SiM3U1xx 32-bit MCU USB Development Kit

Overview

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

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 sim3u1xx_dk 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.

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

The sim3u1xx_dk board supports the runners and associated west commands listed below.

flash debug

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