Silicon Laboratories UG172 User Manual

UG172: Wizard Gecko Wi-Fi® Module
Wireless Starter Kit

SLWSTK6120A User's

Guide

The SLWSTK6120A is an excellent starting point to get familiar
with the WGM110 Wi-Fi Module

The Wireless Starter Kit Mainboard contains sensors and peripherals demonstrating
some of the WGM110's many capabilities. The kit provides all necessary tools for devel­oping Wi-Fi wireless applications.

.

KIT FEATURES

• Supplied with WGM110 Wi-Fi Module
BRD4320A

• USB connectivity

•

SEGGER J-Link on-board debugger

• Debug Multiplexer supporting external
hardware as well as radio board

• Silicon Labs' Si7021 Relative Humidity and
Temperature sensor

• Ultra low power 128x128 pixel Memory
LCD

• LEDs / Push buttons / Reset button

• 20-pin 2.54 mm header for expansion
boards

• Breakout pads for direct access to all
WGM110 I/O pins

• Power sources

• USB

• 2 x AA battery holder

ORDERING INFO

• SLWSTK6120A

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RADIO BOARD FEATURES

• WGM110 Wizard Gecko Wi-Fi Module

• 1 MB Flash

•

• P/N WGM110

• Integrated high performance chip antenna

• Transmit power +16 dBm

• CPU core 32-bit ARM Cortex-M3

128 kB RAM

EXTENSION BOARD FEATURES

• Accelerometer

• Buttons and LEDs

• Joystick

• I2C Expansion

SOFTWARE SUPPORT

• Wizard Gecko Wi-Fi Software

• Wizard Gecko Wi-Fi SDK

Example applications for the kit

•

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UG172: Wizard Gecko Wi-Fi® Module Wireless Starter Kit SLWSTK6120A User's Guide

Introduction

1. Introduction

1.1 Description

SLWSTK6120A provides a complete development platform for Silicon Labs' Wizard Gecko WGM110Wi-Fi Module. The core of the
SLWSTK6120A is the Wireless Starter Kit Mainboard which features an on-board J-Link debugger, a virtual COM port interface, an LCD
display and a humidity/temperature sensor and through-holes to access all the pins of the Wizard Gecko Wi-Fi Module. The Mainboard
also contains two push-buttons and LEDs which can be used in user application testing. The WSTK Mainboard is paired with an Wizard
Gecko WGM110 Wi-Fi Module Radio Board that plugs directly into the Mainboard. The Radio Board includes the WGM110 Module with
a built-in high performance chip antenna, a microSD card slot and a USB interface for data transfer and power supply connection ena­bling stand-alone testing.

WSTK6120A Wireless Starter Kit is also supplied with an Expansion Board (BRD8006A Add-on Board) that can be connected to the
WSTK Mainboard expansion header. The Expansion Board contains additional peripherals such as an accelerometer, buttons, LEDs, a
joystick and pads for I2C expansion.

To support software development with SLWSTK6120A for the Wizard Gecko WGM110 Wi-Fi Module Silicon Labs also offers a free
SDK. The SDK includes BGTool™ which can be used to configure the WGM110 Module and test its functionality.

1.2 Kit Contents

The following items are contained in the Wizard Gecko Wi-Fi Wireless Starter Kit box:

• 1 x BRD4001A Wireless Starter Kit Mainboard

• 1 x BRD4320A Wizard Gecko WGM110 Wi-Fi Module Radio Board

• 1 x Expansion Board

• 1 x battery holder for 2 x AA batteries (batteries not included)

• 1 x USB Type A <-> USB Mini-B cable

• 1 x USB Type A <-> USB Micro-B cable

Please refer to Wizard Gecko WGM110 Wi-Fi® Module Radio Board BRD4320A Reference Manual for features of the included
BRD4320A Radio Board.

1.3 Getting Started

Detailed instructions for how to get started with your new Wizard Gecko Wi-Fi Wireless Starter Kit can be found on the Silicon Labs web
pages:

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

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WGM110

Module

Radio Board

Radio Board breakout pads

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

Expansion Board

3-axis Accelerometer
2x Push Buttons
2x LEDs
Analog Joystick
I2C device footprint

microSD/SDHC card slot

On the bottom side of the Radio Board

UG172: Wizard Gecko Wi-Fi® Module Wireless Starter Kit SLWSTK6120A User's Guide

2. Kit Hardware Layout

The layout of the Wizard Gecko Wi-Fi Module Wireless Starter Kit is shown below.

Kit Hardware Layout

Note: Some of
WGM110 Module. For more details see later sections in this document.

