Here is a list of all documented files with brief descriptions:

[detail level 12345678]

▼ spresense
▼ externals
▼ libjpeg
cderror.h
cdjpeg.h
jconfig.h
jdct.h
jerror.h
jinclude.h
jmemsys.h
jmorecfg.h
jpegint.h
jpeglib.h
jversion.h
transupp.h
▼ nuttx
▼ arch
▼ arm
► include
► cxd56xx
adc.h
audio.h
backuplog.h
battery_ioctl.h
chip.h
cisif.h
crashdump.h
cxd56_audio_lower.h
ge2d.h
geofence.h
gnss.h
gnss_type.h
gnssram.h
hostif.h
irq.h
nxaudio.h
pin.h
pm.h
scu.h
timer.h
uart0.h
usbdev.h
▼ boards
▼ arm
► cxd56xx
► spresense
► include
board.h
board_lcdpins.h
board_pinconfig.h
cxd56_ak09912.h
cxd56_alt1250.h
cxd56_apds9930.h
cxd56_apds9960.h
cxd56_audio.h
cxd56_automount.h
cxd56_bcm20706.h
cxd56_bh1721fvc.h
cxd56_bh1745nuc.h
cxd56_bm1383glv.h
cxd56_bm1422gmv.h
cxd56_bmi160.h
cxd56_bmi270.h
cxd56_bmp280.h
cxd56_charger.h
cxd56_clock.h
cxd56_cxd5602pwbimu.h
cxd56_emmcdev.h
cxd56_flash.h
cxd56_gauge.h
cxd56_gnss_addon.h
cxd56_gpioif.h
cxd56_gs2200m.h
cxd56_i2cdev.h
cxd56_imageproc.h
cxd56_isx012.h
cxd56_isx019.h
cxd56_kx022.h
cxd56_lt1pa01.h
cxd56_nrc7292.h
cxd56_power.h
cxd56_pwm.h
cxd56_rpr0521rs.h
cxd56_scd41.h
cxd56_sdcard.h
cxd56_sensors.h
cxd56_spidev.h
cxd56_spisd.h
cxd56_wdt.h
cxd56_wiznet.h
▼ include
▼ nuttx
► video
edid.h
fb.h
goldfish_camera.h
imgdata.h
imgsensor.h
isx012.h
isx019.h
max7456.h
mipi_display.h
mipi_dsi.h
ov2640.h
rfb.h
rgbcolors.h
vesagtf.h
video.h
video_controls.h
videomode.h
vnc.h
► wireless
► lte
lte.h
lte_ioctl.h
▼ sdk
▼ apps
▼ include
► lte
lapi.h
lte_api.h
lte_fw_def.h
lte_fwupdate.h	LTE library for LTE firmware update
lte_log.h	LTE library for LTE firmware log
lte_lwm2m.h	LwM2M API definitions provided by Modem
▼ modules
▼ include
► asmp
asmp.h
delay.h
mpmq.h
mpmutex.h
mpshm.h
mpsignal.h
mptask.h
stdio.h
types.h
► audio
► dsp_framework
customproc_command_base.h
customproc_dsp_ctrl.h
customproc_dsp_userproc_if.h
► utilities
frame_samples.h
playlist.h
wav_containerformat.h
wav_containerformat_common.h
wav_containerformat_parser.h
audio_capture_api.h	CXD5602 Audio Capture API
audio_command_id.h	CXD5602 Audio Command ID
audio_common_defs.h	CXD5602 Audio Common Definitions
audio_effector_api.h	CXD5602 Audio Effector API
audio_frontend_api.h	CXD5602 Audio Mic Frontend API
audio_high_level_api.h	CXD5602 Audio High Level API
audio_message_types.h
audio_object_common_api.h	CXD5602 Audio Object Layer API
audio_outputmix_api.h	CXD5602 Audio OutputMix API
audio_player_api.h	CXD5602 Audio Player API
audio_recognizer_api.h	CXD5602 Audio Recognizer API
audio_recorder_api.h	CXD5602 Audio Recorder API
audio_renderer_api.h	CXD5602 Audio Renderer API
audio_synthesizer_api.h	CXD5602 Audio Synthesizer API
► audiolite
al_audiodrv.h
al_component.h
al_debug.h
al_decoder.h
al_encoder.h
al_eventlistener.h
al_evthandler.h
al_inputcomp.h
al_inputnode.h
al_memalloc.h
al_mp3dec.h
al_nodecomm.h
al_outputcomp.h
al_outputnode.h
al_singleton.h
al_stream.h
al_thread.h
al_wavdec.h
al_wavenc.h
al_wavheader.h
al_worker.h
al_workercmd.h
al_workercomp.h
alworker_comm.h
audiolite.h
sprmp3dec_qsize.h
► bluetooth
► hal
bt_event.h	Bluetooth HAL I/F for event handler
bt_if.h	Bluetooth HAL I/F
ble_gatt.h	Bluetooth Low Energy GATT Server/Client API
ble_params.h	Bluetooth LE header for SDK on Spresense
ble_util.h
bluetooth.h	Bluetooth common header for SDK on Spresense
bt_a2dp.h	A2DP API
bt_a2dp_codecs.h	Bluetooth A2DP common header for SDK on Spresense
bt_avrcp.h	AVRCP API
bt_avrcp_cmds.h	AVRCP command I/F
bt_common.h	Bluetooth generic API
bt_hfp.h	HFP API
bt_hfp_features.h	Bluetooth HFP common header for SDK on Spresense
bt_spp.h	SPP API
► digital_filter
edge_detection.h
fir_decimator.h
fir_filter.h
► dnnrt
runtime.h
► fwuputils
fwup_client.h
► gpsutils
cxd56_gnss_nmea.h
► lte
lte_compat.h
► memutils
► common_utils
common_assert.h
common_errcode.h
common_macro.h
common_types.h
► memory_manager
Manager.h	Memory Manager API
MemHandle.h	Memory Handler API
MemHandleBase.h	Memory Manager Lite Memory Handle Base class API
MemManager.h
MemMgrTypes.h	Types definitions for "Memory Manager"
MemPool.h
RuntimeQue.h
► message
AssertInfo.h
BasicQueue.h
cache.h
Message.h	Message Library API
message_type.h
MsgLog.h
MsgNotify.h
MsgPacket.h
MsgQue.h
MsgQueBlock.h	Message Library API
type_holder.h
► os_utils
chateau_osal.h
cpp_util.h
os_wrapper.h
► s_stl
buffer.h
queue.h
s_stl_config.h
► simple_fifo
CMN_SimpleFifo.h	CXD5602 Sipmle Fifo API
► mm
tile.h
► mpcomm
mpcomm.h
supervisor.h
► ringbuffer
ringbuffer.h
► sdk
config.h
debug.h
► sensing
► logical_sensor
arm_gesture.h
arm_gesture_command.h
barometer.h
compass.h
compass_command.h
physical_command.h
sensor_assertion.h
sensor_command.h
step_counter.h
step_counter_command.h
transport_mode.h
transport_mode_command.h
sensor_api.h
sensor_ecode.h
sensor_id.h
sensor_message_types.h
tap.h
tap_manager.h
► sw_peripherals
sw_spi.h
► tflmrt
runtime.h
► utils
► uconv
uconv.h
▼ system
▼ include
► system
xmodem.h