Mono Ezb.connect Not Working

patrick_c#

Germany

Asked Dec 2015 — Edited Dec 2015

Hello, i tried to program my EZ Robot with C# under Ubuntu 15.04.

using System;
using EZ_B;

public class HelloWorld
{
public static void Main()
{
Console.WriteLine("Enter IP of EZ-Robot");
string ip = Console.ReadLine();
Console.WriteLine("IP: "+ip );
Console.WriteLine("trying "+ ip);
Console.WriteLine("trying to connect with " +ip);

//connecting
EZB _ezb = new EZB();
_ezb.Connect(ip);
Console.WriteLine("connecting...");
if (_ezb.IsConnected)
{
Console.WriteLine("[+] EZB connected at ip: " + ip);
}
else
{
Console.WriteLine("[-] EZB NOT connected at ip: " + ip);
}

}
}

Thats my code, but if i execute it...

patrick@patrick-X781X-X782X:~/ezrobot$ mono bsp.exe
Unknown heap type: #GUlD

Unknown heap type: #Blop

Enter IP of EZ-Robot
192.168.1.1
IP: 192.168.1.1
trying 192.168.1.1
trying to connect with 192.168.1.1
Missing method .ctor in assembly /home/patrick/ezrobot/EZ_B.dll, type System.Runtime.CompilerServices.ExtensionAttribute
Can't find custom attr constructor image: /home/patrick/ezrobot/EZ_B.dll mtoken: 0x0a00000a

Unhandled Exception:
System.TypeLoadException: Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'EZ_B'.
at HelloWorld.Main () [0x00000] in :0
[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeLoadException: Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'EZ_B'.
at HelloWorld.Main () [0x00000] in :0

There must be a mistake with the "ez.Connect" command....

Thanks for help, Patrick.

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Show all 32 comments

thetechguru

PRO

USA

#13 Dec 2015

Please write a tutorial! That would be wonderful.

Alan

patrick_c#

Germany

#14 Dec 2015

ok, I´ll start tonight

DJ Sures

PRO

Synthiam

#15 Dec 2015

Fine tune offsets every servo position by the number provided.

This is to make a servo calibrate.

It does work in Windows.

patrick_c#

Germany

#16 Dec 2015

Hi, I know what Fine Tune is

But it don´t work...

patrick_c#

Germany

#17 Dec 2015

Code:
bsp.cs(27,14): error CS1056: Unexpected character `'
bsp.cs(27,21): error CS1056: Unexpected character `'
bsp.cs(27,25): error CS1056: Unexpected character `'
bsp.cs(27,31): error CS1056: Unexpected character `'
bsp.cs(27,31): error CS1525: Unexpected symbol `Fine', expecting `,', `;', or `='
bsp.cs(27,36): error CS1056: Unexpected character `'
bsp.cs(27,42): error CS1056: Unexpected character `'
bsp.cs(27,49): error CS1056: Unexpected character `'
bsp.cs(27,55): error CS1056: Unexpected character `'
bsp.cs(27,60): error CS1056: Unexpected character `'
bsp.cs(27,70): error CS1056: Unexpected character `'
bsp.cs(27,70): error CS1525: Unexpected symbol `5', expecting `,', `;', or `='

patrick_c#

Germany

#18 Dec 2015

with this command

Code:
_ezb.Servo.SetServoFineTune(Servo.ServoPortEnum.D0, 5);

DJ Sures

PRO

Synthiam

#19 Dec 2015

I just ran that command with no errors - are you executing that method before or after the ez-b is connected?

patrick_c#

Germany

#20 Dec 2015

Code:
using System;
using EZ_B;
   
public class HelloWorld {
 
    static EZB _ezb;
 
    public static void Main() {
 
        _ezb = new EZB();
 
        Console.WriteLine("Connecting to EZ-B v4...");
 
        _ezb.Connect("192.168.1.1");
 
        if (!_ezb.IsConnected) {
 
            Console.WriteLine("Unable to connect to EZ-B v4");
 
            return;
        }
 
        Console.WriteLine("Hello World, I am moving servo d0 to position 90!");
  
        _ezb.Servo.SetServoPosition(Servo.ServoPortEnum.D0, 90);
        _ezb.Servo.SetServoFineTune(Servo.ServoPortEnum.D0, 5);
 
        _ezb.Disconnect();
    }
}

DJ Sures

PRO

Synthiam

#21 Dec 2015

Setting the fine tune after the servo position is set is backward approach.

Try this...

Code:

using System;
using EZ_B;
   
public class HelloWorld {
 
    static EZB _ezb;
 
    public static void Main() {
 
        _ezb = new EZB();

        _ezb.Servo.SetServoFineTune(Servo.ServoPortEnum.D0, 5);
 
        Console.WriteLine("Connecting to EZ-B v4...");
 
        _ezb.Connect("192.168.1.1");
 
        if (!_ezb.IsConnected) {
 
            Console.WriteLine("Unable to connect to EZ-B v4");
 
            return;
        }
 
        Console.WriteLine("Hello World, I am moving servo d0 to position 90!");
  
        _ezb.Servo.SetServoPosition(Servo.ServoPortEnum.D0, 90);
 
        _ezb.Disconnect();
    }
}

Set the fine tune before you use the servos - because that's an offset which the servos will require.

