ESP32 Smartwatch

A smartwatch project built using the ESP32 and ESP-IDF. It features an LVGL-powered display interface, MAX30100 heart rate sensor integration, Wi-Fi capabilities, and a real-time OS architecture using FreeRTOS.

Features

• Real-time application using FreeRTOS
• GUI powered by LVGL
• Heart rate monitoring using MAX30100
• Wi-Fi configuration and event handling
• Support for I2C, SPI, and GPIO peripherals

Project Structure

main/ ├── main.c # Application entry point ├── lvglPort.c/h # LVGL platform driver integration ├── max30100.c/h # MAX30100 sensor drivers ├── wifiManager.c/h # Wi-Fi management code ├── ui.c # UI code and LVGL bindings ├── timeSync.c # Time synchronization functions ├── notify.c # Notifications and alerts ├── registers.h # Device registers

Requirements

• Use Linux
• ESP-IDF v5.x: https://docs.espressif.com/projects/esp-idf/en/latest/esp32/
• ESP32 Development Board (e.g., ESP32-WROOM)
• ILI9341 display
• MPU9250 sensor
• MAX30100 sensor

Getting Started

1. Set Up ESP-IDF Follow the ESP-IDF setup guide: https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-started/index.html

   Example for Linux/macOS: $ git clone --recursive https://github.com/espressif/esp-idf.git $ cd esp-idf $ ./install.sh $ ./export.sh

2. Clone this Repository $ git clone https://github.com/ee23btech11217/esp32-smartwatch.git $ cd esp32-smartwatch $ git checkout mnepraj

3. Configure the Project $ cd ~/esp/esp-idf $ ./export.sh $ cd ../../esp32-smartwatch $ idf.py menuconfig

4. Build the Project $ idf.py build

5. Flash to ESP32 Connect the board via USB, then: $ idf.py -p /dev/ttyUSB0 flash (Replace /dev/ttyUSB0 with your port, e.g., COM3 on Windows)

6. Monitor Serial Output $ idf.py -p /dev/ttyUSB0 monitor (Exit with Ctrl + ])

Troubleshooting

• Device not found: Check port name using ls /dev/tty* or Device Manager
• Flashing errors: Try idf.py erase_flash before re-flashing
• Build errors: Ensure all required components are in components/ or installed via idf.py

License

This project is licensed under the MIT License. See LICENSE file for details.

Acknowledgments

• ESP-IDF: https://github.com/espressif/esp-idf
• LVGL: https://github.com/lvgl/lvgl