ESP32 Code for ChatGPT Integration

#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>
#include <BluetoothSerial.h>

// Wi-Fi credentials
const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";
const char* api_key = "your_OPENAI_API_KEY";  // Your OpenAI API Key
const char* api_url = "https://api.openai.com/v1/completions";  // OpenAI API URL

// GPIO pin for controlling light (using a relay)
const int lightPin = 15;

// Bluetooth and microphone objects
BluetoothSerial btSerial;

void setup() {
  Serial.begin(115200);
  pinMode(lightPin, OUTPUT);

  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to Wi-Fi...");
  }
  Serial.println("Connected to Wi-Fi.");

  // Initialize Bluetooth for feedback
  btSerial.begin("ESP32_Home_Automation");
  Serial.println("Bluetooth device ready to pair.");

  // Setup microphone here (specific code depends on your microphone library/setup)
}

void loop() {
  String userCommand = getVoiceInput();  // Capture voice input and convert to text

  // Send the user command to ChatGPT for processing
  String response = getChatGPTResponse(userCommand);

  // Handle ChatGPT response
  Serial.println("ChatGPT Response: " + response);

  // Parse response and control GPIO for the light or other devices
  if (response.indexOf("turn on the lights") != -1) {
    digitalWrite(lightPin, HIGH);  // Turn on the light
    sendBluetoothFeedback("Lights turned ON.");
  } else if (response.indexOf("turn off the lights") != -1) {
    digitalWrite(lightPin, LOW);  // Turn off the light
    sendBluetoothFeedback("Lights turned OFF.");
  }

  delay(10000);  // Wait before next command
}

String getVoiceInput() {
  // This function should capture voice input using the microphone and convert it to text
  // In this example, we simulate the input with a placeholder
  return "Turn on the lights";  // Replace with actual speech-to-text processing
}

String getChatGPTResponse(String userInput) {
  HTTPClient http;
  http.begin(api_url);
  http.addHeader("Content-Type", "application/json");
  http.addHeader("Authorization", String("Bearer ") + api_key);

  // Create JSON payload for the request
  StaticJsonDocument<256> doc;
  doc["model"] = "text-davinci-003";
  doc["prompt"] = userInput;
  doc["max_tokens"] = 50;

  String requestBody;
  serializeJson(doc, requestBody);

  int httpResponseCode = http.POST(requestBody);

  String response = "";
  if (httpResponseCode == 200) {
    response = http.getString();  // Get response from ChatGPT
  } else {
    Serial.println("Error: " + String(httpResponseCode));
  }

  http.end();  // Close connection
  return parseChatGPTResponse(response);
}

String parseChatGPTResponse(String response) {
  // Parse the response JSON from ChatGPT
  StaticJsonDocument<1024> doc;
  deserializeJson(doc, response);

  String result = doc["choices"][0]["text"].as<String>();
  result.trim();
  return result;
}

void sendBluetoothFeedback(String message) {
  // Send voice feedback to the user via the Bluetooth speaker
  if (btSerial.hasClient()) {
    btSerial.println(message);
    Serial.println("Bluetooth Feedback: " + message);
  } else {
    Serial.println("No Bluetooth connection.");
  }
}