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- What's New
- Service Overview
- Getting Started
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User Guide
- Management Platform
- Developer Center
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Developer Guide
-
Product Development
- Obtaining Development Resources
- Creating a Project and Product
- Developing a Product Model
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Developing a Codec
- Development Guide
- Offline Development
- Codec Development Examples
-
Reference
- Message Processing Flow
- decode API Description
- Description of encode API
- getManufacturerId Interface Description
- getModel Interface Description
- Precautions on Interface Implementation
- Input/Output Format of the Codec Plug-In
- Implementation Sample Interpretation
- Appendix: Encryption Algorithms Supported by the JDK
- Developing an Application
- Developing a Device
- Self-Service Testing
- Product Release
- Device Interconnection
- Application Interconnection
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SDK Usage Guide on the Device Side
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LiteOS SDK Integration Development Guide
- Overview
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Processfor Connecting Devices to OceanConnect on the Device Side
- Preparations
- Entrypoint Function for LiteOS SDK Device-Cloud Interconnect Components
- Initializing LiteOS SDK Device-Cloud Interconnect Components
- Creating a Data Reporting Task
- Command Processing Function for LiteOS SDK Device-Cloud Interconnect Components
- Main Function Body for LiteOS SDK Device-Cloud Interconnect Components
- Data Structure
- Appendix 1 LWM2M
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LiteOS SDK Integration Development Guide
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SDK Usage Guide on the Application Side
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Huawei IoT Platform Java SDK Usage Guide
- Before You Start
- Requirements for the Development Environment
- Downloading Related Development Resources
- Importing the Java SDK Demo
- Initializing and Configuring Certificates
- Calling Service APIs
- Implementing Callback APIs and Making, Exporting, and Uploading a Callback Certificate
- Service API Calling Process and Precautions
- Testing the SDK
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Huawei IoT Platform Java SDK Usage Guide
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Product Development
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API Reference
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Northbound API Reference
- Overview
- API Usage Statement
- Secure Application Access
- Device Management
- Data Collection
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Subscription Management
- Subscribing to Service Data of the IoT Platform
- Subscribing to Management Data of the IoT Platform
- Querying a Subscription
- Querying Subscription in Batches
- Deleting a Subscription
- Deleting Subscriptions in Batches
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Push Notification
- Pushing Device Registration Notifications
- Pushing Device Binding Notifications
- Pushing Device Information Change Notifications
- Pushing Device Data Change Notifications
- Pushing Batch Device Data Change Notifications
- Pushing Device Service Capability Change Notifications
- Pushing Device Service Capability Addition Notifications
- Pushing Device Service Capability Deletion Notifications
- Pushing Device Deletion Notifications
- Pushing Device Acknowledgment Notifications
- Pushing Device Command Response Notifications
- Pushing Command Status Change Notifications
- Pushing Rule Event Notifications
- Pushing Device Shadow Status Change Notifications
- Pushing Software Upgrade Status Change Notifications
- Pushing Software Upgrade Result Notifications
- Pushing Firmware Upgrade Status Change Notifications
- Pushing Firmware Upgrade Result Notifications
- Command Delivery
- Batch Processing
- Device Group Management
- Device Upgrade
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Northbound Java SDK API Reference
- SDK Demo Architecture and Usage Guide
- SDK Initialization Configuration and Test
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Service API List
- Secure Application Access
- Device Management
- Batch Processing
- Subscription Management
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Message Push
- Pushing Device Registration Notifications
- Pushing Device Binding Notifications
- Pushing Device Information Change Notifications
- Pushing Device Data Change Notifications
- Pushing Batch Device Data Change Notifications
- Pushing Device Service Information Change Notifications
- Pushing Device Deletion Notifications
- Pushing Device Acknowledgment Notifications
- Pushing Device Command Response Notifications
- Pushing Device Event Notifications
- Pushing Device Model Addition Notifications
- Pushing Device Model Deletion Notifications
- Pushing Device Shadow Status Change Notifications
- Pushing Software Upgrade Status Change Notifications
- Pushing Software Upgrade Result Notifications
