ESP32 TTGO TFT_eSPI TDisplay

Other Hardware Displays
1

Hi Folks
I thought I had a nice piece of code: After connecting to the internet to get the right Date and time, it shows date and time and it also uses a DHT22 sensor to show Temperature and Humidity. It works fine.
But strange enough at time 00:01 it stops working8
Here is my code, any suggestions are welcome.
#include <Wire.h>
#include <WiFi.h>
#include <TFT_eSPI.h>
#include <NTPClient.h>
#include <WiFiUdp.h>
#include <TimeLib.h>
#include <DHT.h>

// Replace with your network credentials
const char* ssid = "";
const char* password = "*";

// Setup for the display
TFT_eSPI tft = TFT_eSPI(); // Create TFT object

// DHT22 sensor setup
#define DHTPIN 15 // Pin connected to the DHT22
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

// NTP setup
WiFiUDP udp;
NTPClient timeClient(udp, "pool.ntp.org", 7200, 60000); // 7200 seconds offset for GMT +2

void setup() {
Serial.begin(115200);
tft.init();
tft.setRotation(1); // Adjust rotation if needed
tft.fillScreen(TFT_BLACK);

// Initialize DHT sensor
dht.begin();

// Connect to Wi-Fi
tft.setTextColor(TFT_WHITE);
tft.setTextSize(2);
tft.setCursor(10, 10);
tft.println("Connecting to WiFi.");
tft.setCursor(10, 75);

WiFi.begin(ssid, password);
bool toggleColor = false; // Flag to alternate color

while (WiFi.status() != WL_CONNECTED) {
delay(1000);

// Alternate background color
if (toggleColor) {
    tft.fillScreen(TFT_RED);
} else {
    tft.fillScreen(TFT_GREEN);
}
toggleColor = !toggleColor; // Toggle the color flag

tft.setCursor(10, 75);
tft.setTextColor(TFT_WHITE); // Set text color to white for visibility
tft.print(".");

}

tft.println("\nConnected to WiFi");

// Start NTP Client
timeClient.begin();
timeClient.forceUpdate();  // Force immediate update after Wi-Fi connection

// Set initial time
unsigned long epochTime = timeClient.getEpochTime();
setTime(epochTime);  // Set the internal time
displayDateTime();

}

void loop() {
// Update the time client
if (hour() == 0 && minute() == 1) { // Force NTP update at 00:01
timeClient.forceUpdate();
}

if (timeClient.update()) {
    unsigned long epochTime = timeClient.getEpochTime();
    setTime(epochTime);  // Update internal time
    displayDateTime();
}
delay(2000); // Update every 2 seconds

}

void displayDateTime() {
// Clear the display
tft.fillScreen(TFT_YELLOW);

// Get the current time
int currentHour = hour();
int currentMinute = minute();

// Format the time as hh:mm
String formattedHour = (currentHour < 10) ? "0" + String(currentHour) : String(currentHour);
String formattedMinute = (currentMinute < 10) ? "0" + String(currentMinute) : String(currentMinute);
String formattedTime = formattedHour + ":" + formattedMinute; // Format: HH:MM


// Get current date
int currentDay = day();
int currentMonth = month();
int currentYear = year();

// Format the date
String formattedDay = (currentDay < 10) ? "0" + String(currentDay) : String(currentDay);
String formattedMonth = (currentMonth < 10) ? "0" + String(currentMonth) : String(currentMonth);
String formattedDate = formattedDay + "/" + formattedMonth + "/" + String(currentYear % 100); // Format: DD/MM/YY



// Read temperature and humidity
float temperature = dht.readTemperature();
float humidity = dht.readHumidity();

// Check if reading failed
if (isnan(temperature) || isnan(humidity)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
}

// Print time, date, temperature, and humidity for debugging
Serial.print("Current Time: ");
Serial.println(formattedTime);
Serial.print("Current Date: ");
Serial.println(formattedDate);
Serial.print("Temperature: ");
Serial.println(temperature);
Serial.print("Humidity: ");
Serial.println(humidity);

// Display the date, time, temperature, and humidity on the screen
tft.setTextColor(TFT_RED);
tft.setTextSize(3);
tft.setCursor(3, 10);
tft.println("Date:");
tft.setCursor(96, 10);
tft.println(formattedDate);
tft.setCursor(3, 35);
tft.println("Time:");
tft.setCursor(98, 35);
tft.println(formattedTime);
tft.drawLine(0, 62, tft.width(), 62, TFT_GREEN);
 tft.drawLine(0, 63, tft.width(), 63, TFT_GREEN);
tft.drawLine(0, 64, tft.width(), 65, TFT_GREEN);
tft.drawLine(0, 65, tft.width(), 65, TFT_GREEN);  
tft.setTextColor(TFT_BLUE);
tft.setCursor(3, 70);
tft.println("Temp: ");
tft.setCursor(98, 70);
tft.println(String(temperature,1) + " C"); // Alternative method
tft.setCursor(3, 95);
tft.println("Hum: ");
tft.setCursor(98, 95);
tft.println(String(humidity,1) + " %");
// Go to light sleep for 60 seconds
    esp_sleep_enable_timer_wakeup(60 * 1000000); // Sleep for 60 seconds (in microseconds)
    esp_light_sleep_start(); // Enter light sleep

}

2

Welcome to the forum

Please follow the advice given in the link below when posting code, in particular the section entitled 'Posting code and common code problems'

Use code tags (the < CODE/ > icon above the compose window) to make it easier to read and copy for examination

https://forum.arduino.cc/t/how-to-get-the-best-out-of-this-forum

Please post your sketch, using code tags when you do. This prevents parts of it being interpreted as HTML coding and makes it easier to copy for examination

In my experience the easiest way to tidy up the code and add the code tags is as follows
Start by tidying up your code by using Tools/Auto Format in the IDE to make it easier to read. Then use Edit/Copy for Forum and paste what was copied in a new reply. Code tags will have been added to the code to make it easy to read in the forum thus making it easier to provide help.

3

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