### Configure DisplayDriver with Fluent Builder API

Source: https://context7.com/decaday/display-driver/llms.txt

Shows the fluent builder pattern for pre-configuring display settings such as color format and orientation before initialization. Also provides an example of direct construction for manual initialization.

```rust
use display_driver::{ColorFormat, DisplayDriver, Orientation, LCDResetOption};
use display_driver_st7735::{St7735, spec::generic::Generic128x160Type1};
use display_driver_spi::SpiDisplayBus;

// Create bus and panel
let bus = SpiDisplayBus::new(spi_device, dc_pin);
let panel = St7735::<Generic128x160Type1, _, _>::new(LCDResetOption::new_pin(rst));

// Use builder to configure before initialization
let mut display = DisplayDriver::builder(bus, panel)
    .with_color_format(ColorFormat::RGB565)  // Set 16-bit color
    .with_orientation(Orientation::Deg270)   // Set landscape orientation
    .init(&mut delay)
    .await
    .unwrap();

// Alternative: Direct construction without builder
let mut display_direct = DisplayDriver::new(bus, panel);
display_direct.init(&mut delay).await.unwrap();
display_direct.set_color_format(ColorFormat::RGB565).await.unwrap();
display_direct.set_orientation(Orientation::Deg90).await.unwrap();
```

--------------------------------

### ST7789 Monitor UI Demo (STM32H7B0)

Source: https://github.com/decaday/display-driver/blob/master/examples/README.md

Showcases a Computer Monitor UI demo on a 135x240 ST7789 display with a modern dark theme. This example utilizes embedded-graphics and FrameBuffer for rendering.

```Rust
use embedded_graphics::prelude::*;
use embedded_graphics::FrameBuffer;
use embedded_graphics::pixelcolor::Rgb565;

// Assuming necessary UI elements and display setup are available
// This is a placeholder for the actual code
fn main() {
    // ... setup display ...
    // let mut ui = ComputerMonitorUI::new();
    // ui.draw(&mut display);
    // ... update display ...
}

// struct ComputerMonitorUI {
//     // ... UI elements ...
// }

// impl ComputerMonitorUI {
//     fn new() -> Self {
//         // ... initialization ...
//     }
//     fn draw<D: DrawTarget>(&mut self, display: &mut D) {
//         // ... drawing logic ...
//     }
// }

```

--------------------------------

### ST7735 Animation Demo (STM32H7B0)

Source: https://github.com/decaday/display-driver/blob/master/examples/README.md

A creative animation demo for a 128x128 ST7735 display, featuring FPS control set at 30 FPS. This example utilizes embedded-graphics and FrameBuffer.

```Rust
use embedded_graphics::prelude::*;
use embedded_graphics::FrameBuffer;
use embedded_graphics::pixelcolor::Rgb565;

// Assuming animation frames and display setup are available
// This is a placeholder for the actual code
fn main() {
    let mut frame_count = 0;
    let target_fps = 30;
    let frame_duration_micros = 1_000_000 / target_fps;

    // ... setup display ...

    loop {
        let start_time = micros(); // Assuming a micros() function is available

        // ... draw next animation frame ...
        // draw_frame(frame_count, &mut display);

        frame_count += 1;

        let elapsed_time = micros() - start_time;
        if elapsed_time < frame_duration_micros {
            sleep_micros(frame_duration_micros - elapsed_time);
        }
    }
}

// fn draw_frame<D: DrawTarget>(frame: u32, display: &mut D) {
//     // ... logic to draw a specific animation frame ...
// }

// fn micros() -> u32 {
//     // ... implementation to get current time in microseconds ...
// }

// fn sleep_micros(duration: u32) {
//     // ... implementation to sleep for a duration in microseconds ...
// }

```

--------------------------------

### GC9A01 Concentric Gradient Demo (STM32H7B0)

Source: https://github.com/decaday/display-driver/blob/master/examples/README.md

A demo featuring a concentric gradient with ordered dithering for the GC9A01 display (240x240). This example leverages embedded-graphics, FrameBuffer, and dithering techniques.

```Rust
use embedded_graphics::prelude::*;
use embedded_graphics::FrameBuffer;
use embedded_graphics::pixelcolor::Rgb565;
use embedded_graphics::image::Image;

// Assuming necessary dithering and gradient logic are available
// This is a placeholder for the actual code
fn main() {
    // ... setup display ...
    // let gradient = create_concentric_gradient();
    // let dithered_image = apply_ordered_dithering(&gradient);
    // display.draw(dithered_image.into_iter());
    // ... update display ...
}

// fn create_concentric_gradient() -> impl ImageSource<Rgb565> {
//     // ... gradient generation ...
// }

// fn apply_ordered_dithering(image: &impl ImageSource<Rgb565>) -> impl ImageSource<Rgb565> {
//     // ... dithering implementation ...
// }

```

--------------------------------

### Implement Custom ST7735 Panel Specification

Source: https://github.com/decaday/display-driver/blob/master/panels/st7735/README.md

