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esp32 deepseek

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基于ESP32，用于通过WiFi连接到DeepSeek API，并通过串口与API进行交互。
主要功能：
1. 硬件初始化：
   - 使用`U8G2`库初始化一个SSD1306 OLED显示屏。
   - 设置一个按键（连接到GPIO 2）用于输入。

2. WiFi连接：
   - 通过`WiFi`库连接到指定的WiFi网络。
   - 如果连接成功，显示“WiFi Connected”；否则，显示“WiFi Failed”并进入无限循环。

3. 串口通信：
   - 通过`Serial`库与计算机进行串口通信。
   - 用户可以输入消息，按下回车键（`n`）后，消息会被发送到DeepSeek API。

4. API请求：
   - 使用`WiFiClientSecure`库通过HTTPS连接到DeepSeek API。
   - 构建一个JSON格式的请求负载，包含用户输入的消息。
   - 发送请求并接收API的响应。

5. 响应解析：
   - 使用`ArduinoJson`库解析API返回的JSON响应。
   - 提取并显示API返回的消息内容。

6. 显示功能：
   - 使用`U8G2`库在OLED显示屏上显示消息。
   - 如果消息过长，会自动分页显示。
代码结构

- setup()：初始化硬件和WiFi连接。
- loop()：主循环，检测串口输入和按键状态，并处理API请求。
- serialEvent()：处理串口输入。
- displayMessage()：在OLED显示屏上显示消息。
- connectToWiFi()：连接到WiFi网络。
- cleanInput()*：清理用户输入，防止JSON格式错误。
- buildPayload()：构建发送到API的JSON负载。
- sendToAPI()：发送请求到API并接收响应。
- parseResponse()：解析API返回的JSON响应。

使用说明

1. 硬件连接：
   - 将SSD1306 OLED显示屏连接到ESP32的I2C引脚（SCL: GPIO 42, SDA: GPIO 41）。
   - 将一个按键连接到GPIO 2和VCC(暂时无用)

2. 软件配置：
   - 替换代码中的`ssid`、`password`和`api_key`为你的WiFi和DeepSeek API的凭据。

3. 运行：
   - 上传代码到ESP32。
   - 打开串口监视器，输入消息并按下回车键。
   - API的响应将显示在OLED屏幕上和串口监视器中。

注意事项

- 确保WiFi网络和API密钥正确。
- 如果API响应时间较长，调整`client.setTimeout()`的值。

Based on ESP32, this project connects to the DeepSeek API via WiFi and interacts with the API through serial communication.  
The main functionalities include:

---

### **1. Hardware Initialization**:
   - Initializes an SSD1306 OLED display using the `U8G2` library.
   - Configures a button (connected to GPIO 2) for input.

---

### **2. WiFi Connection**:
   - Connects to the specified WiFi network using the `WiFi` library.
   - Displays "WiFi Connected" if the connection is successful; otherwise, displays "WiFi Failed" and enters an infinite loop.

---

### **3. Serial Communication**:
   - Communicates with a computer via the `Serial` library.
   - Allows the user to input a message. When the Enter key (`n`) is pressed, the message is sent to the DeepSeek API.

---

### **4. API Request**:
   - Connects to the DeepSeek API via HTTPS using the `WiFiClientSecure` library.
   - Constructs a JSON-formatted request payload containing the user's input message.
   - Sends the request and receives the API's response.

---

### **5. Response Parsing**:
   - Parses the JSON response from the API using the `ArduinoJson` library.
   - Extracts and displays the content of the API's response.

---

### **6. Display Functionality**:
   - Displays messages on the OLED screen using the `U8G2` library.
   - Automatically paginates the display if the message is too long.

---

### **Code Structure**:
- **`setup()`**: Initializes hardware and WiFi connection.
- **`loop()`**: Main loop that checks for serial input and button state, and processes API requests.
- **`serialEvent()`**: Handles serial input.
- **`displayMessage()`**: Displays messages on the OLED screen.
- **`connectToWiFi()`**: Connects to the WiFi network.
- **`cleanInput()`**: Cleans user input to prevent JSON formatting errors.
- **`buildPayload()`**: Constructs the JSON payload to send to the API.
- **`sendToAPI()`**: Sends the request to the API and receives the response.
- **`parseResponse()`**: Parses the JSON response from the API.

---

### **Usage Instructions**:

1. **Hardware Connection**:
   - Connect the SSD1306 OLED display to the ESP32's I2C pins (SCL: GPIO 42, SDA: GPIO 41).
   - Connect a button to GPIO 2 and VCC (currently unused).

2. **Software Configuration**:
   - Replace `ssid`, `password`, and `api_key` in the code with your WiFi and DeepSeek API credentials.

3. **Running the Code**:
   - Upload the code to the ESP32.
   - Open the Serial Monitor, input a message, and press Enter.
   - The API's response will be displayed on the OLED screen and in the Serial Monitor.

---

### **Notes**:
- Ensure the WiFi network and API key are correct.
- If the API response time is long, adjust the value of `client.setTimeout()`.

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