Technical information
General AT+i Command Format
1-8 AT+i Commands Reference Manual May 31, 2008
Connection
BDRA Auto baud rate mode Forces W24 into auto baud rate detection mode.
UP Connect to Internet Forces W24 to go online, establish an Internet session,
and optionally register its IP address.
TUP Triggered Internet session
mode
Enters a mode in which W24 goes online in response to
triggers from external signals. It also supports a special
Always Online mode.
DOWN Perform a software reset Performs a software reset. Forces W24 to terminate an
Internet session and go offline.
PING PING a remote system Sends a PING message and waits for its echo response.
Send E-mail
[!]EMA:<text> Send textual e-mail Defines the textual contents of the e-mail body.
Following this command, several text lines can be sent in
sequence.
[!]EMB:<sz>,
<data>
Send binary e-mail Prefixes a binary data stream. The data is encapsulated
as a base 64 encoded MIME attachment. Following this
prefix, exactly <sz> bytes are streamed to W24.
[!]E* Terminate binary e-mail Terminates a binary (MIME attachment) e-mail.
Retrieve E-mail
[!]RML Retrieve mail list Retrieves an indexed, short form list of all qualifying
messages in mailbox.
[!]RMH[:<i>] Retrieve header Retrieves only the e-mail header part from the <i>'th
e-mail in the mailbox, or the entire mailbox.
[!]RMM[:<i>] Retrieve e-mail Retrieves all e-mail contents of the <i>'th e-mail in the
mailbox, or the entire mailbox.
HTTP Client
[!]RLNK[:
<URL>]
Retrieve link Retrieves a file from a URL on a web server. If <URL> is
not specified, uses the URL stored in the URL parameter.
[!]SLNK:<text> Send POST request Sends a file consisting lines of ASCII to a web server
defined in the URL parameter.
HTTP Server
WWW Activate the web server Activates W24's internal web server. Once activated,
remote browsers can surf W24's website.
WNXT Retrieve next changed
web parameter
Returns the parameter tag name and new value of the
next web parameter that has been changed as a result of a
submit by a remote browser.
SerialNET
[!|@]SNMD Activate SerialNET mode Activates W24's dedicated serial-to-network SerialNET
mode.
Table 1-1: AT+i Commands by Category (Cont.)
Command Function Parameters/Description