This example shows how to define a custom `Spec` for the ST7735 driver when built-in generic or vendor specs do not match the display's requirements. It involves defining the panel's physical dimensions, offsets, color inversion, and BGR order, and then implementing the `St7735Spec` trait.

```rust
use display_driver_st7735::{PanelSpec, St7735Spec, impl_st7735_initr};

// 1. Define your type
pub struct MyCustomPanel;

// 2. Configure Resolution & Offsets
impl PanelSpec for MyCustomPanel {
    const PHYSICAL_WIDTH: u16 = 128;
    const PHYSICAL_HEIGHT: u16 = 160;

    // Panel Offset
    const PHYSICAL_X_OFFSET: u16 = 2;
    const PHYSICAL_Y_OFFSET: u16 = 1;

    // Optional Panel offset in pixels when the screen is rotated 180° or 270°.
    // Used for panels that are not physically centered within the frame.
    // If undefined, defaults to PHYSICAL_X_OFFSET / PHYSICAL_Y_OFFSET.
    const PHYSICAL_X_OFFSET_ROTATED: u16 = 2;
    const PHYSICAL_Y_OFFSET_ROTATED: u16 = 3;

    // Set true if colors are inverted (White is Black)
    const INVERTED: bool = true; 
    // Set true if Red and Blue are swapped (BGR Order)
    const BGR: bool = true; 
}

// 3. Implement St7735Spec
// Option A: Use default "InitR" sequence (Easiest)
impl_st7735_initr!(MyCustomPanel);

// Option B: manual implementation (Advanced)
// Include Gamma, Power, Frame Rate etc.
// impl St7735Spec for MyCustomPanel {
//      ... define const FRMCTR1_PARAMS, etc.
// }

```

--------------------------------

### Draw Ferris Picture with ST7735 (STM32H7B0)

Source: https://github.com/decaday/display-driver/blob/master/examples/README.md

Demonstrates drawing a Ferris picture on a 160x80 ST7735 display using embedded-graphics and FrameBuffer. This example is specific to the XX096T_IF09 display controller.

```Rust
use embedded_graphics::prelude::*;
use embedded_graphics::image::Image;
use embedded_graphics::pixelcolor::Rgb565;
use embedded_graphics_simulator::Display;

// Assuming necessary display driver and image data are available
// This is a placeholder for the actual code
fn main() {
    // ... setup display ...
    // let ferris_image = Image::new(Ferris, Point::zero());
    // display.draw(ferris_image.into_iter());
    // ... update display ...
}

```

--------------------------------

### Rotate Display with ST7735 (STM32H7B0)

Source: https://github.com/decaday/display-driver/blob/master/examples/README.md

Tests display rotation functionality for 160x80 and 128x128 ST7735 displays. It checks for offsets by rotating the display in four directions. This example uses embedded-graphics and FrameBuffer.

```Rust
use embedded_graphics::prelude::*;
use embedded_graphics::FrameBuffer;
use embedded_graphics::pixelcolor::Rgb565;

// Assuming necessary display driver and rotation logic are available
// This is a placeholder for the actual code
fn main() {
    // ... setup display ...
    // rotate_display(DisplayRotation::Degrees90);
    // ... verify display content ...
    // rotate_display(DisplayRotation::Degrees180);
    // ... verify display content ...
    // rotate_display(DisplayRotation::Degrees270);
    // ... verify display content ...
    // rotate_display(DisplayRotation::Degrees0);
    // ... verify display content ...
}

// fn rotate_display(rotation: DisplayRotation) {
//     // ... implementation to rotate the display ...
// }

```

--------------------------------

### Initialize Display Driver

Source: https://github.com/decaday/display-driver/blob/master/README.md

Demonstrates the initialization of a display driver using the `display-driver` framework. It configures reset options, creates a panel instance with a specific specification (e.g., `Generic128x160Type1` for ST7735), and binds it to a bus. The driver is then initialized with color format and orientation settings before writing frame data.

```rust
use display_driver::{ColorFormat, DisplayDriver, Orientation, LCDResetOption};
// The `Spec` (Generic128x160Type1) defines the hardware-specific constants (Gamma, Voltage).
use display_driver_st7735::{St7735, spec::generic::Generic128x160Type1};

// 1. Configure Reset
let reset_opt = LCDResetOption::new_pin(reset_pin);

// 2. Create the Panel instance using a Generic Spec (e.g., Generic128x160Type1)
let panel = St7735::<Generic128x160Type1, _, _>::new(reset_opt);

// 3. Bind Bus and Panel, Configure, and Initialize
// The driver orchestrates the logic, delegating transport to 'bus' and commands to 'panel'.
let mut display = DisplayDriver::builder(bus, panel)
    .with_color_format(ColorFormat::RGB565)
    // This framework automatically handles offsets.
    .with_orientation(Orientation::Deg90)
    .init(&mut delay).await.unwrap();

// Now you can use `display` to draw:
display.write_frame(fb).await.unwrap();

