chore: The data is now updated every two hours

src/main.cpp

@@ -21,6 +21,9 @@ unsigned long previousMillis = 0;
 const long interval = 500;
 int dotCount = 0;
 
+const unsigned long updateInterval = 7200000;   // 2h
+unsigned long lastUpdate = 0;
+
 void drawGraph(const float *val, int len,
                uint16_t x0, uint16_t y0,
                uint16_t w,  uint16_t h,
@@ -53,9 +56,9 @@ void drawGraph(const float *val, int len,
     tft.setTextSize(1);
     char buf[16];
     snprintf(buf, sizeof(buf), "%.1f", vMax);
-    int16_t x1, y1;
+    int16_t bx, by;
     uint16_t bw, bh;
-    tft.getTextBounds(buf, 0, 0, &x1, &y1, &bw, &bh);
+    tft.getTextBounds(buf, 0, 0, &bx, &by, &bw, &bh);
     tft.setCursor(x0 + w - bw - 1, y0 - bh - 1);
     tft.print(buf);
 
@@ -64,58 +67,32 @@ void drawGraph(const float *val, int len,
     tft.print(buf);
 }
 
-void setup() {
+void updateData() {
-    Serial.begin(115200);
-    tft.initR(INITR_BLACKTAB);
-    tft.setRotation(1);
-    tft.setSPISpeed(40000000);
-    tft.fillScreen(ST77XX_BLACK);
-    tft.setTextColor(ST77XX_WHITE);
-    tft.setTextSize(1);
-
-    WiFi.begin(ssid, password);
-    while (WiFi.status() != WL_CONNECTED) {
-        unsigned long currentMillis = millis();
-        if (currentMillis - previousMillis >= interval) {
-            previousMillis = currentMillis;
-            tft.fillScreen(ST77XX_BLACK);
-            tft.setCursor(0, 10);
-            tft.print("Connecting");
-            for (int i = 0; i < dotCount; ++i) tft.print('.');
-            dotCount = (dotCount + 1) % 4;
-        }
-    }
-
-    tft.fillScreen(ST77XX_BLACK);
-    tft.setCursor(0, 10);
-    tft.print("Connected: ");
-    tft.print(WiFi.localIP());
-
     configTime(0, 0, "pool.ntp.org", "time.nist.gov");
     struct tm ti;
-    while (!getLocalTime(&ti));
+    if (!getLocalTime(&ti)) return;
+
     char endDate[11], startDate[11];
     strftime(endDate, sizeof(endDate), "%Y-%m-%d", &ti);
     ti.tm_mon--;
     mktime(&ti);
     strftime(startDate, sizeof(startDate), "%Y-%m-%d", &ti);
 
-    tft.fillScreen(ST77XX_BLACK);
-    tft.setCursor(0, 10);
-
     WiFiClientSecure client;
     client.setInsecure();
     HTTPClient http;
 
     String url = String(kekkai) + "/api/getRate/?from_currency=USD&conv_currency=RUB&date=" + endDate;
     http.begin(client, url.c_str());
-    int code = http.GET();
+    if (http.GET() == HTTP_CODE_OK) {
-    if (code == HTTP_CODE_OK) {
         DynamicJsonDocument d(1024);
         String p = http.getString();
         deserializeJson(d, p);
         float rate = d["rate"].as<float>();
 
+        tft.fillScreen(ST77XX_BLACK);
+        tft.setCursor(0, 10);
+
         tft.printf("1 USD = %.4f RUB", rate);
     }
     http.end();
@@ -124,8 +101,7 @@ void setup() {
         + "/api/getRate/?from_currency=USD&conv_currency=RUB&start_date=" + startDate
         + "&end_date=" + endDate;
     http.begin(client, url.c_str());
-    code = http.GET();
+    if (http.GET() == HTTP_CODE_OK) {
-    if (code == HTTP_CODE_OK) {
         DynamicJsonDocument d(32768);
         String p = http.getString();
         deserializeJson(d, p);
@@ -141,4 +117,45 @@ void setup() {
     http.end();
 }
 
-void loop() {}
+
+void setup() {
+    Serial.begin(115200);
+    tft.initR(INITR_BLACKTAB);
+    tft.setRotation(1);
+    tft.setSPISpeed(40000000);
+    tft.fillScreen(ST77XX_BLACK);
+    tft.setTextColor(ST77XX_WHITE);
+    tft.setTextSize(1);
+
+    WiFi.begin(ssid, password);
+    previousMillis = millis();
+    dotCount = 0;
+    while (WiFi.status() != WL_CONNECTED) {
+        unsigned long currentMillis = millis();
+        if (currentMillis - previousMillis >= interval) {
+            previousMillis = currentMillis;
+            tft.fillScreen(ST77XX_BLACK);
+            tft.setCursor(10, 10);
+            tft.print("Connecting");
+            for (int i = 0; i < dotCount; i++) {
+                tft.print(".");
+            }
+            dotCount++;
+            if (dotCount > 3) {
+                dotCount = 0;
+            }
+        }
+    }
+
+    tft.fillScreen(ST77XX_BLACK);
+    updateData();
+    lastUpdate = millis();
+}
+
+
+void loop() {
+    if (millis() - lastUpdate >= updateInterval) {
+        updateData();
+        lastUpdate = millis();
+    }
+}