Rainbow Electronics DAB-WLS-C01 User Manual

802.11b/g Wireless LAN Module / Device Server TCP/IP (BISM II Pin Compatible) Part Number: WISMC01BI

1. General Description

The EZURiO 802.11b/g TCP/IP Wireless LAN Module i s a fully integrated and qualified wireless device server, designed to make it simple to embed 802.11 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 devi ce is via a hi gh speed 921,600 bps UART, with an additi onal 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, any of the GPIO or ADC pins, 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 twelve GPIO and two analogue input lines can be configured using scripts to provide control or monitoring of simple devices such as switches or LEDs without requiring any external processing. Both the GPIO and ADC lines can be accessed using scripts over either the wired host UART connection, or remotely over the Wireless LAN connection.

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 2 and 3-wire Bluetooth co-existence schemes. Direct connectivity to the EZURiO BISM Bluetooth module is supported, as well as to other enabled Bluetooth devices.

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The Wireless LAN module is supplied in a small pcb form factor (22.8mm x 33.8mm x 7.6mm), that connects to a main pcb using a 40 way Hirose connector which is pin compatible with the EZURiO Bluetooth Intelligent Serial Module BISMII. The module is Lead-free and RoHS compliant and supports an industrial operational temperature range of -40°C to +85°C.

The module has FCC modular certification, Industry Canada certification and CE approval. These approvals allow users to simplify or bypass RF regulatory testing, enhancing time to market and reducing approvals time and cost.

A low cost development system is available for fast product evaluation and development.

Applications

• POS Equipment • Automotive Applications

• Medical Equipment • Street furniture

• Telematics • Industrial Automation

• Metering Applications

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2. Features

Feature Implementation

Wireless Specification

Standards Supported IEEE 802.11b, IEEE 802.11g Frequency 2.412 – 2.484 GHz Channels 11 channels – USA

13 channels – Europe 4 channels – France (EIRP > 10mW outdoors) 14 channels – Japan

Programmable selection of region

Max Transmit Power 802.11b: +15 dBm @ antenna connector

802.11b: +17 dBmi from integrated antenna

802.11g: +13 dBm @ antenna connector

802.11g: +15 dBmi from integrated antenna

Receive Sensitivity 802.11b: -91dBm @ 1 Mbps, -84dBm @ 11Mbps

802.11g: -84dBm @ 6Mbps, -67dBm @ 54Mbps Data Rates 54Mbps – 1Mbps with automatic fallback Data Transfer rate Up to 921.6kbps (limited by UART) Modulation Schemes 802.11b – BPSK, QPSK, CCK, DSSS

802.11g – BPSK, QPSK, 16-QAM, 64-QAM, OFDM Range Up to 100 metres free space Connection Modes Infrastructure and ad-hoc (IBSS)

Antenna Modes

Integrated Antenna High performance +2dBi multilayer ceramic External Antenna 50 Ohm U.FL connection Antenna Diversity Supported using integrated and external antennae

UART Interface

Serial Interface RS-232 bi-directional for commands and data

16550 compatible Baud Rate Configurable from 9,600 to 921,600bps Bits 7 or 8 Parity Odd, even, none Stop bits 1 or 2 Default Serial parameters 115200,n,8,1 Levels 3.0V CMOS Modem Control

DTR, DSR, DCD, RI, RTS, CTS

†

General Purpose Interface

I/O

12 general purpose I/O pins, 3.0V CMOS

†

ADC 2 ADC inputs. 10 bit, 3.0V max

_________________________

†

DSR, DTR, RI and DCD are configurable either as GPIO or as modem control lines.

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Security

Open Connection

WEP encryption 64 and 128 bit options

WPA-PSK*

WPA2 Enterprise & Personal

IEEE 802.11i-PSK (AES-CCMP)*

TKIP Encryption

SSL2 / SSL3 / TLS1*

Hardware Acceleration for security features

Protocols

Network Drivers 802.11b, 802.11g Internet IPv4, TCP, UDP, DHCP Client, DNS Client, ARP, HTTP Server

Other protocols are supported via UWScript, e.g. Telnet

Web Server

Features Serves web pages from the module

Runs standard user generated HTTP web pages

Provides access to I/O and ADC status

Serves Dynamic Content from UWScripts

Accepts POST inputs for control of scripts

Allows dynamic control of ports

Website Capacity 128kBytes

Power Consumption

Powersave modes IEEE Powersave Modes 0,1,5 & 6 Current Consumption Less than 250mA during data transfer with a configurable low power

mode less than 5mA

Supply Voltage

Supply 3.3V – 5.0V DC Regulation On-board regulators, brown-out detection and watchdog

Embedded Wireless Processor System

Specification ARM7 with 16Mb SRAM and 64Mb Flash Scripting Interpreter Runs UWScript

Fully featured scripting language with wireless extensions Data Filing System User accessible Script Capacity 128kBytes

Auto-run Optional Automatic script execution at power on WLAN functions Search, Attach, Detach, Security, Region, etc. Upgradeability Firmware upgradeable via UART

Coexistence / Compatibility

Bluetooth 2-wire and 3-wire hardware coexistence schemes supported Pin compatible with EZURiO BISM Bluetooth modules

Connections

Interface 40 way Hirose DF-12 Connector External Antenna U.FL connector for 50 Ohm antenna

Available Q3 2007

** Shared between webserver and script storage

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Physical

Dimensions 22.8mm x 33.8mm x 7.6mm Weight 8 grams

Environmental

Operating Temperature Low Power Mode: -40°C to +85°C

Continuous transmission: -40°C to +60°C

Minimum cold start temperature: -25°C Storage Temperature -50°C to +125°C

Approvals

FCC Modular Approval PI405W IC Industry Canada CE & R&TTE Approved

Miscellaneous

Lead free Lead-free and RoHS compliant Warranty 2 Years

Development Tools

Development Kit Development board and software tools UWTerminal Free downloadable terminal emulator UWScript Library Free example scripts for a wide range of applications

3. Block Diagram

The module has a 40 way Hirose connector which provides a compatible pin out to the same form factor EZURiO Bluetooth Intelligent Serial Module.

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4. Mechanical

4.1 Wireless LAN Module Dimensional outline

All dimensions in mm

Notes

1 RF antenna 2 External Antenna connector (Hirose U.FL-R-SMT) 3 Board to board connector (Hirose connector) 4 2.0mm maximum top side component height (excluding antenna) 5 1.5mm maximum bottom side component height 6 3.8mm max. pcb clearance for fixings body (top and bottom) 7 40 way connector footprint 8 2.2 +/- 0.075 fixing holes x 3

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