Meadow.Foundation.Sensors.Hid.Xpt2046

Xpt2046
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

private Xpt2046 touchScreen;

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

    var i2cBus = Device.CreateI2cBus(I2cBusSpeed.Fast);

    touchScreen = new Xpt2046(
        Device.CreateSpiBus(),
        Device.Pins.D04.CreateDigitalInterruptPort(InterruptMode.EdgeFalling, ResistorMode.InternalPullUp),
        Device.Pins.D05.CreateDigitalOutputPort(true));

    touchScreen.TouchDown += TouchScreen_TouchDown;

    return Task.CompletedTask;
}

private void TouchScreen_TouchDown(ITouchScreen sender, TouchPoint point)
{
    Resolver.Log.Info($"Touch at location: X:{point.ScreenX}, Y:{point.ScreenY}");
}

Sample project(s) available on GitHub

Class Xpt2046

Represents an XPT2046 4-wire touch screen controller

Assembly: Xpt2046.dll

View Source

Declaration

public class Xpt2046 : ICalibratableTouchscreen, ITouchScreen

Implements:
Meadow.Hardware.ICalibratableTouchscreen, Meadow.Hardware.ITouchScreen

Properties

Rotation

Gets the current rotation of the touchscreen

View Source

Declaration

public RotationType Rotation { get; }

IsCalibrated

Returns <b>true</b> if the touchscreen has been calibrated, otherwise <b>false</b>

View Source

Declaration

public bool IsCalibrated { get; }

IsTouched

Returns <b>true</b> if the touchscreen is currently being touched, otherwise <b>false</b>

View Source

Declaration

public bool IsTouched { get; }

Methods

SetCalibrationData(IEnumerable<CalibrationPoint>)

Sets the calibration data for the touchscreen

View Source

Declaration

public void SetCalibrationData(IEnumerable<CalibrationPoint> data)

Parameters

Type	Name	Description
System.Collections.Generic.IEnumerable<Meadow.Hardware.CalibrationPoint>	data	The calibration point

Events

TouchDown

Event raised when the touchscreen is pressed

View Source

Declaration

public event TouchEventHandler? TouchDown

Event Type

Meadow.Hardware.TouchEventHandler

TouchUp

Event raised when the touchscreen is released

View Source

Declaration

public event TouchEventHandler? TouchUp

Event Type

Meadow.Hardware.TouchEventHandler

TouchClick

Event raised when a cycle of press and release has occurred

View Source

Declaration

public event TouchEventHandler? TouchClick

Event Type

Meadow.Hardware.TouchEventHandler

TouchMoved

Event raised when a cycle of press and release has occurred

View Source

Declaration

public event TouchEventHandler? TouchMoved

Event Type

Meadow.Hardware.TouchEventHandler

Implements

• Meadow.Hardware.ICalibratableTouchscreen
• Meadow.Hardware.ITouchScreen