SLWRB4181A Silicon Labs

UG386: EFR32xG21 2.4 GHz 10 dBm Wireless Starter Kit User s Guide A Wireless Starter Kit with the BRD4181A Radio Board is an ex- BRD4181A RADIO BOARD FEATURES cellent starting point to get familiar with the EFR32 Wireless Gecko Wireless System-on-Chip. It also provides all necessary EFR32xG21 Wireless Gecko Wireless SoC with 1024 kB Flash and 96 kB RAM tools for developing a Silicon Labs wireless application. (EFR32MG21A010F1024IM32). BRD4181A is a plug-in board for the Wireless Starter Kit Mainboard. It is a complete ref- Inverted-F PCB antenna (2.4 GHz band) erence design for the EFR32xG21 Wireless SoC, with matching network and a PCB an- 2x user color LEDs (red and green) tenna for 10 dBm output power in the 2.4 GHz band. WIRELESS STK MAINBOARD FEATURES The Wireless Starter Kit Mainboard contains an on-board J-Link debugger with a Packet Trace Interface and a Virtual COM port, enabling application development and debug- Advanced Energy Monitor ging of the attached radio board as well as external hardware. The mainboard also con- Packet Trace Interface tains sensors and peripherals for easy demonstration of some of the EFR32 s many ca- Virtual COM port pabilities. SEGGER J-Link on-board debugger This document describes how to use the BRD4181A Radio Board together with a Wire- External device debugging less Starter Kit Mainboard. Ethernet and USB connectivity Low power 128x128 pixel Memory LCD- TFT User LEDs / pushbuttons 20-pin 2.54 mm EXP header Breakout pads for Wireless SoC I/O CR2032 coin cell battery support SOFTWARE SUPPORT Simplicity Studio Energy Profiler Network Analyzer ORDERING INFORMATION SLWSTK6006A SLWRB4181A silabs.com Building a more connected world. Rev. 0.2 Table of Contents 1. Introduction................................4 1.1 Radio Boards ..............................4 1.2 Ordering Information............................4 1.3 Getting Started..............................4 2. Hardware Overview.............................5 2.1 Hardware Layout .............................5 2.2 Block Diagram..............................6 3. Connectors................................7 3.1 J-Link USB Connector ...........................7 3.2 Ethernet Connector ............................7 3.3 Breakout Pads..............................8 3.4 EXP Header...............................9 3.4.1 EXP Header Pinout...........................10 3.5 Debug Connector.............................11 3.6 Simplicity Connector............................12 3.7 Debug Adapter..............................13 4. Power Supply and Reset.......................... 14 4.1 Radio Board Power Selection.........................14 4.2 Board Controller Power...........................15 4.3 EFR32 Reset ..............................15 4.4 Battery Holder ..............................15 5. Peripherals............................... 16 5.1 Push Buttons and LEDs...........................16 5.2 Memory LCD-TFT Display..........................17 5.3 Virtual COM Port .............................18 5.3.1 Host Interfaces ............................19 5.3.2 Serial Configuration...........................19 5.3.3 Hardware Handshake ..........................20 6. Board Controller............................. 21 6.1 Admin Console..............................21 6.1.1 Connecting..............................21 6.1.2 Built-in Help .............................21 6.1.3 Command Examples ..........................22 6.2 Virtual UART ..............................22 7. Advanced Energy Monitor ......................... 23 7.1 Introduction...............................23 silabs.com Building a more connected world. Rev. 0.2 2