This is an ESP32 application built using the ESP-IDF framework. It reads temperature and humidity data from a DHT22 sensor connected to GPIO 4, synchronizes time using SNTP, and supports Over-the-Air (OTA) firmware updates.

• DHT22 Sensor Integration: Reads temperature and humidity data.
• SNTP Time Sync: Synchronizes time with an NTP server.
• OTA Firmware Updates: Enables wireless firmware updates.

ota-sntp-esp32-app/
├── .devcontainer/         # Containerized development configuration
├── .vscode/               # VSCode configuration files
├── esp-idf-lib/           # External libraries and dependencies
├── main/                  # Source code for the application
│   ├── webpage/           # Webpage assets served by the HTTP server
│   ├── app_nvs.*          # Non-volatile storage handling
│   ├── DHT22.*            # DHT22 sensor integration
│   ├── http_server.*      # HTTP server implementation
│   ├── rgb_led.*          # RGB LED handling
│   ├── sntp_time_sync.*   # SNTP time synchronization
│   ├── wifi_app.*         # Wi-Fi application setup
│   └── wifi_reset_button.*# Wi-Fi reset button handling
├── partition_table/       # Partition configuration files
├── CMakeLists.txt         # CMake project configuration
├── partitions.csv         # Partition table file
├── sdkconfig              # ESP-IDF project configuration
└── README.md              # Project documentation

1. Install the ESP-IDF framework.
2. Connect the DHT22 sensor to your ESP32:
   • VCC: 3.3V or 5V
   • GND: Ground
   • DATA: GPIO 4

1. Clone the Repository:

   git clone https://github.com/Jjateen/ota-sntp-esp32-app.git
   cd ota-sntp-esp32-app

2. Set Up ESP-IDF:

   • Export ESP-IDF environment variables:

     . $HOME/esp/esp-idf/export.sh

3. Configure the Project:

   • Open the configuration menu:

     idf.py menuconfig

   • Set the GPIO for the DHT22 sensor under Component Config → DHT22 Settings.
   • Configure Wi-Fi and OTA settings.

4. Build and Flash:

   • Build the project:

     idf.py build

   • Flash the firmware:

     idf.py -p [PORT] flash

   Replace [PORT] with your ESP32's serial port (e.g., /dev/ttyUSB0 or COM3).

5. Monitor Output:

   • View the serial monitor:

     idf.py monitor

   • Exit the monitor with Ctrl+].