Low power WIFI module user manual
Jinan USR IOT Technology Limited
Page 48/72
Default:300s
The module will not connect TCP_B after TCP timeout. The module will make connection
after another “TCPDIS” command.
4.2.2.31. AT+TCPLKB
Function:Query TCP_B connection status
Format:
AT+ TCPLKB<CR>
+ok=<sta><CR>< LF ><CR>< LF >
Parameters:
sta.: TCP_B connection status
on: TCP connected
off: TCP disconnected
4.2.2.32. AT+SNDB
Function: Send datas to SOCKB at Command Mode
Format:
AT+SNDB=<data_lenth ><CR>
+ok<CR>< LF ><CR>< LF >
Parameters:
data_lenth: Lenth of send data. Range: 0~1000 Byte
The
UART port will wait 3 seconds for input after this command is
sent OK. The data received from UART port is sent to socket. If the
interval of two bytes is more than 10ms, the data will be sent
instantly.
4.2.2.33. AT+RCVB
Function: Receive datas from SOCKB at Command Mode
Format:
AT+RCVB=<data_lenth><CR>
+ok=< data_lenth, data_content><CR>< LF ><CR>< LF >
Parameters:
data_lenth: Lenth of receive data. Range: 0~1000 Byte
data_content: contents of receive data.
If not receive any data in 3 second, then feok=0.
4.2.2.34. AT+WSSSID
Function: Set/Query Wi-Fi associated AP SSID parameters.
Format:
Query Operation
AT+WSSSID<CR>
+ok=<ap’s ssid><CR>< LF ><CR>< LF >
Set Operation
AT+ WSSSID=<ap’s ssid ><CR>