AirM2M_ESP8266 WiFi module user manual V3.2
Shanghai AirM2M Communication Technology Co., Ltd
http://www.airm2m.com
Page 47
Syntax
：
command
type
Grammar
Response
Description
Set
command
single
connCIPMUX=0)
：
AT+CIPSEND=<length>
multi
connCIPMUX=1)
：
AT+CIPSEND=<id>,<length>
+CME ERROR: invalid input
value
AT format or input error
+CME ERROR: The socket is
not connected
No connection has been
setup
>$$$$$$
SEND OK
>$$$$$$
ERROR
Test
command
AT+CIPSEND=?
+CIPSEND: <length>
OK
single
connection(AT+CIPMUX=0)
+CIPSEND: <0-3>,<length>
OK
multi-
connection(AT+CIPMUX=1)
Execution
command
AT+CIPSEND
OK
After AT+CIPMODE=1 and a
TCP/UDP
single-connection
has
been
established,this
command
wil
make
the
module goes to transparent
transmission mode
+CME ERROR: mode not support
Used in other scenarios
Parameter definition
：
parameter
definition
value
value instruction
<length>
data length
unit: bytes
<id>
link No.
0~3
connection id
5.3.5 Set the TCP socket window size
：
AT+CIPWND
This command is used to set the TCP socket window size for receiving data for the purpose of data flow
control.
Syntax
：
