Bluegiga Wi-Fi® Software

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Table of Contents

• Key Features

• Benefits

• Wi-Fi® Software Architecture

• Use cases

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Key Features

IEEE 802.11 features

• 802.11 b/g/n

• 802.11d

• STA mode

• AP mode*

Security features

• WEP

• WPA and WPA2

• WPS*

Performance

• Up to 3.5Mbps over TCP

Embedded IPv4 stack

• TCP and UDP clients

• TCP and UDP servers

Application level protocols

• DHCP and DNS

• HTTP (server)*

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*) Software version 1.2

Key Features Supported host interfaces:

• UART

• USB (USB/CDC)

• SPI

Supported peripheral interfaces

• GPIO, AIO and timers

• I2C, SPI and UART

• Ethernet (RMII)*

Bluetooth co-existence support

Field upgrades

• DFU over UART

• DFU over USB

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*) Software version 1.2

Key Features Programming APIs

• BGAPITM over UART, USB or SPI

• BGScriptTM scripting language

Memory requirements

• 64kB RAM

• 256kB Flash

OS requirements

• None

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Benefits • Fully embedded 802.11 MAC and IPv4

compatible IP stack

• Small RAM, flash and MIPS

requirements allowing low cost MCUs

to be used

• Support for STA and AP mode and all

relevant security protocols

• Flexible software APIs allowing

standalone and hosted use cases

• High throughput over TCP/UDP

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Wi-Fi® Software Architecture

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• Bluegiga Wi-Fi software mplements the following layers

– 802.11 MAC

– STA and AP modes

– IPv4 compatible TCP/IP stack

– TCP and UDP protocols

– DHCP, DNS and HTTP

• Implements the following clients and servers

– TCP client/server

– UDP client/server

– DHCP client

– DNS client

– HTTP server

• Security

– WEP, WPA/WPA2-PSK and WPS

• Simple API for external host s (MCUs)

– BGAPITM : A simple protocol over UART, USB or SPI interfaces

– BGLibTM : A C library for host processors implementing BGAPI

• Supports standalone applications as well

– BGScriptTM : A simple scripting language for writing applications

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Bluegiga Wi-Fi Software

802.11 b/g/n radio

802.11 MAC

Bluegiga Wi-Fi SoftwareBluegiga Wi-Fi Software

802.11 MAC

IP

Bluegiga BGAPITM

TCP and UDP

DNS,DHCP and HTTP

Wi-Fi Manager

Bluegiga BGSCriptTM VM

Application (BGScriptTM)

HostHost

Bluegiga BGAPITM

Application

UART, USB or SPI

• BGAPITM protocol : A simple binary command, response and event protocol between the host (MCU) and the Wi-Fi software

– Used when a separate host (MCU) is used to control the Wi-Fi software over UART, USB or SPI

– Very small memory requirements size requirement and low implementation overhead

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Bluegiga Wi-Fi Software

• BGLibTM library : A portable ANSI C library (parser), which implements the BGAPITM protocol

– Easy to port to various architectures such as : ARM Cortex, Coldfire+ , PIC16/32 etc,

– Uses fuction–call back architecture

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Bluegiga Wi-Fi Software

Application

BGLib library

Main program

Library function

Callback function

Calls Calls

• BGScriptTM scripting language : A very simple BASIC-like application scripting language

– Used for standalone applications without an external MCU

– Enables very simple and fast application development with free SDK and toolchain

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Bluegiga Wi-Fi Software

• Why to use BGScriptTM?

• Very simple to use

– Fast development of simple Wi-Fi applications

– Examples: Access Point scan and connection, simple user interfaces, simple sensors

• Free software development tools

– Code developed with any text or source code editor

– Code compiled with Bluegiga’s free compiler

• Example scripts available

– Access Point scan

– TCP server

– TCP client

• Cuts out the need for external MCU

– Reduced product eBoM

– Smaller footprint

– Faster time-to-market

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Bluegiga Wi-Fi Software

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Use Cases

• Standalone architecture using Bluegiga WF121 Wi-Fi module

– Sensors and peripherals are directly connected to the WF121 via the IO interfaces

– Application executed on the on-board PIC32

– Application developed with BGScriptTM or ANSI C

WF121 Wi-Fi Module

Display Sensors

Buttons or Leds

IO or PWM

I2C or SPISPI

Power supply

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Use Cases

• Hosted architecture using Bluegiga WF121 Wi-Fi Module and a separate MCU

– Sensors and peripherals are directly connected to the MCU via the IO interfaces

– WF121 connected to the MCU via UART, USB or SPI

– Application developerd to the MCU and interfacing to WF121 done using BGAPITM protocol (BGLibTM can be used on the host)

WF121

Wi-Fi Module

Display

Sensors

Buttons or Leds

UART, USB or SPI

IO or PWM

I2C or SPI

SPI

www.bluegiga.com

www.bluegiga.com

Thank You

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