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- What's New
- Product Bulletin
- Service Overview
- Billing
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Getting Started
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Quick Device Access - Property Reporting and Command Receiving
- Subscribing to IoTDA
- Connecting a Smart Smoke Detector to the Platform (Quick Usage)
- Registering a Simulated Smart Street Light Device
- Using MQTT.fx to Simulate Communication Between the Smart Street Light and the Platform
- Using a Virtual Smart Street Light to Communicate with the Platform (Java SDK)
- Using a Virtual Smart Street Light to Communicate with the Platform (C SDK)
- Quick Device Access - Message Sending and Receiving
- Quick Application Access
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Quick Device Access - Property Reporting and Command Receiving
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User Guide
- Overview
- IoTDA Instances
- Resource Spaces
- Device Access
- Message Communications
- Device Management
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Rules
- Overview
- Data Forwarding Process
- SQL Statements
- Connectivity Tests
- Data Forwarding to Huawei Cloud Services
- Data Forwarding to Third-Party Applications
- Data Forwarding Channel Details
- Data Forwarding Stack Policies
- Data Forwarding Flow Control Policies
- Abnormal Data Target
- Device Linkage
- Monitoring and O&M
- Granting Permissions Using IAM
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Best Practices
- Introduction
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Device Access
- Developing an MQTT-based Simulated Smart Street Light Online
- Developing a Smart Street Light Using NB-IoT BearPi
- Developing a Smart Smoke Detector Using NB-IoT BearPi
- Connecting and Debugging an NB-IoT Smart Street Light Using a Simulator
- Developing a Protocol Conversion Gateway for Access of Generic-Protocol Devices
- Connecting a Device That Uses the X.509 Certificate Based on MQTT.fx
- Connecting to IoTDA Based on the BearPi-HM_Nano Development Board and OpenHarmony 3.0
- Testing MQTT Performance Using JMeter
- Device Management
- Data Forwarding
- Device Linkage
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Developer Guide
- Before You Start
- Obtaining Resources
- Product Development
- Development on the Device Side
- Development on the Application Side
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API Reference
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API Reference on the Application Side
- Before You Start
- Calling APIs
- API Overview
-
API
- Product Management
- Device Management
- Device Message
- Device Command APIs
- Device Property
- AMQP Queue Management
- Access Credential Management
- Data Forwarding Rule Management
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Transition Data
- Push a Device Status Change Notification
- Push a Device Property Reporting Notification
- Push a Device Message Status Change Notification
- Push a Batch Task Status Change Notification
- Push a Device Message Reporting Notification
- Push a Device Addition Notification
- Push a Device Update Notification
- Push a Device Deletion Notification
- Push a Product Addition Notification
- Push a Product Update Notification
- Push a Product Deletion Notification
- Push an Asynchronous Device Command Status Change Notification
- Rule Management
- Device Shadow
- Group Management
- Tag Management
- Instance Management
- Resource Space Management
- Batch Task
- Device CA Certificate Management
- OTA Upgrade Package Management
- Message Broadcasting
- Device Tunnel Management
- Stack policy management
- Flow control policy management
- Device Proxy
- Device Policy Management
- Bridge Management
- Pre-provisioning Template Management
- Custom Authentication
- Codec Function Management
- Permissions and Supported Actions
- Examples
- Appendix
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MQTT or MQTTS API Reference on the Device Side
- Before You Start
- Communication Modes
- Topics
- Device Connection Authentication
- Device Commands
- Device Messages
- Device Properties
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Gateway and Child Device Management
- Platform Notifying a Gateway of New Child Device Connection
- Platform Notifying a Gateway of Child Device Deletion
- Gateway Synchronizing Child Device Information
- Gateway Updating Child Device Status
- Responding to a Request for Updating Child Device Statuses
- Gateway Requesting for Adding Child Devices
- Platform Responding to a Request for Adding Child Devices
- Gateway Requesting for Deleting Child Devices
- Platform Responding to a Request for Deleting Child Devices
- Software and Firmware Upgrade
- File Upload and Download
- Device Time Synchronization
- Device Reporting Information
- Device Log Collection
- Remote Configuration
- Device Tunnel Management
- HTTPS API Reference on the Device Side
- LwM2M API Reference on the Device Side
- Security Tunnel WebSocket API Reference
- Module AT Command Reference
- Change History
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API Reference on the Application Side
- SDK Reference
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FAQs
- Top FAQs
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Solution Consulting
- In What Scenarios Can the IoT Platform Be Applied?
- What Are the Changes Brought by the Integration of IoT Device Management and IoTDA?
- Can I Enable IoTDA for IAM Users or Sub-Projects?
- Which Regions of Huawei Cloud Are Supported by the IoT Platform?
- Does Huawei Provide Modules, Hardware Devices, and Application Software?
- What Should I Do If I Want to Call an API But Have No Permissions to Do So as an IAM User? (Is It Edition-specific?)
- Why Was I Prompted to Grant Security Administrator Permissions When I Create a Rule or Set Resource File Storage?
- Which Resource Space Will Be Set As Default on the IoT Platform?
- How Does IoTDA Obtain Device Data?
- Is There Any Limitation on the Number of Resource Spaces and Devices I Can Add on the IoT Platform?
- Does the IoTDA Support Device Registration in Batches?
- Are There Any Limitations on the Use of the IoT Platform?
- What DTLS Encryption Algorithms Are Supported by the IoT Platform?
- Does the IoT Platform Support Conversion Between Big-Endian and Little-Endian for Binary Data?
- What Is NB-IoT?
- What Are the Components of the IoT Platform and What Hardware Architectures Does It Support?
- How Do I Obtain the Platform Access Address?
- Device Integration
- IoT Device SDKs
- LwM2M/CoAP Device Access
- MQTT-based Device Access
- Products Models
- Message Communications
- Subscription and Push
- Codecs
- OTA Upgrades
- Application Integration
- General Reference
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Resource Spaces
Resource space is a space allocated for your applications. Resources (such as products and devices) created on the platform must belong to a resource space. You can use the resource space for domain-based management.
- You can create a maximum of 10 resource spaces. By default, the space automatically created by the platform when the IoTDA service is subscribed to for the first time is the default resource space.
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An app_id, which is a unique identifier of a resource space, is allocated by the platform when the resource space is created. app_id is also used in API calls.
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After a resource space is created, you can view its app_id in the resource space.
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The default resource space cannot be deleted. After a resource space is deleted, all resources in the space, such as devices, products, and subscription data, are deleted from the platform and cannot be restored. Exercise caution when deleting a resource space.
Creating a Resource Space
When you subscribe to IoTDA for the first time, the platform automatically creates the default resource space. Each instance has only one default resource space, which cannot be deleted.
You can create a product or register a device in the default resource space. You can also perform the following steps to create a resource space:

If you subscribed to IoTDA before 00:00 on Apr 27, 2020, see Which Resource Space Will Be Set As Default on the IoT Platform?.
- Access the IoTDA service page and click Access Console.
- In the navigation pane, choose IoTDA Instances, and click the target instance card.
- In the navigation pane, choose Resource Spaces. On the displayed page, click Create Resource Space. On the displayed dialog box, set Space Name and click OK.
The resource space name must be unique under the account.
Figure 2 Resource space - Creating a resource space
Querying a Resource Space
After a resource space is created, choose Resource Spaces and click View to check the app ID (app_id), creation time, number of products, number of devices, number of groups, and number of created rules under the resource space. To create products, devices, groups, and rules in another resource space, switch to the target resource space.

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