MainController.cs

using MagicEightMeadow.Controllers;
using MagicEightMeadow.Hardware;
using Meadow;
using Meadow.Foundation.Sensors.Motion;
using Meadow.Units;
using System;
using System.Threading.Tasks;

namespace MagicEightMeadow;

internal class MainController
{
    private bool isAnswering;
    private IMagicEightMeadowHardware hardware;
    private DisplayController displayController;

    public MainController(IMagicEightMeadowHardware hardware)
    {
        this.hardware = hardware;
    }

    public void Initialize()
    {
        hardware.Initialize();

        displayController = new DisplayController(hardware.Display);

        var consumer = Bmi270.CreateObserver(
            handler: result => MotionSensorHandler(result),
            filter: result => MotionSensorFilter(result));
        hardware.MotionSensor.Subscribe(consumer);
    }

    private async void MotionSensorHandler(IChangeResult<(Acceleration3D? a3D, AngularVelocity3D? v3D, Temperature? t)> e)
    {
        if (isAnswering)
            return;
        isAnswering = true;

        hardware.RgbPwmLed.SetColor(Color.Orange);

        displayController.ShowAnswer();

        await Task.Delay(TimeSpan.FromSeconds(5));

        displayController.ShowQuestion();

        hardware.RgbPwmLed.SetColor(Color.Green);

        isAnswering = false;
    }

    private bool MotionSensorFilter(IChangeResult<(Acceleration3D? a3D, AngularVelocity3D? v3D, Temperature? t)> e)
    {
        return e.New.v3D.Value.X.DegreesPerSecond > 0.75 || e.New.v3D.Value.Y.DegreesPerSecond > 0.75 || e.New.v3D.Value.Z.DegreesPerSecond > 0.75;
    }

    public void Run()
    {
        displayController.ShowQuestion();

        hardware.MotionSensor.StartUpdating(TimeSpan.FromSeconds(1));
    }
}