API Overview

Device Authentication

API	Description
Authenticating a Device	This API is used to authenticate a device. Connections can be established between devices and IoTDA after successful authentication. After the authentication is successful, IoTDA returns an access token. An access token is required when APIs for property reporting and message reporting are called. If an access token expires, you need to authenticate the device again to obtain an access token. If you obtain a new access token before the old one expires, the old access token will be valid for 30 seconds before expiration.

API

Description

This API is used to authenticate a device. Connections can be established between devices and IoTDA after successful authentication. After the authentication is successful, IoTDA returns an access token. An access token is required when APIs for property reporting and message reporting are called. If an access token expires, you need to authenticate the device again to obtain an access token. If you obtain a new access token before the old one expires, the old access token will be valid for 30 seconds before expiration.

Device Message Reporting

API	Description
Reporting a Device Message	This API is used for a device to report custom data to IoTDA, which then forwards reported messages to an application or other Huawei Cloud services for storage and processing.

Device Reporting Properties

API	Description
Reporting Device Properties	This API is used by a device to report property data in the format defined in the product model to IoTDA.
Gateway Reporting Child Device Properties	This API is used to report device data in batches to IoTDA. A gateway can use this API to report the property data of a maximum of 50 child devices at the same time.