Specifications

Chapter 17 – TCP App AT Commands
106 Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide
Socket Data Exchange +WIPDATA
Description: The +WIPDATA command is used to read from or write to a socket. On successful execution of
the command, the UART switches to online data mode. The UART can be switched back to
online command mode (AT mode with PPP data call established) by sending an escape sequence
(“+++”) within a 1 second guard time before and after the sequence. De-asserting DTR can also
switch the mode from Data mode to Online Command mode (depending on the &D setting). If
data is not read using +WIPDATA command, further data will be delayed.
Syntax: AT+WIPDATA=<protocol>,<index>,<mode>
Command
Possible Responses
AT+WIPDATA=<protocol>,<index>,<mode>
CONNECT
AT+WIPDATA=?
OK
AT+WIPDATA?
OK
or displays pending data in socket as follows:
Note: if <protocol> equals 1:
+WIPDATA: <protocol>,<index>,<datagram
size>,<peer IP>,<peer port>
Note: if <protocol> equals 2:
+WIPDATA: <protocol>,<index>,<number of
readable bytes>
Values: <protocol>
1 UDP
2 TCP client
<index>
1-8 Socket or session identifier
<mode> Mode of operation.
1 Continuous Mode
Data mode used by UDP sockets. Data is collected from UART until the [ETX]
character is encountered in the data stream, or until the maximum size of the
buffer is reached, then sent as a single datagram. If the [ETX] character needs to
be transmitted then it must be preceded by the [DLE] character. This mode is
only supported by UDP protocol.
2 Continuous Transparent Mode
Data mode used by TCP sockets. All data received on UART is treated as data. In
this mode, [DLE]/[ETX] characters are considered as normal data and not special
characters. This mode is only supported for TCP protocol.
+WIPDATA
Unsolicited
Response: The +WIPDATA unsolicited response is output when data is received on a given socket while in
Online Command mode. If data is not read using +WIPDATA command, further data will be
delayed and +WIPDATA will not be shown.