Remarks

Epd4in2
Status
Source code	GitHub
NuGet package

Characteristic	Locus
Inheritance	object EPaperBase EPaperMonoBase > Epd4in2
Implements	ISpiPeripheral IDisposable IGraphicsDisplay
Inherited Members	EPaperMonoBase.imageBuffer EPaperMonoBase.Clear(bool) EPaperMonoBase.Fill(Color, bool) EPaperMonoBase.Fill(int, int, int, int, Color) EPaperMonoBase.Clear(bool, bool) EPaperMonoBase.DrawPixel(int, int, bool) EPaperMonoBase.DrawPixel(int, int, Color) EPaperMonoBase.InvertPixel(int, int) EPaperMonoBase.WriteBuffer(int, int, IPixelBuffer) EPaperMonoBase.SetFrameMemory(byte[], int, int, int, int) EPaperMonoBase.SetFrameMemory(byte[]) EPaperMonoBase.SendCommand(EPaperMonoBase.Command) EPaperMonoBase.ColorMode EPaperMonoBase.SupportedColorModes EPaperMonoBase.PixelBuffer EPaperMonoBase.EnabledColor EPaperMonoBase.DisabledColor EPaperMonoBase.Width EPaperMonoBase.Height EPaperBase.commandBuffer EPaperBase.dataCommandPort EPaperBase.resetPort EPaperBase.chipSelectPort EPaperBase.busyPort EPaperBase.spiComms EPaperBase.DataState EPaperBase.CommandState EPaperBase.createdPorts EPaperBase.Write(byte) EPaperBase.DelayMs(int) EPaperBase.SendCommand(byte) EPaperBase.SendData(int) EPaperBase.SendData(byte) EPaperBase.SendData(byte[]) EPaperBase.WaitUntilIdle() EPaperBase.Dispose() EPaperBase.Dispose(bool) EPaperBase.DefaultSpiBusSpeed EPaperBase.SpiBusSpeed EPaperBase.DefaultSpiBusMode EPaperBase.SpiBusMode EPaperBase.IsDisposed object.Equals(object) object.Equals(object, object) object.GetHashCode() object.GetType() object.MemberwiseClone() object.ReferenceEquals(object, object) object.ToString()
Namespace	Meadow.Foundation.Displays
Assembly	ePaperWaveShare.dll

Syntax

public class Epd4in2 : EPaperMonoBase, ISpiPeripheral, IDisposable, IGraphicsDisplay

Constructors

Epd4in2(ISpiBus, IDigitalOutputPort, IDigitalOutputPort, IDigitalOutputPort, IDigitalInputPort)

Create a new WaveShare Epd4in2 ePaper 400x300 pixel display object

Declaration

public Epd4in2(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

Remarks

Epd4in2
Status
Source code	GitHub
NuGet package

Epd4in2(ISpiBus, IPin, IPin, IPin, IPin)

Create a new WaveShare Epd4in2 400x300 pixel display object

Declaration

public Epd4in2(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

Remarks

Epd4in2
Status
Source code	GitHub
NuGet package

Methods

ClearFrame()

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

Declaration

protected virtual void ClearFrame()

Remarks

Epd4in2
Status
Source code	GitHub
NuGet package

DisplayFrame()

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

Declaration

public override void DisplayFrame()

Overrides

EPaperMonoBase.DisplayFrame()

Remarks

Epd4in2
Status
Source code	GitHub
NuGet package

Initialize()

Initialize the display driver

Declaration

protected override void Initialize()

Overrides

EPaperMonoBase.Initialize()

Remarks

Epd4in2
Status
Source code	GitHub
NuGet package

Reset()

Reset the display

Declaration

protected override void Reset()

Overrides

EPaperBase.Reset()

Remarks

Epd4in2
Status
Source code	GitHub
NuGet package

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

Set partial address window to update display

Declaration

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

Parameters

Type	Name	Description
byte[]	buffer	The internal display buffer
int	x	X start position in pixels
int	y	Y start position in pixels
int	width	Width in pixels
int	height	Height in pixels

Remarks

Epd4in2
Status
Source code	GitHub
NuGet package

Show()

Copy the display buffer to the display

Declaration

public override void Show()

Overrides

EPaperMonoBase.Show()

Remarks

Epd4in2
Status
Source code	GitHub
NuGet package

Show(int, int, int, int)

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
int	left	left bounds of region in pixels
int	top	top bounds of region in pixels
int	right	right bounds of region in pixels
int	bottom	bottom bounds of region in pixels

Overrides

EPaperMonoBase.Show(int, int, int, int)

Remarks

Epd4in2
Status
Source code	GitHub
NuGet package

Sleep()

Set the device to low power mode

Declaration

protected override void Sleep()

Overrides

EPaperMonoBase.Sleep()

Remarks

Epd4in2
Status
Source code	GitHub
NuGet package