Arduino Nano Matter

Overview

The Nano Matter merges the well-known Arduino way of making complex technology more accessible with the powerful MGM240S from Silicon Labs, to bring Matter closer to the maker world, in one of the smallest form factors in the market.

It enables 802.15.4 (Thread®) and Bluetooth® Low Energy connectivity, to interact with Matter-compatible devices with a user-friendly software layer ready for quick prototyping.

The Nano Matter features a compact and efficient architecture powered by the MGM240S (32-bit Arm® Cortex®-M33) from Silicon Labs, a high-performance wireless module optimized for the needs of battery and line-powered IoT devices for 2.4 GHz mesh networks.

Hardware

MGM240SD22VNA2 Mighty Gecko SiP
CPU core: ARM Cortex®-M33 with FPU
Flash memory: 1536 kB
RAM: 256 kB
Transmit power: up to +20 dBm
Operation frequency: 2.4 GHz
Crystals for LFXO (32.768 kHz) and HFXO (39 MHz).
User RGB LED
User button

For more information about the EFR32MG24 SoC and the Arduino Nano Matter, refer to these documents:

Supported Features

The arduino_nano_matter 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.

arduino_nano_matter

/

mgm240sd22vna

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M33 CPU1	`arm,cortex-m33`
ADC	on-chip	Silicon Labs Series 2 IADC1	`silabs,gecko-iadc`
Bluetooth	on-chip	Silicon Labs Series 2 Bluetooth HCI1	`silabs,bt-hci-efr32`
Clock control	on-chip	Silicon Labs Series 2 CMU1	`silabs,series-clock`
	on-chip	Generic fixed-rate clock provider3	`fixed-clock`
	on-chip	Silicon Labs Series 2 HFXO1	`silabs,hfxo`
	on-chip	Silicon Labs Series 2 LFXO1	`silabs,series2-lfxo`
	on-chip	Silicon Labs Series 2 HFRCODPLL1	`silabs,series2-hfrcodpll`
	on-chip	Silicon Labs Series 2 HFRCOEM231	`silabs,series2-hfrcoem23`
	on-chip	Silicon Labs Series 2 LFRCO1	`silabs,series2-lfrco`
	on-chip	Generic fixed factor clock provider20	`fixed-factor-clock`
Comparator	on-chip	Silicon Labs Series 2 ACMP1	`silabs,acmp`
Cryptographic accelerator	on-chip	Silicon Labs Series 2 SE Mailbox1	`silabs,gecko-semailbox`
Debug	on-chip	Silicon Labs Packet Trace Interface1	`silabs,pti`
Debug	on-chip	ARMv8 instrumentation trace macrocell1	`arm,armv8m-itm`
DMA	on-chip	Silicon Labs Series 2 LDMA1	`silabs,ldma`
Flash controller	on-chip	Silicon Labs Series 2 MSC1	`silabs,series2-flash-controller`
GPIO & Headers	on-chip	Silicon Labs Series 0-2 GPIO Peripheral1	`silabs,gecko-gpio`
GPIO & Headers	on-chip	Silicon Labs Series 0-2 GPIO Port4	`silabs,gecko-gpio-port`
I2C	on-chip	Silicon Labs Series 0-2 I2C1	`silabs,gecko-i2c`
Input	on-board	Group of GPIO-bound input keys1	`gpio-keys`
Interrupt controller	on-chip	ARMv8-M NVIC (Nested Vectored Interrupt Controller)1	`arm,v8m-nvic`
LED	on-board	Group of GPIO-controlled LEDs1	`gpio-leds`
LED	on-board	Group of PWM-controlled LEDs1	`pwm-leds`
MTD	on-chip	Flash node1	`soc-nv-flash`
MTD	on-board	Fixed partitions of a flash (or other non-volatile storage) memory1	`fixed-partitions`
Networking	on-chip	Silicon Labs Series 2 Radio Interface1	`silabs,series2-radio`
Pin control	on-chip	Silicon Labs Series 2 DBUS Pin Controller1	`silabs,dbus-pinctrl`
PWM	on-chip	Silicon Labs TIMER PWM1 4	`silabs,timer-pwm`
PWM	on-chip	Silicon Labs LETIMER PWM1	`silabs,letimer-pwm`
Regulator	on-chip	Silicon Labs Series 2 DC-DC converter1	`silabs,series2-dcdc`
RTC	on-chip	Silicon Labs Series 2 Sleeptimer1	`silabs,gecko-stimer`
Serial controller	on-chip	Silicon Labs Series 2 USART1	`silabs,usart-uart`
Serial controller	on-chip	Silicon Labs Series 2 EUSART 1	`silabs,eusart-uart`
SPI	on-chip	Silicon Labs Series 2 EUSART 1	`silabs,eusart-spi`
SRAM	on-chip	Generic on-chip SRAM1	`mmio-sram`
Timer	on-chip	ARMv8-M System Tick1	`arm,armv8m-systick`
	on-chip	Silicon Labs TIMER1 4	`silabs,series2-timer`
	on-chip	Silicon Labs Series 2 BURTC1	`silabs,gecko-burtc`
	on-chip	Silicon Labs LETIMER1	`silabs,series2-letimer`
Watchdog	on-chip	Silicon Labs Series 1-2 WDOG1 1	`silabs,gecko-wdog`

Connections and IOs

In the following table, the column Name contains Pin names. For example, PA2 means Pin number 2 on PORTA, as used in the board’s datasheets and manuals.

Name	Function	Usage
PC1	GPIO	LED0
PC2	GPIO	LED1
PC3	GPIO	LED2
PA0	GPIO	Button
PC4	USART0_TX	UART Console TX
PC5	USART0_RX	UART Console RX

System Clock

The MGM240S SiP is configured to run at 78 MHz using DPLL and the 39 MHz internal oscillator.

Serial Port

The MGM240S SiP has one USART and two EUSARTs. USART0 is connected to the board controller and is used for the console.

Programming and Debugging

The Arduino Nano Matter contains an SAMD11 with CMSIS-DAP, allowing flashing, debugging, logging, etc. over the USB port. Doing so requires a version of OpenOCD that includes support for the flash on the MG24 MCU. Until those changes are included in stock OpenOCD, the version bundled with Arduino can be used, or can be installed from the OpenOCD Arduino Fork. When flashing, debugging, etc. you may need to include --openocd=/usr/local/bin/openocd --openocd-search=/usr/local/share/openocd/scripts/ options to the command.

Flashing

Connect the Arduino Nano Matter board to your host computer using the USB port. A USB CDC ACM serial port should appear on the host, that can be used to view logs from the flashed application.

Here is an example for the Hello World application.

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

Open a serial terminal (minicom, putty, etc.) connecting to the UCB CDC ACM serial port.

Reset the board and you should see the following message in the terminal:

Hello World! arduino_nano_matter