Figure 2.1 SLWSTK6120A Hardware Layout

the features and/or connections described in the above figure are not supported when using the WSTK with the

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WGM110

WiFi Module

USB Mini-B

Connector

RJ-45 Ethernet

Connector

Debug

UART

AEM

Multiplexer

Debug

UART

Packet Trace

AEM

Debug

UART

Packet Trace

AEM

Simplicity

Connector

Debug

Connector

User Buttons

& LEDs

128 x 128 pixel

Memory LCD

GPIO

Board

Controller

OUT

IN

MCU

I2C

Si7021

Temperature

& Humidity

Sensor

SPI

ADC Input

GPIO

SPI

USB Micro-B

Connector

Micro-SD

card reader

Accelerometer

BMA280

Analog

Joystick

Buttons

&

LEDs

Footprint for
I2C security

device

I2C

WSTK Mainboard

Peripherals

Expansion Board Peripherals

Radio Board

Peripherals

USB

WSTK Mainboard

UG172: Wizard Gecko Wi-Fi® Module Wireless Starter Kit SLWSTK6120A User's Guide

3. Kit Block Diagram

An overview of the Wizard Gecko Wi-Fi Module Wireless Starter Kit is shown in the figure below.

Kit Block Diagram

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Figure 3.1 SLWSTK6120A Block Diagram

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Simplicity
Connector

In/Out Debug
Header

GND

GND

5V

5V

P25

P24

P27

P26

P29

P28

P31

P30

P33

P32

P35

P34

P37

P36

P39

P38

P41

P40

P43

P42

P45

P44

GND

GND

NC

NC

Radio Board

Connectors

Expansion

Header

GND

GND

VMCU

VMCU

P1

P0

P3

P2

P5

P4

P7

P6

P9

P8

P1

1

P10

P13

P12

P15

P14

P17

P16

P19

P18

P21

P20

GND

GND

P23

P22

VRF

VRF

3V3

3V3

GND

VMCU

P23 / NC

P21 / NC

P19 / NC

P17 / NC

GND

P15 / NC

P13 / PE0 / I2C_SDA

P11 / PD5

P9 / PD4

P7 / PD3

P5 / PD2 / SD_CLK / DISP_SCLK

P3 / PD1 / SD_MISO

P1 / PD0 / SD_MOSI / DISP_SI

GND

GND

5V

5V

NCNC

P45 / NCNC / P44

P43 / NCNC / P42

P41 / NCNC / P40

3V33V3

P39 / PC15 / DISP_COMNC / P38

P37 / PC9 / SENSOR_ENNC / P36

P35 / PC14 / DISP_SCSNC / P34

P33 / PC13 / DISP_ENNC / P32

P31 / PD7 / SD_CSWIFI_CS / P30

P29 / PD6 / SD_CDWIFI_CLK / P28

P27 / PE11 / VCOM_RXWIFI_MOSI / P26

P25 / PE10 / VCOM_TXWIFI_MISO / P24

GNDGND

VRF

GND

VMCU

VCOM_EN / PE2 / P22

LED1 / PC1 / P20

LED0 / PC0 / P18

BUTTON1 / PA6 / P16

GND

BUTTON0 / PA2 / P14

I2C_SCL / PE1 / P12

VCOM_RTS / PE13 / P10

VCOM_CTS / PE12 / P8

PE15 / P6

PE14 / P4

PB12 / P2

PB11 / P0

VRF

J101

J102

UG172: Wizard Gecko Wi-Fi® Module Wireless Starter Kit SLWSTK6120A User's Guide

Connectors

4. Connectors

This chapter gives you an overview of the Wireless Starter Kit Mainboard connectivity. The placement of the connectors can be seen in
the figure below.

4.1 Breakout pads

of

Most

the WGM110's pins are routed from the Radio Board to breakout pads at the top and bottom edges of the Wireless Starter Kit
Mainboard. 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 WGM110 map out to the pin numbers printed on the breakout pads. To see the available functions on each, please refer to the
WGM110 Data Sheet.

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Figure 4.2 Radio Board Pin Mapping on Breakout Pads

Figure 4.1 Connector Layout

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12

4

8
6

10

3

5

9
7

12

13

14

11

1516

17

18

20 19

VMCU

PD0

PD1

PD2

PD3

PD4

PD5

PE0

5V

3V3

GND

PB1

1

PB12

PE14

PE15

PE12

PE13

PE1

Board ID SDA
Board ID SCL

Reserved (Board Identification)

WGM1

10 I/O Pin

Alternate function

/
/
/

/

/

/

/

SPI_MOSI

SPI_MISO

SPI_SCK

SPI_CS

UAR

T_TX

U

ART_RX

I2C_SDA

/
/
/

/

/

/

/

GPIO

GPIO

GPIO

GPIO

(VCOM_CTS)

(VCOM_RTS)

I2C_SCL

UG172: Wizard Gecko Wi-Fi® Module Wireless Starter Kit SLWSTK6120A User's Guide

Connectors

4.2 Expansion Header

right hand side of the board an angled 20-pin expansion header is provided to allow connection of peripherals or plug-in boards.

