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          • Connecting to IoTDA Based on the BearPi-HM_Nano Development Board and OpenHarmony - IoT Device Access

            Connecting to IoTDA Based on the BearPi-HM_Nano Development Board and OpenHarmony - IoT Device Access

            Node ID Set this parameter to the IMEI, MAC address, or serial number of the device. If the device is not a physical one, set this parameter to a custom character string of 4 to 64 characters. Only letters, digits, underscores (_), and hyphens (-) are allowed.

            Help > IoT Device Access > Best Practices > Device Access
          • Developing an MQTT-based Simulated Smart Street Light Online - IoT Device Access

            Developing an MQTT-based Simulated Smart Street Light Online - IoT Device Access

            The value usually consists of a device's product ID and node ID which are separated by an underscore (_). Device type: The value is fixed at 0, indicating a device ID.

            Help > IoT Device Access > Best Practices > Device Access
          • Query a Command with a Specific ID - IoT Device Access

            Query a Command with a Specific ID - IoT Device Access

            Only letters, digits, underscores (_), and hyphens (-) are allowed. Request Parameters Table 2 Request header parameters Parameter Mandatory Type Description Instance-Id No String Parameter description: instance ID.

            Help > IoT Device Access > API Reference > API Reference on the Application Side > API > Device Command APIs > Asynchronous Device Command
          • Deliver a Command to a Device - IoT Device Access

            Deliver a Command to a Device - IoT Device Access

            Only letters, digits, underscores (_), and hyphens (-) are allowed. Request Parameters Table 2 Request header parameters Parameter Mandatory Type Description Instance-Id No String Parameter description: instance ID.

            Help > IoT Device Access > API Reference > API Reference on the Application Side > API > Device Command APIs > Synchronous Device Command
          • Deliver an Asynchronous Command - IoT Device Access

            Deliver an Asynchronous Command - IoT Device Access

            Only letters, digits, underscores (_), and hyphens (-) are allowed. Request Parameters Table 2 Request header parameters Parameter Mandatory Type Description Instance-Id No String Parameter description: instance ID.

            Help > IoT Device Access > API Reference > API Reference on the Application Side > API > Device Command APIs > Asynchronous Device Command
          • Developing a Product Model Offline - IoT Device Access

            Developing a Product Model Offline - IoT Device Access

            Name a device capability profile (.json file) in the format of devicetype-capability.json. Name a service capability profile (.json file) in the format of servicetype-capability.json. The manufacturer ID must be unique in different product models and can only be in English.

            Help > IoT Device Access > Developer Guide > Development on the Device Side > Product Development > Developing a Product Model
          • Connecting a Smart Smoke Detector to the Platform (Quick Usage) - IoT Device Access

            Connecting a Smart Smoke Detector to the Platform (Quick Usage) - IoT Device Access

            Connecting a Smart Smoke Detector to the Platform (Quick Usage) Overview You can use device data collection and command receiving with a Windows or Linux PC as a virtual device.

            Help > IoT Device Access > Getting Started > Quick Device Access - Property Reporting and Command Receiving
          • Query a Device Shadow - IoT Device Access

            Query a Device Shadow - IoT Device Access

            The desired properties can be delivered only when they have been defined in the product model and method is specified as W. Restrictions: Keys in the device shadow JSON file cannot contain periods (.), dollar signs ($), and the null character (hexadecimal ASCII code 00).

            Help > IoT Device Access > API Reference > API Reference on the Application Side > API > Device Shadow
          • Reset a Device Fingerprint - IoT Device Access

            Reset a Device Fingerprint - IoT Device Access

            Only letters, digits, underscores (_), and hyphens (-) are allowed. Request Parameters Table 2 Request header parameters Parameter Mandatory Type Description Instance-Id No String Parameter description: instance ID.

