SLEXP4320A Silicon Labs

UG291: WGM110 Wi-Fi Expansion Kit User s Guide The WGM110 Wi-Fi Expansion Kit is an excellent way to explore WIRELESS EXPANSION BOARD FEATURES and evaluate the WGM110 Wi-Fi Module with an EFM32 MCU for your embedded application. EXP connector for interfacing Silicon Labs Starter Kits The kit contains a Wireless Expansion Board (BRD8016A) and a WGM110 Wi-Fi Mod- Common feature set, including SPI, ule Radio Board (BRD4320A). The WGM110 Wi-Fi Module is an easy to use and easy UART, and I2C to interface Wi-Fi Network Co-Processor (NCP). Most of the associated complexity of Allows board detection and Wi-Fi and the protocol stack is offloaded to the module and allows for easy Wi-Fi inte- identification gration into any embedded system. Radio Board connectors for inserting Silicon Labs Wireless Radio Boards The kit easily integrates and brings Wi-Fi connectivity to a compatible Silicon Labs Mini Simplicity debug connector MCU Starter Kit through the expansion header. The Wireless Expansion Board has al- Supports programming and debugging so been designed after the Raspberry Pi Hardware Attached on Top (HAT) board speci- the module firmware fication, allowing the WGM110 Wi-Fi Expansion Kit to connect to a Raspberry Pi. LDO for high-power radio boards Raspberry Pi compatible HAT Unpopulated header HAT EEPROM for identification WGM110 WI-FI MODULE RADIO BOARD FEATURES WGM110A Wizard Gecko Wi-Fi Module Integrated chip antenna 802.11b/g/n compliant TX power: 16 dBm RX sensitivity: -98 dBm CPU core: 32-bit ARM Cortex-M3 Flash memory: 1 MB RAM: 128 kB Module certification: FCC, IC, Japan and Korea CE compliant silabs.com Building a more connected world. Rev. 1.0 Table of Contents 1. Introduction................................3 1.1 Kit Contents ..............................3 1.2 Getting Started .............................3 2. Hardware Overview.............................4 2.1 Hardware Layout.............................4 3. Wi-Fi Expansion Kit.............................5 3.1 Board Setup ..............................5 3.2 Board Identification............................6 3.3 Host Interfaces .............................6 3.3.1 UART ..............................6 3.3.2 SPI ...............................7 3.3.3 STK Pin Mapping...........................8 4. Wireless EXP Board.............................9 4.1 EXP Header ..............................9 4.1.1 Pass-through Expansion Header .....................10 4.1.2 Expansion Header Pinout........................10 4.2 Raspberry Pi Connector ..........................11 4.2.1 Raspberry Pi Connector Pinout......................12 4.3 Mini Simplicity Connector..........................13 4.3.1 Mini Simplicity Connector Pinout .....................14 4.4 Power Supply..............................15 5. Reconfiguring the Wi-Fi Module Firmware ................... 17 5.1 Building the Module Firmware ........................17 5.2 Programming the Module Firmware ......................18 6. Schematics, Assembly Drawings, and BOM................... 20 7. Kit Revision History............................ 21 7.1 SLEXP4320A Revision History ........................21 8. Document Revision History......................... 22 silabs.com Building a more connected world. Rev. 1.0 2