Kuika's Is Connected action is used to check whether the Bluetooth device has established a connection with the app. It determines whether a successful connection with a specific Bluetooth device is available. If there is a connection, data can be sent, if there is no connection, a warning can be issued to the user or a reconnection process can be started. In this tutorial, you will learn how to add an Is Connected action to your application.

The Is Connected action only supports mobile applications.

This training content consists of the following topics:

Adding a data source connection to your app via Bluetooth.
Adding a new method for Bluetooth connection to your app.
Adding Is Connected action.

Add Data Source Connectivity to Your App with Bluetooth

Log in to the Kuika platform and open the mobile project you will work on from the Apps screen.
Go to the Datasources module. Here you can view existing data sources, actions and tables or add a new data source.

Click on the + icon next to the Sources heading.

Select the Bluetooth data source and give it a name.
Create the data source by clicking the CREATE button.
On the screen that opens, fill in the following fields:

Device Name: Display name of the device (Mandatory)
Device ID: Unique ID of the device (Optional)
Device Address: The Bluetooth address of the device. For example, the address of a Bluetooth device: “00:1A:2B:3C:4D:5E.” (Optional).

7. Complete the registration by clicking the CREATE button.

Add a New Method for Bluetooth Connection to Your Application

Characteristics are used to accurately distinguish and make sense of data measurements between Bluetooth devices. Each characteristic represents a specific type of data.

After adding the Bluetooth data source, click the ADD NEW METHOD button.

GATT (Generic Attribute Profile) is the standard protocol that regulates the data communication of BLE devices. Fill in the following fields when adding a new method:

Name Method name
Characteristic ID: Unique ID that identifies the data
Service ID Service ID of BLE devices
Characteristic Type: UUID indicating the type of data (Read, write, etc.) Each characteristic is identified by a UUID (Universally Unique Identifier) and can allow operations such as read (Read), write (Write) or mark (Notify or Indicate).

Save your method by clicking the SAVE button.
Select your method and add an action by clicking the ADD ACTION button in the Properties panel.

Sub Array: Used to select a specific part of the data. For example, click +ADD ACTION > Sub Array to ensure that the first two values read from a device are converted to Byte (divide by 128) and converted to temperature value. Click Symbol Picker in Sub Array.

In the “Count” field, enter the value “2” since the first two values are requested.

Click “+ADD ACTION>Arithmetic>Divide” for byte conversion.

Divide: Allows data conversion by dividing by a specific value. Click the Symbol Picker in Value in Divide and select Action Results>Sub Array to call the value from Sub Array. Then type “128” in the value2 field.

5. Complete the process by clicking the UPDATE button.

Add Is Connected Action

After creating a new method: