Class Epd4in2bV2

Represents an WaveShare Epd4in2b V2 ePaper color display 400x300, 4.2inch e-Ink three-color display, SPI interface

Assembly: ePaperWaveShare.dll

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Declaration

public class Epd4in2bV2 : EPaperTriColorBase, ISpiPeripheral, IDisposable, IPixelDisplay, IDisplay

Inheritance: System.Object -> Meadow.Foundation.Displays.EPaperBase

Implements:
Meadow.Hardware.ISpiPeripheral, System.IDisposable, Meadow.Peripherals.Displays.IPixelDisplay, Meadow.Peripherals.Displays.IDisplay

Properties

IsBlackInverted

Does the display invert data for black pixels

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Declaration

protected override bool IsBlackInverted { get; }

IsColorInverted

Does the display invert data for color pixels

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Declaration

protected override bool IsColorInverted { get; }

Methods

Initialize()

Initialize the display

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Declaration

protected override void Initialize()

Reset()

Reset the display

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Declaration

protected override void Reset()

SetPartialWindow(byte[], byte[], int, int, int, int)

Set partial window for display updates

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Declaration

protected void SetPartialWindow(byte[] bufferBlack, byte[] bufferColor, int x, int y, int width, int height)

Parameters

Type	Name	Description
System.Byte[]	bufferBlack	The buffer with black pixel data
System.Byte[]	bufferColor	The buffer with color pixel data
System.Int32	x	The x start position in pixels
System.Int32	y	The y start position in pixels
System.Int32	width	The width to update in pixels
System.Int32	height	The height to update in pixels

SetPartialWindowBlack(byte[], int, int, int, int)

Set partial window for display updates

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Declaration

protected void SetPartialWindowBlack(byte[] bufferBlack, int x, int y, int width, int height)

Parameters

Type	Name	Description
System.Byte[]	bufferBlack	The buffer with black pixel data
System.Int32	x	The x start position in pixels
System.Int32	y	The y start position in pixels
System.Int32	width	The width to update in pixels
System.Int32	height	The height to update in pixels

SetPartialWindowColor(byte[], int, int, int, int)

Set partial window for display updates

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Declaration

protected void SetPartialWindowColor(byte[] bufferColor, int x, int y, int width, int height)

Parameters

Type	Name	Description
System.Byte[]	bufferColor	The buffer with color pixel data
System.Int32	x	The x start position in pixels
System.Int32	y	The y start position in pixels
System.Int32	width	The width to update in pixels
System.Int32	height	The height to update in pixels

Show(int, int, int, int)

Copy the display buffer to the display for a set region

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Declaration

public override void Show(int left, int top, int right, int bottom)

Parameters

Type	Name	Description
System.Int32	left	left bounds of region in pixels
System.Int32	top	top bounds of region in pixels
System.Int32	right	right bounds of region in pixels
System.Int32	bottom	bottom bounds of region in pixels

Show()

Copy the display buffer to the display

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Declaration

public override void Show()

ClearFrame()

Clear the frame data from the SRAM, this doesn't update the display

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Declaration

protected virtual void ClearFrame()

DisplayFrame()

Send a refresh command to the display Does not transfer new data

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Declaration

public void DisplayFrame()

Sleep()

Set the device to low power mode

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Declaration

protected virtual void Sleep()

Implements

• Meadow.Hardware.ISpiPeripheral
• System.IDisposable
• Meadow.Peripherals.Displays.IPixelDisplay
• Meadow.Peripherals.Displays.IDisplay