```

--------------------------------

### Define and Execute Initialization Sequences in Rust

Source: https://context7.com/decaday/display-driver/llms.txt

Demonstrates how to use the InitStep enum to define custom display controller initialization sequences. It supports commands, delays, conditional logic, and nested sequences, which are executed via the sequenced_init function.

```rust
use display_driver::panel::initseq::{InitStep, sequenced_init};

const MY_INIT_SEQUENCE: &[InitStep<'static>] = &[
    InitStep::SingleCommand(0x11),
    InitStep::DelayMs(120),
    InitStep::CommandWithParams(0x3A, &[0x55]),
    InitStep::select_cmd(true, 0x21, 0x20),
    InitStep::maybe_cmd_with(0xB1, Some(&[0x01, 0x2C, 0x2D])),
    InitStep::Nested(&[
        InitStep::SingleCommand(0x29),
        InitStep::DelayMs(20),
    ]),
    InitStep::Nop,
];

sequenced_init(
    MY_INIT_SEQUENCE.iter().copied(),
    &mut delay,
    &mut bus
).await.unwrap();
```

--------------------------------

### Initialize and Operate DisplayDriver in Rust

Source: https://context7.com/decaday/display-driver/llms.txt

Demonstrates the initialization of a DisplayDriver using a SPI bus and ST7789 panel. It covers writing framebuffers, updating specific pixel areas, and modifying display settings like orientation and color format at runtime.

```rust
use display_driver::{ColorFormat, DisplayDriver, Orientation, LCDResetOption, Area, FrameControl};
use display_driver_st7789::{St7789, spec::generic::Generic240x320Type1};
use display_driver_spi::SpiDisplayBus;

// Create the SPI bus with DC (Data/Command) pin
let spi_device = embedded_hal_bus::spi::ExclusiveDevice::new_no_delay(spi, cs_pin).unwrap();
let bus = SpiDisplayBus::new(spi_device, dc_pin);

// Create the panel with a reset pin
let panel = St7789::<Generic240x320Type1, _, _>::new(LCDResetOption::new_pin(reset_pin));

// Initialize the display using the builder pattern
let mut display = DisplayDriver::builder(bus, panel)
    .with_color_format(ColorFormat::RGB565)
    .with_orientation(Orientation::Deg90)
    .init(&mut delay)
    .await
    .unwrap();

// Write a full framebuffer to the display
let framebuffer: [u8; 240 * 320 * 2] = [0xFF; 240 * 320 * 2]; // White screen
display.write_frame(&framebuffer).await.unwrap();

// Write pixels to a specific area
let area = Area::new(10, 10, 100, 50); // x=10, y=10, width=100, height=50
let pixels: [u8; 100 * 50 * 2] = [0x00; 100 * 50 * 2]; // Black rectangle
display.write_pixels(area, FrameControl::new_standalone(), &pixels).await.unwrap();

// Change orientation at runtime
display.set_orientation(Orientation::Deg180).await.unwrap();

// Set color format
display.set_color_format(ColorFormat::RGB888).await.unwrap();
```

--------------------------------

### Initialize and Configure CO5300 Display Driver

Source: https://github.com/decaday/display-driver/blob/master/panels/co5300/README.md

Demonstrates how to instantiate the Co5300 driver using a specific panel spec and the DisplayDriver builder pattern. It covers setting up the reset pin, color format, orientation, and performing basic drawing operations.

```rust
use display_driver::{ColorFormat, DisplayDriver, Orientation, LCDResetOption, FrameControl, Area};
use display_driver_co5300::{Co5300, spec::AM196Q410502LK_196};

// Configure Reset
let reset_opt = LCDResetOption::new_pin(reset_pin);

// Create the Panel instance using a Spec
let panel = Co5300::<AM196Q410502LK_196, _, _>::new(reset_opt);

// Create the DisplayDriver using builder pattern
let mut display = DisplayDriver::builder(bus, panel)
    .with_color_format(ColorFormat::RGB565)
    .with_orientation(Orientation::Portrait)
    .init(&mut delay).await.unwrap();

display.panel().set_brightness(display.bus(), 200).await.unwrap();

// Draw
display.write_pixels(
    Area::from_origin(100, 100),
    FrameControl::new_first(),
    partial_buffer,
);
```

--------------------------------

### Initialize GC9A01 Display Driver with Display-Driver Crate (Rust)

Source: https://github.com/decaday/display-driver/blob/master/panels/gc9a01/README.md

