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50c0a14a938762b7192197f8371d6cea3246dc09
tactility/Tactility/Source/app/display/Display.cpp
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Ken Van Hoeylandt 50c0a14a93 New kernel drivers and more (#560) 
- Added kernel base drivers for: display, pointer (touch, mouse, etc.), keyboard, adc, power supply and backlight
- Implement new kernel driver modules: `st7789-module` and `gt911-module`
- Implement ESP32 ADC "oneshot" kernel driver
- Implement ESP32  backlight kernel driver with ledc API
- Implemented `battery-sense` driver that allows for voltage measurement and creates a power supply child device
- Updated github actions
- Updated flash scripts
- Fix for esp32 legacy driver conflict with ADC
- Created separate `lilygo-tdeck` and `lilygo-tdeck-plus` devices
- Created `lilygo-module` with LilyGO kernel drivers
- Fix for intermittent errors in build related to code generation of `devicetree.c`
- `lvgl-module` can now map kernel drivers onto LVGL devices
- Created `KernelDisplayApp` as a mirror of `HalDisplayApp` (formerly `DisplayApp`)
- Removed `struct` and `enum` prefix in a lot of kernel driver cpp source files
- `lilygo-tdeck` and `lilygo-tdeck-plus` are now fully relying on kernel drivers and don't use any of the old HAL
2026-07-12 00:29:12 +02:00

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#include <Tactility/Tactility.h>
#include <tactility/lvgl_icon_shared.h>
#ifdef ESP_PLATFORM
#include <Tactility/service/displayidle/DisplayIdleService.h>
#endif
#include <Tactility/app/App.h>
#include <Tactility/hal/display/DisplayDevice.h>
#include <Tactility/hal/touch/TouchDevice.h>
#include <Tactility/lvgl/Toolbar.h>
#include <Tactility/settings/DisplaySettings.h>
#include <lvgl.h>
#include <tactility/log.h>
#include <tactility/lvgl_module.h>
namespace tt::app::display {
constexpr auto* TAG = "Display";
static std::shared_ptr<hal::display::DisplayDevice> getHalDisplay() {
return hal::findFirstDevice<hal::display::DisplayDevice>(hal::Device::Type::Display);
}
static bool hasCalibratableTouchDevice() {
auto touch_devices = hal::findDevices<hal::touch::TouchDevice>(hal::Device::Type::Touch);
for (const auto& touch_device : touch_devices) {
if (touch_device != nullptr && touch_device->supportsCalibration()) {
return true;
}
}
return false;
}
class HalDisplayApp final : public App {
settings::display::DisplaySettings displaySettings;
bool displaySettingsUpdated = false;
lv_obj_t* timeoutSwitch = nullptr;
lv_obj_t* timeoutDropdown = nullptr;
lv_obj_t* screensaverDropdown = nullptr;
static void onBacklightSliderEvent(lv_event_t* event) {
auto* slider = static_cast<lv_obj_t*>(lv_event_get_target(event));
auto* app = static_cast<HalDisplayApp*>(lv_event_get_user_data(event));
auto hal_display = getHalDisplay();
assert(hal_display != nullptr);
if (hal_display->supportsBacklightDuty()) {
int32_t slider_value = lv_slider_get_value(slider);
app->displaySettings.backlightDuty = static_cast<uint8_t>(slider_value);
app->displaySettingsUpdated = true;
hal_display->setBacklightDuty(app->displaySettings.backlightDuty);
}
}
static void onGammaSliderEvent(lv_event_t* event) {
auto* slider = static_cast<lv_obj_t*>(lv_event_get_target(event));
auto hal_display = hal::findFirstDevice<hal::display::DisplayDevice>(hal::Device::Type::Display);
auto* app = static_cast<HalDisplayApp*>(lv_event_get_user_data(event));
assert(hal_display != nullptr);
if (hal_display->getGammaCurveCount() > 0) {
int32_t slider_value = lv_slider_get_value(slider);
app->displaySettings.gammaCurve = static_cast<uint8_t>(slider_value);
app->displaySettingsUpdated = true;
