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

[detail level 12345]

src
hal
Arduino
ArduinoHal.h
ESP-IDF
EspHal.h
RPi
PiHal.h
RPiPico
PicoHal.h
Stm32duino
Stm32wlHal.h
modules
CC1101
CC1101.h
LLCC68
LLCC68.h
LR11x0
firmware
lr1110_transceiver_0303.h
lr1110_transceiver_0304.h
lr1110_transceiver_0305.h	Firmware transceiver version 0x0305 for LR1110 radio
lr1110_transceiver_0306.h	Firmware transceiver version 0x0306 for LR1110 radio
lr1110_transceiver_0307.h	Firmware transceiver version 0x0307 for LR1110 radio
lr1110_transceiver_0308.h
lr1110_transceiver_0401.h	Firmware transceiver version 0x0401 for LR1110 radio
lr1110_transceiver_0402.h	Firmware transceiver version 0x0402 for LR1110 radio
lr1120_transceiver_0101.h	Firmware transceiver version 0x0101 for LR1120 radio
lr1120_transceiver_0102.h	Firmware transceiver version 0x0102 for LR1120 radio
lr1120_transceiver_0201.h	Firmware transceiver version 0x0201 for LR1120 radio
lr1120_transceiver_0202.h	Firmware transceiver version 0x0202 for LR1120 radio
lr1121_transceiver_0102.h
lr1121_transceiver_0103.h	Firmware transceiver version 0x0103 for LR1121 radio
lr1121_transceiver_0104.h	Firmware transceiver version 0x0104 for LR1121 radio
LR1110.h
LR1120.h
LR1121.h
LR11x0.h
LR11x0_commands.h
LR11x0_firmware.h
LR11x0_registers.h
LR11x0_types.h
LR_common.h
LR2021
LR2021.h
LR2021_commands.h
LR2021_registers.h
LR2021_types.h
nRF24
nRF24.h
RF69
RF69.h
RFM2x
RFM22.h
RFM23.h
Si443x
Si4430.h
Si4431.h
Si4432.h
Si443x.h
SX123x
SX1231.h
SX1233.h
SX126x
patches
SX126x_patch_scan.h
STM32WLx.h
SX1261.h
SX1262.h
SX1268.h
SX126x.h
SX126x_commands.h
SX126x_registers.h
SX127x
SX1272.h
SX1273.h
SX1276.h
SX1277.h
SX1278.h
SX1279.h
SX127x.h
SX128x
SX1280.h
SX1281.h
SX1282.h
SX128x.h
protocols
ADSB
ADSB.h
AFSK
AFSK.h
APRS
APRS.h
AX25
AX25.h
BellModem
BellModem.h
ExternalRadio
ExternalRadio.h
FSK4
FSK4.h
Hellschreiber
Hellschreiber.h
LoRaWAN
LoRaWAN.h
LoRaWANPackageTS003.h
LoRaWANPackageTS009.h
LoRaWANPacMan.h
Morse
Morse.h
Pager
Pager.h
PhysicalLayer
PhysicalLayer.h
Print
ITA2String.h
Print.h
RTTY
RTTY.h
SSDV
SSDV.h
SSTV
SSTV.h
utils
BCH.h
ConvCode.h
CRC.h
Cryptography.h
ReedSolomon.h
Utils.h
BuildOpt.h
BuildOptUser.h
Hal.h
Module.h
RadioLib.h
TypeDef.h