Sub-Device Connectivity with Third-party Modules

The Integrated SDK allows you to implement sub-device connectivity for your gateway. This enables users to connect sub-devices to the internet and manage them through the gateway. This topic walks you through the process of enabling a gateway to connect to sub-devices using the Integrated SDK.

Background

The gateway acts as a bridge to help sub-devices connect to the internet for accessing cloud services. The SDK provides the implementation of two-way communication between the gateway and sub-devices. How the gateway communicates with its sub-devices is implemented by you. Your implementation refers to the application.

The SDK interacts with the application:

• The SDK interacts with the application by using callbacks.
• The application interacts with the SDK by using function interfaces.

Typically, the microcontroller on the gateway communicates with the wireless module through a serial port. The wireless module communicates with sub-devices using specific wireless protocols such as Zigbee and Bluetooth.

Prerequisites

You have created a sub-device product on the Tuya IoT Development Platform. This section takes a 3-gang switch as an example to briefly describe the procedure for product creation.

1. Log in to the Tuya IoT Development Platform.

2. In the Standard Category tab, choose Electrical > Switch.

   

   • Choose TuyaOS > Custom Solution.

     

   • Complete the required information and select Zigbee as the protocol.

     The protocol does not determine the actual functionality of the sub-device product. No matter what kind of sub-devices you want to connect to the gateway, you can choose Zigbee by default.

     

3. In this example, we create a 3-gang switch, so we add three standard data points used for three separate controls.

   

4. In the Device Interaction tab, choose Panel Control and select the desired app panel.

   

The creation of a 3-gang switch product is completed.