Demonstrates how to initialize the GC9A01 display driver using the `display-driver` crate. It involves configuring reset options, creating a panel instance with a generic specification, and then binding the bus and panel to the `DisplayDriver`.

```rust
use display_driver::{ColorFormat, DisplayDriver, Orientation, LCDResetOption};
// The `Spec` (Generic240x240Type1) defines the hardware-specific constants (Gamma, Voltage).
use display_driver_gc9a01::{Gc9a01, spec::{Generic240x240Type1}};

// 1. Configure Reset
let reset_opt = LCDResetOption::new_pin(reset_pin);

// 2. Create the Panel instance using a Generic Spec
let panel = Gc9a01::<Generic240x240Type1, _, _>::new(reset_opt);

// 3. Bind Bus and Panel, Configure, and Initialize
// The driver orchestrates the logic, delegating transport to 'bus' and commands to 'panel'.
let mut display = DisplayDriver::builder(bus, panel)
    .with_color_format(ColorFormat::RGB565)
    // This framework automatically handles offsets.
    .with_orientation(Orientation::Deg0)
    .init(&mut delay).await.unwrap();

// Now you can use `display` to draw:
display.write_frame(fb).await.unwrap();

```

--------------------------------

### Initialize SpiDisplayBus in Rust

Source: https://github.com/decaday/display-driver/blob/master/buses/spi/README.md

Demonstrates the initialization of the SpiDisplayBus for SPI displays requiring a Data/Command (DC) pin. It requires an implementation of `embedded_hal::spi::SpiDevice` and `embedded_hal::digital::OutputPin` for the SPI communication and DC pin control, respectively.

```rust
use display_driver_spi::SpiDisplayBus;
use embedded_hal::digital::OutputPin;
use embedded_hal_async::spi::SpiDevice;

// let spi = ...; // implement SpiDevice
// let dc = ...;  // implement OutputPin

let bus = SpiDisplayBus::new(spi, dc);
```

--------------------------------

### Initialize ST7735 TFT Display Driver

Source: https://context7.com/decaday/display-driver/llms.txt

Demonstrates the initialization and frame buffer writing for the ST7735 controller. It supports various generic screen configurations and requires an SPI bus and reset pin.

```rust
use display_driver::{ColorFormat, DisplayDriver, Orientation, LCDResetOption};
use display_driver_st7735::{St7735, spec::generic::*};
use display_driver_spi::SpiDisplayBus;

let panel = St7735::<Generic128x128Type1, _, _>::new(LCDResetOption::new_pin(rst));

let mut display = DisplayDriver::builder(bus, panel)
    .with_color_format(ColorFormat::RGB565)
    .with_orientation(Orientation::Deg0)
    .init(&mut delay)
    .await
    .unwrap();

let mut framebuffer = [0u8; 128 * 128 * 2];
display.write_frame(&framebuffer).await.unwrap();
```

--------------------------------

### Initialize ST7789 Display Driver with display-driver Crate (Rust)

Source: https://github.com/decaday/display-driver/blob/master/panels/st7789/README.md

Demonstrates how to initialize the ST7789 display driver using the `display-driver` crate. It involves configuring reset options, creating a `St7789` panel instance with a specific `Spec`, and then binding it to `DisplayDriver` with color format and orientation settings.

```rust
use display_driver::{ColorFormat, DisplayDriver, Orientation, LCDResetOption};
// The `Spec` (Generic240x240Type1) defines the hardware-specific constants (Gamma, Voltage).
use display_driver_st7789::{St7789, spec::generic::Generic240x240Type1};

// 1. Configure Reset
let reset_opt = LCDResetOption::new_pin(reset_pin);

// 2. Create the Panel instance using a Spec
let panel = St7789::<Generic240x240Type1, _, _>::new(reset_opt);

// 3. Bind Bus and Panel, Configure, and Initialize
let mut display = DisplayDriver::builder(bus, panel)
    .with_color_format(ColorFormat::RGB565)
    .with_orientation(Orientation::Portrait)
    .init(&mut delay).await.unwrap();

// Now you can use `display` to draw:
display.write_frame(fb).await.unwrap();

```

--------------------------------

### Implement Custom Panel Specification

Source: https://github.com/decaday/display-driver/blob/master/panels/co5300/README.md

Shows how to support a new AMOLED panel by implementing the PanelSpec and Co5300Spec traits. This allows defining custom resolutions, offsets, and initialization parameters required for specific hardware.

```rust
use display_driver_co5300::{Co5300Spec, PanelSpec};

pub struct MyNewPanel;

impl PanelSpec for MyNewPanel {
    const PHYSICAL_WIDTH: u16 = 454;
    const PHYSICAL_HEIGHT: u16 = 454;
    const PHYSICAL_X_OFFSET: u16 = 0;
    const PHYSICAL_Y_OFFSET: u16 = 0;
}

impl Co5300Spec for MyNewPanel {
    const INIT_PAGE_PARAM: u8 = 0x00;
    const IGNORE_ID_CHECK: bool = true;
}
```

--------------------------------

### Initialize CO5300 AMOLED Display Driver

Source: https://context7.com/decaday/display-driver/llms.txt

Configures the CO5300 AMOLED controller. Note that this driver enforces 2-pixel coordinate alignment for proper rendering.

```rust
use display_driver::{ColorFormat, DisplayDriver, Orientation, LCDResetOption};
use display_driver_co5300::{Co5300, spec::generic::Generic466x466Type1};
use display_driver_spi::SpiDisplayBus;

let panel = Co5300::<Generic466x466Type1, _, _>::new(LCDResetOption::new_pin(rst));

let mut display = DisplayDriver::builder(bus, panel)
    .with_color_format(ColorFormat::RGB565)
    .init(&mut delay)
    .await
    .unwrap();

display.set_brightness(128).await.unwrap();
```