On the
The connector contains a number of I/O pins that can be used with most of the WGM110 Wizard 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 I/O. 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 for the Wizard Gecko Wi-Fi Module Wireless Starter Kit. Because
of limitations in the number of available GPIO pins, some of the expansion header pins are shared with kit features.

Figure 4.3 Expansion Header

The pin-routing available on the WGM110 Module is very flexible, so most peripherals can be routed to any pin. However, many pins
are

between the Expansion Header and other functions on the Wireless STK Mainboard. Table 4.1 Expansion Header Pinout on

shared

page 5 includes an overview of the mainboard features that share pins with the Expansion Header.

Table 4.1. Expansion Header Pinout

Pin Connection EXP Header function Shared feature Peripheral mapping

4 PD0 SPI_MOSI SD_MOSI / DISP_SI USART1 TX Location 1

6 PD1 SPI_MISO SD_MISO USART1 RX Location 1

8 PD2 SPI_SCLK SD_CLK / DISP_SCLK USART1_CLK Location 1

10 PD3 SPI_CS USART1_CS Location 1

12 PD4 UART_TX USART0_TX Location 0

14 PD5 UART_RX USART0_RX Location 0

16 PE0 I2C_SDA SENSOR_I2C_SDA I2C1_SDA Location 2

3 PB11 GPIO

5 PB12 GPIO

7 PE14 GPIO

9 PE15 GPIO

11 PE12 GPIO VCOM_CTS

13 PE13 GPIO VCOM_RTS

15 PE1 I2C_SCL SENSOR_I2C_SCL I2C1_SCL Location 2

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4.3 Debugging

1 2

4

8

6

10

3
5

9

12

13

14

1

1

15 16
17

18

20

19

TMS / SWDIO / C2D
TCK / SWCLK / C2CK
TDO /

SWO

TDI / C2Dps

TRACECLK
TRACED0
TRACED1
TRACED2
TRACED3

RESET / C2CKps

Vdevice

GND

NC

Cable Detect

NC
NC

GND

GND

GND

7

GND

UG172: Wizard Gecko Wi-Fi® Module Wireless Starter Kit SLWSTK6120A User's Guide

Connectors

Note: The Wireless

Starter Kit Mainboard does not support this feature when used together with the Wizard Gecko WGM110 Module;

however, BGTool can be used to debug BGAPI commands and error situations.

Note: For more information on BGTool go to Silicon Labs web page http://www.silabs.com/start-wgm and download the UG160: Wizard
Gecko BGTool™ User's Guide.

The Debug Connector serves a dual purpose. Based on the "debug mode", which can be set up using Simplicity Studio. In the "Debug
IN" mode this connector allows an external debug emulator to be used with the on-board WGM110. In the "Debug OUT" mode this
connector allows the kit to be used as a debugger towards an external target. In the "Debug MCU" (default) mode this connector is
isolated from the debug interface of both the Board Controller and the on-board target device.

"The Debug Connector has three 'debug modes,' which are set using Simplicity Studio. The 'Debug MCU' mode is default and the two
other modes ('Debug IN' and 'Debug OUT') are set using Simplicity Studio.

Because this connector is automatically switched to support the different operating modes, it is only available when the Board Controller
is powered (J-Link USB cable connected). If debug access to the target device is required when the Board Controller is unpowered, this
should be done by connecting 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.

Note that the pin-out matches the pin-out 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.

Pin number(s) Function Note

1 VTARGET Target voltage on the debugged application.

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 ETM Trace Clock

14 TRACED0 ETM Trace Data 0

16 TRACED1 ETM Trace Data 1

18 TRACED2 ETM Trace Data 2

20 TRACED3 ETM Trace Data 3

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Figure 4.4 Debug Connector

Table 4.2. Debug Connector Pin Descriptions

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UG172: Wizard Gecko Wi-Fi® Module Wireless Starter Kit SLWSTK6120A User's Guide

Connectors

Pin number(s) Function Note

9 Cable detect This signal must be pulled to ground by the external debugger or application for ca-

ble insertion detection.

11, 13 NC Not connected

3, 5, 15, 17, 19 GND

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