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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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public class Epd4in2bV2 : EPaperTriColorBase, ISpiPeripheral, IDisposable, IGraphicsDisplay

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

Implements:
Meadow.Hardware.ISpiPeripheral, System.IDisposable, Meadow.Foundation.Graphics.IGraphicsDisplay

Properties

IsBlackInverted

Does the display invert data for black pixels

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protected override bool IsBlackInverted { get; }

IsColorInverted

Does the display invert data for color pixels

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protected override bool IsColorInverted { get; }

Methods

Initialize()

Initialize the display

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protected override void Initialize()

Reset()

Reset the display

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protected override void Reset()

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

Set partial window for display updates

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protected void SetPartialWindow(byte[] bufferBlack, byte[] bufferColor, int x, int y, int width, int height)
Parameters
TypeNameDescription
System.Byte[]bufferBlackThe buffer with black pixel data
System.Byte[]bufferColorThe buffer with color pixel data
System.Int32xThe x start position in pixels
System.Int32yThe y start position in pixels
System.Int32widthThe width to update in pixels
System.Int32heightThe height to update in pixels

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

Set partial window for display updates

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protected void SetPartialWindowBlack(byte[] bufferBlack, int x, int y, int width, int height)
Parameters
TypeNameDescription
System.Byte[]bufferBlackThe buffer with black pixel data
System.Int32xThe x start position in pixels
System.Int32yThe y start position in pixels
System.Int32widthThe width to update in pixels
System.Int32heightThe height to update in pixels

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

Set partial window for display updates

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protected void SetPartialWindowColor(byte[] bufferColor, int x, int y, int width, int height)
Parameters
TypeNameDescription
System.Byte[]bufferColorThe buffer with color pixel data
System.Int32xThe x start position in pixels
System.Int32yThe y start position in pixels
System.Int32widthThe width to update in pixels
System.Int32heightThe 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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public override void Show(int left, int top, int right, int bottom)
Parameters
TypeNameDescription
System.Int32leftleft bounds of region in pixels
System.Int32toptop bounds of region in pixels
System.Int32rightright bounds of region in pixels
System.Int32bottombottom bounds of region in pixels

Show()

Copy the display buffer to the display

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public override void Show()

ClearFrame()

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

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protected virtual void ClearFrame()

DisplayFrame()

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

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public void DisplayFrame()

Sleep()

Set the device to low power mode

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protected virtual void Sleep()

Implements