--------------------------------

### Configure SPI Bus with SpiDisplayBus in Rust

Source: https://context7.com/decaday/display-driver/llms.txt

This Rust code configures an SPI peripheral for a display, setting frequency and creating an SPI device with chip select. It then initializes SpiDisplayBus, which uses a DC pin for command/data distinction, preparing it for a display driver.

```rust
use display_driver_spi::SpiDisplayBus;
use embassy_stm32::gpio::{Level, Output, Speed};
use embassy_stm32::spi::{self, Spi};
use embassy_stm32::time::Hertz;

// Configure SPI peripheral
let mut spi_config: spi::Config = Default::default();
spi_config.frequency = Hertz(10_000_000); // 10 MHz

// Create SPI instance (TX only for write-only displays)
let spi = Spi::new_txonly(
    p.SPI4,      // SPI peripheral
    p.PE12,      // SCK pin
    p.PE14,      // MOSI pin
    p.DMA1_CH0,  // DMA channel
    spi_config
);

// Configure GPIO pins
let dc = Output::new(p.PE13, Level::Low, Speed::High);   // Data/Command pin
let cs = Output::new(p.PE9, Level::High, Speed::High);   // Chip Select pin

// Create SPI device with chip select
let spi_device = embedded_hal_bus::spi::ExclusiveDevice::new_no_delay(spi, cs).unwrap();

// Create the display bus
let bus = SpiDisplayBus::new(spi_device, dc);

// The bus is now ready to be used with a DisplayDriver

```

--------------------------------

### Initialize ST7789 Display Driver in Rust

Source: https://context7.com/decaday/display-driver/llms.txt

This Rust code initializes the ST7789 display controller driver, supporting various panel sizes via the `Spec` trait. It demonstrates creating the driver with a reset option, configuring color format and orientation, and performing basic operations like setting brightness and invert mode.

```rust
use display_driver::{ColorFormat, DisplayDriver, Orientation, LCDResetOption};
use display_driver_st7789::{St7789, spec::generic::*};
use display_driver_spi::SpiDisplayBus;

// Available generic specs for ST7789:
// - Generic240x320Type1: 240x320, offset=(0,0), inverted, RGB
// - Generic240x240Type1: 240x240, offset=(0,0)/(0,80), inverted, RGB
// - Generic135x240Type1: 135x240, offset=(52,40)/(53,40), inverted, RGB
// - Generic240x280Type1: 240x280 (1.69"), offset=(0,20), inverted, RGB
// - Generic172x320Type1: 172x320 (1.47"), offset=(34,0), inverted, RGB
// - Generic170x320Type1: 170x320, offset=(35,0), inverted, RGB

// Create ST7789 driver with 135x240 specification
let panel = St7789::<Generic135x240Type1, _, _>::new(LCDResetOption::new_pin(rst));

// Initialize with display driver
let mut display = DisplayDriver::builder(bus, panel)
    .with_color_format(ColorFormat::RGB565)
    .with_orientation(Orientation::Deg0)
    .init(&mut delay)
    .await
    .unwrap();

// Set display brightness (0-255, if supported)
display.set_brightness(200).await.unwrap();

// Access panel directly for advanced features
display.panel.set_invert_mode(&mut display.bus, true).await.unwrap();
display.panel.set_bgr_order(&mut display.bus, true).await.unwrap();

```

--------------------------------

### Initialize GC9A01 Round Display Driver

Source: https://context7.com/decaday/display-driver/llms.txt

Initializes the GC9A01 controller for circular displays. Includes brightness control and frame buffer management for 240x240 resolution.

```rust
use display_driver::{ColorFormat, DisplayDriver, Orientation, LCDResetOption};
use display_driver_gc9a01::{Gc9a01, spec::generic::Generic240x240Type1};
use display_driver_spi::SpiDisplayBus;

let panel = Gc9a01::<Generic240x240Type1, _, _>::new(LCDResetOption::new_pin(rst));

let mut display = DisplayDriver::builder(bus, panel)
    .with_color_format(ColorFormat::RGB565)
    .with_orientation(Orientation::Deg0)
    .init(&mut delay)
    .await
    .unwrap();

display.set_brightness(255).await.unwrap();
let mut framebuffer = [0u8; 240 * 240 * 2];
display.write_frame(&framebuffer).await.unwrap();
```

