESP_LOGW(TAG, "setimeofday() failed with code %d", ret);
|
|
}
|
|
#endif
|
|
auto time = this->now();
|
|
ESP_LOGD(TAG, "Synchronized time: %04d-%02d-%02d %02d:%02d:%02d", time.year, time.month, time.day_of_month, time.hour,
|
|
time.minute, time.second);
|
|
|
|
this->time_sync_callback_.call();
|
|
}
|
|
|
|
#ifdef USE_TIME_TIMEZONE
|
|
void RealTimeClock::apply_timezone_() {
|
|
setenv("TZ", this->timezone_.c_str(), 1);
|
|
tzset();
|
|
}
|
|
#endif
|
|
|
|
} // namespace esphome::time
|