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AT+i Programmer's Manual - SE Spezial-Electronic AG

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26.3 Web Server Modes<br />

Two web server modes are defined as (see figure below):<br />

iChip configuration mode<br />

Host interaction mode<br />

iChip Embedded Web Server<br />

Each of these modes is supported by a dedicated website and a parameter access<br />

password.<br />

The iChip configuration mode allows remote iChip configuration. It encompasses web<br />

interactions between iChip and a remote browser to carry out iChip parameter<br />

maintenance and iChip firmware and application website uploads. The host processor<br />

does not take part in the interactions under this mode. Moreover, the host processor is not<br />

required at all for this mode to operate. Once an iChip is online and in possession of an IP<br />

address, any remote browser may surf to the iChip and update its non-volatile parameters<br />

without the host‘s involvement. The iChip configuration site is located at:<br />

HTTP:///ichip/<br />

In Host interaction mode, iChip is used to host, serve, and manage web interactions with<br />

a remote web browser on behalf of the embedded device‘s host processor. The host gains<br />

access to the web-based parameters via <strong>AT+i</strong> commands sent to iChip through the serial<br />

connection.<br />

Embedded System<br />

HOST iChip<br />

Host Interaction Mode<br />

26.4 The Application Website<br />

Modem/<br />

LAN<br />

iChip Configuration Mode<br />

Figure 26-1: iChip Web Server Modes<br />

Internet<br />

The application website is stored in non-volatile memory. It consists HTML code, which<br />

can include links to local or remote web pages, graphic images, text files, Java applets,<br />

WAP pages, and more.<br />

Device manufacturers can design their own embedded website using any web authoring<br />

tool. The iChip implementation supports a maximum website size of 64K. The site is<br />

uploaded to iChip through the serial connection, or through iChip‘s configuration<br />

website.<br />

Browser

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