Device Setup rev_01

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    - Project: Device Setup
    - Source Code NOT compiled for: Arduino Nano ESP32
    - Source Code created on: 2025-07-22 01:08:23

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* قم بتمكين اتصال Wi-Fi على Arduino Nano ESP32 */
    /* للسماح بالتحكم عن بعد ونقل البيانات.  ايضا تشغيل */
    /* شاشه ولورا وبطاقه ذاكرهوشاشه nextion 5in  ومهام */
    /* بحاجه لتفصيل وخصوصا ازرار الشاشه */
/****** SYSTEM REQUIREMENT 2 *****/
    /* تنفيذ اتصالات Wi-Fi وواجهة عرض Nextion وتخزين */
    /* البيانات على بطاقة SD لأتمتة إنترنت الأشياء. */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */
/****** DEFINITION OF LIBRARIES *****/
#include <WiFi.h>
#include <SD.h>
#include <SPI.h>
#include <Nextion.h>

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);

// Wi-Fi credentials
const char* ssid = "Your_SSID";         // Replace with your Wi-Fi network SSID
const char* password = "Your_PASSWORD"; // Replace with your Wi-Fi password

// Nextion Display Serial connection
#define nexSerial Serial2 // Using Serial2 for Nextion
// If your hardware setup differs, adjust accordingly

// SD card chip select pin
const int chipSelect = 5; // GPIO5, adjust if necessary

// Nextion object
// Assuming Nextion HMI is a 5-inch model connected via Serial2
// The ID numbers are placeholders, adjust according to your Nextion setup
// For example, if you have a button with ID 1, you can control it as shown

// No specific Nextion object instantiation needed unless using a library
// We'll use the Nextion library functions directly

void setup_wifi() {
  delay(100);
  Serial.println();
  Serial.print("Connecting to WiFi: ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);

  int retries = 0;
  while (WiFi.status() != WL_CONNECTED && retries < 20) {
    delay(500);
    Serial.print(".");
    retries++;
  }

  if (WiFi.status() == WL_CONNECTED) {
    Serial.println();
    Serial.println("WiFi connected");
    Serial.print("IP address: ");
    Serial.println(WiFi.localIP());
  } else {
    Serial.println();
    Serial.println("Failed to connect WiFi");
  }
}

void setup(void) {
  Serial.begin(115200); // Serial for debugging
  nexSerial.begin(9600); // Nextion display baud rate

  // Initialize Wi-Fi
  setup_wifi();

  // Initialize SD card
  if (!SD.begin(chipSelect)) {
    Serial.println("Card Mount Failed");
    // Handle error if necessary
  } else {
    Serial.println("SD card initialized");
    // Optionally, read/write data
  }

  // Initialize Nextion display
  // Optional: send initial commands
  // For example, set brightness or clear screen
  nexSerial.write(0xFF);
  nexSerial.write(0xFF);
  nexSerial.write(0xFF);
  // Add any further initialization commands here
}

void loop(void) {
  // Handle Wi-Fi, display, and storage tasks
  // For demonstration, display Wi-Fi status on Nextion
  static unsigned long lastUpdate = 0;
  if (millis() - lastUpdate > 5000) { // Update every 5 seconds
    lastUpdate = millis();

    String statusText;
    if (WiFi.status() == WL_CONNECTED) {
      statusText = "WiFi: Connected";
    } else {
      statusText = "WiFi: Disconnected";
    }

    // Send status to Nextion
    // Assuming there's a text component with object ID 't0'
    // Format command: t0.txt="Status"
    String cmd = "t0.txt=\"" + statusText + "\"";
    sendNextionCommand(cmd);
  }

  // Example: Read and process Nextion events if needed
  // For simplicity, omitted here

  // Additional code for handling button presses, data transfer, etc.
}

// Helper function to send commands to Nextion
void sendNextionCommand(const String& cmd) {
  String command = cmd + "\xFF\xFF\xFF"; // Append 3 terminator bytes
  nexSerial.print(command);
}

// Optional: Function to read from Nextion if necessary
void readNextion() {
  while (nexSerial.available()) {
    char c = nexSerial.read();
    // Process incoming data if needed
  }
}