SIM7020 Series_AT Command Manual_V1.05
Reference
Defined Values
<mqtt_id>
<used_state>
<server>
<port>
<command_timeout_ms>
<bufsize>
Integer, MQTT id
The used result of mqtt_id
0 Not used
1 Used
String, null or server IP address(or MQTT server name). Max length is 50.
String, MQTT server port, can be from 0 to 65535.
Integer, AT command timeout (ms), can be from 0 to 60000.
Integer, buffer size, can be from 20 to 1132.
Example
AT+CMQTTSNEW=?
+CMQTTSNEW: "Server name or IP address",(0-65535),(0-60000),(20-1132)
OK
AT+CMQTTSNEW?
+CMQTTSNEW: 0,0,null
OK
NOTE
AT+CSETCA should be set before this command, we need to set the certificates first!
11.2.11 AT+CMQTTSNEWEXT NEW a MQTTS Instance by Multi Packages for a Long
Size Command
AT+CMQTTSNEWEXT New a MQTTS Instance by Multi Packages for a Long Size
Command
Read Command
AT+CMQTTSNEWEXT?
Response
+CMQTTSNEWEXT: <mqtt_id>,<used_state>,<server> www.simcom.com 248 / 331
SIM7020 Series_AT Command Manual_V1.05
Write Command
AT+CMQTTSNEWEXT=<flag
>,<total_len>,<len>,<server
>,<port>,<command_timeou t_ms>,<bufsize>,<server_ce rt_len>,<server_cert>,<clien t_cert_len>,<client_cert>,<c lient_pk_len>,<client_pk>
Parameter Saving Mode
Max Response Time
Reference
Defined Values
<flag>
<total_len>
<len>
<server>
<port>
<command_timeout_ms>
<bufsize>
<server_cert_len>
<server_cert>
<client_cert_len>
<client_cert>
<client_pk_len>
<client_pk>
<mqtt_id>
<used_state>
OK
Response
+CMQTTSNEWEXT: <mqtt_id>
OK or
ERROR
NO_SAVE
-
1 Means there are more packages
0 Means this package is the last one
The total length of the command
The length of current package
String, null or server IP address(or MQTT server name).
Max length is
50.
String, MQTT server port, can be from 0 to 65535.
Integer, AT command timeout (ms), can be from 0 to 60000.
Integer, buffer size, can be from 20 to 1132.
Server certification length, for mqtts.
Server certification, for mqtts, should be HEX format.
Client certification length, for mqtts.
Client certification, for mqtts, should be HEX format.
Client private key length, for mqtts.
Client private key, for mqtts, should be HEX format.
Integer, MQTT id.
The used result of mqtt_id
0 Not used
1 Used
Example
AT+CMQTTSNEWEXT?
+CMQTTSNEWEXT: 0,0,null
OK www.simcom.com 249 / 331
