Silicon Laboratories EFR32BG1 Manual de usuario

UG268: EFR32BG1 2.4 GHz 8 dBm WLCSP

Wireless Starter Kit User's Guide

A Silicon Labs Wireless Starter Kit for the EFR32BG1 Blue Gecko

is an excellent starting point to get familiar with the device, and it

provides all necessary tools for developing a Silicon Labs wireless

application.

The Wireless Starter Kit Mainboard contains sensors and peripherals enabling easy

demonstration of some of the EFR32™'s many capabilities. An on-board J-Link debug-

ger allows debugging of the attached radio board as well as providing a debug connec-

tion for external hardware.

A plug-in Radio Board contains the reference design for the EFR32 itself, including the

RF section and device-specific hardware.

WSTK MAINBOARD FEATURES

• Ethernet and USB connectivity

• Advanced Energy Monitor

• Virtual COM Port

• Packet Trace Interface support

• SEGGER J-Link on-board debugger

• Supports debugging the attached radio

board or an external device

• Silicon Labs' Si7021 Relative Humidity

and Temperature sensor

• Ultra low power 128x128 pixel Memory

LCD

• User LEDs / Pushbuttons

• 20-pin 2.54 mm header for expansion

boards

• Breakout pads for direct access to all radio

I/O pins

• Power sources include USB, CR2032 coin

cell and AA batteries.

BRD4101B RADIO BOARD FEATURES

• EFR32BG1 Blue Gecko Wireless SoC

with 256 kB Flash and 32 kB RAM

(EFR32BG1B232F256GJ43).

• Inverted-F PCB antenna (2.4 GHz band)

• 8 Mbit low-power serial flash for over-the-

air upgrades.

SOFTWARE SUPPORT

• Simplicity Studio™

• Energy Profiler

• Network Analyzer

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1. Introduction

The EFR32BG1 Blue Gecko Wireless SoC itself is featured on a Radio Board that forms a complete reference design, inluding the RF

section and other components.

The EFR32 Radio Board plugs directly into a Wireless Starter Kit Mainboard. The WSTK Mainboard features several tools for easy

evaluation and development of wireless applications. An on-board J-Link debugger enables programming and debugging on the target

device over USB or Ethernet. The Advanced Energy Monitor (AEM) offers real-time current and voltage monitoring. A virtual COM port

interface (VCOM) provides an easy-to-use serial port connection over USB or Ethernet. The Packet Trace Interface (PTI) offers invalua-

ble debug information about transmitted and received packets in wireless links.

All debug functionality, including AEM, VCOM and PTI, can also be used towards external target hardware instead of the attached radio

board.

To further enhance its usability, the WSTK Mainboard contains sensors and peripherals demonstrating some of the EFR32BG1's many

capabilities.

1.1 Radio Boards

A Wireless Starter Kit consists of one or more mainboards and radio boards that plug into the mainboard. Different radio boards are

available. Each featuring different Silicon Labs devices with different operating frequency bands.

Since the mainboard is designed to work with all different radio boards, the actual pin mapping from a device pin to a mainboard feature

is done on the radio board. This means that each radio board has its own pin mapping to the Wireless Starter Kit features such as

buttons, LEDs, the display, the EXP header and the breakout pads. Because this pin mapping is different for every radio board, it is

important that the correct document be consulted which shows the kit features in context of the radio board plugged in.

This document explains how to use the Wireless Starter Kit when the EFR32BG1 2.4 GHz 8 dBm WLCSP Radio Board (BRD4101B) is

combined with a Wireless STK Mainboard. The combination of these two boards is hereby referred to as a Wireless Starter Kit (Wire-

less STK).

1.2 Ordering Information

BRD4101B can be obtained as a separate radio board, SLWRB4101B. The Wireless Starter Kit mainboard can be obtained as part of

another kit.

