Help I want to build a web based app

[marstc1]

Hi guys,

As it says in the title I would like to build a web based app to control my tellstick but don't know where to start, any help / advice would be much appreciated.

I am currently training to be an MVC web application developer using C# so idealy this would be the technology I would like to use. I am hoping this project will give me a good oppotunity to learn about using API's etc. as well as improving my current home automation system.

Intially my app could be hosted on a PC in my house with my tellstick connected to it and only accessed locally using devices connected to my LAN.

So far I have looked at telldus live as one option .. I really like this idea but having problems setting up oAuth in my application and also have slight concerns about possible lag.

I have also been looking at using the TelldusNETWrapper and tdTool but I am having real trouble getting started with these too.

Any sample scripts or advice to get me going in the right direction would be really appreciated.

Thanks in advance, Chris.

[marstc1]

Has anyone had any success using C#?

[MartinV]

Switch King is developed in C#, using Telldus wrapper as foundation.

[marstc1]

Wow, switch king is impressive!

Was it the TelldusNETWrapper.dll which you used located in the development folder after installation?

[micke.prag]

You can find the source for the wrapper here:
http://developer.telldus.com/browser/bindings/dotnet

There is also an example how to use it.

[marstc1]

Thanks guys, I have managed to take a step forward however I have hit another problem ...

I have managed to successfully use the following methods to list my devices ..

TelldusNETWrapper.tdGetNumberOfDevices()
TelldusNETWrapper.tdGetDeviceId()
TelldusNETWrapper.tdGetName()

However when I try to use the following methods nothing happens? ..

TelldusNETWrapper.tdTurnOn(deviceID)
TelldusNETWrapper.tdTurnOff(deviceID)

I have debugged through it and can confirm that the method runs and does not throw an exception. The device ID which I am passing into the method is an int and is the expected value which corresponds to the value of my device. I have the same issue with the Basic Turn On device example.

Finally when trying to use the TelldusNETWrapper.tdClose() method I get the following exception ...

"Attempted to read or write protected memory. This is often an indication that other memory is corrupt."

Please can you let me know what I am doing wrong to resolve these issues.

BTW I am using VS2010 and I have tried using .net 4.0, 3.5 and 2.0 ... is this wrapper compatible with my setup?

Many thanks


Chris

[micke.prag]

Code example?
What is returned from TelldusNETWrapper.tdTurnOn(deviceID)?

[marstc1]

Code Sample - Here is my class ...

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using TelldusWrapper;
using Tellstick.Models;

namespace Tellstick.Controllers
{
public class HomeController : Controller
{
int SUPPORTED_METHODS = TelldusNETWrapper.TELLSTICK_TURNON | TelldusNETWrapper.TELLSTICK_TURNOFF | TelldusNETWrapper.TELLSTICK_DIM;

public ActionResult Index()
{
HomeIndexViewModel viewModel = new HomeIndexViewModel() { Devices = new List<Device>(), Error = false };

int numDevices = TelldusNETWrapper.tdGetNumberOfDevices();

if (numDevices < 0)
{
viewModel.Error = true;
viewModel.ReturnMessage = TelldusNETWrapper.tdGetErrorString(numDevices);
}
else
{
for (int i = 0; i < numDevices; i++)
{
int id = TelldusNETWrapper.tdGetDeviceId(i);
string name = TelldusNETWrapper.tdGetName(id);
UpdateStatus(id);

viewModel.Devices.Add(new Device { ID = id, Name = name });
}
}

// TelldusNETWrapper.tdClose();

return View(viewModel);
}

public ActionResult On(int id)
{
var result = TelldusNETWrapper.tdTurnOn(id);
ViewBag.ReturnMessage = TelldusNETWrapper.tdGetErrorString(result);
ViewBag.ReturnValue = result.ToString();
return View();
}

public ActionResult Off(int id)
{
var result = TelldusNETWrapper.tdTurnOff(id);
ViewBag.ReturnMessage = TelldusNETWrapper.tdGetErrorString(result);
ViewBag.ReturnValue = result.ToString();
return View();
}

public void UpdateStatus(int deviceId)
{
int status = TelldusNETWrapper.tdLastSentCommand(deviceId, SUPPORTED_METHODS);
string value = TelldusNETWrapper.tdLastSentValue(deviceId);
}
}
}

The following is returned from TelldusNETWrapper.tdTurnOn(id);

-1 - TellStick not found

.. although it is plugged in and works when I use it through TelldusCentre?

[micke.prag]

I suspect you have some version mismatch. Maybe you have some 2.0 version of telldus-core somewhere in your system?

[marstc1]

[SOLVED]

Well done! .. your suspisions were correct. The tellduscore.dll in system32 was an old version, an uninstall and reinstall done the trick.

Many thanks for your assistance with this issue.