hal_display->setGammaCurve(app->displaySettings.gammaCurve);
}
}
static void onOrientationSet(lv_event_t* event) {
auto* app = static_cast<HalDisplayApp*>(lv_event_get_user_data(event));
auto* dropdown = static_cast<lv_obj_t*>(lv_event_get_target(event));
uint32_t selected_index = lv_dropdown_get_selected(dropdown);
LOG_I(TAG, "Selected %u", (unsigned)selected_index);
auto selected_orientation = static_cast<settings::display::Orientation>(selected_index);
if (selected_orientation != app->displaySettings.orientation) {
app->displaySettings.orientation = selected_orientation;
app->displaySettingsUpdated = true;
lv_display_set_rotation(lv_display_get_default(), settings::display::toLvglDisplayRotation(selected_orientation));
}
}
static void onTimeoutSwitch(lv_event_t* event) {
auto* app = static_cast<HalDisplayApp*>(lv_event_get_user_data(event));
auto* sw = static_cast<lv_obj_t*>(lv_event_get_target(event));
bool enabled = lv_obj_has_state(sw, LV_STATE_CHECKED);
app->displaySettings.backlightTimeoutEnabled = enabled;
app->displaySettingsUpdated = true;
if (app->timeoutDropdown) {
if (enabled) {
lv_obj_clear_state(app->timeoutDropdown, LV_STATE_DISABLED);
if (app->screensaverDropdown) {
lv_obj_clear_state(app->screensaverDropdown, LV_STATE_DISABLED);
}
} else {
lv_obj_add_state(app->timeoutDropdown, LV_STATE_DISABLED);
if (app->screensaverDropdown) {
lv_obj_add_state(app->screensaverDropdown, LV_STATE_DISABLED);
}
}
}
}
static void onTimeoutChanged(lv_event_t* event) {
auto* app = static_cast<HalDisplayApp*>(lv_event_get_user_data(event));
auto* dropdown = static_cast<lv_obj_t*>(lv_event_get_target(event));
uint32_t idx = lv_dropdown_get_selected(dropdown);
// Map dropdown index to ms: 0=15s,1=30s,2=1m,3=2m,4=5m,5=Never
static const uint32_t values_ms[] = {15000, 30000, 60000, 120000, 300000, 0};
if (idx < (sizeof(values_ms)/sizeof(values_ms[0]))) {
app->displaySettings.backlightTimeoutMs = values_ms[idx];
app->displaySettingsUpdated = true;
}
}
static void onScreensaverChanged(lv_event_t* event) {
auto* app = static_cast<HalDisplayApp*>(lv_event_get_user_data(event));
auto* dropdown = static_cast<lv_obj_t*>(lv_event_get_target(event));
uint32_t idx = lv_dropdown_get_selected(dropdown);
// Validate index bounds before casting to enum
if (idx >= static_cast<uint32_t>(settings::display::ScreensaverType::Count)) {
return;
}
auto selected_type = static_cast<settings::display::ScreensaverType>(idx);
if (selected_type != app->displaySettings.screensaverType) {
app->displaySettings.screensaverType = selected_type;
app->displaySettingsUpdated = true;
}
}
static void onCalibrateTouchClicked(lv_event_t*) {
app::start("TouchCalibration");
}
public:
void onShow(AppContext& app, lv_obj_t* parent) override {
displaySettings = settings::display::loadOrGetDefault();
auto ui_density = lvgl_get_ui_density();
lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);
lv_obj_set_style_pad_row(parent, 0, LV_STATE_DEFAULT);
auto hal_display = getHalDisplay();
assert(hal_display != nullptr);
lvgl::toolbar_create(parent, app);
auto* main_wrapper = lv_obj_create(parent);
lv_obj_set_flex_flow(main_wrapper, LV_FLEX_FLOW_COLUMN);
lv_obj_set_width(main_wrapper, LV_PCT(100));
lv_obj_set_flex_grow(main_wrapper, 1);
// Backlight slider
if (hal_display->supportsBacklightDuty()) {
auto* brightness_wrapper = lv_obj_create(main_wrapper);
lv_obj_set_size(brightness_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
lv_obj_set_style_pad_hor(brightness_wrapper, 0, LV_STATE_DEFAULT);
lv_obj_set_style_border_width(brightness_wrapper, 0, LV_STATE_DEFAULT);
if (ui_density != LVGL_UI_DENSITY_COMPACT) {
lv_obj_set_style_pad_ver(brightness_wrapper, 4, LV_STATE_DEFAULT);
