Generic implementation of Arduino for EFM32 boards using Silabs Gecko_SDK.
- Download the latest version from https://github.com/huaweiwx/ARDUINO_EFM32
- Unzip it into [Arduino]/hardware folder (Arduino must be ver1.8.5 or newer).
- Unzip hardware/tools/win/jlink502.rar to hardware/tools/win/jlink502 folder.
- Install Arduino Zero or Arduino Sam from the board manager for the arm-none-eabi-gcc compiler.
- Download the GNU ARM Embedded Toolchain. Recommended use GCC ver 5.4.1-2016q2.