Send Data In Buffer Access Mode; Retrieve Data From Remote Server In Buffer Access Mode - Quectel BG96 TCP/IP Application Note

OK
+QIOPEN: 0,0
AT+QISTATE=1,0
+QISTATE: 0,"TCP","220.180.239.201",8705,65514,2,1,0,0,"usbmodem"
OK

3.2.2. Send Data in Buffer Access Mode

AT+QISEND=0
>test1<ctrl+Z>
SEND OK
AT+QISEND=0,4
>test
SEND OK
AT+QISEND=0,0
+QISEND: 9,9,0
OK
AT+QISENDEX=0,"3132333435"
SEND OK
AT+QISEND=0,0
+QISEND: 14,14,0
OK

3.2.3. Retrieve Data from Remote Server in Buffer Access Mode

+QIURC: "recv",0
AT+QIRD=0,1500
BG96_TCP/IP_Application_Note
//Send variable-length data.
//SEND OK does not mean the data has been sent to the server
successfully. The host can query whether the data has reached the
server via AT+QISEND=0,0.
//Send fixed-length data and the data length is 4 bytes.
//Query the length of sent data, acknowledged data and
unacknowledged data.
//Send Hex string data.
//Query the length of the sent data, acknowledged data and
unacknowledged data..
//<connectID> 0 has received data.
//Retrieve the data. The maximum length of data to be retrieved is 1500
bytes.
LPWA Module Series
BG96 TCP/IP Application Note
//TCP client is connected successfully. It is
suggested to wait for 150 seconds for the
URC +QIOPEN: <connectID>,<err>. If the
URC cannot be received in 150 seconds,
the host can use AT+QICLOSE to close the
socket.
//Query the connection status of socket
service 1.
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