I am developing a simple app that need to send and receive some data from azure. First of all, I have worked with a simulated device(and console app). I have configured my azure portal to work with the this data and everything works well.
At the same time, I checked my sensor with unit-tests and it works fine too. Now, I want to send some data from my sensors to azure(with Universal App). I tried to work with this link: https://blogs.windows.com/buildingapps/2016/03/03/connect-your-windows-app-to-azure-iot-hub-with-visual-studio/#BgxLrRq1bXolCitM.97
I choose the device that I worked with in the simulated device and got an error of "unknown host" for the client connect. Do I need to register my raspberry pi as a device before? How I can send a simple string from known universal app (i.e: https://developer.microsoft.com/en-us/windows/iot/samples/helloblinky ) to azure?
I am working with Windows 10 IOT, c#
Thanks!
Update: I tried to do all what you suggested without success. Relavant code:
public static async Task SendDeviceToCloudMessageAsync()
{
CreateClient();
var currentTemperature = 20 /*getCurrentTemperature()*/;
var currentHumidity = 20/*getCurrentHumidity()*/;
var telemetryDataPoint = new
{
deviceId = DeviceId,
plantID = 7,
temperature = currentTemperature,
humidity = currentHumidity,
userId = 1
};
var messageString = JsonConvert.SerializeObject(telemetryDataPoint);
var message = new Message(Encoding.ASCII.GetBytes(messageString));
message.Properties.Add("temperatureAlert", (currentTemperature > 30) ? "true" : "false");
Debug.WriteLine("{0} > Sending message: {1}", DateTime.Now, messageString);
await deviceClient.SendEventAsync(message);
}
I don't know how to validate the "sharedAccessKey" on connectionString var
Error(on await deviceClient.SendEventAsync(message) line): Exception thrown: 'System.Exception' in System.Private.CoreLib.ni.dll No such host is known. (Exception from HRESULT: 0x80072AF9)
You will need to do two things here.
First up, connect your device. Details here - https://developer.microsoft.com/en-us/windows/iot/docs/ConnectDeviceToCloud
Second, connect your app. - https://developer.microsoft.com/en-us/windows/iot/docs/ConnectAppToCloud
If you run into issues when doing the above two, then, you will be able to ask more specific questions.