EMQPUBOPEN – create a publish message topic

Create and view publish message topics, which will enable you to publish data to things in AWS IoT Console.

Type Syntax Response

Test

Type	Syntax	Response
Test	`AT+EMQPUBOPEN=?`	OK +EMQPUBOPEN:(0-7),<topic>
Read	`AT+EMQPUBOPEN?`	List of publish topics. OK +EMQPUBOPEN topics: 0 <publishtopic0>/<AWSthingName> 1 <publishtopic1>/<AWSthingName> 2 null 3 null 4 null 5 null 6 null 7 null where: 0, 1, and so on are the index numbers <publishtopicn> is the unique name for each publish index <AWSthingName> is the unique name for the thing that you defined in AWS. For more information, see Available files and sizes. The AWSthingName has a maximum length of 128 characters. The sum of `<publishtopicn>` and <AWSthingName> must not exceed 255 characters. Escaped characters count as 1 character each. null is an empty publish topic
Write	AT+EMQPUBOPEN=(`0-7`),<`topic`> where: `(0-7)` is a publish index number in the range from 0, up to and including 7. `<topic>` is the publish topic title with a maximum length of 255 characters (including /AWS thingName or /IMEI). Topic titles cannot contain special characters. "`<topic>`" can exist within quotation marks.	OK +EMQPUBOPEN: (0-7),<status> where (0-7) is the publish index number you selected from the range <status> is: 0 – successfully installed the publish topic -2 – socket already in use or ERROR – the command failed

AT+EMQPUBOPEN=?

+EMQPUBOPEN:(0-7),<topic>

Read

AT+EMQPUBOPEN?

List of publish topics.

+EMQPUBOPEN topics:

0 <publishtopic0>/<AWSthingName>

1 <publishtopic1>/<AWSthingName>

2 null

3 null

4 null

5 null

6 null

7 null

where:

0, 1, and so on are the index numbers
<publishtopicn> is the unique name for each publish index
<AWSthingName> is the unique name for the thing that you defined in AWS. For more information, see Available files and sizes.

The AWSthingName has a maximum length of 128 characters. The sum of <publishtopicn> and <AWSthingName> must not exceed 255 characters. Escaped characters count as 1 character each.
null is an empty publish topic

Write

AT+EMQPUBOPEN=(0-7),<topic>

where:

(0-7) is a publish index number in the range from 0, up to and including 7.
<topic> is the publish topic title with a maximum length of 255 characters (including /AWS thingName or /IMEI). Topic titles cannot contain special characters.
"<topic>" can exist within quotation marks.

+EMQPUBOPEN: (0-7),<status>

where

(0-7) is the publish index number you selected from the range
<status> is:
- 0 – successfully installed the publish topic
- -2 – socket already in use

ERROR – the command failed

AT+EMQPUBOPEN=1,PublishToCloud1

+EMQPUBOPEN: 1,0

AT+EMQPUBOPEN?