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Fixes and improvements (#620)

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- Standardized keyboard input using Unicode-based key codes across supported devices and the simulator. Keyboards don't emit `LV_KEY_*` anymore.
- Refactored lilygo encoder driver into a reusable GPIO rotary encoder driver (see `Drivers/gpio-encoder-module/`). Added more features to the config file.
- Improved LVGL keyboard device management, including duplicate prevention and reliable reconnects.
- LVGL file mutex now registers with lvgl start/stop
- Improved LVGL startup/shutdown stability and memory allocation reliability.
- Increased simulator LVGL memory capacity and improved USB device-class handling.
This commit is contained in:
Ken Van Hoeylandt
2026-08-23 17:21:16 +02:00
committed by GitHub
parent 4fea48f433
commit db48dfe812
51 changed files with 1219 additions and 602 deletions
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Devices/simulator/Source/drivers/sdl_input.cpp
+21 -16
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@@ -1,7 +1,7 @@
// SPDX-License-Identifier: Apache-2.0
#include "sdl_input.h"
#include <lvgl.h>
#include <tactility/drivers/keyboard.h>
#include <SDL2/SDL.h>
@@ -27,22 +27,27 @@ void push_key(uint32_t key) {
key_queue_count++;
}
// Mirrors LVGL's own lv_sdl_keyboard.c keycode_to_ctrl_key(): maps navigation/control keys to
// LV_KEY_* constants. Printable characters arrive separately via SDL_TEXTINPUT.
uint32_t keycode_to_key(SDL_Keycode sdl_key) {
// Mirrors LVGL's own lv_sdl_keyboard.c keycode_to_ctrl_key(): every key returns a real Unicode
// codepoint per KeyboardKeyData::key's contract - never an LV_KEY_* constant, even for keys with
// no ordinary character of their own (arrows, Tab/Shift+Tab as focus nav, Home/End), which use the
// CodePoint enum's standard Unicode symbols for the concept. lvgl-module's keyboard.cpp translates
// all of these back to LVGL's own sentinels (CODEPOINT_ESCAPE/BACKSPACE/DELETE already equal their
// LV_KEY_* counterpart numerically, so no translation is needed for those). Printable characters
// arrive separately via SDL_TEXTINPUT.
uint32_t keycode_to_key(SDL_Keycode sdl_key, bool shift) {
switch (sdl_key) {
case SDLK_RIGHT: return LV_KEY_RIGHT;
case SDLK_LEFT: return LV_KEY_LEFT;
case SDLK_UP: return LV_KEY_UP;
case SDLK_DOWN: return LV_KEY_DOWN;
case SDLK_ESCAPE: return LV_KEY_ESC;
case SDLK_BACKSPACE: return LV_KEY_BACKSPACE;
case SDLK_DELETE: return LV_KEY_DEL;
case SDLK_RIGHT: return CODEPOINT_ARROW_RIGHT;
case SDLK_LEFT: return CODEPOINT_ARROW_LEFT;
case SDLK_UP: return CODEPOINT_ARROW_UP;
case SDLK_DOWN: return CODEPOINT_ARROW_DOWN;
case SDLK_ESCAPE: return CODEPOINT_ESCAPE;
case SDLK_BACKSPACE: return CODEPOINT_BACKSPACE;
case SDLK_DELETE: return CODEPOINT_DELETE;
case SDLK_RETURN:
case SDLK_KP_ENTER: return LV_KEY_ENTER;
case SDLK_TAB: return LV_KEY_NEXT;
case SDLK_HOME: return LV_KEY_HOME;
case SDLK_END: return LV_KEY_END;
case SDLK_KP_ENTER: return CODEPOINT_ENTER;
case SDLK_TAB: return CODEPOINT_TAB;
case SDLK_HOME: return CODEPOINT_HOME;
case SDLK_END: return CODEPOINT_END;
default: return 0;
}
}
@@ -75,7 +80,7 @@ void sdl_input_pump() {
}
break;
case SDL_KEYDOWN:
push_key(keycode_to_key(event.key.keysym.sym));
push_key(keycode_to_key(event.key.keysym.sym, (event.key.keysym.mod & KMOD_SHIFT) != 0));
break;
case SDL_TEXTINPUT:
// ASCII only (first byte of event.text.text) - sufficient for a simulator keyboard.