Onenet Internet of things platform - the console sends commands to mqtt product devices

Subscribe to system commands topic

$sys/{
    pid}/{
    device-name}/cmd/request/{
    cmdid}

topic in {cmdid} As a variable , Unique for each command id, You can subscribe through wildcards , such as ：$sys/{pid}/{device-name}/cmd/request/+, perhaps $sys/{pid}/{device-name}/cmd/#

open MQTT.fx, Connecting device , choice Subscribe term , Enter subscription topic name . My is $sys/480701/yuyun-test/cmd/# Pictured ：

The console issues a command

open onenet Platform MQTT Internet of things Suite , As shown in the figure below Where to find Issue order

Enter the command content and timeout , Click on send out

MQTT The simulation tool will receive a topic news , As shown in the figure below

The figure shows the device receiving the command topic by ：

$sys/480701/yuyun-test/cmd/request/7e0bf5f6-e80d-419b-a3e8-01b704f06e3d

Analog device response

The answer is topic The order is ：

$sys/{
    pid}/{
    device-name}/cmd/response/{
    cmdid}

Use MQTT.fx Post a message to the corresponding topic, Analog device response

The answer is topic The one who received the order in the above figure , Will be one of the request Change it to response, And then in Publish Add the content that needs to be answered . As shown in the figure below ：

And then back to Subscribe Check the received messages ： Use MQTT.fx After the analog device answers , From the system topic Receiving a message indicates , The device responded successfully . As shown in the figure below ：

At the same time, the command tool on the platform page will display the response result of the command , As shown in the figure below ：

among cmd_resp": “ytW1vaOh” Answer the message for the device “ received ！” Of base64 Coding form , Use base64 Decrypted as GB2312 You can see the encoding format ：