Quectel BG96 - EMQPUBLISH - Publish Data to a Message Topic

EMQPUBLISH – publish data to a message topic
Publish data to a created message topic. Data is sent to your thing in AWS IoT Console.
Type Syntax Returned Result
Test
AT+EMQPUBLISH=?
OK
+EMQPUBLISH: (0-7),(0-
1),"<pubdata>"
Read
AT+EMQPUBLISH?
OK
Write
AT+EMQPUBLISH=(0-7),(0-1),<pubdata>
where:
•
(0-7) is the publish index number
•
(0-1) is the Quality of Service, either:
•
0 – sends the message without
guaranteeing delivery. The
message is not stored on the
sender, and is not acknowledged
•
1 – guarantees the message is
delivered at least once
•
<pubdata> – is the published message.
If <pubdata> is not contained within
quotes, it is sent as text with no
modification. The maximum payload
length is 1000 characters. All characters
must be printable.
If "<pubdata>" is contained within
quotes, it is handled as either ASCII-hex
or text.
ETM handles "<pubdata>" as ASCII-hex
if it contains an even number of valid
ASCII-hex characters (0-9, a-f, A-F).
ASCII-hex is converted to binary for
transmission.
ETM handles all other data as text. For
text messages, \ (escape characters) are
removed.
OK – successfully wrote the command
ERROR – the command failed. Check your
syntax, and that you have already set up the
publish topic using at+emqpubopen?. Also
check you have sent the
AT+ETMSTATE=startmqtt command to
enable MQTT.
SEND OK – send confirmation relating to
Quality of Service. This response is for:
•
QoS=0 – message is published
•
QoS=1 – MQTT broker generates a
PUBACK to confirm receipt of the MQTT
message
SEND FAIL - send failure for QoS=1 only.
Example:
AT+EMQPUBLISH=1,1,"{\"BatteryPower\": \"Low\"}"
OK
SEND OK
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Eseye-enabled Quectel BG96 module Developer Guide v1.8
MQTT telemetry ATcommands