T)

AT+SMCONF=?

Response

+SMCONF: “MQTTParamTag”,”MQTTParamValue range”

OK

R)

AT+SMCONF?

Response

+SMCONF: <MQTTParamTag>,<MQTTParamValue>

OK

W)

AT+SMCONF=<MQTTParamTag>,<MQTTParamV alue>

Response

OK

or

ERROR

Parameters

<MQTTParamTag>

“CLIENTID”   Client connection id

“URL”     (indispensable parameter) server URL address “server domain”,[“tcpPort”]

“server”: Host or IP

“tcpPort”: Port default is 1883 “KEEPTIME”   Hold connect time. default is 60s “CLEANSS”      Session clean in. Default is 0.

Range of values:(0-1). “USERNAME”    User name. default null “PASSWORD”  Password. default null

“QOS”    Send packet QOS level. range of values（0~2）

“TOPIC”   Publish topic name

“MESSAGE”    Publish message details

“RETAIN”   Retain identification. Default is 0.

Range of values:(0-1)

<MQTTParamValue> MQTT Parameter value. Type and supported content depend on related <MQTTParamTag>.

AT+SMCONF=”CLIENTID”,”id” OK AT+SMCONF=”KEEPTIME”,60 OK

AT+SMCONF=”URL”,”test.mosquitto.org”,”1883″ OK

AT+SMCONF=”CLEANSS”,1 OK

AT+SMCONF=”QOS”,1 OK

AT+SMCONF=”TOPIC”,”will topic” OK

AT+SMCONF=”MESSAGE”,”will message” OK

AT+SMCONF=”RETAIN”,1

OK

W)

AT+CSSLCFG=”convert “,<ssltype>,<cname>[,< keyname>[,<passkey>]]

Response

OK

If failed:

+CME ERROR: <err>

Parameters

<ssltype>

1              QAPI_NET_SSL_CERTIFICATE_E

2              QAPI_NET_SSL_CA_LIST_E

3              QAPI_NET_SSL_PSK_TABLE_E

<cname>   String type(string should be included in quotation marks): name of cert file

<keyname>   String type(string should be included in quotation marks):name of key file

<passkey>       String type (string should be included in quotation

marks):value of passkey

R)

AT+SMSSL?

Response

+SMSSL: <index>,<ca list>,<cert name>

OK

W)

AT+SMSSL=<index>,<c a list>,<cert name>

Response

OK

or

ERROR

Parameters

<index>         SSL status, range: 0-6

<ca list>         CA_LIST file name, length 20 byte

<cert name>   CERT_NAME file name, length 20 byte

AT+SMSSL=1,calist,certname

OK

E)

AT+SMCONN

Response

OK

or

ERROR

AT+SMCONN

OK

T)

AT+SMPUB=?

Response

+SMPUB: <topic>,<content length>,(0-2),(0-1)

OK

W)

AT+SMPUB=<topic>,<c ontent length>,<qos>,<retain>

Response

OK

or

ERROR

Parameters

<topic>   Subscribe packet

<qos>   Send packet QOS level, range: 0~2

<content length>   Message length, range: 0~512

<retain>   Server hold message range: 0~1

AT+SMPUB=”001″,10,1, 1

OK

T)

AT+SMSUB=?

Response

+SMSUB: “topic”,qos

OK

W)

AT+SMSUB=<topic>,<q os>

OK

or

ERROR

Parameters

<topic>   Subscribe packet

<qos>    Send packet qos level, range: 0~2

AT+SMSUB=”001″,1

OK

 R)

AT+SMUNSUB=?

Response

+SMUNSUB: “topic”

OK

W)

AT+SMUNSUB=<topic>

Response

OK

or

ERROR

Parameters

<topic>   Subscribe subject

AT+SMUNSUB=”001″

OK

 R)

AT+SMSTATE?

Response

+SMSTATE: <status>

OK

Parameters

<status>

0           Expression MQTT disconnect state

1           Expression MQTT on-line state

AT+SMSTATE?

+SMSTATE: 1

OK

 T)

AT+SMPUBHEX=?

Response

+SMPUBHEX: (0-1)

OK

 R)

AT+ SMPUBHEX?

Response

+SMPUBHEX: <status>

OK

PARAMETERS

<status>

0           SMPUB data format is normal

1           SMPUB data format is hex

W)

AT+SMPUBHEX=<statu

s>

Response

OK

or

ERROR

Parameters

<status>   SMPUB format status, range: 0~1

AT+SMPUBHEX=1

OK

E)

AT+SMDISC

Response

OK

or

ERROR

AT+SMDISC

OK