RESOURCE LIBRARY ON DESIGNING WITH EMBEDDED WI-FI

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Application Notes
AN001 802.11 Packet Sniffer
GainSpan nodes communicate with an Access Point (AP) over a wireless link. In analyzing and optimizing performance, it can be useful to capture all the packets exchanged between the node and AP. This document describes how to install the packet capture utility Wireshark, and shows an example packet stream.
 
AN005 GainSpan SOC RF Measurements
This document describes how to configure the GainSpan chip to easily perform typical radio-related measurements: CW output power, modulated output spectrum and spectral mask conformance, and receiver sensitivity.
 
AN008 Measuring GainSpan SOC Power Consumption
This document describes recommended procedures for measuring GainSpan SOC power consumption in standby and various active states.
 
AN009 WLAN Security
This Application Note provides a short description of the history of link-layer security approaches for wireless networks, and specific information on configuring GainSpan nodes and access points for secure access.
 
AN010 MULTI Installation Guide
GainSpan Embedded Platform Software (GEPS) uses the GreenHills uVelOSity RTOS. The MULTI Integrated Development Environment is recommended for developing User Applications and linking them to GEPS. This document describes how to obtain a license and install MULTI in a Windows PC.
 
AN017 Sensor Node Range Testing
This document discusses some of the factors that influence the range of a Wi-Fi radio link: transmitted power, receiver sensitivity, antennas, and indoor and outdoor obstructions. It also provides examples of measured range for a GainSpan TLS node in various indoor and outdoor environments.
 
AN019 Gainspan Extensible Data Packet Format
Firmware provided with GainSpan reference boards periodically acquires data from the on-board sensors and forwards it to a host over the wireless link. This document describes the data packet format used for Evaluation (TLS) Board release 1.1, with application firmware version 1.1.0 and above, and Development Board release 1.0 with application firmware version 1.0.0 and above.
 
AN021 Access Point Configuration
This application note starts with an overview of an AP architecture and configuration, followed by a more specific discussion of typical AP setups for GainSpan SOC-based Stations. It provides detailed configuration charts and instructions for some popular Access Points: the Cisco AP, the DLink DWL-G, the Linksys WRTG, and the Netgear WPN.
 
AN023 Battery Level Check
This application note explains the potential problems that can arise if a node drains its battery too heavily before the battery is replaced, and describes how to use GEPS' battery check parameters to alert the network and protect the node.
 
AN025 Serial to Wi-Fi Bridge
This document provides basic instructions for setup and demonstration of a transparent serial-to-serial bridge carried over a wireless network, using GainSpan's Serial to WiFi embedded software and a GainSpan evaluation board (EVB). At least one host computer, a serial terminal emulator, and a TCP/UDP client program, are also required for the demonstration.
 
AN037 Basics of Regulatory Certification
This document gives the general overview of regulatory requirements and advantages associated with GainSpan's RF certification for our low-power embedded Wi-Fi modules GS1011M.
 
AN042 Basic Antenna Guidelines
This document describes design considerations for choosing antennas include ease of use, cost, and conformity with respect to embedded WLAN applications. Also provides info on the PCB antenna of the GainSpan modules and the external Antenna's that have been qualified with the GainSpan modules.
 
Embedded Platform Software
WFW-APG_7.0 WLAN Firmware Application Programming Guide
The GainSpan chip contains two ARM processors, the WLAN CPU and the APP CPU. The WLAN CPU controls the radio and manages key system functions. While most users will employ GainSpan's Embedded Platform Software (GEPS) to support their application's needs, it is also possible to communicate directly with the WLAN firmware, either from the APP CPU or from an external processor. This document describes the Host Interface and messaging formats required for that purpose.
 
GS-S2WiFi-QS Serial-to-Wi-Fi Bridge Quickstart Guide
This quickstart guide provides basic instructions for setup and demonstration of a transparent serial-to-serial bridge carried over an . wireless network, using GainSpan's SerialWiFi software and a GainSpan Evaluation Board. At least one host computer, a serial terminal emulator, and a TCP/UDP client program, are also required for the demonstration.
 
GS-S2WiFi-APG Serial-to-Wi-Fi Adapter Application Programming Guide
GainSpan's Serial to Wi-Fi adapter software enables transparent serial communications carried over a wireless network. The Serial to Wi-Fi adapter also enables serial-based management of the GainSpan SOC and wireless network operation. This document describes the software architecture and usage models, and provides a detailed command reference.
 
GS-S2WiFi-CR Serial-to-Wi-Fi Adapter Command Reference
This document provides a convenient summary of serial commands and escape codes for the GainSpan Serial to WiFi Adapter.
 
GEPS2_APG Application Programmers Guide
GainSpan provides GainSpan Embedded Platform Software (GEPS) to make it easy to use the sophisticated capabilities of the GainSpan Wi-Fi chip (SOC). This document describes the GEPS architecture, the theory of operation of the GS under GEPS, and the system functions supported.
 
Boards and Reference Designs
GS1011-DG GS1011 Design Guidelines
This document provides guidance and rules for laying out printed circuit boards using the GS. Included are GS footprint details, routing of the RF signals, and power and reset provisions.
 
GS1011MxP EVB GS1011MxP Evaluation Board Design Package
This document provides a convenient summary of serial commands and escape codes for the GainSpan Serial to WiFi Adapter.