Dial RTC (Real-Time Clock)

#define WIFI_SSID "********" #define WIFI_PASSWORD "********" #define NTP_TIMEZONE "UTC-8" // POSIX standard, in which "UTC+0" is UTC London, "UTC-8" is UTC+8 Beijing, "UTC+5" is UTC-5 New York #define NTP_SERVER1 "0.pool.ntp.org" #define NTP_SERVER2 "1.pool.ntp.org" #define NTP_SERVER3 "2.pool.ntp.org" #include <WiFi.h> // Different versions of the framework have different SNTP header file names and availability. #if __has_include(<esp_sntp.h>) #include <esp_sntp.h> #define SNTP_ENABLED 1 #elif __has_include(<sntp.h>) #include <sntp.h> #define SNTP_ENABLED 1 #endif #ifndef SNTP_ENABLED #define SNTP_ENABLED 0 #endif #include <M5Dial.h> static constexpr const char* const wd[7] = { "Sun", "Mon", "Tue", "Wed", "Thr", "Fri", "Sat" }; void setup() { M5Dial.begin(); M5Dial.Display.setFont(&fonts::FreeMono9pt7b); M5Dial.Display.setCursor(0, 60); M5Dial.Display.println("RTC Test"); if (!M5Dial.Rtc.isEnabled()) { M5Dial.Display.println("RTC not found"); while (true) { delay(500); } } M5Dial.Display.println("RTC found"); M5Dial.Display.print("WiFi: "); WiFi.begin(WIFI_SSID, WIFI_PASSWORD); while (WiFi.status() != WL_CONNECTED) { M5Dial.Display.print("."); delay(500); } M5Dial.Display.println("\nWiFi connected"); configTzTime(NTP_TIMEZONE, NTP_SERVER1, NTP_SERVER2, NTP_SERVER3); M5Dial.Display.print("NTP: "); #if SNTP_ENABLED while (sntp_get_sync_status() != SNTP_SYNC_STATUS_COMPLETED) { M5Dial.Display.print("."); delay(500); } #else struct tm timeInfo; while (!getLocalTime(&timeInfo, 1000)) { M5Dial.Display.print("."); delay(500); } #endif M5Dial.Display.println("\nNTP connected"); time_t t = time(nullptr) + 1; // Advance one second while (t > time(nullptr)) ; // Synchronization in seconds M5Dial.Rtc.setDateTime(gmtime(&t)); delay(1000); M5Dial.Display.clear(); M5Dial.Display.setCursor(70, 20); M5Dial.Display.println("RTC Test"); } void loop() { auto dt = M5Dial.Rtc.getDateTime(); M5Dial.Display.setCursor(40, 50); M5Dial.Display.printf("RTC UTC :"); M5Dial.Display.setCursor(40, 65); M5Dial.Display.printf("%04d/%02d/%02d(%s)", dt.date.year, dt.date.month, dt.date.date, wd[dt.date.weekDay]); M5Dial.Display.setCursor(40, 80); M5Dial.Display.printf("%02d:%02d:%02d", dt.time.hours, dt.time.minutes, dt.time.seconds); // ESP32 internal timer auto t = time(nullptr); { auto tm = gmtime(&t); // for UTC M5Dial.Display.setCursor(40, 110); M5Dial.Display.printf("ESP32 UTC :"); M5Dial.Display.setCursor(40, 125); M5Dial.Display.printf("%04d/%02d/%02d(%s)", tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, wd[tm->tm_wday]); M5Dial.Display.setCursor(40, 140); M5Dial.Display.printf("%02d:%02d:%02d", tm->tm_hour, tm->tm_min, tm->tm_sec); } { auto tm = localtime(&t); // for local timezone M5Dial.Display.setCursor(40, 170); M5Dial.Display.printf("ESP32 %s:", NTP_TIMEZONE); M5Dial.Display.setCursor(40, 185); M5Dial.Display.printf("%04d/%02d/%02d(%s)", tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, wd[tm->tm_wday]); M5Dial.Display.setCursor(40, 200); M5Dial.Display.printf("%02d:%02d:%02d", tm->tm_hour, tm->tm_min, tm->tm_sec); } delay(500); }