Class Epd4in2

Represents an WaveShare Epd4in2 ePaper display 400x300, 4.2inch e-Ink display, SPI interface

Assembly: ePaperWaveShare.dll

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public class Epd4in2 : EPaperMonoBase, ISpiPeripheral, IDisposable, IGraphicsDisplay

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

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

Methods

Initialize()

Initialize the display driver

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protected override void Initialize()

Reset()

Reset the display

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protected override void Reset()

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

Set partial address window to update display

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

Parameters

Type	Name	Description
System.Byte[]	buffer	The internal display buffer
System.Int32	x	X start position in pixels
System.Int32	y	Y start position in pixels
System.Int32	width	Width in pixels
System.Int32	height	Height 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

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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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 override void DisplayFrame()

Sleep()

Set the device to low power mode

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protected override void Sleep()

Implements

• Meadow.Hardware.ISpiPeripheral
• System.IDisposable
• Meadow.Foundation.Graphics.IGraphicsDisplay