Difference in using VB vs C#

I was writting a simple program in Visual Basic using a Netduino Go, RgbLed module and a Button module. I am using 4.2.1 firmware and SDK.

Imports Microsoft.SPOT
Imports Microsoft.SPOT.Hardware
Imports SecretLabs.NETMF.Hardware
Imports SecretLabs.NETMF.Hardware.Netduino


Module Module1

    Sub Main()
    Dim Led As NetduinoGo.RgbLed = New NetduinoGo.RgbLed
    Dim PB As NetduinoGo.Button = New NetduinoGo.Button
    While (True)
      If PB.IsPressed Then
        Led.SetColor(100, 0, 100)
      Else
        Led.SetColor(0, 0, 0)
      End If
      Thread.Sleep(50)
    End While
  End Sub

End Module

But the program throws an exception "An unhandled exception of type 'System.ArgumentOutOfRangeException' occurred in NetduinoGo.RgbLed.dll"

The same program written in C# works as expected.

using Microsoft.SPOT;
using Microsoft.SPOT.Hardware;
using SecretLabs.NETMF.Hardware;
using SecretLabs.NETMF.Hardware.Netduino;
using System.Threading;

static class Module1
{
  public static void Main()
  {
    NetduinoGo.RgbLed Led = new NetduinoGo.RgbLed();
    NetduinoGo.Button PB = new NetduinoGo.Button();
    while ((true))
    {
      if (PB.IsPressed)
      {
        Led.SetColor(100, 0, 100);
      }
      else
      {
        Led.SetColor(0, 0, 0);
      }
      Thread.Sleep(50);
    }
  }
}

Am I doing something wrong or is this a bug?

Chuck

try this. I made a few changes. Notice the "Imports SecretLabs.NETMF.Hardware.NetduinoGo". You are using the wrong dll. Second, add () to the end of RgbLed and Button. Most likely its the Import causing the issue.

Imports Microsoft.SPOT
Imports Microsoft.SPOT.Hardware
Imports SecretLabs.NETMF.Hardware
Imports SecretLabs.NETMF.Hardware.NetduinoGo
Imports System.Threading

Module Module1

	Sub New()
	End Sub

	Sub Main()
    	Dim Led As New NetduinoGo.RgbLed()
    	Dim PB As New NetduinoGo.Button()
    	While (True)
        	If PB.IsPressed Then
            	Led.SetColor(100, 0, 100)
        	Else
            	Led.SetColor(0, 0, 0)
        	End If
        	Thread.Sleep(50)
    	End While
	End Sub

End Module

try this. I made a few changes. Notice the "Imports SecretLabs.NETMF.Hardware.NetduinoGo". You are using the wrong dll. Second, add () to the end of RgbLed and Button. Most likely its the Import causing the issue.

Thanks Dave,

I will try that.

I thought under 4.2.1 you should use only the SecretLabs.NETMF.Hardware.Netduino, least that is what I thought I read in one of the threads.

The code converter removed the ()s and it did not show any errors.

Chuck

Dave,

No joy,

• I replaced the code, same results.
• Changed from "Imports SecretLabs.NETMF.Hardware.Netduino" to "Imports SecretLabs.NETMF.Hardware.NetduinoGo", same results.
• Deleted C:\Program Files (x86)\Secret Labs\Netduino SDK\Assemblies\v4.2 directory and reinstalled 4.2.1, same results.

Visual Basic just does not want to play.

Chuck

There may be VB issues. As a former VB4,5,6 programer, then VB.NET programmer since 1999-2000-ish, I took the opportunity to learn C# while working with the Netduino. It gave me a good excuse to crash course on it. You may want to do the same. It looks daunting in the beginning (especially for me who never really worked in C languages) but I learned it pretty quickly. You can also download SharpDevelop or even use many of the conversion sites on the web to write code in VB.NET then convert to C# when you hit a wall. I find myself working in C# a lot more than VB now except for my VB centric clients who have a difficult time letting go of legacy technologies.

I find myself working in C# a lot more than VB now except for my VB centric clients who have a difficult time letting go of legacy technologies.

Thanks for looking at it.

I have been trying to write in both C# and VB, I originaly started with Turbo Pascal and later Delphi.

I use several converters to help me when I get stuck. The latest was from an attempt to upgrade an earlier program that used the shieldbase, LCD Display, 2 pots, 1 RgbLed, a TMP-36 temperature sensor and drove 4 relays. It was just something I put together when the Neduino Go came out. I wrote it in C# then converted to VB to help some other members. I just hate using the darn brackets.

Chuck

Hi Chuck, Could you please send me a ZIP of your entire solution directory for the above repro? I can then deploy it to a Netduino Go here and see what Visual Basic is grumpy about. We definitely want to make sure VB works well on these boards. Chris

Chris, Here is the zip file. Hopefully it is not to much, but I zip the project directory. Thanks, Chuck

Chris,

 

Any information on the problems while using Visual Basic? I have tried everything short of a (big) hammer.

 

Tried again tonight to SetColor of a RGBLed using a potentiometer. I get an exception for out of range on the Led. Value from the Pot is 0 to 255.

 

If I convert the code to C# it runs as expected.

 

Chuck

Thanks Steve,

 

Still trying to move towards C#, but I wanted to figure out why programs that had been working, whould now throw exceptions, some of which are a little cryptic in nature. In any case maybe this will help others that are still hanging onto Visual Basic to avoid case sensitive variables and those darn

{   brackets;}

 

Chuck

Chuck,

 

Give in to the brackets, resistance is futile, you will be assimilated.

 

You will become one with the Collective....

 

Regards,

The C# Collective