Add GC9A01 round TFT display usermod

.gitignore

@@ -22,11 +22,12 @@ wled-update.sh
 /build_output/
 /node_modules/
 /logs/
-
+/tools/organize_firmware.py
 /wled00/extLibs
 /wled00/LittleFS
 /wled00/my_config.h
 /wled00/Release
 /wled00/wled00.ino.cpp
 /wled00/html_*.h
 /wled00/js_*.h
+WLED.code-workspace

usermods/usermod_v2_gc9a01_display/library.json

@@ -0,0 +1,7 @@
+{
+  "name": "gc9a01_display",
+  "build": { "libArchive": false },
+  "dependencies": {
+    "bodmer/TFT_eSPI": "^2.5.43"
+  }
+}

usermods/usermod_v2_gc9a01_display/readme.md

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+# GC9A01 Display Usermod
+
+A fully-featured WLED usermod providing comprehensive visual interface on GC9A01 240x240 round TFT displays with complete rotary encoder integration.
+
+## Features
+
+### Visual Interface
+
+- **Circular Design**: Optimized for 240x240 round displays with blue bezel theming
+- **Real-time Clock**: Large digital clock display (12/24-hour formats)
+- **WiFi Signal Strength**: Visual signal strength indicator with 4-level bars (25%, 50%, 75%, 100%)
+- **Power Status**: Dynamic "OFF [switch] ON" layout with contextual text
+- **Brightness Arc**: Semicircular brightness visualization
+- **Color Controls**: Three color buttons (FX, BG, CS) with live color preview and automatic updates
+- **Effect Display**: Current effect name
+- **Palette Display**: Current palette name
+- **Startup Logo**: WLED logo display during initialization
+
+### Modes
+
+- **Sleep Mode**: Automatic display sleep after configurable timeout (5-300 seconds)
+- **Clock Mode**: Alternative to sleep - shows clock instead of turning off display
+- **Wake on Interaction**: Automatic wake on rotary encoder use or button press
+- **Unified Timeout**: Single configurable timeout controls both sleep and clock modes
+- **Backlight Control**: PWM-based brightness control (0-100%)
+
+### Performance Features
+
+- **State Caching**: Minimal redraws using comprehensive change detection
+- **Smart Updates**: Automatic color button updates when colors change from any source (web UI, API, etc.)
+- **Non-blocking Updates**: Asynchronous display updates following Four Line Display ALT pattern
+- **Memory Optimized**: Efficient memory usage with proper cleanup
+- **Debug Support**: Comprehensive debug logging with WLED macros
+
+## Hardware Requirements
+
+- ESP32 development board
+- GC9A01 240x240 TFT display (round)
+- Optional: Rotary encoder (usermod_v2_rotary_encoder_ui_ALT)
+
+## Wiring
+
+### GC9A01 Display
+
+| GC9A01 Pin | ESP32 Pin | Function    | Description |
+|------------|-----------|-------------|-------------|
+| VCC        | 3.3V      | Power       | 3.3V power supply |
+| GND        | GND       | Ground      | Common ground |
+| SCL/SCLK   | GPIO18    | SPI Clock   | SPI clock signal |
+| SDA/MOSI   | GPIO23    | SPI MOSI    | SPI data out |
+| RES/RST    | GPIO17    | Reset       | Display reset |
+| DC         | GPIO15    | Data/Command| Data/Command control |
+| CS         | GPIO5     | Chip Select | SPI chip select |
+| BL         | GPIO26    | Backlight   | Backlight control |
+
+**Note**: Pin assignments can be customized via build flags (see Configuration section).
+
+### Basic Setup
+
+Add to your `platformio_override.ini`:
+
+```ini
+[env:esp32_gc9a01]
+extends = env:esp32dev
+upload_speed = 460800
+monitor_speed = 115200
+custom_usermods =
+  usermod_v2_gc9a01_display
+  usermod_v2_rotary_encoder_ui_ALT
+build_flags = ${common.build_flags} ${esp32_idf_V4.build_flags}
+  -D WLED_DEBUG
+  -D WLED_DISABLE_BROWNOUT_DET
+  -D USERMOD_GC9A01_DISPLAY
+  -DUSER_SETUP_LOADED=1
+  -DGC9A01_DRIVER=1
+  -DTFT_WIDTH=240
+  -DTFT_HEIGHT=240
+  -DTFT_MOSI=23
+  -DTFT_SCLK=18
+  -DTFT_CS=5
+  -DTFT_DC=15
+  -DTFT_RST=17
+  -DTFT_BL=26
+  -DTOUCH_CS=-1
+  -DLOAD_GLCD=1
+  -DLOAD_FONT2=1
+  -DLOAD_FONT4=1
+  -DLOAD_FONT6=1
+  -DLOAD_FONT7=1
+  -DLOAD_FONT8=1
+  -DLOAD_GFXFF=1
+  -DSMOOTH_FONT=1
+  -DSPI_FREQUENCY=27000000
+# Rotary encoder settings
+  -D ENCODER_DT_PIN=25
+  -D ENCODER_CLK_PIN=32
+  -D ENCODER_SW_PIN=27
+```
+
+### Debug Information
+
+Enable debug output with `-D WLED_DEBUG` to see detailed logging:
+
+- Display initialization status and TFT_eSPI configuration
+- Update timing information and redraw triggers
+- State change detection (brightness, effect, colors, etc.)
+- Sleep/wake events and timeout tracking
+- Error conditions and recovery attempts
+
+Debug output appears in Serial Monitor at 115200 baud.
+
+## Change log
+
+- **v1** (2025-10-06):
+  - First public release