Silicon Labs SiM3U1xx 32-bit MCU USB Development Kit

Overview

This is a development kit [3] that is used to develop software for the SiM3U1xx MCUs.

../../../../../_images/sim3u1xx_dk.webp

Hardware

  • Silicon Labs SiM3U167-B-GM SoC

  • CPU core: ARM Cortex®-M3

  • Flash memory: 256 kB

  • RAM: 32 kB

  • IO:

    • 2x user LEDs

    • 2x user push buttons

    • 2x power LEDs

    • Reset push button

    • Potentiometer

    • Analog terminals

    • Capacitive sensing slider and button

    • USB virtual COM port

For more information about the SiM3U167 SoC and the SiM3U1xx board, refer to these documents:

Supported Features

The board configuration supports the following hardware features:

Interface

Controller

Driver/Component

NVIC

on-chip

nested vector interrupt controller

SYSTICK

on-chip

systick

DMA

on-chip

dma

FLASH

on-chip

flash memory

GPIO

on-chip

gpio

UART

on-chip

serial port-polling; serial port-interrupt

Connections and IOs

Pin

Name

Note

PB1.12

TX (O)

Serial connection to host via USB virtual COM port

PB1.13

RX (I)

PB1.14

RTS (O)

PB1.15

CTS (I)

PB2.8

Push button switch (SW2)

PB2.9

Push button switch (SW3)

PB2.10

Red LED (DS3)

PB2.11

Yellow LED (DS4)

PB1.5

Potentiometer

PB2.12

Potentiometer bias

Programming and Debugging

Flashing

The sample application Hello World is used for this example. Build the Zephyr kernel and application:

# From the root of the zephyr repository
west build -b sim3u1xx_dk samples/hello_world

Connect the sim3u1xx_dk to your host computer using both USB port and you should see a USB serial connection.

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! sim3u1xx_dk/sim3u167

References