espark-core 0.4.0

The core module of the Espark ESP32-based IoT device management framework.

Espark

Espark is a lightweight framework for building scalable and efficient ESP32-based IoT applications. It provides a modular architecture, easy-to-use APIs, and built-in support for common IoT protocols.

Project Goals

• Simplify the development of ESP32 applications.
• Provide a modular and extensible architecture.
• Support common IoT protocols like MQTT.
• Ensure efficient resource management for low-power devices.
• Provide a clean and easy-to-use API.
• Provide an user-friendly UI for configuration and monitoring.

Features

• Device Provisioning: Easy setup and configuration of ESP32 devices.
• Telemetry Collection: Built-in support for collecting and sending telemetry data.
• Scalable Architecture: Designed to handle a large number of devices efficiently.
• Seamless Communication: Support for MQTT protocol.

Hardware Requirements

• ESP32 Development Board
• USB Cable for programming and power
• Optional: Sensors and triggers for specific applications

Project Structure

espark/
├── espark-core/
│   ├── esparkcore/      # FastAPI backend framework
│   │   ├── data/              # Models, repositories
│   │   ├── routers/           # API endpoints
│   │   ├── schedules/         # Background tasks
│   │   ├── services/          # Business logic, MQTT handling
│   │   └── utils/             # Utility functions
│   └── Makefile
├── espark-node/
│   ├── esparknode/      # MicroPython application framework
│   │   ├── actions/           # Action handlers
│   │   ├── data/              # Data storage
│   │   ├── libraries/         # External libraries
│   │   ├── networks/          # Network management
│   │   ├── sensors/           # Sensor interfaces
│   │   ├── triggers/          # Trigger interfaces
│   │   ├── utils/             # Utility functions
│   │   └── base_node.py       # Main application file
│   └── Makefile
└── espark-react/        # React frontend application
    ├── src/
    │   ├── data/              # Data models and data providers
    │   ├── i18n/              # Internationalization files
    │   ├── pages/             # Application pages
    │   ├── routes/            # Application routing
    │   ├── utils/             # Utility functions
    │   ├── App.tsx            # Main application component
    │   └── index.tsx          # Application entry point
    └── package.json

Development Workflows

Setting up the backend

1. Add espark-core as a dependency in your FastAPI project.
2. Configure database connections and MQTT settings as environment variables.
3. Implement additional data models, repositories, routers, and business logic if needed.
4. Add the DeviceRouter, TelemetryRouter, and other additional routers to your FastAPI app.

Setting up the ESP32 application

1. Clone the espark-node repository to your local machine.
2. Copy espark-core/Makefile.template to Makefile and customize it for your device.
3. Run make upgrade to copy the espark-core library to your device project.
4. Implement device-specific actions, sensors, and triggers as needed.
5. Run make flash to upload the firmware to your ESP32 device.
6. Run make deploy to upload the application to the device.

Setting up the frontend

1. Add espark-react as a dependency in your React project.
2. Render <EsparkApp /> in your main application file.

Configurations

• espark-core: Use environment variables, or .env file, for database and MQTT configurations.
• espark-node: Use esparknode.configs for device-specific configurations.
• espark-react: Customise EsparkApp props for application settings.

Examples and Patterns

• Router Example: device_router.py in espark-core/esparkcore/routers/ demonstrates how to create API endpoints for device management.
• Respository Example: device_repository.py in espark-core/esparkcore/data/repositories/ shows how to implement data access logic for devices.
• Action Example: esp32_relay.py in espark-node/esparknode/actions/ illustrates how to define actions for ESP32 devices.
• Sensor Example: sht20_sensor.py in espark-node/esparknode/sensors/ demonstrates how to read data from a SHT20 sensor.
• Trigger Example: gpio_trigger.py in espark-node/esparknode/triggers/ shows how to create GPIO-based triggers for device actions.
• List, Show, Edit Screens Example: DeviceList, DeviceShow, and DeviceEdit components in espark-react/src/pages/devices/ demonstrate how to create CRUD screens for device management.

Example Projects

• Espartan: A smart thermostat and open-door alert automation system using ESP32-C3 devices, leveraging espark for device management and telemetry, available at https://github.com/ayltai/Espartan.