Help Center/ ROMA Connect/ Developer Guide (ME-Abu Dhabi Region)/ Developer Guide for Device Integration/ MQTT Topic Specifications/ Before You Start
Updated on 2022-12-05 GMT+08:00
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Before You Start

Currently, CoAP supports only command delivery and data reporting of directly connected devices.

  • When the IoT platform functions as the message subscriber, it has subscribed to related topics by default. The IoT platform can receive messages sent by devices to the corresponding topics.
  • When a device functions as a message subscriber, the device needs to subscribe to related topics first so that the device can receive messages sent by the IoT platform to the corresponding topics. The device determines the topics to be subscribed to based on the specific business requirements.

Topic

Supported Protocol

Publisher

Subscriber

Function

/v1/devices/{gatewayId}/topo/add

MQTT

Edge device

IoT platform

The edge device adds a subdevice.

/v1/devices/{gatewayId}/topo/addResponse

IoT platform

Edge device

The IoT platform returns a response for adding a subdevice.

/v1/devices/{gatewayId}/topo/update

Edge device

IoT platform

The edge device updates the subdevice status.

/v1/devices/{gatewayId}/topo/updateResponse

IoT platform

Edge device

The IoT platform returns a response for updating the subdevice status.

/v1/devices/{gatewayId}/topo/delete

IoT platform

Edge device

The IoT platform deletes a subdevice.

/v1/devices/{gatewayId}/topo/query

Edge device

IoT platform

The edge device queries gateway information.

/v1/devices/{gatewayId}/topo/queryResponse

IoT platform

Edge device

The IoT platform returns a response for querying gateway information.

/v1/devices/{gatewayId}/command

IoT platform

Edge device

The IoT platform delivers a command to a device or an edge device.

/v1/devices/{gatewayId}/commandResponse

Edge device

IoT platform

The edge device returns a command response to the IoT platform.

/v1/devices/{gatewayId}/datas

Edge device

IoT platform

The edge device reports data.

In the preceding table, {gatewayId} indicates the device ID. Specifications of previous sites are inherited by delete, while specifications are not provided for deleteResponse now.