Updated on 2025-07-29 GMT+08:00

Obtaining Resources

Platform Connection Information

  1. Log in to the IoTDA console. In the navigation pane, choose IoTDA Instances, and click the target instance card.
    Figure 1 Instance management - Changing instance
  2. In the navigation pane, choose Overview. In the Instance Information area, click Access Details.
    Figure 2 Obtaining access information

Device Development Resources

You can connect devices to IoTDA using MQTT, LwM2M/CoAP, and HTTPS, as well as connect devices that use Modbus, OPC UA, and OPC DA through IoT Edge. You can also connect devices to IoTDA by calling APIs or integrating SDKs.

Resource Package

Description

Download Link

IoT Device Java SDK

Devices can connect to the platform by integrating the IoT Device Java SDK. The demo provides the sample code for calling SDK APIs. For details, see IoT Device Java SDK.

IoT Device Java SDK

IoT Device C SDK for Linux/Windows

Devices can connect to the platform by integrating the IoT Device C SDK. The demo provides the sample code for calling SDK APIs. For details, see IoT Device C SDK.

IoT Device C SDK for Linux/Windows

IoT Device C# SDK

Devices can connect to the platform by integrating the IoT Device C# SDK. The demo provides the sample code for calling SDK APIs. For details, see IoT Device C# SDK.

IoT Device C# SDK

IoT Device Android SDK

Devices can connect to the platform by integrating the IoT Device Android SDK. The demo provides the sample code for calling SDK APIs. For details, see IoT Device Android SDK.

IoT Device Android SDK

Device IoT Device Go SDK (Community Edition)

Devices can connect to the platform by integrating the IoT Device Go SDK. The demo provides the code sample for calling the SDK APIs. For details, see IoT Device Go SDK.

IoT Device Go SDK (Community Edition)

IoT Device Python SDK

Devices can connect to the platform by integrating the IoT Device Python SDK. The demo provides the code sample for calling the SDK APIs. For details, see

IoT Device Python SDK.

IoT Device Python SDK

IoT Device Tiny C SDK for Linux/Windows

Devices can connect to the platform by integrating the IoT Device Tiny C SDK. The demo provides the sample code for calling SDK APIs. For details, see IoT Device Tiny C SDK for Linux/Windows.

IoT Device Tiny C SDK for Linux/Windows

IoT Device ArkTS (OpenHarmony) SDK

Devices can connect to the platform by integrating the IoT Device ArkTS SDK. The demo provides the code sample for calling the SDK APIs. For details, see

IoT Device ArkTS (OpenHarmony) SDK.

IoT Device ArkTS (OpenHarmony) SDK

Native MQTT or MQTTS access

Devices can be connected to the platform using the native MQTT or MQTTS protocol. The demo provides the sample code for SSL-encrypted link setup, TCP link setup, data reporting, and topic subscription.

Examples: Java, Python, Android, C, C#, and Node.js

quickStart(Java)

quickStart(Android)

quickStart(Python)

quickStart(C)

quickStart(C#)

quickStart(Node.js)

Product model template

Product model templates of typical scenarios are provided. You can customize product models based on the templates.

For details, see Developing a Product Model Offline.

Product Model Example

Codec example

Demo codec projects are provided for you to perform secondary development.

Codec Example

Codec test tool

The tool is used to check whether the codec developed offline is normal.

Codec Test Tool

NB-IoT device simulator

The tool is used to simulate the access of NB-IoT devices to the platform using LwM2M over CoAP for data reporting and command delivery.

For details, see Connecting and Debugging an NB-IoT Device Simulator.

NB-IoT Device Simulator

Application Development Resources

The platform provides a wealth of application-side APIs to ease application development. Applications can call these APIs to implement services such as secure access, device management, data collection, and command delivery.

Resource Package

Description

Download Link

Application API Java Demo

You can call application-side APIs to experience service functions and service processes.

API Java Demo

Application Java SDK

You can use Java methods to call application-side APIs to communicate with the platform. For details, see Java SDK.

Application Java SDK

Application .NET SDK

You can use .NET methods to call application-side APIs to communicate with the platform. For details, see .NET SDK.

Application .NET SDK

Application Python SDK

You can use Python methods to call application-side APIs to communicate with the platform. For details, see Python SDK.

Application Python SDK

Application Go SDK

You can use Go methods to call application-side APIs to communicate with the platform. For details, see Go SDK.

Application Go SDK

Application Node.js SDK

You can use Node.js methods to call application-side APIs to communicate with the platform. For details, see Node.js SDK.

Application Node.js SDK

Application PHP SDK

You can use PHP methods to call application-side APIs to communicate with the platform. For details, see PHP SDK.

Application PHP SDK

Certificates

The following certificates are used when devices and applications need to verify IoTDA.

  • The certificates apply only to Huawei Cloud IoTDA and must be used together with the corresponding domain name.
  • CA certificates can no longer be used to verify server certificates upon expiration. Replace CA certificates before they expire to ensure that devices can connect to the IoT platform properly.
Table 1 Certificates

Certificate Package Name

Region and Edition

Certificate Type

Certificate Format

Description

Download Link

certificate

CN-Hong Kong, AP-Singapore, AP-Bangkok, AP-Jakarta, AF-Johannesburg, LA-Santiago, LA-Sao Paulo1, LA-Mexico City2, and ME-Riyadh

Device certificate

pem, jks, and bks

Used by a device to verify the platform identity. The certificate must be used together with the device access domain name.

Certificate file

certificate

CN-Hong Kong, AP-Singapore, AP-Bangkok, AP-Jakarta, AF-Johannesburg, LA-Santiago, LA-Sao Paulo1, LA-Mexico City2, and ME-Riyadh

Application certificate

pem, jks, and bks

Application access: HTTPS/AMQPS/MQTTS platform CA certificates

Certificate file