first commit

libraries/M5Unified/examples/Basic/Rtc/Rtc.ino

@@ -0,0 +1,155 @@
+#if defined ( ARDUINO )
+
+ #define WIFI_SSID     "YOUR WIFI SSID NAME"
+ #define WIFI_PASSWORD "YOUR WIFI PASSWORD"
+ #define NTP_TIMEZONE  "JST-9"
+ #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
+
+#endif
+
+#ifndef SNTP_ENABLED
+#define SNTP_ENABLED 0
+#endif
+
+#include <M5Unified.h>
+
+void setup(void)
+{
+  auto cfg = M5.config();
+
+  cfg.external_rtc  = true;  // default=false. use Unit RTC.
+
+  M5.begin(cfg);
+
+  M5.Display.setEpdMode(m5gfx::epd_fastest);
+  M5.setLogDisplayIndex(0);
+
+  if (!M5.Rtc.isEnabled())
+  {
+    M5.Log.println("RTC not found.");
+    for (;;) { M5.delay(500); }
+  }
+
+  M5.Log.println("RTC found.");
+
+// It is recommended to set UTC for the RTC and ESP32 internal clocks.
+
+
+/* /// setup RTC ( direct setting )
+  //                      YYYY  MM  DD      hh  mm  ss
+  M5.Rtc.setDateTime( { { 2021, 12, 31 }, { 12, 34, 56 } } );
+//*/
+
+
+/// setup RTC ( NTP auto setting )
+  configTzTime(NTP_TIMEZONE, NTP_SERVER1, NTP_SERVER2, NTP_SERVER3);
+#ifdef WiFi_h
+  M5.Log.print("WiFi:");
+  WiFi.begin( WIFI_SSID, WIFI_PASSWORD );
+
+  for (int i = 20; i && WiFi.status() != WL_CONNECTED; --i)
+  {
+    M5.Log.print(".");
+    M5.delay(500);
+  }
+  if (WiFi.status() == WL_CONNECTED) {
+    M5.Log.println("\r\nWiFi Connected.");
+    M5.Log.print("NTP:");
+#if SNTP_ENABLED
+    while (sntp_get_sync_status() != SNTP_SYNC_STATUS_COMPLETED)
+    {
+      M5.Log.print(".");
+      M5.delay(1000);
+    }
+#else
+    M5.delay(1600);
+    struct tm timeInfo;
+    while (!getLocalTime(&timeInfo, 1000))
+    {
+      M5.Log.print('.');
+    };
+#endif
+    M5.Log.println("\r\nNTP Connected.");
+
+    time_t t = time(nullptr)+1; // Advance one second.
+    while (t > time(nullptr));  /// Synchronization in seconds
+    M5.Rtc.setDateTime( gmtime( &t ) );
+  }
+  else
+  {
+    M5.Log.println("\r\nWiFi none...");
+  }
+#endif
+
+  M5.Display.clear();
+}
+
+void loop(void)
+{
+  static constexpr const char* const wd[7] = {"Sun","Mon","Tue","Wed","Thr","Fri","Sat"};
+
+  M5.delay(500);
+
+  auto dt = M5.Rtc.getDateTime();
+  M5.Display.setCursor(0,0);
+  M5.Log.printf("RTC   UTC  :%04d/%02d/%02d (%s)  %02d:%02d:%02d\r\n"
+               , dt.date.year
+               , dt.date.month
+               , dt.date.date
+               , wd[dt.date.weekDay]
+               , dt.time.hours
+               , dt.time.minutes
+               , dt.time.seconds
+               );
+
+ /// ESP32 internal timer
+  auto t = time(nullptr);
+  {
+    auto tm = gmtime(&t);    // for UTC.
+    M5.Display.setCursor(0,20);
+    M5.Log.printf("ESP32 UTC  :%04d/%02d/%02d (%s)  %02d:%02d:%02d\r\n",
+          tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
+          wd[tm->tm_wday],
+          tm->tm_hour, tm->tm_min, tm->tm_sec);
+  }
+
+  {
+    auto tm = localtime(&t); // for local timezone.
+    M5.Display.setCursor(0,40);
+    M5.Log.printf("ESP32 %s:%04d/%02d/%02d (%s)  %02d:%02d:%02d\r\n", NTP_TIMEZONE,
+          tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
+          wd[tm->tm_wday],
+          tm->tm_hour, tm->tm_min, tm->tm_sec);
+  }
+}
+
+#if !defined ( ARDUINO )
+extern "C" {
+  void loopTask(void*)
+  {
+    setup();
+    for (;;) {
+      loop();
+    }
+    vTaskDelete(NULL);
+  }
+
+  void app_main()
+  {
+    xTaskCreatePinnedToCore(loopTask, "loopTask", 8192, NULL, 1, NULL, 1);
+  }
+}
+#endif