Table 1.1. Ordering Information

Part Number Description Contents Notes

SLWRB4101B EFR32BG1 2.4 GHz 8 dBm WLCSP Radio Board 1x BRD4101B EFR32BG1 2.4 GHz 8 dBm WLCSP Radio

Board

1.3 Getting Started

Detailed instructions for how to get started can be found on the Silicon Labs web pages:

http://www.silabs.com/start-efr32bg

UG268: EFR32BG1 2.4 GHz 8 dBm WLCSP Wireless Starter Kit User's Guide

Introduction

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2. Hardware Overview

2.1 Hardware Layout

The layout of the EFR32BG1 2.4 GHz 8 dBm WLCSP Wireless Starter Kit is shown in the figure below.

Radio Board

Breakout pads

1.28" Memory-LCD Display

Ultra-low power

128 x 128 pixel resolution

SPI interface

Ethernet RJ-45

J-Link Debugger

Virtual COM port

Packet Trace

Advanced Energy Monitoring

USB mini-B

J-Link Debugger

Virtual COM port

Packet Trace

Advanced Energy Monitoring

Coin Cell Holder

CR2032 Battery

Power Select Switch

BAT / USB / AEM

2x User Push Buttons 2x User LEDs

Simplicity Connector

External targets:

Virtual COM port

Packet Trace

Advanced Energy Monitoring

Debug Connector

ARM Coresight 19-pin

OUT: External targets

IN: External debug probes

Reset Button

Si7021

Relative Temperature &

Humidity Sensor

EXP Header

Expansion board connector

Figure 2.1. Kit Hardware Layout

UG268: EFR32BG1 2.4 GHz 8 dBm WLCSP Wireless Starter Kit User's Guide

Hardware Overview

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2.2 Block Diagram

An overview of the EFR32BG1 2.4 GHz 8 dBm WLCSP Wireless Starter Kit is shown in the figure below.

Debug

USB Mini-B

Connector

UART

RJ-45 Ethernet

Connector

Packet Trace

AEM

Multiplexer

Debug

UART

ETM Trace

Packet Trace

AEM

Debug

UART

Packet Trace

AEM

Simplicity

Connector

Debug

Connector

Board

Controller

OUT

MCU

SMA

Connector

2.4 GHz RF

Inverted-F

PCB Antenna

EFR32BG1

Bluetooth SoC

ETM Trace

128 x 128 pixel

Memory LCD

I2C Si7021

Temperature

& Humidity

Sensor

SPI 8 Mbit

MX25R

Serial Flash

GPIO

EXP

Header

User Buttons

& LEDs

GPIO

Figure 2.2. Kit Block Diagram

UG268: EFR32BG1 2.4 GHz 8 dBm WLCSP Wireless Starter Kit User's Guide

Hardware Overview

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3. Connectors

This chapter gives you an overview of the Wireless STK Mainboard connectivity. The placement of the connectors can be seen in the

figure below.

Simplicity

Connector

In/Out Debug

Header

GND

P25

P24

P27

P26

P29

P28

P31

P30

P33

P32

P35

P34

P37

P36

P39

P38

P41

P40

P43

P42

P45

P44

GND

Radio Board

Connectors

Expansion

Header

GND

VMCU

P11

P10

P13

P12

P15

P14

P17

P16

P19

P18

P21

P20

GND

P23

P22

VRF

3V3

Ethernet

Connector

J-Link USB

Connector

Figure 3.1. Mainboard Connector Layout

3.1 J-Link USB Connector

The J-Link USB connector is situated on the left side of the Wireless Starter Kit mainboard. Most of the kit's development features are

supported through this USB interface when connected to a host computer, including:

• Debugging and programming of the target device using the on-board J-Link debugger

• Communication with the target device over the virtual COM port using USB-CDC

• Accurate current profiling using the Advanced Energy Monitor

In addition to providing access to development features of the kit, this USB connector is also the main power source for the kit. USB 5V

from this connector powers the board controller and the Advanced Energy Monitor. It is recommended that the USB host be able to

supply at least 500 mA to this connector, although the actual current required will vary depending on the application.

