LPWA Module Series
BG95&BG77&BG600L Series TCP/IP Application Note
BG95&BG77&BG600L_Series_TCP/IP_Application_Note 42 / 56
3.3.3. Receive Data from Remote Server in Buffer Access Mode
3.3.4. Close a Connection
successfully. The host can query whether the data has reached the
server with AT+QISEND=0,0.
AT+QISEND=0,4 //Send fixed-length data and the data length is 4 bytes.
>test
SEND OK
AT+QISEND=0,0 //Query the length of sent data, acknowledged data and
unacknowledged data.
+QISEND: 9,9,0 //A total of 9 bytes data has been sent, and the 9-byte data has
been acknowledged by the server.
OK
AT+QISENDEX=0,"3132333435" //Send Hex string data.
SEND OK
AT+QISEND=0,0 //Query the length of sent data, acknowledged data and
unacknowledged data.
+QISEND: 14,14,0
OK
+QIURC: "recv",0 //<connectID> 0 has received data.
AT+QIRD=0,1500 //Retrieve the data. The maximum length of data to be retrieved is 1500 bytes.
+QIRD: 5 //The length of actually retrieved data is 5 bytes.
test1
OK
AT+QIRD=0,1500
+QIRD: 0 //No data in buffer.
OK
AT+QIRD=0,0 //Query the total length of received data, including read and unread data.
+QIRD: 5,5,0
OK
AT+QICLOSE=0 //Close a connection whose <connectID> is 0. Depending on the
network, the maximum response time is 10 seconds.
OK
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