Meadow.Foundation.Displays.Ili9341

Ili9341
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

The ILI9341 is a display controller used to drive color displays over SPI using 12, 16 or 18 bbp. These displays require a backlight. These displays are commonly found with a resolution of 320x240.

The Meadow.Foundation ILI9341 driver currently only supports 16bpp RGB565.

Code Example

MicroGraphics graphics;
Ili9341 display;

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

    Resolver.Log.Info("Create display driver instance");

    display = new Ili9341
    (
        spiBus: Device.CreateSpiBus(),
        chipSelectPin: Device.Pins.D13,
        dcPin: Device.Pins.D14,
        resetPin: Device.Pins.D15,
        width: 240, height: 320
    );

    graphics = new MicroGraphics(display)
    {
        IgnoreOutOfBoundsPixels = true,
        CurrentFont = new Font12x16()
    };

    return base.Initialize();
}

public override Task Run()
{
    graphics.Clear();

    graphics.DrawTriangle(10, 30, 50, 50, 10, 50, Color.Red);
    graphics.DrawRectangle(20, 45, 40, 20, Color.Yellow, false);
    graphics.DrawCircle(50, 50, 40, Color.Blue, false);
    graphics.DrawText(5, 5, "Meadow F7", Color.White);

    graphics.Show();

    DisplayTest();

    return base.Run();
}

Sample project(s) available on GitHub

Wiring Example

To wire a ILI9341 to your Meadow board, connect the following:

ILI9341	Meadow Pin
LED-	3V3
LED+	GND
MOSI	MOSI
SCK	SCK
RESET	D15
A0	D14
CS	D13
VCC	3V3
GND	GND

It should look like the following diagram:

Class Ili9341

Represents a Ili9341 TFT color display

Assembly: TftSpi.dll

View Source

Declaration

public class Ili9341 : TftSpiBase, IPixelDisplay, IDisplay, ISpiPeripheral, IDisposable, IRotatableDisplay

Inheritance: System.Object -> Meadow.Foundation.Displays.TftSpiBase

Implements:
Meadow.Peripherals.Displays.IPixelDisplay, Meadow.Peripherals.Displays.IDisplay, Meadow.Hardware.ISpiPeripheral, System.IDisposable, Meadow.Peripherals.Displays.IRotatableDisplay

Properties

DefaultSpiBusSpeed

SPI bus speed

View Source

Declaration

public override Frequency DefaultSpiBusSpeed { get; }

DefaultColorMode

The default display color mode

View Source

Declaration

public override ColorMode DefaultColorMode { get; }

SupportedColorModes

The color modes supported by the display

View Source

Declaration

public override ColorMode SupportedColorModes { get; }

Methods

Initialize()

Initialize the display

View Source

Declaration

protected override void Initialize()

SetRotation(RotationType)

Set the display rotation

View Source

Declaration

public void SetRotation(RotationType rotation)

Parameters

Type	Name	Description
Meadow.Peripherals.Displays.RotationType	rotation	The rotation value

Implements

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