Communicating with IoT devices

There are several different ways you can communicate with your IoT devices. This includes device-to-cloud messages, cloud-to-device messages, file upload notifications, direct method invocation, and operation monitoring events.

Device-to-cloud messaging

We can use the Microsoft.Azure.Devices.Client SDK to create a simulated device. On the device, you will need to install an IoT device SDK and use it to establish a connection to IoT Hub using the connection string you obtained when you registered the device in IoT Hub.

The following code block shows some sample code in Python that demonstrates how to connect a device to IoT Hub using the Azure IoT device SDK:

import os
from azure.iot.device import IoTHubDeviceClient
# Connection string for the device
CONNECTION_STRING = "<your device connection string>"
# Connect to IoT Hub
client = IoTHubDeviceClient.create_from_connection_string(CONNECTION_STRING)
client.connect()
# Send a...