mirror of
https://github.com/ByteWelder/Tactility.git
synced 2026-10-17 02:45:05 +00:00
cb4ce5246d
- Create `USB_HOST_TYPE` base driver in TactilityKernel - Refactor esp32_usbhost dts format, and create child devices dynamically - Use PSRAM for task stacks where possible: saving 20 kB from just the task stacks, but roughly 30 kB when nothing is connected. - Allow the user to disable USB host interface in the USB settings app, saving an additionaly 20 kB of IRAM when nothing was connected. - Change listener-based APIs to subscribe and poll/await pattern. This avoids callstacks of apps and services leaking into the USB API This results in big IRAM savings: 30 kB when USB host is on and nothing is connected, and 50 kB total when USB host is disabled. This brings the total free IRAM after boot from roughly 170 kB to 200 kB (host enabled) or 220 kB (host disabled).
TactilityKernel
TactilityKernel is the core component of the Tactility project, providing a hardware abstraction layer (HAL) and essential kernel services for embedded systems.
Features
- Device and Driver Model: A flexible system for managing hardware devices and their corresponding drivers.
- Peripheral Support: Standard interfaces for common peripherals:
- GPIO (General Purpose Input/Output)
- I2C (Inter-Integrated Circuit)
- I2S (Inter-IC Sound)
- SPI (Serial Peripheral Interface)
- UART (Universal Asynchronous Receiver-Transmitter)
- Concurrency Primitives: Built-in support for multi-threaded environments, including:
- Threads and Dispatchers
- Mutexes and Recursive Mutexes
- Event Groups
- Timers
- Module System: Support for loadable modules that can export symbols and provide runtime-extensible functionality.
- Device Tree Integration: Utilizes a devicetree-like system for hardware configuration and initialization.
- Cross-Platform: Designed to run on both embedded platforms (such as ESP32) and desktop environments (Linux) for simulation and testing.