- 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).
- Enable BT by default in DTS, and create separate radio on/of functionality (like recent Wi-Fi changes)
- Bluetooth event handling now uses queued subscriptions, improving event delivery and application responsiveness.
- Improved synchronization of Bluetooth advertising, connections, HID, MIDI, and SPP operations.
- Enhanced cleanup during Bluetooth shutdown and subscription removal.
- Clarified Bluetooth start and stop behavior.
- Improved wifi driver subscription stability to prevent endless loops
Event handling:
- Added unified event handling for application, system, and Wi‑Fi events.
- Updated all apps to reflect event handling changes
Wi-Fi:
- Refactored event handling from listener interface to task & event group.
- Added direct Wi‑Fi radio controls and improved event subscriptions.
- Wi‑Fi screens now refresh asynchronously and handle unavailable devices more gracefully.
- Enabled Wi‑Fi by default on in dts files, but radio on/off is still done by code. The main reason was reliable event subscription and consistent devicetree states.
- Improved Wi‑Fi shutdown cleanup and radio-state handling.
Other:
- Renamed the Kernel Display app to Display.
* **New Features**
* Added native display support for ST7796, ILI9341, and ST7789 panels across supported boards.
* Added FT5x06 and FT6x36 touchscreen support.
* Generic PWM driver
* ESP32 PWM driver
* Generic RGB LED driver
* RGB PWM LED driver
* RGB GPIO LED driver
* Implementation of RGB LED for various boards
* **Improvements**
* Updated board hardware descriptions to use explicit display/touch/backlight device-tree bindings and disabled deprecated HAL usage.
* Improved display and touch-driver cleanup to prevent stale resources and improve shutdown reliability.
* Pinned esp-hosted library to a fixed version
* **Deletions**
* Obsolete placeholder display
* Legacy ILI9488 support.
* ESP32-specific LEDC PWM implementation
- Disable BlueTooth driver by default, to ensure it doesn't allocate memory
- Update BlueTooth settings app behaviour to make sure it starts/stops the devices
- Disable SPI RAM usage for ST7789 as it broke App Hub
- Reduce T-Display and T-Deck display buffers from 1/3rd to 1/10th of resolution
- Enabled dynamic buffers for MbedTLS to optimize memory
- TLS 1.3 did not work with dynamic buffers: downgrade to 1.2 for now
- WiFi is now enabled from the Boot app callback to the WiFi service, instead of the WiFi service start() function. This avoids a lockup when WiFi is started by the service while the Boot app is updating the WiFi settings.
* **Refactor**
* GPIO subsystem moved to a descriptor-based model for per-pin ownership and runtime pin management; many platform drivers now acquire/release descriptors.
* Device trees and drivers now use GPIO phandle-style pin specifications across all boards and all drivers.
* **Behavior**
* Device list now encodes per-device status (ok/disabled); boot will skip disabled devices accordingly.
* **Deprecation**
* Legacy GPIO HAL marked deprecated and replaced with descriptor-based interfaces.
* **Chores**
* Bindings and platform configs updated to the new GPIO pin-spec format.
- Implement SPI devices in dts files for all devices
- Removed `tt::hal::spi` HAL and its configurations
- Fix for devicetree generator "boolean" support
- Remove unused custom locks in all `DisplayDevice` implementations
- Fixed some bugs with devices
- Updated XPT2046 driver
- Fix for `WifiEsp` deadlock
- Export a lot of new `math.h` symbols with `tt_init.cpp`
- Created `SpiDeviceLock` in `TactilityCore` as a wrapper for kernel SPI locking
- Improved `TactilityKernel` SPI driver.
Devictree changes:
- Create DTS files for all remaining devices
- Update corresponding `devicetree.yaml`
- Remove `i2c` configuration from corresponding `tt::hal::Configuration`
Apps & HAL:
- Removed I2C Settings (we'll make a new one later after I rework that part of the HAL)
- Delete TactilityC GPIO and I2C functionality
- Delete Related SystemEvent types
- Refactor `tt::hal::i2c` to only use `struct Device*` wrapping
Scripting:
- Fix DevicetreeCompiler boolean parsing
- Create `build-all.py`
