error: partial update for error & multiple tries

paulgreg · Apr 13, 2021 · f557db5 · f557db5
1 parent f39e53f
commit f557db5
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Showing 2 changed files with 19 additions and 14 deletions.
diff --git a/display.h b/display.h
@@ -139,20 +139,20 @@ void displayWeather(Weather* weather) {
   } while (display.nextPage());
 }
 
-void displayCenteredText(char* text) {
+void displayError(char* text) {
+  int x = 0;
+  int y = display.height() - 20;
+  int w = display.width() / 2;
+  int h = 20;
   display.setFont(&FONT_SMALL);
-  display.setTextColor(GxEPD_BLACK);
-  int16_t tbx, tby; uint16_t tbw, tbh;
-  display.getTextBounds(text, 0, 0, &tbx, &tby, &tbw, &tbh);
-  uint16_t x = ((display.width() - tbw) / 2) - tbx;
-  uint16_t y = ((display.height() - tbh) / 2) - tby;
-  display.setFullWindow();
+  display.setTextColor(GxEPD_RED);
+
+  display.setPartialWindow(x, y, w, h);
   display.firstPage();
   do
   {
     display.fillScreen(GxEPD_WHITE);
-    display.setCursor(x, y);
+    display.setCursor(x + 5, y + 12);
     display.print(text);
-  }
-  while (display.nextPage());
+  } while (display.nextPage());
 }
diff --git a/esp32-weather-station.ino b/esp32-weather-station.ino
@@ -44,11 +44,16 @@ void loop() {
    uint64_t sleepTime = HOUR;
 
   if (!connectToWifi()) {
-    displayCenteredText("Can't connect to wifi");
-  } else {    
-    boolean jsonParsed = getJSON(URL);
+    displayError("Error : WIFI");
+  } else {
+    unsigned int retries = 5;
+    boolean jsonParsed = false;
+    while(!jsonParsed && (retries-- > 0)) {
+      delay(1000);
+      jsonParsed = getJSON(URL);
+    }
     if (!jsonParsed) {
-      displayCenteredText("Error getting JSON");
+      displayError("Error : JSON");
     } else {
       Weather weather;
       fillWeatherFromJson(&weather);