Using bafayun to control the computer

Official website address https://cloud.bemfa.com/ 

The address above has a detailed description . If you have a server, you can also use various voice platforms to provide SDK To access . I have only one tmall elf myself , So the tmall elf I connected here , There is no server, so use off the shelf . It's bafayun above , Of course, there are many such platforms . I'm a random choice .

For Bafa cloud, access is very simple .

First step ： Pay attention to a bafayun account

The second step ： After logging in, find the console , Here's the private key . This is the verification during access .

The third step ： Create a theme , Of course, it's not what you want to build , Bafayun IOT platform is connected to tmall Genie control by default , Only the following types of devices are supported ： Socket 、 Light bulb: 、 Fan 、 sensor 、 Air conditioner 、 switch 、 The curtain .

Users can choose whether to access tmall elf or not , According to the subject name .

When the last three of the subject names are 001 It is a socket device when .

When the last three of the subject names are 002 Light bulb equipment .

When the last three of the subject names are 003 For fan equipment .

When the last three of the subject names are 004 It is a sensor device .

When the last three of the subject names are 005 Air conditioning equipment when .

When the last three of the subject names are 006 For switchgear .

When the last three of the subject names are 009 Curtain equipment .

When the subject name is other , The default is normal topic node , Will not sync to tmall elf app.

Step four ： If it's above and equipment , Turn on the phone of tmall elf API, Search for   Bafayun . Enter the previously registered account and password to associate the device to tmall elf .

Step five ： Write code ：

Because there is no computer , So here's a stupid way , After the tmall elf is associated with the device, the device name can be set , In this way, we name it Computer   Let's say this to tmall   xxx Computer , You can control the computer , It won't be too embarrassing .

The curtains I built here , So it can control the switch and opening and closing . It's no use driving , So I realized shutdown and volume control , If you use a computer Watch a movie or something , If you don't want to get out of bed in winter, you can turn it off . Of course, you can also combine multiple groups of devices and take different names to control it .

Code I use TCP The way , No encryption . The data it transmits is a string . First connect to bemfa.com port 8344.

After the connection is successful, send the command "cmd=1&uid=" + m_uid + "&topic=" + m_topic + "\r\n"  Subscribe to device messages .uid Is the private key of the console ,topic Is the topic name you created ,, Of course, you can subscribe to multiple device formats here  cmd=1&uid=7d54f85af42976ee3c2693e6xxxxxxxx&topic=light002,outlet001,topic003\r\n This format can be subscribed up to 8 Devices . After sending, receive the server message , return cmd=1&res=1 The subscription is successful . At this time, you can receive the message as long as you send it to the tmall elf voice control device .

Field description

cmd: For message type

cmd=1  Subscription message when , When the device sends this message type once , Then you can receive a message sent to the subject 

cmd=2  When, it is a news release , Send a message to the device subscribing to the topic 

cmd=3  It's a subscription message , and cmd=1 identical , And will pull a message that has been sent 

cmd=7  Is to get time , Get the current Beijing time 

cmd=9  For the will message , Pull a message that has been sent 

uid: User private key

 Available on the console 

topic： User themes

 You can create themes in the console , The format is English or number , Equivalent to equipment identification 

msg: For the body of the message

 Data that the user wants to send to a topic 

Get time instruction description

type=1  Get the current date and time , for example ：2021-06-11 17:20:54

type=2  Get the current time , for example ：17:20:54

type=3  Get the current timestamp , for example ：1623403325

Symbol description

\r\n:  Replace carriage return , Every command needs to be followed by a carriage return line feed 
&:  For the connector , Use... Between fields '&' Isolation 

Heartbeat description

 Send arbitrary data   For heartbeat messages , Including the above instructions is also a heartbeat , But end with carriage return and line feed .
 The heartbeat message tells the server that the device is still online , can 30 Seconds to send , End with \r\n ending .