FEZ Cream SerialDevice

NETMF & Gadgeteer
1

Hi everyone,

after a while I decided to start playing with Raspberry Pi2 and FEZ Cream, I know FEZ Cream is no longer supported, but I won’t throw it away yet :slight_smile:.

I wanted to try to setup a device using SerialDevice but I got an exception:

Exception thrown: 'System.ArgumentOutOfRangeException' in System.Private.CoreLib.ni.dll
Exception thrown: 'System.ArgumentOutOfRangeException' in Ph Sensor Test.exe
Exception thrown: 'System.ArgumentOutOfRangeException' in System.Private.CoreLib.ni.dll
Specified argument was out of the range of valid values.
Parameter name: index

code, where it happened:

protected async override Task Initialize(ISocket parentSocket)
{
    parentSocket.EnsureTypeIsSupported(SocketType.U);
    pinX = await parentSocket.CreateDigitalIOAsync(SocketPinNumber.Three, false);
    pinY = await parentSocket.CreateDigitalIOAsync(SocketPinNumber.Six, false);
    serial = await parentSocket.CreateSerialDeviceAsync(); //exception is thrown here
}

Could you please advise, what’s happening or what did I do wrong or forgot to do?

2

Do you have any more of a stack trace from the exception?

3

Hi, this is what I get:

at System.Runtime.InteropServices.WindowsRuntime.IVectorViewToIReadOnlyListAdapter.Indexer_Get[T](Int32 index)
   at GHIElectronics.UWP.GadgeteerCore.NativeInterfaces.SerialDevice.<CreateInterfaceAsync>d__18.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at GHIElectronics.UWP.GadgeteerCore.Socket.<CreateSerialDeviceAsync>d__59.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at Ph_Sensor_Test.PhSensorTest.<Initialize>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at GHIElectronics.UWP.GadgeteerCore.Module.<CreateAsync>d__16`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at Ph_Sensor_Test.MainPage.<Setup>d__3.MoveNext()
4

Can you post a slimmed down complete project that still shows the issue? Particularly the module class itself.

5

This is actually the only code I have in the project, because I just wanted to test UART.

using GHIElectronics.UWP.GadgeteerCore;
using System.Text;
using System.Threading.Tasks;
using SI = GHIElectronics.UWP.GadgeteerCore.SocketInterfaces;

namespace Ph_Sensor_Test
{
    public class PhSensor : Module
    {
        private SI.SerialDevice serial;
        private SI.DigitalIO pinX;
        private SI.DigitalIO pinY;

        public override string Name => "";

        public override string Manufacturer => "";

        protected async override Task Initialize(ISocket parentSocket)
        {
            parentSocket.EnsureTypeIsSupported(SocketType.U);
            pinX = await parentSocket.CreateDigitalIOAsync(SocketPinNumber.Three, false);
            pinY = await parentSocket.CreateDigitalIOAsync(SocketPinNumber.Six, false);
            serial = await parentSocket.CreateSerialDeviceAsync(); //throws exception here
        }

        public void SendQuery()
        {
            serial.Write(Encoding.UTF8.GetBytes("status\r"));
        }
    }
}

and it’s used in MainPage.xaml.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using GHIElectronics.UWP.Gadgeteer.Mainboards;
using GHIElectronics.UWP.GadgeteerCore;
using System.Diagnostics;

namespace Ph_Sensor_Test
{
    public sealed partial class MainPage : Page
    {
        private FEZCream mainboard;
        private PhSensor phSensor;

        public MainPage()
        {
            InitializeComponent();

            Setup();
        }

        private async void Setup()
        {
            mainboard = await Module.CreateAsync<FEZCream>();

            try
            {
                phSensor = await Module.CreateAsync<PhSensor>(mainboard.GetProvidedSocket(2));
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.Message);
                Debug.WriteLine(ex.StackTrace);
            }
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            phSensor.SendQuery();
            Output.Text = "Query sent.";
        }
    }
}

Using latest Win 10 IoT build - 10.0.15063.0

6

Is it possible to go back to the anniversary edition build to test? We have not validated it with any build since then.

7

I have considered that, but I don’t know, how I can install older version. IoT Dashboard doesn’t let me choose any older version than 15063.
I’m going to try Insider preview (16267) and will report back.

8

Well, I got the same error with Insider Preview.

9

If you call CreateSerialDeviceAsync on the Breakout module, are you able to get serial working there as a quick test or do you also get an exception?

10

I have tried that and I got the same exception.

Message:

Specified argument was out of the range of valid values.
Parameter name: index

StackTrace:

at System.Runtime.InteropServices.WindowsRuntime.IVectorViewToIReadOnlyListAdapter.Indexer_Get[T](Int32 index)
at GHIElectronics.UWP.GadgeteerCore.NativeInterfaces.SerialDevice.d__18.MoveNext()
— End of stack trace from previous location where exception was thrown —
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at GHIElectronics.UWP.GadgeteerCore.Socket.d__59.MoveNext()
— End of stack trace from previous location where exception was thrown —
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at GHIElectronics.UWP.Gadgeteer.Modules.Breakout.d__13.MoveNext()
— End of stack trace from previous location where exception was thrown —
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Ph_Sensor_Test.MainPage.d__4.MoveNext()

code:

public sealed partial class MainPage : Page
{
private FEZCream mainboard;
private PhSensor phSensor;
private Breakout breakout;

    public MainPage()
    {
        InitializeComponent();

        Setup();
    }

    private async void Setup()
    {
        mainboard = await Module.CreateAsync<FEZCream>();

        try
        {
            //phSensor = await Module.CreateAsync<PhSensor>(mainboard.GetProvidedSocket(2));
            breakout = await Module.CreateAsync<Breakout>(mainboard.GetProvidedSocket(2));
            var serial = await breakout.CreateSerialDeviceAsync();

        }
        catch (Exception ex)
        {
            Debug.WriteLine(ex.Message);
            Debug.WriteLine(ex.StackTrace);
        }
    }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        //phSensor.SendQuery();
        //Output.Text = "Query sent.";
    }
}
11

Since the Breakout fails too, it seems like something changed in one of the latest IoT Core releases that broke the Gadgeteering code. You can always get the code from its GitHub and take a look.

12

Thank you, will have a look.