--------------------------------

### Configure Custom Display Panels with PanelSpec

Source: https://context7.com/decaday/display-driver/llms.txt

Implement the PanelSpec trait to define hardware-specific parameters such as dimensions, offsets, and inversion modes. This allows the driver to support custom display panels.

```rust
use display_driver_mipidcs::PanelSpec;
use display_driver_st7789::St7789Spec;

// Define a custom spec for a specific ST7789 panel
pub struct MyCustomST7789Panel;

impl PanelSpec for MyCustomST7789Panel {
    const PHYSICAL_WIDTH: u16 = 240;
    const PHYSICAL_HEIGHT: u16 = 280;
    const PHYSICAL_X_OFFSET: u16 = 0;
    const PHYSICAL_Y_OFFSET: u16 = 20;
    const PHYSICAL_X_OFFSET_ROTATED: u16 = 0;
    const PHYSICAL_Y_OFFSET_ROTATED: u16 = 20;
    const INVERT_TRANSPOSED_OFFSET: bool = false;
    const INVERTED: bool = true;
    const BGR: bool = false;
}

// Implement St7789Spec with tuning parameters
impl St7789Spec for MyCustomST7789Panel {
    const PORCTRL_PARAMS: [u8; 5] = [0x0C, 0x0C, 0x00, 0x33, 0x33];
    const GCTRL_PARAM: u8 = 0x35;
    const VCOMS_PARAM: u8 = 0x19;
    const LCMCTRL_PARAM: u8 = 0x2C;
    const VRHS_PARAM: u8 = 0x12;
    const VDVS_PARAM: u8 = 0x20;
    const FRCTRL2_PARAM: u8 = 0x0F;
    const PWCTRL1_PARAMS: [u8; 2] = [0xA4, 0xA1];
    const PVGAMCTRL_PARAMS: [u8; 14] = [
        0xD0, 0x04, 0x0D, 0x11, 0x13, 0x2B, 0x3F, 0x54,
        0x4C, 0x18, 0x0D, 0x0B, 0x1F, 0x23
    ];
    const NVGAMCTRL_PARAMS: [u8; 14] = [
        0xD0, 0x04, 0x0C, 0x11, 0x13, 0x2C, 0x3F, 0x44,
        0x51, 0x2F, 0x1F, 0x1F, 0x20, 0x23
    ];
}

// Use custom spec with driver
let panel = St7789::<MyCustomST7789Panel, _, _>::new(reset_opt);
```

--------------------------------

### Manage Display Orientation

Source: https://context7.com/decaday/display-driver/llms.txt

Handles screen rotation and coordinate system transposition. The framework automatically adjusts offsets based on the selected orientation.

```rust
use display_driver::Orientation;

let landscape = Orientation::Deg90;
let transposed = landscape.is_transposed();

display.set_orientation(Orientation::Deg90).await.unwrap();
```

--------------------------------

### Execute Solid Color Fill Operations

Source: https://context7.com/decaday/display-driver/llms.txt

Perform efficient screen filling using either hardware-accelerated bus commands or software-based batching. Supports conversion from embedded-graphics color types.

```rust
use display_driver::{Area, SolidColor, ColorFormat};
use embedded_graphics_core::pixelcolor::{Rgb565, Rgb888};

// Create solid colors from embedded-graphics colors
let red: SolidColor = Rgb565::RED.into();
let blue: SolidColor = Rgb565::BLUE.into();
let white: SolidColor = Rgb888::WHITE.into();

// Fill using hardware acceleration (if bus supports BusHardwareFill)
let area = Area::new(0, 0, 100, 100);
display.fill_solid_via_bus(red, area).await.unwrap();

// Fill entire screen via hardware
display.fill_screen_via_bus(blue).await.unwrap();

// Software batch fill (works with any bus supporting BusBytesIo)
// The const generic N specifies the buffer size for batching
display.fill_solid_batch::<1024>(white, area).await.unwrap();
display.fill_screen_batch::<2048>(blue).await.unwrap();
```

--------------------------------

### Configure Address Mode (MADCTL) in Rust

Source: https://context7.com/decaday/display-driver/llms.txt

Shows how to manage display orientation, mirroring, and color order using the AddressMode bitflags. Developers can construct modes from orientations or manual bit manipulation to control hardware-level memory access.

```rust
use display_driver_mipidcs::dcs_types::AddressMode;
use display_driver::Orientation;

let mode = AddressMode::from_orientation(Orientation::Deg90);
let custom_mode = AddressMode::MV | AddressMode::MX | AddressMode::BGR;

let mode = AddressMode::new_simple(true, false, true, true);

let mut mode = AddressMode::empty();
mode.set(AddressMode::BGR, true);
mode.set_orientation(Orientation::Deg180);

display.panel.set_address_mode(
    &mut display.bus,
    mode,
    Some(Orientation::Deg90)
).await.unwrap();
```

--------------------------------

### Configure Color Formats

Source: https://context7.com/decaday/display-driver/llms.txt

Defines pixel color formats ranging from 1-bit binary to 24-bit RGB. Provides helper methods to retrieve bit/byte depth and update display settings.

```rust
use display_driver::ColorFormat;

let rgb565 = ColorFormat::RGB565;
let bits = rgb565.size_bits();
let bytes = rgb565.size_bytes();

display.set_color_format(ColorFormat::RGB565).await.unwrap();
```