- Pushing Firmware Upgrade Status Change Notifications
- Pushing Firmware Upgrade Result Notifications
- Pushing NB-IoT Command Status Change Notifications
- Command Delivery (NB-IoT Commands)
- Command Delivery (Non-NB-IoT Commands)
- Data Collection
- Device Group Management
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Device Upgrade
- Querying a Version Package List
- Querying a Specified Version Package
- Deleting a Specified Version Package
- Creating a Software Upgrade Task
- Creating a Firmware Upgrade Task
- Querying the Result of a Specified Upgrade Task
- Querying Details About Subtasks of a Specified Upgrade Task
- Querying an Upgrade Task List
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Northbound PHP SDK API Reference
- SDK Demo Architecture and Usage Guide
- SDK Initialization Configuration and Test
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Service API List
- Secure Application Access
- Device Management
- Batch Processing
- Subscription Management
-
Message Push
- Pushing Device Registration Notifications
- Pushing Device Binding Notifications
- Pushing Device Information Change Notifications
- Pushing Device Data Change Notifications
- Pushing Batch Device Data Change Notifications
- Pushing Device Service Information Change Notifications
- Pushing Device Deletion Notifications
- Pushing Device Acknowledgment Notifications
- Pushing Device Command Response Notifications
- Pushing Device Event Notifications
- Pushing Device Model Addition Notifications
- Pushing Device Model Deletion Notifications
- Pushing Device Shadow Status Change Notifications
- Pushing Software Upgrade Status Change Notifications
- Pushing Software Upgrade Result Notifications
- Pushing Firmware Upgrade Status Change Notifications
- Pushing Firmware Upgrade Result Notifications
- NB-IoT Device Command Status Change Notification
- Command Delivery (NB-IoT Commands)
- Command Delivery (Non-NB-IoT Commands)
- Data Collection
- Device Group Management
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Device Upgrade
- Querying a Version Package List
- Querying a Specified Version Package
- Deleting a Specified Version Package
- Creating a Software Upgrade Task
- Creating a Firmware Upgrade Task
- Querying the Result of a Specified Upgrade Task
- Querying Details About Subtasks of a Specified Upgrade Task
- Querying an Upgrade Task List
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Northbound Python SDK API Reference
- SDK Demo Architecture and Usage Guide
- SDK Initialization Configuration and Test
-
Service API List
- Secure Application Access
- Device Management
- Batch Processing
- Subscription Management
-
Message Push
- Pushing Device Registration Notifications
- Pushing Device Binding Notifications
- Pushing Device Information Change Notifications
- Pushing Device Data Change Notifications
- Pushing Batch Device Data Change Notifications
- Pushing Device Service Information Change Notifications
- Pushing Device Deletion Notifications
- Pushing Device Acknowledgment Notifications
- Pushing Device Command Response Notifications
- Pushing Device Event Notifications
- Pushing Device Model Addition Notifications
- Pushing Device Model Deletion Notifications
- Pushing Device Shadow Status Change Notifications
- Pushing Software Upgrade Status Change Notifications
- Pushing Software Upgrade Result Notifications
- Pushing Firmware Upgrade Status Change Notifications
- Pushing Firmware Upgrade Result Notifications
- NB-IoT Device Command Status Change Notification
- Command Delivery (NB-IoT Commands)
- Command Delivery (Non-NB-IoT Commands)
- Data Collection
- Device Group Management
-
Device Upgrade
- Querying a Version Package List
- Querying a Specified Version Package
- Deleting a Specified Version Package
- Creating a Software Upgrade Task
- Creating a Firmware Upgrade Task
- Querying the Result of a Specified Upgrade Task
- Querying Details About Subtasks of a Specified Upgrade Task
- Querying an Upgrade Task List
- AgentLite API Reference (Android)
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AgentLite API Reference (C)
- Before You Start
- API Description
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Common Data Structures
- ST_IOTA_DEVICE_INFO Structure
- IEs in EN_IOTA_BIND_IE_TYPE Messages
- Enumerated Values of the EN_IOTA_BIND_RESULT_TYPE Parameter
- IEs in EN_IOTA_LGN_IE_TYPE Messages
- Enumerated Values of the EN_IOTA_LGN_REASON_TYPE Parameter
- Enumerated Values of the EN_IOTA_CFG_TYPE Parameter
- IEs in EN_IOTA_HUB_IE_TYPE Messages
- Enumerated Values of the EN_IOTA_HUB_RESULT_TYPE Parameter
- IEs in EN_IOTA_DATATRANS_IE_TYPE Messages
- IEs in EN_IOTA_DEVUPDATE_IE_TYPE Messages
- Data Types
- AgentLite API Reference (Java)
- MQTT Interface Reference
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Northbound API Reference
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FAQs
- FAQs
- Specifications
- Product Use
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Secondary Development
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FAQs About Product Development
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Profile Definition
- How to Develop a Profile
