Interesting Applications of ChatGPT on ESP32

1. Register on the OpenAI website and install the necessary libraries on ESP32;
2. Create a new project on the OpenAI API and generate an API key;
3. Use the API key to authenticate requests to the OpenAI API;
4. Send text input to the OpenAI API using HTTP requests and receive responses in JSON format;

5. Parse the response and use it to control the ESP32 microcontroller.

Now, I will implement the above steps on ESP32:

1. First, we need to include the necessary libraries so that the ESP32 can communicate over Wi-Fi, make HTTP requests, and parse JSON data.

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

2. Define the network credentials for the Wi-Fi network to which the ESP32 will connect, as well as the OpenAI API key.

const char* ssid     = "your_SSID";
const char* password = "your_PASSWORD";
const char* apiKey = "your_API_KEY";

void setup() {
    //
}

Serial.begin(9600);

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

// Send request to OpenAI API
String inputText = "Hello, ChatGPT!";
String apiUrl = "https://api.openai.com/v1/completions";
String payload = "{\"prompt\":\"" + inputText + "\",\"max_tokens\":100, \"model\": \"text-davinci-003\"}";

HTTPClient http;
http.begin(apiUrl);
http.addHeader("Content-Type", "application/json");
http.addHeader("Authorization", "Bearer " + String(apiKey));

The inputText string defines the prompt for the API, which in this case is “Hello, ChatGPT!”.

int httpResponseCode = http.POST(payload);
if (httpResponseCode == 200) {
  String response = http.getString();

  // Parse JSON response
  DynamicJsonDocument jsonDoc(1024);
deserializeJson(jsonDoc, response);
  String outputText = jsonDoc["choices"][0]["text"];
  Serial.println(outputText);
} else {
  Serial.printf("Error %i \n", httpResponseCode);
}

http.POST() will return the HTTP code of the response. If it is HTTP 200, we will parse the JSON and print it to the serial port.

void loop() {
    //
}

For the complete code, please reply with esp32_chatgpt in the backend of the “Embedded Base” public account to obtain it.