--------------------------------

### Implement SimpleDisplayBus for SPI/I2C

Source: https://context7.com/decaday/display-driver/llms.txt

Implement the `SimpleDisplayBus` trait for straightforward serial buses like SPI or I2C. This provides an automatic implementation for the more general `DisplayBus` trait. Requires defining an error type and implementing `write_cmds` and `write_data` methods.

```rust
use display_driver::bus::{DisplayBus, SimpleDisplayBus, ErrorType, Metadata, FrameControl};
use display_driver::{Area, DisplayError, SolidColor};

// Simple approach: Implement SimpleDisplayBus for automatic DisplayBus impl
struct MySimpleBus {
    // Your hardware resources
}

impl ErrorType for MySimpleBus {
    type Error = MyBusError;
}

impl SimpleDisplayBus for MySimpleBus {
    async fn write_cmds(&mut self, cmds: &[u8]) -> Result<(), Self::Error> {
        // Set DC low, send command bytes
        Ok(())
    }

    async fn write_data(&mut self, data: &[u8]) -> Result<(), Self::Error> {
        // Set DC high, send data bytes
        Ok(())
    }

    // Optional: override for atomic command+params
    async fn write_cmd_with_params(
        &mut self,
        cmd: &[u8],
        params: &[u8]
    ) -> Result<(), Self::Error> {
        self.write_cmds(cmd).await?;
        self.write_data(params).await
    }
}
```

--------------------------------

### Manage Frame Synchronization and Metadata

Source: https://context7.com/decaday/display-driver/llms.txt

Use FrameControl and Metadata to coordinate multi-part frame transfers and VSYNC synchronization. This ensures data integrity during partial screen updates.

```rust
use display_driver::{Area, FrameControl, Metadata};

// FrameControl marks frame boundaries for VSYNC/TE synchronization
let standalone = FrameControl::new_standalone(); // Single complete frame
let first = FrameControl::new_first();           // Start of multi-part frame
let last = FrameControl::new_last();             // End of multi-part frame

// Metadata carries transfer context
let full_screen = Metadata::new_full_screen(240, 320);
let continue_stream = Metadata::new_continue_stream();

let custom = Metadata::new_from_parts(
    Some(Area::new(10, 10, 100, 100)),
    FrameControl::new_standalone()
);

// Used internally by write_pixels
let area = Area::new(0, 0, 240, 160);
display.write_pixels(area, FrameControl::new_first(), &buffer_part1).await.unwrap();
display.write_pixels(area, FrameControl::new_last(), &buffer_part2).await.unwrap();
```

--------------------------------

### Implement Custom GC9A01 Panel Specification (Rust)

Source: https://github.com/decaday/display-driver/blob/master/panels/gc9a01/README.md

Shows how to define a custom panel specification for the GC9A01 driver by implementing the `PanelSpec` and `Gc9a01Spec` traits. This allows for custom resolution, offsets, and color order configurations.

```rust
use display_driver_gc9a01::{PanelSpec, Gc9a01Spec};

// 1. Define your type
pub struct MyCustomPanel;

// 2. Configure Resolution & Offsets
impl PanelSpec for MyCustomPanel {
    const PHYSICAL_WIDTH: u16 = 240;
    const PHYSICAL_HEIGHT: u16 = 240;

    // Panel Offset
    const PHYSICAL_X_OFFSET: u16 = 0;
    const PHYSICAL_Y_OFFSET: u16 = 0;

    // Set true if Red and Blue are swapped (BGR Order)
    const BGR: bool = true; 

    // For other optional settings, please refer to the code comments.
}

// 3. Implement Gc9a01Spec marker trait
impl Gc9a01Spec for MyCustomPanel {}

```

--------------------------------

### Configure LCD Reset Options with LCDResetOption in Rust

Source: https://context7.com/decaday/display-driver/llms.txt

This Rust code demonstrates various ways to configure LCD reset behavior using the LCDResetOption enum. It covers GPIO pins (active high/low), software reset commands, bus-based resets, and disabling reset entirely.

```rust
use display_driver::panel::reset::{LCDResetOption, NoResetPin};
use embassy_stm32::gpio::{Level, Output, Speed};

// Option 1: Reset via GPIO pin (active low - most common)
let rst_pin = Output::new(p.PE15, Level::High, Speed::High);
let reset_opt = LCDResetOption::new_pin(rst_pin);

// Option 2: Reset via GPIO pin with explicit active level
let rst_pin = Output::new(p.PE15, Level::Low, Speed::High);
let reset_opt = LCDResetOption::new_pin_with_level(rst_pin, true); // Active high

// Option 3: Software reset via command (0x01)
let reset_opt: LCDResetOption<NoResetPin> = LCDResetOption::new_software();

// Option 4: Reset via the bus interface (if hardware supports it)
let reset_opt: LCDResetOption<NoResetPin> = LCDResetOption::new_bus();

// Option 5: No reset (display already initialized or no reset pin available)
let reset_opt: LCDResetOption<NoResetPin> = LCDResetOption::none();

// Use with panel driver
let panel = St7789::<Generic240x320Type1, _, _>::new(reset_opt);

// Release the pin later if needed
let released_pin = reset_opt.release(); // Returns Option<P>

