HDMI-CEC messages reported by Pulse-Eight USB-CEC Adapter when pressing the buttons on Samsung BN59-01268D infrared remote control.
Tested on Samsung SmartTV LT27H390S, software version 1280.5, connected to PC via HDMI1.
USB-CEC Adapter firmware v9, libCEC v4.0.3, configured as Recording device.
Author: Michael Miloslavsky, February 2020.


REMOTE CONTROL KEY      USB-CEC ADAPTER MESSAGE

POWER                   0f:36
SOURCE                  None until some input selected

1                       01:44:21
2                       01:44:22
3                       01:44:23
4                       01:44:24
5                       01:44:25
6                       01:44:26
7                       01:44:27
8                       01:44:28
9                       01:44:29
0                       01:44:20

TTX/MIX                 None
PRE-CH                  None

VOL+                    None
VOL-                    None
MUTE                    None
CH LIST                 0f:82:00:00 (making TV (0) the active source)
CH UP                   0f:82:00:00 (making TV (0) the active source)
CH DOWN                 0f:82:00:00 (making TV (0) the active source)

SETTINGS                None
HOME                    None
GUIDE                   0f:82:00:00 (making TV (0) the active source)
REC                     None
INFO                    None

UP                      01:44:01
DOWN                    01:44:02
LEFT                    01:44:03
RIGHT                   01:44:04
ENTER                   01:44:00
RETURN                  01:44:0d
EXIT                    01:44:0d

RED (A)                 01:44:72
GREEN (B)               01:44:73
YELLOW (C)              01:44:74
BLUE (D)                01:44:71

PIC SIZE                None
PICTURE                 None
AD/SUBT.                None

STOP                    01:44:45
REWIND                  01:44:48
PLAY                    01:44:44
PAUSE                   01:44:46
FAST FORWARD            01:44:49


All responses except 0f:36 are followed by 01:45, which means "key released".