iot

.cs

using System.Device.Gpio;
using System.Device.Gpio.Drivers;

var _gpioController = new GpioController(
    numberingScheme: PinNumberingScheme.Logical,
    driver: new SysFsDriver());

var relayPin = 128 + 18;

Console.WriteLine("open pin");
_gpioController.OpenPin(relayPin);

Console.WriteLine("set pin mode to input");
_gpioController.SetPinMode
(
    relayPin,
    PinMode.Input
);

Console.WriteLine("subscribe");
Subscribe();

ConsoleKeyInfo cki;
Console.WriteLine("press c to start");
cki = Console.ReadKey();

Console.WriteLine("start test relay process");
if(cki.Key == ConsoleKey.C)
{
    Console.WriteLine("set pin mode to output");
    _gpioController.SetPinMode(
        relayPin,
        PinMode.Output
    );

    Console.WriteLine("write value");
    _gpioController.Write(
        relayPin,
        PinValue.High
    );

    Console.WriteLine("set pin mode to input");
    _gpioController.SetPinMode(
        relayPin,
        PinMode.Input
    );

    Console.WriteLine("resubscribe");
    Unsubscribe();
    Subscribe();
}

void Subscribe()
{
    _gpioController.RegisterCallbackForPinValueChangedEvent(
        pinNumber: relayPin,
        eventTypes: PinEventTypes.Rising,
        callback: (_, args) =>
        {
            Console.WriteLine($"{args.PinNumber} is rising");
        });

    _gpioController.RegisterCallbackForPinValueChangedEvent(
        pinNumber: relayPin,
        eventTypes: PinEventTypes.Falling,
        callback: (_, args) =>
        {
            Console.WriteLine($"{args.PinNumber} is falling");
        });
}

void Unsubscribe()
{
    _gpioController.UnregisterCallbackForPinValueChangedEvent(
        pinNumber: relayPin,
        callback: (_, _) =>
        {
            Console.WriteLine("unsubscribed");
        });
}