```

--------------------------------

### Integrate Embedded Graphics with Framebuffers in Rust

Source: https://context7.com/decaday/display-driver/llms.txt

Illustrates how to use the embedded-graphics crate to draw shapes and text onto a framebuffer. The resulting buffer is then transmitted to the display driver for efficient rendering.

```rust
use embedded_graphics::framebuffer::{buffer_size, Framebuffer};
use embedded_graphics::pixelcolor::{raw::{BigEndian, RawU16}, Rgb565};
use embedded_graphics::prelude::*;

let mut fb = Framebuffer::<Rgb565, RawU16, BigEndian, 128, 128, { buffer_size::<Rgb565>(128, 128) }>::new();

fb.clear(Rgb565::BLACK).unwrap();

Circle::new(Point::new(60, 60), 40)
    .into_styled(PrimitiveStyle::with_fill(Rgb565::RED))
    .draw(&mut fb)
    .unwrap();

display.write_frame(fb.data()).await.unwrap();
```

--------------------------------

### Implement Custom ST7789 Display Spec (Rust)

Source: https://github.com/decaday/display-driver/blob/master/panels/st7789/README.md

Shows how to define a custom `Spec` for the ST7789 display driver when built-in options are insufficient. This involves implementing `PanelSpec` to define resolution and offsets, and then using `impl_st7789_generic!` or manually implementing `St7789Spec` for initialization parameters.

```rust
use display_driver_st7789::{PanelSpec, St7789Spec, impl_st7789_generic};

// 1. Define your type
pub struct MyCustomPanel;

// 2. Configure Resolution & Offsets
impl PanelSpec for MyCustomPanel {
    const PHYSICAL_WIDTH: u16 = 240;
    const PHYSICAL_HEIGHT: u16 = 240;

    const PHYSICAL_X_OFFSET: u16 = 0;
    const PHYSICAL_Y_OFFSET: u16 = 0;
    
    // Optional: Offset when rotated 90/270 degrees
    const PHYSICAL_X_OFFSET_ROTATED: u16 = 0;
    const PHYSICAL_Y_OFFSET_ROTATED: u16 = 80;

    const INVERTED: bool = true; // IPS panels usually need this
    const BGR: bool = false;
}

// 3. Implement St7789Spec
// Option A: Use default generic initialization parameters
impl_st7789_generic!(MyCustomPanel);

// Option B: Manual implementation for fine-tuning
// impl St7789Spec for MyCustomPanel {
//     const PORCTRL_PARAMS: [u8; 5] = ...;
//     ...
// }

```

--------------------------------

### Implement DisplayBus for Complex Buses

Source: https://context7.com/decaday/display-driver/llms.txt

Implement the `DisplayBus` trait directly for complex or custom hardware interfaces. This allows for more control over transactions, including atomic command-parameter writes and optimized pixel transfers using metadata for frame control and ROI.

```rust
// Advanced approach: Implement DisplayBus directly for complex buses
impl DisplayBus for MyAdvancedBus {
    async fn write_cmd(&mut self, cmd: &[u8]) -> Result<(), Self::Error> {
        // Send command
        Ok(())
    }

    async fn write_cmd_with_params(
        &mut self,
        cmd: &[u8],
        params: &[u8]
    ) -> Result<(), Self::Error> {
        // Atomic command + params transaction
        Ok(())
    }

    async fn write_pixels(
        &mut self,
        cmd: &[u8],
        data: &[u8],
        metadata: Metadata,
    ) -> Result<(), DisplayError<Self::Error>> {
        // Handle frame sync using metadata.frame_control
        // Use metadata.area for ROI-aware transfers
        // Leverage DMA or hardware acceleration
        Ok(())
    }
}
```

--------------------------------

### Define Rectangular Regions with Area

Source: https://context7.com/decaday/display-driver/llms.txt

The Area struct manages rectangular regions for partial display updates. It supports creation from coordinates, origins, or tuples and integrates with embedded-graphics primitives.

```rust
use display_driver::Area;

// Create an area at position (10, 20) with size 100x50
let area = Area::new(10, 20, 100, 50);

// Create an area from origin (0, 0)
let fullscreen = Area::from_origin(240, 320);

// Create from a size tuple
let area_from_tuple = Area::from_origin_size((128, 128));

// Access area properties
let (x, y) = area.position();           // (10, 20)
let (x1, y1) = area.bottom_right();     // (109, 69)
let total = area.total_pixels();        // 5000

// Use with embedded-graphics Rectangle (when feature enabled)
use embedded_graphics_core::primitives::Rectangle;
let rect: Rectangle = area.into();
let area_from_rect: Area = rect.into();
```

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