private static Task TestUltrasoundSensor()
{
var module = new PiTopModule();
var plate = module.GetOrCreatePlate <FoundationPlate>();
var cancellationSource = new CancellationTokenSource();
Task.Run(() =>
{
var sensor =
plate.GetOrCreateDevice <UltrasonicSensor>(DigitalPort.D3, (dp, c) => new UltrasonicSensor(dp, c));
Observable
.Interval(TimeSpan.FromSeconds(0.5))
.Subscribe(_ => { Console.WriteLine(sensor.Distance); });
Console.WriteLine("press enter key to exit");
}, cancellationSource.Token);
return(Task.Run(() =>
{
Console.ReadLine();
module.Dispose();
cancellationSource.Cancel(false);
}, cancellationSource.Token));
}
private static Task TestPotentiometer(AnaloguePort port)
{
var cancellationSource = new CancellationTokenSource();
var module = new PiTopModule();
var plate = module.GetOrCreatePlate <FoundationPlate>();
Task.Run(() =>
{
var potentiometer = plate.GetOrCreateDevice <Potentiometer>(port);
Observable
.Interval(TimeSpan.FromSeconds(0.5))
.Select(_ => potentiometer.Position)
.Subscribe(Console.WriteLine);
Console.WriteLine("press enter key to exit");
}, cancellationSource.Token);
return(Task.Run(() =>
{
Console.ReadLine();
module.Dispose();
cancellationSource.Cancel(false);
}, cancellationSource.Token));
}
private static Task TestButton(DigitalPort buttonPort, DigitalPort[] ledPorts)
{
var cancellationSource = new CancellationTokenSource();
var module = new PiTopModule();
var plate = module.GetOrCreatePlate <FoundationPlate>();
Task.Run(() =>
{
var button = plate.GetOrCreateDevice <Button>(buttonPort);
foreach (var digitalPort in ledPorts)
{
plate.GetOrCreateDevice <Led>(digitalPort);
}
var leds = plate.DigitalDevices.OfType <Led>().ToArray();
var buttonStream = Observable
.FromEventPattern <bool>(h => button.PressedChanged += h, h => button.PressedChanged -= h);
var pos = -1;
buttonStream
.Where(e => e.EventArgs)
.Select(_ =>
{
var next = ((pos + 1) % leds.Length);
var pair = new { Prev = pos, Next = ((pos + 1) % leds.Length) };
pos = next;
return(pair);
})
.Subscribe(p =>
{
if (p.Prev >= 0)
{
leds[p.Prev].Off();
}
leds[p.Next].On();
});
Console.WriteLine("press enter key to exit");
}, cancellationSource.Token);
return(Task.Run(() =>
{
Console.ReadLine();
module.Dispose();
cancellationSource.Cancel(false);
}, cancellationSource.Token));
}
private static Task TestSemaphore(DigitalPort ultrasonicSensorPort, DigitalPort greenLedPort, DigitalPort yellowLedPort, DigitalPort redLedPort, int greenThreshold, int yellowThreshold, int redThreshold)
{
var module = new PiTopModule();
var plate = module.GetOrCreatePlate <FoundationPlate>();
var cancellationSource = new CancellationTokenSource();
var greenLed = plate.GetOrCreateDevice <Led>(greenLedPort);
greenLed.DisplayProperties.Add(new NamedCssColor("green"));
var yellowLed = plate.GetOrCreateDevice <Led>(yellowLedPort);
yellowLed.DisplayProperties.Add(new NamedCssColor("yellow"));
var redLed = plate.GetOrCreateDevice <Led>(redLedPort);
redLed.DisplayProperties.Add(new NamedCssColor("red"));
ClearLeds();
Task.Run(() =>
{
var sensor = plate.GetOrCreateDevice <UltrasonicSensor>(ultrasonicSensorPort);
Observable
.Interval(TimeSpan.FromSeconds(0.5))
.Subscribe(_ =>
{
var distance = sensor.Distance.Value;
switch (distance)
{
case { } x when x > greenThreshold:
greenLed.On();
yellowLed.Off();
redLed.Off();
break;
case { } x when x <greenThreshold && x> yellowThreshold:
greenLed.Off();
yellowLed.On();
redLed.Off();
break;
case { } x when x < redThreshold:
greenLed.Off();
yellowLed.Off();
redLed.On();
break;
}
});
Console.WriteLine("press enter key to exit");
}, cancellationSource.Token);
return(Task.Run(() =>
{
Console.ReadLine();
module.Dispose();
ClearLeds();
cancellationSource.Cancel(false);
}, cancellationSource.Token));
void ClearLeds()
{
greenLed.Off();
yellowLed.Off();
redLed.Off();
}
}