Meadow.Foundation.Displays.Il91874V03

Il91874V03
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

The IL91874V3 is a tri-color display controller for ePaper displays. Data is sent to the controller via SPI and supports partial screen updates.

The IL91874V3 is paired with a wide range of three color ePaper display sizes and resolutions.

Sample projects available on GitHub

Code Example

MicroGraphics graphics;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize ...");

    var display = new Il91874V03(
        spiBus: Device.CreateSpiBus(),
        chipSelectPin: Device.Pins.D02,
        dcPin: Device.Pins.D01,
        resetPin: Device.Pins.D00,
        busyPin: Device.Pins.D03,
        width: 176,
        height: 264);

    graphics = new MicroGraphics(display);

    return base.Initialize();
}

public override Task Run()
{
    graphics.DrawRectangle(1, 1, 126, 32, Color.Red, false);

    graphics.CurrentFont = new Font8x12();
    graphics.DrawText(2, 2, "IL91874V03", Color.Black);
    graphics.DrawText(2, 20, "Meadow F7", Color.Black);

    graphics.Show();

    return Task.CompletedTask;
}

Sample project(s) available on GitHub

Wiring Example

To control a IL91874V3 from Meadow, connect the following:

Il91874V03	Meadow Pin
BUSY	D15
RST	D14
DC	D13
CS	D12
CLK	SCK
DIN	MOSI
GND	GND
3V3	3V3

If your display does not include any of the above pins, they can be omitted. Pass NULL into the constructor for the missing pin(s).

Class Il91874V03

Represents the older v0.3 Il91874V03 ePaper color displays 264x176, 2.7inch tri color e-Ink display / SPI interface

Assembly: EPaper.dll

View Source

Declaration

public class Il91874V03 : EPaperMonoBase, 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

Methods

Initialize()

Initialize the display

View Source

Declaration

protected override void Initialize()

SetFrameMemory(byte[])

Set frame buffer memory of display (full screen)

View Source

Declaration

public override void SetFrameMemory(byte[] buffer)

Parameters

Type	Name	Description
System.Byte[]	buffer	The image buffer

SetFrameMemory(byte[], int, int, int, int)

Set frame buffer memory of display

View Source

Declaration

public override void SetFrameMemory(byte[] buffer, int x, int y, int width, int height)

Parameters

Type	Name	Description
System.Byte[]	buffer	buffer
System.Int32	x	x location
System.Int32	y	y location
System.Int32	width	width in pixels
System.Int32	height	height in pixels

DisplayFrame()

Display data from the display controller SRAM

View Source

Declaration

public override void DisplayFrame()

ClearFrame()

Clears the SRAM on the display controller Doesn't update the display

View Source

Declaration

public void ClearFrame()

Implements

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