- Upload Is Unavailable When Uploading a Profile to the Developer Center
- Incorrect File Format Is Displayed When Uploading a Profile to the Developer Center
- Message Is Displayed Indicating That the Manufacturer ID and Device Model Exist When Uploading a Profile to the Developer Center
- How to Select a Data Type When Developing a Profile Online
- Profile Cannot Be Edited
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Plug-In Development
- How to Develop Codecs
- Failed to Deploy a Plug-in That Is Developed Online
- What Is the Code Rule for Fields of the string and varstring Types
- What Is the Code Rule for Fields of the array and variant Types
- Whether Plug-Ins That Are Developed Online Support Transparent Transmission
- How to Use messageId During Online Codec Development
- How to Configure a Command Delivery Response During Online Codec Development
- Failed to Deploy a Plug-in That Is Developed Offline
- Failed to Upload a Plug-in That Is Developed Offline
- Plug-In Package Developed Offline Has Been Checked But Cannot Be Found When Uploading to the IoT Platform
- Codec Exception Occurs After a Plug-In Package Developed Offline That Has Been Checked Is Uploaded to the IoT Platform
- Offline Signature Fails
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Device Development
- Registered Devices Cannot Connect to the IoT Platform
- Message 513 Is Reported When Devices Are Connected to the IoT Platform
- DTLS Encryption Algorithms Supported by the IoT Platform
- What Does CTNB Mean
- How to Select PSM, DRX, and eDRX
- Devices Cannot Receive Commands from the IoT Platform
- IoT Platform Does Not Receive Data Reported by Devices
- Historical Data Does Not Contain Data Reported By Devices While No Error Occurs
- Duration for Devices to Receive Commands
- Devices Fail to Receive Data Reporting Responses
- Data Reporting Is Successful at One Position But Fails at Another Position
- Command Status Is Not Changed to Successful After a Device Reports the Command Execution Result
- Whether the IoT Platform Can Switch Between the Big-Endian and Little-Endian
- Commands Fail to Be Delivered When a Device in DRX Mode Does Not Report Data in One to Two Days
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Profile Definition
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FAQs About Application Development
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Calling APIs
- Authentication API of the IoT Platform Is Successfully Called Locally But Fails to Be Called on Application Servers
- Error Occurs When an NA Calls an API
- Online Application Simulator Fails to Deliver Commands
- Command Is Successfully Delivered Using the Simulator But Fails to Be Delivered by Calling the API
- Application Server Fails to Deliver Commands and Receives Error Code 403
- How Does an Application Server Deliver a Cache Command
- What Does an Expired Command Mean
- Does the IoT Platform Support Command Resending
- What Does a Timeout Command Mean
- Can the IoT Platform Deliver Commands in Batches
- Are the APIs of the IoT Platform Called Only Using Java
- What Are the Command States on the IoT Platform
- Failed to Call the Calling the Registering Directly Connected Devices API
- APIs Fail To Be Called After a Period of Time While Parameters Remain Unchanged
- Commands Fail to Be Sent After a Period of Time While the Previous Commands Are Successfully Sent
- Historical Data Is Not Returned When the Querying Historical Device Data API Is Called
- Devices Registered with the IoT Platform Are Deleted After a Period of Time
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Subscription and Push
- Invalid Callback Address Occurs When Calling the Subscription API
- How to Obtain the subscriptionId When Calling the Querying Subscription in Batches API
- Application Server Fails to Receive Data Pushed by the IoT Platform
- How Do I Export the HTTPS Push Certificate
- Difference Between deviceDatachanged and deviceDataschanged
- How Does an Application Server Obtain the IMEI of Devices
- Application Server Receives Data But an Error Is Displayed on the IoT Platform
- Push Messages May Fail to Be Sent to Application Servers
- How Does an Application Servers Obtain The Address Used by the IoT Platform to Push Messages
- Does the IoT Platform Supports Re-push
- How Does an Application Server Receive a Command Status Change Notification
- Application Servers That Have Subscribed to Confirmation Notifications and Command Response Notifications Fail to Receive Push Messages
- Does the IoT Platform Support Only HTTPS Callback Addresses
- Can the IoT Platform Push Data Reported by Different Devices Under the Same Application to Two Servers
- Can a Subscription Address Be a Domain Name
- Can a Callback Address Be Changed
- How Do I Obtain the Callback URL When Calling the Subscription API
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Calling APIs
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FAQs About Software/Firmware Upgrade
- What Is Software/Firmware Upgrade
- Can IoT Platform Download Software/Firmware Packages From Third-party Servers
- Can the Target Version Be Earlier Than the Source Version?