3.2 Ethernet Connector

The Ethernet connector provides access to all of the Wireless Starter Kit's development features over TCP/IP. The Ethernet interface

provides some additional development features to the user. Supported features include:

• Debugging and programming of the target device using the on-board J-Link debugger

• Communication with the target device over the virtual COM port using TCP/IP socket 4901

• "VUART" communication with the target device over the debug SWD/SWO interface using TCP/IP socket 4900

• Accurate current profiling using the Advanced Energy Monitor

• Packet Trace interface supports real-time radio packet and network analysis

• The "Admin Console", a telnet console that gives access to advanced configuration options, using TCP/IP socket 4902

Please note that the Wireless Starter Kit cannot be powered using the Ethernet connector, so in order to use this interface, the USB

connector must be used to provide power to the board.

UG268: EFR32BG1 2.4 GHz 8 dBm WLCSP Wireless Starter Kit User's Guide

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3.3 Breakout Pads

Most of the EFR32's pins are routed from the radio board to breakout pads at the top and bottom edges of the Wireless STK Main-

board. A 2.54 mm pitch pin header can be soldered on for easy access to the pins. The figure below shows you how the pins of the

EFR32 maps to the pin numbers printed on the breakout pads. To see the available functions on each, please refer to the

EFR32BG1B232F256GJ43 Data Sheet.

GND

VMCU

P23 / NC

P21 / NC

P19 / NC

P17 / NC

GND

P15 / NC

P13 / PC10 / EXP16 / I2C_SDA

P11 / PC9 / EXP14

P9 / PC8 / EXP12

P7 / PC6 / EXP10 / VCOM_RTS / DISP_SCS

P5 / PB11 / EXP8 / VCOM_CTS / FLASH_SCLK / DISP_SCLK

P3 / PA1 / EXP6 / VCOM_RX / FLASH_MISO

P1 / PA0 / EXP4 / VCOM_TX / FLASH_MOSI / DISP_SI

GNDGND

5V5V

NCNC

P45 / NCNC / P44

P43 / NCNC / P42

P41 / NCNC / P40

3V33V3

P39 / NCNC / P38

P37 / SENSOR_ENABLENC / P36

P35 / NCNC / P34

P33 / NCNC / P32

P31 / NCNC / P30

P29 / PF2 / DBG_SWONC / P28

P27 / PF1 / DBG_SWDIONC / P26

P25 / PF0 / DBG_SWCLKNC / P24

GNDGND

VRF

GND

VMCU

NC / P22

NC / P20

NC / P18

PTI_FRAME / PB13 / P16

GND

PTI_DATA / PB12 / P14

I2C_SCL / EXP15 / PC11 / P12

NC / P10

NC / P8

BUTTON1 / EXP9 / PF5 / P6

BUTTON0 / EXP7 / PF4 / P4

NC / P2

IOEXP_WAKE / EXP3 / PF3 / P0

VRF

J101 J102

Figure 3.2. Radio Board Pin Mapping on Breakout Pads

3.4 Expansion Header

On the right hand side of the Wireless STK Mainboard an angled 20-pin expansion header is provided to allow connection of peripher-

als or plugin boards. The connector contains a number of I/O pins that can be used with most of the EFR32 Blue Gecko's features.

Additionally, the VMCU, 3V3 and 5V power rails are also exported.

The connector follows a standard which ensures that commonly used peripherals such as an SPI, a UART and an I2C bus are available

on fixed locations in the connector. The rest of the pins are used for general purpose IO. This allows the definition of expansion boards

that can plug into a number of different Silicon Labs Starter Kits.

The figure below shows the pin assignment of the expansion header. Because of limitations in the number of available GPIO pins,

some of the expansion header pins are shared with kit features.

1516

20 19

VMCU

SPI_MOSI / PA0

SPI_MISO / PA1

SPI_CLK / PB11

SPI_CS / PC6

UART_TX / PC8

UART_RX / PC9

I2C_SDA / PC10

3V3

GND

PF3 / GPIO

PF4 / GPIO

PF5 / GPIO

PC11 / I2C_SCL

Board ID SDA

Board ID SCL

Reserved (Board Identification)

EFR32 I/O Pin

Figure 3.3. Expansion Header

UG268: EFR32BG1 2.4 GHz 8 dBm WLCSP Wireless Starter Kit User's Guide

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3.4.1 Expansion Header Pin-out

The pin-routing on the EFR32 is very flexible, so most peripherals can be routed to any pin. However, many pins are shared between

the Expansion Header and other functions on the Wireless STK Mainboard. Table 3.1 Expansion Header Pinout on page 6 includes

an overview of the mainboard features that share pins with the Expansion Header.

