WGM160P Wi-Fi Module (SLWRB4321A)

Board Overview

WGM160P Wi-Fi Module (SLWRB4321A)

Name:

slwrb4321a

Vendor:

Silicon Laboratories

Architecture:

arm

SoC:

efm32gg11b820f2048gm64

Browse board sources

Overview

The WGM160P Starter Kit SLWSTK6121A comes with the BRD4321A radio board. This radio boards contains a WGM160P module, which combines the WF200 Wi-Fi transceiver with an EFM32GG11 microcontroller.

Hardware

• Advanced Energy Monitoring provides real-time information about the energy consumption of an application or prototype design.

• Ultra low power 128x128 pixel color Memory-LCD

• 2 user buttons and 2 LEDs

• Si7021 Humidity and Temperature Sensor

• On-board Segger J-Link USB and Ethernet debugger

• 10/100Base-TX ethernet PHY and RJ-45 jack (on included expansion board)

• MicroSD card slot

• USB Micro-AB connector

For more information about the WGM160P and SLWSTK6121A board:

• WGM160P Website

• WGM160P Datasheet

• SLWSTK6121A Website

• SLWSTK6121A User Guide

• EFM32GG11 Datasheet

• EFM32GG11 Reference Manual

• WF200 Datasheet

Supported Features

The slwrb4321a board supports the hardware features listed below.

on-chip / on-board

Feature integrated in the SoC / present on the board.

2 / 2

Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.

vnd,foo

Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

slwrb4321a/efm32gg11b820f2048gm64 target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M4F CPU1	arm,cortex-m4f
Ethernet	on-chip	SiLabs Gecko Ethernet1	silabs,gecko-ethernet
Flash controller	on-chip	Silicon Labs Gecko flash controller1	silabs,gecko-flash-controller
GPIO & Headers	on-chip	SiLabs Gecko GPIO1	silabs,gecko-gpio
	on-chip	SiLabs Gecko GPIO Port6 3	silabs,gecko-gpio-port
I2C	on-chip	Silabs Gecko I2C2 1	silabs,gecko-i2c
Input	on-board	Group of GPIO-bound input keys1	gpio-keys
Interrupt controller	on-chip	ARMv7-M NVIC (Nested Vectored Interrupt Controller)1	arm,v7m-nvic
LED	on-board	Group of GPIO-controlled LEDs1	gpio-leds
MTD	on-chip	Flash node1	soc-nv-flash
	on-board	Fixed partitions of a flash (or other non-volatile storage) memory1	fixed-partitions
Pin control	on-chip	The Silabs pin controller is a singleton node responsible for controlling pin function selection and pin properties1	silabs,gecko-pinctrl
RNG	on-chip	GECKO TRNG (True Random Number Generator)1	silabs,gecko-trng
RTC	on-chip	Silabs Gecko RTCC (Real-Time Counter)1	silabs,gecko-rtcc
Serial controller	on-chip	Gecko UART2	silabs,gecko-uart
	on-chip	Gecko USART1 5	silabs,gecko-usart
	on-chip	Gecko LEUART2	silabs,gecko-leuart
SRAM	on-chip	Generic on-chip SRAM description1	mmio-sram
Timer	on-chip	ARMv7-M System Tick1	arm,armv7m-systick
Watchdog	on-chip	Silicon Labs Gecko Family Watchdog driver1 1	silabs,gecko-wdog

Connections and IOs

The WGM160P’s EFM32GG11 SoC has six GPIO controllers (PORTA to PORTF), all of which are currently enabled for the SLWSTK6121A board.

In the following table, the column Name contains pin names. For example, PE1 means pin number 1 on PORTE, as used in the board’s datasheets and manuals.

Name	Function	Usage
PA4	GPIO	LED0
PA5	GPIO	LED1
PD6	GPIO	Push Button PB0
PD8	GPIO	Push Button PB1
PE7	UART_TX	UART TX Console VCOM_TX US0_TX #1
PE6	UART_RX	UART RX Console VCOM_RX US0_RX #1
PB11	I2C_SDA	SENSOR_I2C_SDA I2C1_SDA #1
PB12	I2C_SCL	SENSOR_I2C_SCL I2C1_SCL #1

System Clock

The EFM32GG11 SoC is configured to use the 50 MHz external oscillator on the board.

Serial Port

The EFM32GG11 SoC has four USARTs, two UARTs and two Low Energy UARTs (LEUART). USART0 is connected to the board controller and is used for the console.

Programming and Debugging

Note

Before using the kit the first time, you should update the J-Link firmware in Simplicity Studio.

Flashing

The SLWSTK6121A includes an J-Link serial and debug adaptor built into the board. The adaptor provides:

• A USB connection to the host computer

• A physical UART connection which is relayed over interface USB serial port.

Flashing an application to SLWSTK6121A

Connect the SLWSTK6121A to your host computer using the USB port.

Here is an example to build and flash the Hello World application.

# From the root of the zephyr repository
west build -b slwrb4321a samples/hello_world
west flash

Open a serial terminal (minicom, putty, etc.) with the following settings:

• Speed: 115200

• Data: 8 bits

• Parity: None

• Stop bits: 1

Reset the board and you’ll see the following message on the corresponding serial port terminal session:

Hello World! slwrb4321a