- How Do I Obtain Software/Firmware Packages and Their Version Numbers
- Software/Firmware Upgrade Task Is Ended Immediately After Being Created
- What Is the Source Version Required for Uploading a Firmware Package on the Management Portal
- When Reporting Data, Devices Receive the Software/Firmware Version Query Command from the IoT Platform
- Are Services Interrupted During the Software/Firmware Upgrade
- What Are Common Software/Firmware Upgrade Errors
- Retry When Some Devices in the Group Failed to Be Upgraded
- Is Resumable Transmission Supported When the IoT Platform Sends Software/Firmware Packages to Devices
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Others
- Does the IoT Platform Support Device Registration in Batches
- Does the IoT Platform Perform Flow Control on Applications and Devices
- How Does an Application Server Obtain Data Reported by Devices to the IoT Platform
- Is the Maximum Number of Applications and Devices Restricted on the IoT Platform
- Why Is an Online Device Changed to an Abnormal or Offline State After a Period of Time
- Are Command Delivery and Data Reporting Successful After a Device Becomes Abnormal or Offline
- How Long Does a Device Receive an Immediately-Delivered Command in eDRX Mode
- How Long Is Data Stored on the IoT Platform
- Can Multiple Devices Use One IMEI
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FAQs About Product Development
- General Reference
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Introduction to the Developer Center
As a one-stop IoT development tool platform, the Developer Center provides a variety of capabilities, such as product development, application development, self-service testing, and product release. It also provides resources such as development guides and API references to help developers improve integration development efficiency and shorten the construction period of IoT solutions.
Architecture of the Developer Center
Functions of the Developer Center
- Product Development: provides E2E development guides for profile definition, codec development, and product testing, facilitating quick launch of IoT products.
- Application Development: provides interconnection information, subscription tests, and application tests, helping developers develop and test applications and improve the independence of application development.
- Self-Service Testing: automatically tests product information, product models, and codecs, generates test reports, and checks whether the products meet the release standards.
- Document Center: provides online resources such as user manuals, development guides, and API references to provide real-time help.
- Product Release: interconnects with the Operations Center, enabling developers to apply for product release by one click after a product is tested in the Developer Center.
Related Concepts
- IoT Platform
The IoT platform integrates data, device, and operations management to implement unified and secure network access, flexible device adaptation, and data collection and analysis, thereby creating new values. The IoT platform provides open APIs for various industries to help partners quickly develop IoT service applications and meet personalized service requirements of customers. The IoT platform provides access for a variety of devices in wireless and wired access mode.
As a one-stop development tool platform based on the open capabilities of the IoT platform, the Developer Center helps developers quickly build an IoT platform-based solution.
- Project
A project refers to the resource space of the IoT platform. Developers need to create independent projects based on their own industries before developing IoT products and applications in the project space.
- Product
A collection of devices with the same capabilities or features is called a product. In addition to physical devices, a product includes product information, product models (profiles), codecs, and test reports generated during IoT capability building.
- Product Model
A product model (also called profile) is used to describe the capabilities and features of a device. Developers construct an abstract model of a device by defining a profile file on the IoT platform so that the IoT platform can understand the services, properties, and commands supported by the device.
- Software Development Kit (SDK)
SDK is a set of development tools used by software engineers to create application software for specific software packages, software frameworks, hardware platforms, and operating systems. Generally, the SDK is used in developing applications on the Windows platform. SDK can provide API files for a programming language or complex hardware that communicates with an embedded system.
The IoT platform provides developers with SDK on the application side and device side to help them quickly integrate applications or devices.
- Message Queue Telemetry Transport (MQTT)
MQTT is an IoT transmission protocol designed for lightweight release/subscription message transmission. It aims to provide reliable network services for IoT devices in low-bandwidth and unstable network environments.
MQTTS refers to the combination of MQTT and SSL/TLS. The SSL and TLS protocols are used for encrypted transmission.
- Constrained Application Protocol (CoAP)
CoAP is a software protocol designed to enable simple devices to perform interactive communication on the Internet.
CoAPS refers to CoAP over DTLS. The DTLS protocol is used for encrypted transmission.
- Lightweight Machine to Machine (LWM2M)
LWM2M is an IoT protocol defined by Open Mobile Alliance (OMA). It is mainly applied to NB-IoT devices with limited resources (such as limited storage and power supply).
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