View difference between Paste ID: AnhDKhBq and 4Ec6d4xY

 // based on @martinbateman clock code
 // https://t.co/1gRc56wNOE
 #include <WiFi.h>
 #include <NTPClient.h>
 #include <WiFiUdp.h>
 #include <PubSubClient.h>
 
 
 #include <TFT_eSPI.h>
 #include <SPI.h>
 
 #include <TimeLib.h>
 
 #define TFT_BL          4  // Display backlight control pin
 
 // Replace with your network credentials
 const char* ssid     = "xxxxx";
 const char* password = "yyyyy";
 const char* mqtt_server = "simplesi.cloud";
 
 int cheer_red = 0;
 int cheer_green = 0;
 int cheer_blue = 0;
 unsigned int rgb565Decimal = 0x8410;
 unsigned int newrgb565Decimal;
 String colourString = "not set yet";
 String newColourString;
 
 String strData;
 String topicStr;
 
 
 
 WiFiUDP ntpUDP;
 NTPClient timeClient(ntpUDP);
 WiFiClient espClient;
 PubSubClient client(espClient);
 
 TFT_eSPI tft = TFT_eSPI();
 SemaphoreHandle_t serialMutex = NULL;
 void Task1 (void *pvParams);
 void Task2 (void *pvParams);
 
 void callback(char* topic, byte* payload, unsigned int length) {
 
   Serial.print("Message arrived in topic: ");
   Serial.println(topic);
   topicStr = topic;
 
   Serial.print("Message:");
 
   strData = "";
   for (int i = 0; i < length; i++) {
     Serial.print((char)payload[i]);
     strData += (char)payload[i];
   }
 
   Serial.println();
   Serial.println("-----------------------");
 
   if (topicStr.endsWith("cheerlights/rgb565Decimal")) {
 
     colourString = newColourString;
     rgb565Decimal = strData.toInt();
     Serial.println("*******");
 
     Serial.println(rgb565Decimal);
   }
   if (topicStr.endsWith("cheerlights")) {
 
     newColourString = "Cheerlights:" + strData + "                         ";
     //sixteenBitHex = newSixteenBitHex;
     Serial.println(strData);
   }
 } // end callback
 
 void reconnect() {
   // Loop until we're reconnected
   while (!client.connected()) {
     Serial.print("Attempting MQTT connection...");
     // Create a random client ID
     String clientId = "ESP8266Client-";
     clientId += String(random(0xffff), HEX);
     // Attempt to connect
     if (client.connect(clientId.c_str())) {
       Serial.println("connected");
       client.subscribe("cheerlights",1);
       client.subscribe("cheerlights/rgb565Decimal",1);
     } else {
       Serial.print("failed, rc=");
       Serial.print(client.state());
       Serial.println(" try again in 5 seconds");
       // Wait 5 seconds before retrying
       delay(5000);
     }
   }
 }
 
 void setup() {
   // put your setup code here, to run once:
   Serial.begin (115200);
   serialMutex = xSemaphoreCreateMutex ();
 
   if (TFT_BL > 0) {
     pinMode(TFT_BL, OUTPUT);
     digitalWrite(TFT_BL, HIGH);
   }
 
   tft.init();
   tft.setRotation(1);
   tft.fillScreen(TFT_BLACK);
 
   tft.setTextColor(TFT_YELLOW, TFT_BLACK); // Note: the new fonts do not draw the background colour
 
   WiFi.begin(ssid, password);
   while (WiFi.status() != WL_CONNECTED) {
     delay(500);
     Serial.println (".");
   }
   Serial.println(WiFi.localIP());
 
   timeClient.begin();
   timeClient.setTimeOffset(3600);
   client.setServer(mqtt_server, 1883);
   client.setCallback(callback);
 
 
   xTaskCreate (updateNTP, "NTP Client", 4096, NULL, 2, NULL);
   xTaskCreate (updateScreen, "Screen", 4096, NULL, 1, NULL);
 }
 
 void loop() {
   if (!client.connected()) {
     reconnect();
   }
   client.loop();
 }
 
 void updateNTP (void *pvParameters) {
   (void) pvParameters;
 
   for (;;) {
     if (xSemaphoreTake (serialMutex, (TickType_t)10) == pdTRUE) {
       while(!timeClient.update()) {
         timeClient.forceUpdate();
       }
       setTime (timeClient.getEpochTime ());
       xSemaphoreGive (serialMutex);
     }
     vTaskDelay ((1000/portTICK_PERIOD_MS) * 60 * 60);  // update every hour
   }
 }
 
 void updateScreen (void *pvParameters) {
   (void) pvParameters;
 
   for (;;) {
     if (xSemaphoreTake (serialMutex, (TickType_t)10) == pdTRUE) {
       char timeString[25];
       char colourString2[25];
       colourString.toCharArray(colourString2,25);
 
       time_t t = now ();
       sprintf (timeString, "%02i:%02i:%02i", hour (t), minute (t), second (t));
       xSemaphoreGive (serialMutex);
 
       tft.setTextColor(0x39C4, TFT_BLACK);
       tft.drawString("88:88:88",10,10,7);
       tft.setTextColor(rgb565Decimal, TFT_BLACK);
       tft.drawString (timeString, 10, 10, 7);
       tft.drawString (colourString2, 0, 80, 4);
     }
     vTaskDelay (1000/portTICK_PERIOD_MS);
   }
 }