SparkFun Thing Plus Matter
Overview
The MGM240P Mighty Sparkfun Think Plus Matter contains a Wireless System-On-Chip from the EFR32MG24 family built on an ARM Cortex®-M33F processor with excellent low power capabilities.
MGM240P Sparkfun Think Plus Matter (image courtesy of Sparkfun)
Hardware
Based on the Series 2 EFR32MG24 SoC
CPU core: 32-bit ARM® Cortex®-M33 core at 39 MHz
Flash memory: 1536 kB
RAM: 256 kB
Supports Multiple 802.15.4 Wireless Protocols (Zigbee and OpenThread)
Bluetooth Low Energy 5.3
Crystals for LFXO (32 kHz) and HFXO (39 MHz).
For more information about the EFR32MG24 SoC and BRD2601B board, refer to these documents:
Supported Features
The board configuration supports the following hardware features:
Interface |
Controller |
Driver/Component |
|---|---|---|
COUNTER |
on-chip |
stimer |
FLASH |
on-chip |
flash memory |
GPIO |
on-chip |
gpio |
UART |
on-chip |
serial |
TRNG |
on-chip |
semailbox |
WATCHDOG |
on-chip |
watchdog |
I2C(M/S) |
on-chip |
i2c |
RADIO |
on-chip |
bluetooth |
Other hardware features are currently not supported by the port.
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 |
|---|---|---|
PA8 |
GPIO |
LED0 |
PA5 |
USART0_TX |
UART Console EFM_BC_TX US0_TX |
PA6 |
USART0_RX |
UART Console EFM_BC_RX US0_RX |
The default configuration can be found in boards/sparkfun/thing_plus_matter_mgm240p/sparkfun_thing_plus_matter_mgm240p_defconfig
System Clock
The EFR32MG24 SoC is configured to use the 39 MHz external oscillator on the board.
Serial Port
The EFR32MG24 SoC has one USART and two EUSARTs. 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 from J-Link-Downloads
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 sparkfun_thing_plus_mgm240p samples/hello_world
Connect the sparkfun_thing_plus_mgm240p to your host computer using the USB port and you should see a USB 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! _sparkfun_thing_plus_matter_mgm240p
Bluetooth
To use the BLE function, run the command below to retrieve necessary binary blobs from the SiLabs HAL repository.
west blobs fetch silabs
Then build the Zephyr kernel and a Bluetooth sample with the following command. The Observer sample application is used in this example.
# From the root of the zephyr repository
west build -b sparkfun_thing_plus_matter_mgm240p samples/bluetooth/observer