FAT File System console example.

This example project use EFM32 CMSIS and the emlib peripheral library
to demonstrate SPI-access to the Micro-SD card on the EFM32WG-DK3850
development kit. The application gives a small "console" on the serial
port which can be used to view and list contents of the file system.
Serial configuration 115200-8-N-1 is used.

Board:  Silicon Labs EFM32WG-DK3850 Development Kit
Device: EFM32WG990F256

