Sierra Wireless WISMO218 User Manual download pdf (Page 48)

WA_DEV_W228_UGD_002 Rev 003 Page 48 of 78

WISMO228 TCP/IP AT Commands

Manual

Protocol

UART

IP Network (active socket)

TCP

[DLE] alone.

A single [DLE] is ignored.

Continuous Transparent Mode

TCP Sockets in Continuous Transparent Mode

In this mode there is no special meaning associated for [DLE]/[ETX] characters. They are considered

as normal data and all the data will be transmitted on the UART.

UDP Sockets in Continuous Transparent Mode

In this mode there is no special meaning associated for [DLE]/[ETX] characters. They are considered

as normal data and all data will be transmitted on the UART. In case a [ETX]/[DLE] character is

received, it will not be preceded by a [DLE] character before sending it to the UART.

Leaving Continuous/Continuous Transparent Mode

The UART can be switched back to AT mode by sending:

 

 an AT+WIPDATA=<proto.,<index>,0 on another UART in AT mode

 unsent data is

sent as a single datagram.

Resetting TCP Sockets

A TCP socket is reset when the connection is aborted due to an error on the socket. When the socket is

reset, an [ETX] character is sent on the UART to indicate the end of communication. The UART



Syntax

Action Command

AT+WIPDATA=<protocol>,<idx>,<mode>[,<send size>,<wait time>]

CONNECT

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Sierra Wireless WISMO218 User Manual Page 48