Thunderboard Sense 2 Sensor-to-Cloud Advanced IoT

Hardware

Platform Silicon Labs EFM32: Silicon Labs EFM32 Gecko 32-bit microcontroller (MCU) family includes devices that offer flash memory configurations up to 256 kB, 32 kB of RAM and CPU speeds up to 48 MHz. Based on the powerful ARM Cortex-M core, the Gecko family features innovative low energy techniques, short wake-up time from energy saving modes and a wide selection of peripherals, making it ideal for battery operated applications and other systems requiring high performance and low-energy consumption.

Microcontroller	EFR32MG12P432F1024
Frequency	40MHz
Flash	1MB
RAM	256KB
Vendor	Silicon Labs

Configuration

Please use tb_sense_12 ID for board option in “platformio.ini” (Project Configuration File):

[env:tb_sense_12]
platform = siliconlabsefm32
board = tb_sense_12

You can override default Thunderboard Sense 2 Sensor-to-Cloud Advanced IoT settings per build environment using board_*** option, where *** is a JSON object path from board manifest tb_sense_12.json. For example, board_build.mcu, board_build.f_cpu, etc.

[env:tb_sense_12]
platform = siliconlabsefm32
board = tb_sense_12

; change microcontroller
board_build.mcu = EFR32MG12P432F1024

; change MCU frequency
board_build.f_cpu = 40000000L

Uploading

Thunderboard Sense 2 Sensor-to-Cloud Advanced IoT supports the following uploading protocols:

• blackmagic

• jlink

• mbed

Default protocol is mbed

You can change upload protocol using upload_protocol option:

[env:tb_sense_12]
platform = siliconlabsefm32
board = tb_sense_12

upload_protocol = mbed

Debugging

Debugging - “1-click” solution for debugging with a zero configuration.

Warning

You will need to install debug tool drivers depending on your system. Please click on compatible debug tool below for the further instructions and configuration information.

You can switch between debugging Tools & Debug Probes using debug_tool option in “platformio.ini” (Project Configuration File).

Thunderboard Sense 2 Sensor-to-Cloud Advanced IoT has on-board debug probe and IS READY for debugging. You don’t need to use/buy external debug probe.

Compatible Tools	On-board	Default
Black Magic Probe
J-LINK	Yes	Yes

Frameworks

Name	Description
Mbed	Arm Mbed OS is a platform operating system designed for the internet of things
Zephyr	Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures