Here is a list of all files with brief descriptions:

[detail level 12345]

▼ include
▼ libopencm3
▼ cm3
assert.h
common.h
cortex.h
doc-cm3.h
dwt.h
fpb.h
itm.h
cm3/memorymap.h
mpu.h
cm3/nvic.h
scb.h
scs.h
sync.h
systick.h
tpiu.h
vector.h	Definitions for handling vector tables
▼ dispatch
dispatch/nvic.h
▼ efm32
▼ common
gpio_common_hglg.h
timer_common.h
▼ hg
hg/cmu.h
doc-efm32hg.h
hg/gpio.h
efm32/hg/memorymap.h
efm32/hg/nvic.h
hg/timer.h
hg/usb.h
wdog.h
cmu.h
gpio.h
efm32/memorymap.h	Dispatcher for the base address definitions, depending on the particular Gecko family
timer.h
usb.h
▼ usb
▼ dwc
otg_common.h
otg_fs.h
audio.h
cdc.h
hid.h
midi.h
msc.h
usbd.h
usbstd.h
▼ lib
▼ cm3
assert.c
dwt.c
nvic.c
scb.c
sync.c
systick.c
vector.c
▼ dispatch
vector_chipset.c
dispatch/vector_nvic.c
▼ efm32
▼ common
gpio_common.c
timer_common.c
▼ hg
cmu.c
efm32/hg/vector_nvic.c
▼ usb
usb.c
usb_audio.c
usb_cdc.c
usb_control.c
usb_dwc_common.c
usb_efm32hg.c
usb_hid.c
usb_midi.c
usb_msc.c
usb_standard.c