}
auto* brightness_label = lv_label_create(brightness_wrapper);
lv_label_set_text(brightness_label, "Brightness");
lv_obj_align(brightness_label, LV_ALIGN_LEFT_MID, 0, 0);
auto* brightness_slider = lv_slider_create(brightness_wrapper);
lv_obj_set_width(brightness_slider, LV_PCT(50));
lv_obj_align(brightness_slider, LV_ALIGN_RIGHT_MID, 0, 0);
lv_slider_set_range(brightness_slider, 0, 255);
lv_obj_add_event_cb(brightness_slider, onBacklightSliderEvent, LV_EVENT_VALUE_CHANGED, this);
lv_slider_set_value(brightness_slider, displaySettings.backlightDuty, LV_ANIM_OFF);
}
// Gamma slider
if (hal_display->getGammaCurveCount() > 0) {
auto* gamma_wrapper = lv_obj_create(main_wrapper);
lv_obj_set_size(gamma_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
lv_obj_set_style_pad_hor(gamma_wrapper, 0, LV_STATE_DEFAULT);
lv_obj_set_style_border_width(gamma_wrapper, 0, LV_STATE_DEFAULT);
if (ui_density != LVGL_UI_DENSITY_COMPACT) {
lv_obj_set_style_pad_ver(gamma_wrapper, 4, LV_STATE_DEFAULT);
}
auto* gamma_label = lv_label_create(gamma_wrapper);
lv_label_set_text(gamma_label, "Gamma");
lv_obj_align(gamma_label, LV_ALIGN_LEFT_MID, 0, 0);
lv_obj_set_y(gamma_label, 0);
auto* gamma_slider = lv_slider_create(gamma_wrapper);
lv_obj_set_width(gamma_slider, LV_PCT(50));
lv_obj_align(gamma_slider, LV_ALIGN_RIGHT_MID, 0, 0);
lv_slider_set_range(gamma_slider, 0, hal_display->getGammaCurveCount());
lv_obj_add_event_cb(gamma_slider, onGammaSliderEvent, LV_EVENT_VALUE_CHANGED, this);
uint8_t curve_index = displaySettings.gammaCurve;
lv_slider_set_value(gamma_slider, curve_index, LV_ANIM_OFF);
}
// Orientation
auto* orientation_wrapper = lv_obj_create(main_wrapper);
lv_obj_set_size(orientation_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
lv_obj_set_style_pad_all(orientation_wrapper, 0, LV_STATE_DEFAULT);
lv_obj_set_style_border_width(orientation_wrapper, 0, LV_STATE_DEFAULT);
auto* orientation_label = lv_label_create(orientation_wrapper);
lv_label_set_text(orientation_label, "Orientation");
lv_obj_align(orientation_label, LV_ALIGN_LEFT_MID, 0, 0);
auto* orientation_dropdown = lv_dropdown_create(orientation_wrapper);
// Note: order correlates with settings::display::Orientation item order
lv_dropdown_set_options(orientation_dropdown, "Landscape\nPortrait Right\nLandscape Flipped\nPortrait Left");
lv_obj_align(orientation_dropdown, LV_ALIGN_RIGHT_MID, 0, 0);
lv_obj_add_event_cb(orientation_dropdown, onOrientationSet, LV_EVENT_VALUE_CHANGED, this);
// Set the dropdown to match current orientation enum
lv_dropdown_set_selected(orientation_dropdown, static_cast<uint16_t>(displaySettings.orientation));
// Screen timeout
if (hal_display->supportsBacklightDuty()) {
auto* timeout_wrapper = lv_obj_create(main_wrapper);
lv_obj_set_size(timeout_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
lv_obj_set_style_pad_all(timeout_wrapper, 0, LV_STATE_DEFAULT);
lv_obj_set_style_border_width(timeout_wrapper, 0, LV_STATE_DEFAULT);
auto* timeout_label = lv_label_create(timeout_wrapper);
lv_label_set_text(timeout_label, "Auto screen off");
lv_obj_align(timeout_label, LV_ALIGN_LEFT_MID, 0, 0);
timeoutSwitch = lv_switch_create(timeout_wrapper);
if (displaySettings.backlightTimeoutEnabled) {
lv_obj_add_state(timeoutSwitch, LV_STATE_CHECKED);
}
lv_obj_align(timeoutSwitch, LV_ALIGN_RIGHT_MID, 0, 0);
lv_obj_add_event_cb(timeoutSwitch, onTimeoutSwitch, LV_EVENT_VALUE_CHANGED, this);
auto* timeout_select_wrapper = lv_obj_create(main_wrapper);
lv_obj_set_size(timeout_select_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
lv_obj_set_style_pad_all(timeout_select_wrapper, 0, LV_STATE_DEFAULT);
lv_obj_set_style_border_width(timeout_select_wrapper, 0, LV_STATE_DEFAULT);