PS, thanks for wrapping your code

Much easier for my eyes!

patrick_c#

Germany

#22 Dec 2015

I tried exactly the same code as you posted, but the same error:

[u]bsp.cs(12,14): error CS1056: Unexpected character `'
bsp.cs(12,21): error CS1056: Unexpected character `'
bsp.cs(12,25): error CS1056: Unexpected character `'
bsp.cs(12,31): error CS1056: Unexpected character `'
bsp.cs(12,31): error CS1525: Unexpected symbol `Fine', expecting `,', `;', or `='
bsp.cs(12,36): error CS1056: Unexpected character `'
bsp.cs(12,42): error CS1056: Unexpected character `'
bsp.cs(12,49): error CS1056: Unexpected character `'
bsp.cs(12,55): error CS1056: Unexpected character `'
bsp.cs(12,60): error CS1056: Unexpected character `'
bsp.cs(12,70): error CS1056: Unexpected character `'
bsp.cs(12,70): error CS1525: Unexpected symbol `5', expecting `,', `;', or `='
Compilation failed: 12 error(s), 0 warnings
[/u]

DJ Sures

PRO

Synthiam

#23 Dec 2015

Not sure where those errors are coming from - but looks like something broken in Mono (not surprising). Try reinstalling mono? Ensuring you have the latest version and dependencies? There are no known issues with the entire EZ-Robot mono library - i ran the entire test last night.

When googling the error "error CS1056", it could be caused by a European character in code: https://msdn.microsoft.com/en-us/library/59k0x971.aspx

Mono, like most programming languages, it not friendly to all character sets. Given that it's complaining about the commas "," and semicolons ";" or something.

DJ Sures

PRO

Synthiam

#24 Dec 2015

It indeed looks like strange unicode characters in your code. For example, when i copy and paste the errors that you posted into Notepad.exe, this is what i see.

Notice how after filtering the code that you posted through notepad (Which removes any bits outside of the ascii-7 charset), displays different errors.

Somehow, your keyboard is putting strange characters into the code while you type.

DJ Sures

PRO

Synthiam

#25 Dec 2015

Here is additional information regarding the error. It appears using a non-us keyboard character-set will cause problems with mono. I know that it will cause problems with GCC C/C++. I guess mono is included in that list..

Such as this: https://teamtreehouse.com/community/compiler-error-in-if-else-statement

I believe the issue is with the character-set on your pc.

patrick_c#

Germany

#26 Dec 2015

Hi

i googled and found that somebody installed Mono 4.0 and it worked.
On the Mono homepage i found "Mono develop". A very useful program.

Could be "Visual Studio Lite" for Linux

But there are still the same errors. With the newest Mono version....

I´ll try something else tomorrow, by me it´s 11:48 PM

Good night, and thanks for your time

patrick_c#

Germany

#27 Dec 2015

Hi,

I am using Ubuntu 15.04. With german keyboard layout.

I am woundering about, that if i delete this line

Code:
_ezb.Servo.SetServoFineTune(Servo.ServoPortEnum.D0, 5);

it compiles without no warnings.

Code:
using System;
using EZ_B;
   
public class HelloWorld {
 
    static EZB _ezb;
 
    public static void Main() {
 
        _ezb = new EZB();

        _ezb.Servo.SetServoFineTune(Servo.ServoPortEnum.D0, 5);
 
        Console.WriteLine("Connecting to EZ-B v4...");
 
        _ezb.Connect("192.168.1.1");
 
        if (!_ezb.IsConnected) {
 
            Console.WriteLine("Unable to connect to EZ-B v4");
 
            return;
        }
 
        Console.WriteLine("Hello World, I am moving servo d0 to position 90!");
  
        _ezb.Servo.SetServoPosition(Servo.ServoPortEnum.D0, 90);
 
        _ezb.Disconnect();
    }
}

if i use this code, there are the errors i posted....

DJ Sures

PRO

Synthiam

#28 Dec 2015

I think it's because the line was typed vs copy and pasted. It's going to be difficult for me to diagnose this one because I don't have a German keyboard or am I on the mono development team. They sadly do not have a great forum for assistance. Can you change the character set of your Linux installation to USA keyboard? That seems to be mono's solution to this.

DJ Sures

PRO

Synthiam

#29 Dec 2015

There's an update to the mono library, which includes a more efficient camera thread, audio thread, and Auto Position thread.

patrick_c#

Germany

#30 Dec 2015

Hi,

I have also no English keyboard... :/
But I found an old (very old) Panasonic Toughbook CF29 with Englisch keyboard. I´ll try later with an englisch installed Kali Linux.
Thanks for your time!

DJ Sures

PRO

Synthiam

#31 Dec 2015

Anytime

It might also be the selected character set in the operating system - not just the keyboard.

patrick_c#

Germany

#32 Dec 2015

lol, if I set the keyboard layout to "EN" and write the

Code:
_ezb.Servo.SetServoFineTune(Servo.ServoPortEnum.D0, 5);

with EN settings, it compiles. So I have to set only the keyboard layout.

Difficult to find the right keys

Thanks for your great time and help

Lol, I want to work at ezrobot

Welcome to Synthiam!

patrick_c#

Mono Ezb.Connect Not Working

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