Remarks

Epd4in2bV2
Status
Source code	GitHub
NuGet package

Characteristic	Locus
Inheritance	System.Object EPaperBase EPaperTriColorBase > Epd4in2bV2
Implements	IGraphicsDisplay
Inherited Members	EPaperTriColorBase.EnabledColor EPaperTriColorBase.DisabledColor EPaperTriColorBase.ColorMode EPaperTriColorBase.SupportedColorModes EPaperTriColorBase.imageBuffer EPaperTriColorBase.Width EPaperTriColorBase.Height EPaperTriColorBase.PixelBuffer EPaperTriColorBase.CreateBuffer(Int32, Int32) EPaperTriColorBase.Clear(Boolean) EPaperTriColorBase.Fill(Color, Boolean) EPaperTriColorBase.Fill(Int32, Int32, Int32, Int32, Color) EPaperTriColorBase.Clear(Boolean, Boolean) EPaperTriColorBase.DrawPixel(Int32, Int32, Boolean) EPaperTriColorBase.DrawBlackPixel(Int32, Int32, Boolean) EPaperTriColorBase.InvertPixel(Int32, Int32) EPaperTriColorBase.DrawColoredPixel(Int32, Int32, Boolean) EPaperTriColorBase.DrawPixel(Int32, Int32, Color) EPaperTriColorBase.WriteBuffer(Int32, Int32, IPixelBuffer) EPaperTriColorBase.SendCommand(EPaperTriColorBase.Command) EPaperBase.commandBuffer EPaperBase.dataCommandPort EPaperBase.resetPort EPaperBase.chipSelectPort EPaperBase.busyPort EPaperBase.spiPeripheral EPaperBase.DataState EPaperBase.CommandState EPaperBase.Write(Byte) EPaperBase.DelayMs(Int32) EPaperBase.SendCommand(Byte) EPaperBase.SendData(Int32) EPaperBase.SendData(Byte) EPaperBase.SendData(Byte[]) EPaperBase.WaitUntilIdle()
Namespace	Meadow.Foundation.Displays
Assembly	ePaperWaveShare.dll

Syntax

public class Epd4in2bV2 : EPaperTriColorBase, IGraphicsDisplay

Constructors

Epd4in2bV2(ISpiBus, IDigitalOutputPort, IDigitalOutputPort, IDigitalOutputPort, IDigitalInputPort)

Create a new WaveShare Epd4in2b V2 ePaper 400x300 pixel display object

Declaration

public Epd4in2bV2(ISpiBus spiBus, IDigitalOutputPort chipSelectPort, IDigitalOutputPort dataCommandPort, IDigitalOutputPort resetPort, IDigitalInputPort busyPort)

Parameters

Type	Name	Description
ISpiBus	spiBus	SPI bus connected to display
IDigitalOutputPort	chipSelectPort	Chip select output port
IDigitalOutputPort	dataCommandPort	Data command output port
IDigitalOutputPort	resetPort	Reset output port
IDigitalInputPort	busyPort	Busy input port

Epd4in2bV2(ISpiBus, IPin, IPin, IPin, IPin)

Create a new WaveShare Epd4in2b V2 400x300 pixel display object

Declaration

public Epd4in2bV2(ISpiBus spiBus, IPin chipSelectPin, IPin dcPin, IPin resetPin, IPin busyPin)

Parameters

Type	Name	Description
ISpiBus	spiBus	SPI bus connected to display
IPin	chipSelectPin	Chip select pin
IPin	dcPin	Data command pin
IPin	resetPin	Reset pin
IPin	busyPin	Busy pin

Properties

IsBlackInverted

Does the display invert data for black pixels

Declaration

protected override bool IsBlackInverted { get; }

Property Value

Type	Description
System.Boolean

Overrides

EPaperTriColorBase.IsBlackInverted

IsColorInverted

Does the display invert data for color pixels

Declaration

protected override bool IsColorInverted { get; }

Property Value

Type	Description
System.Boolean

Overrides

EPaperTriColorBase.IsColorInverted

Methods

ClearFrame()

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

Declaration

protected virtual void ClearFrame()

DisplayFrame()

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

Declaration

public void DisplayFrame()

Initialize()

Initalize the display

Declaration

protected override void Initialize()

Overrides

EPaperTriColorBase.Initialize()

Reset()

Reset the display

Declaration

protected override void Reset()

Overrides

EPaperBase.Reset()

SetPartialWindow(Byte[], Byte[], Int32, Int32, Int32, Int32)

Set partial window for display updates

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 stary position in pixels
System.Int32	width	The width to update in pixels
System.Int32	height	The height to update in pixels

SetPartialWindowBlack(Byte[], Int32, Int32, Int32, Int32)

Set partial window for display updates

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 stary position in pixels
System.Int32	width	The width to update in pixels
System.Int32	height	The height to update in pixels

SetPartialWindowColor(Byte[], Int32, Int32, Int32, Int32)

Set partial window for display updates

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 stary position in pixels
System.Int32	width	The width to update in pixels
System.Int32	height	The height to update in pixels

Show()

Copy the display buffer to the display

Declaration

public override void Show()

Overrides

EPaperTriColorBase.Show()

Show(Int32, Int32, Int32, Int32)

Copy the display buffer to the display for a set region

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

Overrides

EPaperTriColorBase.Show(Int32, Int32, Int32, Int32)

Sleep()

Set the device to low power mode

Declaration

protected virtual void Sleep()