synced time when on wifi

watchfaces/tetris-2.0/Watchy_Tetris.cpp

@@ -30,6 +30,8 @@ void WatchyTetris::drawWatchFace()
     // Background
     display.drawBitmap(0, 0, tetrisbg, DISPLAY_WIDTH, DISPLAY_HEIGHT, GxEPD_BLACK);
 
+    readWorldTime();
+
     //Hour
     display.drawBitmap(25, 20, tetris_nums_0[currentTime.Hour / 10], 40, 60, GxEPD_BLACK); //first digit
     display.drawBitmap(75, 20, tetris_nums_1[currentTime.Hour % 10], 40, 60, GxEPD_BLACK); //second digit

watchfaces/tetris-2.0/Watchy_Tetris.h

@@ -3,8 +3,12 @@
 
 #include <Watchy.h>
 #include "tetris.h"
+#include "wta.h"
 
-class WatchyTetris : public Watchy
+#undef WTA_TIMEZONE
+#define WTA_TIMEZONE "Europe/Paris"
+
+class WatchyTetris : public WatchySynced
 {
 public:
     WatchyTetris();

watchfaces/tetris-2.0/wta.cpp

@@ -0,0 +1,42 @@
+#include "wta.h"
+
+RTC_DATA_ATTR int worldTimeIntervalCounter = WTA_UPDATE_INTERVAL;
+
+void WatchySynced::readWorldTime()
+{
+    if (worldTimeIntervalCounter >= WTA_UPDATE_INTERVAL)
+    {
+        if (connectWiFi())
+        {
+            HTTPClient http;
+            http.setConnectTimeout(10000);
+            String queryURL = String(WTA_URL) + String(WTA_TIMEZONE);
+            http.begin(queryURL.c_str());
+            int httpResponseCode = http.GET();
+            if (httpResponseCode == 200)
+            {
+                String payload = http.getString();
+                JSONVar responseObject = JSON.parse(payload);
+                tmElements_t tm;
+                String datetime = String((const char *)responseObject["datetime"]);
+                tm.Year = datetime.substring(0, 4).toInt() - YEAR_OFFSET;
+                tm.Month = datetime.substring(5, 7).toInt();
+                tm.Day = datetime.substring(8, 10).toInt();
+                tm.Hour = datetime.substring(11, 13).toInt();
+                tm.Minute = datetime.substring(14, 16).toInt();
+                tm.Second = 0;
+                time_t t = makeTime(tm);
+                RTC.set(t);
+                RTC.read(currentTime);
+            }
+            http.end();
+            WiFi.mode(WIFI_OFF);
+            btStop();
+        }
+        worldTimeIntervalCounter = 0;
+    }
+    else
+    {
+        worldTimeIntervalCounter++;
+    }
+}

watchfaces/tetris-2.0/wta.h

@@ -0,0 +1,16 @@
+#ifndef WTA_H
+#define WTA_H
+
+#include <Watchy.h>
+
+#define WTA_URL "http://worldtimeapi.org/api/timezone/"
+#define WTA_TIMEZONE "Etc/UTC"
+#define WTA_UPDATE_INTERVAL 60 //minutes
+
+class WatchySynced : public Watchy
+{
+public:
+    void readWorldTime();
+};
+
+#endif