Neoway N20 At Command Manual

Also see for N20: User guide Hardware user's guide

Contents

Neoway N20 At Command Manual Manual pdf 109 page image

N20AT Command ManualCopyright © Neoway Technology Co., Ltd 101Parameter : Topic to subscribe to, character string type: QoS grade of the topic, digit, 0-1Return ValueAfter the subscription is successful,+CLOUDSUBACK: After the subscription fails,+CMD ERROR:

ExampleAT+CLOUDSUB=/1000146090/Ndevice_T1/neo001,1+CLOUDSUBACK: Subscribe to the topicsuccessfully.AT+CLOUDSUB=/1000146090/Ndevice_T1/neo001,1+ CMD ERROR: <-19>Fail to subscribe to the topic. ACKtimed out.AT+CLOUDSUB=/1000146090/Ndevice_T1/neo001ERRORThe number of parameters wereincorrect.Remarks When subscribing to a topic, the time to get ACK from the service is 10seconds. If the device does not receive ACK within 10 seconds, thesubscription times out. If the device fails to subscribe, it returns +CMD ERROR: , anddisconnects to the MQTT server automatically.A new connection is required to set up by sending +CLOUDCONN. The length of the topic does not exceed 128 bytes.13.4 PUBLISH Data:+CLOUDPUBLISH\+PUBLISHDEFAULTDescription Publish data received after subscribing to a topicFormat+CLOUDPUBLISH: ,,,sg>+PUBLISHDEFAULT: ,,,