auto* timeout_value_label = lv_label_create(timeout_select_wrapper);
lv_label_set_text(timeout_value_label, "Timeout");
lv_obj_align(timeout_value_label, LV_ALIGN_LEFT_MID, 0, 0);
timeoutDropdown = lv_dropdown_create(timeout_select_wrapper);
lv_dropdown_set_options(timeoutDropdown, "15 seconds\n30 seconds\n1 minute\n2 minutes\n5 minutes\nNever");
lv_obj_align(timeoutDropdown, LV_ALIGN_RIGHT_MID, 0, 0);
lv_obj_add_event_cb(timeoutDropdown, onTimeoutChanged, LV_EVENT_VALUE_CHANGED, this);
// Initialize dropdown selection from settings
uint32_t ms = displaySettings.backlightTimeoutMs;
uint32_t idx = 2; // default 1 minute
if (ms == 15000) idx = 0;
else if (ms == 30000)
idx = 1;
else if (ms == 60000)
idx = 2;
else if (ms == 120000)
idx = 3;
else if (ms == 300000)
idx = 4;
else if (ms == 0)
idx = 5;
lv_dropdown_set_selected(timeoutDropdown, idx);
if (!displaySettings.backlightTimeoutEnabled) {
lv_obj_add_state(timeoutDropdown, LV_STATE_DISABLED);
}
// Screensaver type
auto* screensaver_wrapper = lv_obj_create(main_wrapper);
lv_obj_set_size(screensaver_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
lv_obj_set_style_pad_all(screensaver_wrapper, 0, LV_STATE_DEFAULT);
lv_obj_set_style_border_width(screensaver_wrapper, 0, LV_STATE_DEFAULT);
auto* screensaver_label = lv_label_create(screensaver_wrapper);
lv_label_set_text(screensaver_label, "Screensaver");
lv_obj_align(screensaver_label, LV_ALIGN_LEFT_MID, 0, 0);
screensaverDropdown = lv_dropdown_create(screensaver_wrapper);
// Note: order correlates with settings::display::ScreensaverType enum order
lv_dropdown_set_options(screensaverDropdown, "None\nBouncing Balls\nMystify\nMatrix Rain\nStackChan");
lv_obj_align(screensaverDropdown, LV_ALIGN_RIGHT_MID, 0, 0);
lv_obj_add_event_cb(screensaverDropdown, onScreensaverChanged, LV_EVENT_VALUE_CHANGED, this);
lv_dropdown_set_selected(screensaverDropdown, static_cast<uint16_t>(displaySettings.screensaverType));
if (!displaySettings.backlightTimeoutEnabled) {
lv_obj_add_state(screensaverDropdown, LV_STATE_DISABLED);
}
}
if (hasCalibratableTouchDevice()) {
auto* calibrate_wrapper = lv_obj_create(main_wrapper);
lv_obj_set_size(calibrate_wrapper, LV_PCT(100), LV_SIZE_CONTENT);
lv_obj_set_style_pad_all(calibrate_wrapper, 0, LV_STATE_DEFAULT);
lv_obj_set_style_border_width(calibrate_wrapper, 0, LV_STATE_DEFAULT);
auto* calibrate_label = lv_label_create(calibrate_wrapper);
lv_label_set_text(calibrate_label, "Touch calibration");
lv_obj_align(calibrate_label, LV_ALIGN_LEFT_MID, 0, 0);
auto* calibrate_button = lv_button_create(calibrate_wrapper);
lv_obj_align(calibrate_button, LV_ALIGN_RIGHT_MID, 0, 0);
lv_obj_add_event_cb(calibrate_button, onCalibrateTouchClicked, LV_EVENT_SHORT_CLICKED, this);
auto* calibrate_button_label = lv_label_create(calibrate_button);
lv_label_set_text(calibrate_button_label, "Calibrate");
lv_obj_center(calibrate_button_label);
}
}
void onHide(AppContext& app) override {
if (displaySettingsUpdated) {
// Dispatch it, so file IO doesn't block the UI
const settings::display::DisplaySettings settings_to_save = displaySettings;
getMainDispatcher().dispatch([settings_to_save] {
settings::display::save(settings_to_save);
#ifdef ESP_PLATFORM
// Notify DisplayIdle service to reload settings
auto displayIdle = service::displayidle::findService();
if (displayIdle) {
displayIdle->reloadSettings();
}
#endif
});
}
}
};
extern const AppManifest manifest = {
.appId = "Display",
.appName = "Display",
.appIcon = LVGL_ICON_SHARED_DISPLAY_SETTINGS,
.appCategory = Category::Settings,
.createApp = create<HalDisplayApp>
};
} // namespace
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