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802.11b/g Wireless LAN Module / Device Server

TCP/IP (MC55 Form Factor Compatible)

Part Number: WISMC04BI

1. General Description

EZURiO’s 802.11b/g TCP/IP Wireless LAN Module is a fully integrated and qualified wireless device

server, designed to make it simple to embed 802.11 connectivity. It has been designed to be pin

compatible with the footprint of Siemens MC55 GPRS modules, allowing designers to design one pcb to

support either GPRS or Wireless LAN connectivity.

Unlike other wireless modules all of the necessary drivers, protocol stack, security algorithms and

antenna are integrated. The module also includes an interpreter that can run scripts, providing a

complete wireless processing solution. It enables you to add wireless internet connectivity to almost

any device with a serial port. The module is designed for lowest cost of integration and ownership. It

is ideal for enabling M2M applications.

The module is a dual processor design, dedicating one processor to the 802.11b/g baseband with a

second powerful ARM7 processor, with 16MB of SRAM and 64MB of flash memory running the wireless

drivers, TCP/IP stack, web server and UWScript interpreter. Connection to the host device is via a high

speed 921,600 bps UART, with an additional twelve GPIO lines and two 10 bit ADCs. The interpreter

allows complex scripts to be run, allowing the WISM module to operate with zero host loading. It

means it is possible to use the module to wirelessly enable “dumb” sensors or UART ports.

The UWScripting wireless language developed by EZURiO is simple to use, but provides a rich

programming environment. Derived from BASIC, it allows powerful scripts to be written that combine

WLAN link management with TCP/IP socket control and machine interaction. A wide range of example

scripts are available which allow new applications to be rapidly developed. Scripts are downloaded into

the module via the UART and then either run under control from the host processor or autonomously at

power on.

The use of a scripting language allows the module to function in a wide variety of applications, from

simple cable replacement, to a more complex communications co-processor in which the module takes

over the management of the communications interface, or as a completely self-contained M2M solution

in which the module gathers information and reports it without host intervention.

An HTTP server is built into the module which allows user defined web pages to be served using

dynamic web page content supplied from a script. Information for the web page can be taken from the

UART stream or variables within the script. The use of scripts allows these to be pre-processed before

being displayed on the web page. Similarly, information can be sent to the script running on the

module using HTTP POST commands. This allows flexible user interaction with a module via a standard

web browser. With the addition of an appropriate script it allows the implementation of complete web

enabled controllers and monitoring devices.

The module includes a high sensitivity, high gain antenna which provides excellent range. Typical open

field performance yields an operating range of over 100 metres. A second 50 Ohm U.FL connection is

provided for an external antenna. This can be used in place of the internal antenna, or in conjunction

with the internal antenna to implement antenna diversity for improved receive performance.

Support is provided for low power modes that make the Wireless LAN module particularly applicable to

battery powered installations. It has been designed to ensure the best co-existence with other devices

operating within the same frequency spectrum and has hardware support designed into the module for

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Inhaltsverzeichnis

Seite 1 - 1. General Description

802.11b/g Wireless LAN Module / Device Server TCP/IP (MC55 Form Factor Compatible) Part Number: WISMC04BI 1. General Description EZURiO’s 802.11b/g

Seite 2 - Applications

Seite 3 - 2. Features

7. Functional Description The Wireless LAN module is a self-contained product and requires only power to implement full communication. The integrated

Seite 4

Seite 5 - 2.1 Block Diagram

Seite 6 - 3. Mechanical

LAN module is powered down, the same restrictions on script operation as powersave 5 apply. The average current consumption in this mode is reduced t

Seite 7 - 4. Electrical

Seite 8 - 4.2.2.3 RS-232 Interface

Seite 9 - 4.2.2.4 Other Functions

9.8.1 Fixing Pillars EZURiO in conjunction with Richco has designed a mounting pillar for use with the Wireless LAN Module. This allows the module

Seite 10 - 5. RF Performance

Seite 11 - 7. Functional Description

Seite 12 - 7.1.2 Bluetooth Coexistence

Seite 13 - 8. Firmware Features

Seite 14 - 9. Application Information

Seite 15 - 9.4 Power-On-Reset

Seite 16

Physical Dimensions 35.0mm x 32.6mm x 7.6mm Weight 10 grams Environmental Operating Temperature Low Power Mode: -40°C to +85°C Continuous transmis

Seite 17 - 9.10 Ordering Information

3. Mechanical 3.1 Wireless LAN Module Dimensional outline All dimensions in mm DSH_WISMC04_1v2 WISM 50 pin TCP-IP Data She

Seite 18 - 10. Qualification

Seite 19 - 12. Development Kit

Seite 20 - 13. Disclaimers

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