Overview
Stats
103 commits, +5,678/-2,341 lines, 112 files, 18 active days
Languages
C (+3,245), Python (+1,123), Config (+534), Shell (+287), Other (+189)
Projects
widget-firmware (85), widget-cli (12), widget-test-harness (6)
November focused on implementing the sensor fusion subsystem and establishing an automated testing framework. The new sensor architecture enables accurate environmental monitoring while the test infrastructure ensures regression-free releases.
Key Changes & Features
- Sensor Fusion Implementation
- Integrated temperature, humidity, and pressure sensors into a unified environmental monitoring system.
- Implemented a Kalman filter for sensor data smoothing and noise reduction.
- Added calibration routines with persistent storage of calibration coefficients in flash.
- Automated Testing Framework
- Created a hardware-in-the-loop (HIL) test harness using Python and pytest.
- Implemented mock sensor data injection for deterministic test execution.
- Added continuous integration support with automated firmware builds and test runs.
- LED Status System
- Designed a multi-color LED status indication system with configurable patterns.
- Implemented priority-based LED control allowing critical alerts to override normal status.
- Added smooth fade transitions between states for improved visual feedback.
Technologies & Languages
- Embedded C: Sensor driver development and fusion algorithm implementation.
- Python: Test framework development using pytest and hardware control libraries.
- I2C/SPI: Low-level communication with environmental sensors.
Patterns & Architecture
- Observer Pattern: Sensor subsystem publishes readings to registered listeners, enabling loose coupling.
- State Machine: LED controller uses a hierarchical state machine for managing complex animation sequences.
- Dependency Injection: Test harness uses DI to swap real hardware with mock implementations.