Table 3.1. Expansion Header Pinout

Pin Connection EXP Header function Shared feature Peripheral mapping

20 3V3 Board controller supply

18 5V Board USB voltage

16 PC10 I2C_SDA SENSOR_I2C_SDA I2C0_SDA #15

14 PC9 UART_RX - USART1_RX #13

12 PC8 UART_TX - USART1_TX #13

10 PC6 SPI_CS VCOM_RTS, DISP_SCS USART0_CS #8

8 PB11 SPI_SCLK VCOM_CTS, DISP_SCLK,

FLASH_SCLK

USART0_CLK #4

6 PA1 SPI_MISO VCOM_RX, FLASH_MISO USART0_RX #0

4 PA0 SPI_MOSI VCOM_TX, DISP_SI,

FLASH_MOSI

USART0_TX #0

2 VMCU EFR32 voltage domain, included in AEM measurements.

19 BOARD_ID_SDA Connected to Board Controller for identification of add-on boards.

17 BOARD_ID_SCL Connected to Board Controller for identification of add-on boards.

15 PC11 I2C_SCL SENSOR_I2C_SCL I2C0_SCL #15

13 NC - -

11 NC - -

9 PF5 GPIO BUTTON1

7 PF4 GPIO BUTTON0

5 NC - -

3 PF3 GPIO IOEXP_WAKE

1 GND Ground

UG268: EFR32BG1 2.4 GHz 8 dBm WLCSP Wireless Starter Kit User's Guide

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3.5 Debug Connector

The Debug Connector serves multiple purposes based on the "debug mode" setting which can be configured in Simplicity Studio. When

the debug mode is set to "Debug IN", the debug connector can be used to connect an external debugger to the EFR32 on the radio

board. When set to "Debug OUT", this connector allows the kit to be used as a debugger towards an external target. When set to "De-

bug MCU" (default), the connector is isolated from both the on-board debugger and the radio board target device.

Because this connector is electronically switched between the different operating modes, it can only be used when the Board Controller

is powered (i.e. J-Link USB cable connected). If debug access to the target device is required when the Board Controller is unpowered,

connect directly to the appropriate breakout pins.

The pinout of the connector follows that of the standard ARM Cortex Debug+ETM 19-pin connector. The pinout is described in detail

below. Even though the connector has support for both JTAG and ETM Trace, it does not necessarily mean that the kit or the on-board

target device supports this.

1 2

13 14

15 16

17 18

2019

TMS / SWDIO / C2D

TCK / SWCLK / C2CK

TDO / SWO

TDI / C2Dps

RESET / C2CKps

GND

VTARGET

Cable Detect

Figure 3.4. Debug Connector

Note: The pinout matches the pinout of an ARM Cortex Debug+ETM connector, but these are not fully compatible as pin 7 is physically

removed from the Cortex Debug+ETM connector. Some cables have a small plug that prevent them from being used when this pin is

present. If this is the case, remove the plug, or use a standard 2x10 1.27 mm straight cable instead.

Table 3.2. Debug Connector Pin Descriptions

Pin number(s) Function Description

1 VTARGET Target reference voltage. Used for shifting logical signal levels between target and

debugger.

2 TMS / SDWIO / C2D JTAG test mode select, Serial Wire data or C2 data

4 TCK / SWCLK / C2CK JTAG test clock, Serial Wire clock or C2 clock

6 TDO/SWO JTAG test data out or Serial Wire Output

8 TDI / C2Dps JTAG test data in, or C2D "pin sharing" function

10 RESET / C2CKps Target device reset, or C2CK "pin sharing" function

12 TRACECLK

14 TRACED0

16 TRACED1

18 TRACED2

20 TRACED3

9 Cable detect Connect to ground

11, 13 NC Not connected

3, 5, 15, 17, 19 GND Ground

UG268: EFR32BG1 2.4 GHz 8 dBm WLCSP Wireless Starter Kit User's Guide

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3.6 Simplicity Connector

The Simplicity Connector enables the advanced debugging features, such as the AEM, the Virtual COM port and the Packet Trace In-

terface, to be used towards an external target. The pinout is illustrated in the figure below.

