MeadowApp.cs

using Meadow;
using Meadow.Devices;
using Meadow.Hardware;
using System.Text;
using System.Threading.Tasks;

namespace GpioInterrogation;

public class MeadowApp : App<F7FeatherV2>
{
    public override Task Run()
    {
        // uncomment to build out a table of pins functions
        StringBuilder table = new StringBuilder();
        table.Append(BuildHeader());
        foreach (var pin in Device.Pins.AllPins)
        {
            table.Append(BuildRow(pin));
        }
        Resolver.Log.Info(table.ToString());

        //foreach (var pin in Device.Pins.AllPins) {
        //    Resolver.Log.Info($"Found pin: {pin.Name}");
        //    foreach (var channel in pin.SupportedChannels) {
        //        Resolver.Log.Info($"Contains a {channel.GetType()} channel called: {channel.Name}.");
        //    }
        //}

        return Task.CompletedTask;
    }

    private string BuildHeader()
    {
        return "| Meadow Pin Name | MCU Pin Name | Digital Channel | Analog Channel | PWM Timer Channel | Interrupt Group | \r\n" +
               "|-----------------|--------------|-----------------|----------------|-------------------|-----------------| \r\n";
    }

    private string BuildRow(IPin pin)
    {
        StringBuilder stringBuilder = new StringBuilder("| ");

        stringBuilder.Append($"{pin} | {pin.Key.ToString()} | ");

        IUartChannelInfo? uartChan = null;
        ICanChannelInfo? canChan = null;
        IPwmChannelInfo? pwmChan = null;
        II2cChannelInfo? i2cChan = null;
        ISpiChannelInfo? spiChan = null;
        IAnalogChannelInfo? analogChan = null;
        IDigitalChannelInfo? digitalChan = null;

        foreach (var chan in pin.SupportedChannels)
        {

            switch (chan)
            {
                case IUartChannelInfo u:
                    uartChan = u;
                    break;
                case ICanChannelInfo c:
                    canChan = c;
                    break;
                case IPwmChannelInfo p:
                    pwmChan = p;
                    break;
                case II2cChannelInfo i:
                    i2cChan = i;
                    break;
                case ISpiChannelInfo s:
                    spiChan = s;
                    break;
                case IAnalogChannelInfo a:
                    analogChan = a;
                    break;
                case IDigitalChannelInfo d:
                    digitalChan = d;
                    break;
                default:
                    break;
            }
        }

        stringBuilder.Append($" {((digitalChan == null) ? "n/a" : digitalChan?.Name)} |");
        stringBuilder.Append($" {((analogChan == null) ? "n/a" : analogChan?.Name)} |");
        stringBuilder.Append($" {((pwmChan == null) ? "n/a" : pwmChan?.TimerChannel.ToString())} |");
        stringBuilder.Append($" {((digitalChan == null) ? "n/a" : digitalChan?.InterruptGroup?.ToString())} |");
        stringBuilder.Append("\r\n");
        return stringBuilder.ToString();
    }
}