Gecko Loader

CLI and GUI utility to upload code to EFM32 microcontrollers (Silicon Labs) through the UART or USB bootloader.

A blog post about it: http://theramblingness.com/2015/07/16/a-gui-and-cli-utility-for-efm32s-uart-bootloader/

CLI mode usage

UART: gecko_loader.exe <port_name> <bin_file> uart <boot_pol>
USB:  gecko_loader.exe <port_name> <bin_file> usb

GUI mode

Don't pass any arguments and the GUI will show up.

Hardware connections:

TX  -- BOOT_RX (E11)
RX  -- BOOT_TX (E10)
DTR -- BOOT_EN (DBG_SWCLK)
RTS -- RESET

Other considerations:

In order to prevent the bootloader from being overwritten, the linker script must be modified as described on application note AN0003