VMCU 1

33V3

GND

Board ID SCL

Board ID SDA

2VCOM_TX

4VCOM_RX

6VCOM_CTS

8VCOM_RTS

10 PTI0_SYNC

12 PTI0_DATA

14 PTI0_CLK

16 PTI1_SYNC

18 PTI1_DATA

20 PTI1_CLK

Figure 3.5. Simplicity Connector

Note: Current drawn from the VMCU voltage pin is included in the AEM measurements, while the 3V3 and 5V voltage pins are not. To

monitor the current consumption of an external target with the AEM, unplug the Radio Board from the Wireless STK Mainboard to avoid

that the Radio Board current consumption is added to the measurements.

Table 3.3. Simplicity Connector Pin Descriptions

Pin number(s) Function Description

1 VMCU 3.3 V power rail, monitored by the AEM

3 3V3 3.3 V power rail

5 5V 5 V power rail

2 VCOM_TX Virtual COM Tx

4 VCOM_RX Virtual COM Rx

6 VCOM_CTS Virtual COM CTS

8 VCOM_RTS Virtual COM RTS

10 PTI0_SYNC Packet Trace 0 Sync

12 PTI0_DATA Packet Trace 0 Data

14 PTI0_CLK Packet Trace 0 Clock

16 PTI1_SYNC Packet Trace 1 Sync

18 PTI1_DATA Packet Trace 1 Data

20 PTI1_CLK Packet Trace 1 Clock

17 EXT_ID_SCL Board ID SCL

19 EXT_ID_SDA Board ID SDA

7, 9, 11, 13, 15 GND Ground

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3.7 Debug Adapter

BRD8010A STK/WSTK Debug Adapter is an adapter board which plugs directly into the Debug Connector and the Simplicity Connector

on the mainboard and combines selected functionality from these two to a smaller footprint 10-pin connector which is more suitable for

space constrained designs.

For versatility, the Debug Adapter feature three different 10-pin debug connectors:

• Silicon Labs Mini Simplicity Connector

• ARM Cortex 10-pin Debug Connector

• Silicon Labs ISA3 Packet Trace

The ARM Cortex 10-pin Debug Connector follows the standard Cortex pin-out defined by ARM and allows the Starter Kit to be used to

debug hardware designs that use this connector.

The ISA3 connector follows the same pin-out as the Packet Trace connector found on the Silicon Labs Ember Debug Adapter (ISA3).

This allows the Starter Kit to be used to debug hardware designs that use this connector.

The Mini Simplicity Connector is designed to offer advanced debug features from the Starter Kit on a 10-pin connector:

• Serial Wire Debug (SWD) with SWO

• Packet Trace Interface (PTI)

• Virtual COM Port (VCOM)

• AEM Monitored voltage rail

Note: Packet Trace is only available on Wireless STK Mainboards. MCU Starter Kits do not support Packet Trace.

VAEM 1

RST

VCOM_TX

PTI_FRAME

SWDIO

2GND

4VCOM_RX

6SWO

8SWCLK

10 PTI_DATA

Figure 3.6. Mini Simplicity Connector

Table 3.4. Mini Simplicity Connector Pin Descriptions

Pin number Function Description

1 VAEM Target voltage on the debugged application. Supplied and monitored by the AEM

when power selection switch is in the "AEM" position.

2 GND

3 RST Reset

4 VCOM_RX Virtual COM Rx

5 VCOM_TX Virtual COM Tx

6 SWO Serial Wire Output

7 SWDIO Serial Wire Data

8 SWCLK Serial Wire Clock

9 PTI_FRAME Packet Trace Frame Signal

10 PTI_DATA Packet Trace Data Signal

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