mirror of
https://github.com/esphome/esphome.git
synced 2026-02-18 23:45:40 -07:00
125 lines
4.1 KiB
C++
125 lines
4.1 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>
|
|
#include <cstdlib>
|
|
|
|
namespace esphome::time {
|
|
|
|
static const char *const TAG = "time";
|
|
|
|
RealTimeClock::RealTimeClock() = default;
|
|
|
|
void RealTimeClock::dump_config() {
|
|
#ifdef USE_TIME_TIMEZONE
|
|
const auto &tz = get_global_tz();
|
|
int std_hours = -tz.std_offset_seconds / 3600;
|
|
int std_mins = std::abs(tz.std_offset_seconds % 3600) / 60;
|
|
ESP_LOGCONFIG(TAG, "Timezone: UTC%+d:%02d", std_hours, std_mins);
|
|
if (tz.has_dst) {
|
|
int dst_hours = -tz.dst_offset_seconds / 3600;
|
|
int dst_mins = std::abs(tz.dst_offset_seconds % 3600) / 60;
|
|
// Transition times (when DST starts/ends)
|
|
int start_time_hours = tz.dst_start.time_seconds / 3600;
|
|
int start_time_mins = std::abs(tz.dst_start.time_seconds % 3600) / 60;
|
|
int end_time_hours = tz.dst_end.time_seconds / 3600;
|
|
int end_time_mins = std::abs(tz.dst_end.time_seconds % 3600) / 60;
|
|
// Always use M format - tzdata and aioesphomeapi only generate M format rules
|
|
ESP_LOGCONFIG(TAG, " DST: UTC%+d:%02d, M%d.%d.%d/%d:%02d - M%d.%d.%d/%d:%02d", dst_hours, dst_mins,
|
|
tz.dst_start.month, tz.dst_start.week, tz.dst_start.day_of_week, start_time_hours, start_time_mins,
|
|
tz.dst_end.month, tz.dst_end.week, tz.dst_end.day_of_week, end_time_hours, end_time_mins);
|
|
}
|
|
#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);
|
|
}
|
|
|
|
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_(const char *tz) {
|
|
ParsedTimezone parsed{};
|
|
|
|
// Handle null input
|
|
if (tz == nullptr) {
|
|
ESP_LOGW(TAG, "Failed to parse timezone: (null)");
|
|
set_global_tz(parsed);
|
|
return;
|
|
}
|
|
|
|
// Parse the POSIX TZ string using our custom parser
|
|
if (!parse_posix_tz(tz, parsed)) {
|
|
ESP_LOGW(TAG, "Failed to parse timezone: %s", tz);
|
|
// parsed stays as default (UTC) on failure
|
|
}
|
|
|
|
// Set global timezone for all time conversions
|
|
set_global_tz(parsed);
|
|
}
|
|
#endif
|
|
|
|
} // namespace esphome::time
|