            Help > IoT Device Access > API Reference > API Reference on the Application Side > API > Device Management
          • Reset a Device Secret - IoT Device Access

            Reset a Device Secret - IoT Device Access

            Only letters, digits, underscores (_), and hyphens (-) are allowed. force_disconnect No Boolean Parameter description: whether to forcibly disconnect a device. Only long-connection devices are supported.

            Help > IoT Device Access > API Reference > API Reference on the Application Side > API > Device Management
          • Query a Device - IoT Device Access

            Query a Device - IoT Device Access

            Only letters, digits, underscores (_), periods (.), and hyphens (-) are allowed. tag_value String Parameter description: tag value. Value: The value can contain a maximum of 128 characters. Only letters, digits, underscores (_), periods (.), and hyphens (-) are allowed.

            Help > IoT Device Access > API Reference > API Reference on the Application Side > API > Device Management
          • Push a Device Property Reporting Notification - IoT Device Access

            Push a Device Property Reporting Notification - IoT Device Access

            If the device is an indirectly connected device, the gateway ID is the device ID of the directly connected device (that is, the gateway) with which it associates.

            Help > IoT Device Access > API Reference > API Reference on the Application Side > API > Transition Data
          • Basic Concepts - IoT Device Access

            Basic Concepts - IoT Device Access

            Device CA certificate A certificate issued by a certification authority (CA) such as VeriSign, Symantec, and GlobalSign and used to verify the identity between the server and client during HTTPS link establishment.

            Help > IoT Device Access > Service Overview
          • Modify Device Properties - IoT Device Access

            Modify Device Properties - IoT Device Access

            Only letters, digits, underscores (_), and hyphens (-) are allowed. project_id Yes String Parameter description: project ID. For details about how to obtain the project ID, see Obtaining a Project ID.

            Help > IoT Device Access > API Reference > API Reference on the Application Side > API > Device Property
          • LwM2M/CoAP Access - IoT Device Access

            LwM2M/CoAP Access - IoT Device Access

            LwM2M/CoAP Access Introduction Lightweight Machine to Machine (LwM2M), proposed by the Open Mobile Alliance (OMA), is a lightweight, standard, and universal IoT device management protocol that can be used to quickly deploy IoT services in client/server mode.

            Help > IoT Device Access > Developer Guide > Development on the Device Side
          • Modify a Device - IoT Device Access

            Modify a Device - IoT Device Access

            Only letters, digits, underscores (_), periods (.), and hyphens (-) are allowed. tag_value String Parameter description: tag value. Value: The value can contain a maximum of 128 characters. Only letters, digits, underscores (_), periods (.), and hyphens (-) are allowed.

            Help > IoT Device Access > API Reference > API Reference on the Application Side > API > Device Management
          • Forwarding Data to MySQL for Storage - IoT Device Access

            Forwarding Data to MySQL for Storage - IoT Device Access

            Parameter Description Forwarding Target Select MySQL (RDS). Database Instance Address Enter the IP address (or port number) for connecting the database instance. Database Name Enter the name of the destination database in the database instance.

            Help > IoT Device Access > User Guide > Rules > Data Forwarding to Huawei Cloud Services
          • Query a Product - IoT Device Access

            Query a Product - IoT Device Access

            Only letters, digits, and special characters (_?'#().,&%@!

            Help > IoT Device Access > API Reference > API Reference on the Application Side > API > Product Management
          • Query Device Properties - IoT Device Access

            Query Device Properties - IoT Device Access

            Only letters, digits, underscores (_), and hyphens (-) are allowed. project_id Yes String Parameter description: project ID. For details about how to obtain the project ID, see Obtaining a Project ID.

            Help > IoT Device Access > API Reference > API Reference on the Application Side > API > Device Property
          • Modify a Product - IoT Device Access

            Modify a Product - IoT Device Access

            Only letters, digits, spaces, and special characters (_?'#().,;&%@!-:$![]~/) are allowed.

            Help > IoT Device Access > API Reference > API Reference on the Application Side > API > Product Management
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