Hallo,
BusyBox v1.25.1 (2017-11-30 06:38:03 CET) built-in shell (ash)
Enter 'help' for a list of built-in commands.
vdrhd> ir-keytable
Couldn't find any node at /sys/class/rc/rc*.
vdrhd> cd /dev/input/
  Repeat type 20 (EV_REP)
    Repeat code 0 (REP_DELAY)
      Value    250
    Repeat code 1 (REP_PERIOD)
      Value     33
Properties:
Testing ... (interrupt to exit)
Event: time 1512671622.304743, type 1 (EV_KEY), code 139 (KEY_MENU), value 1
Event: time 1512671622.304743, -------------- SYN_REPORT ------------
Event: time 1512671622.505692, type 1 (EV_KEY), code 139 (KEY_MENU), value 0
Event: time 1512671622.505692, -------------- SYN_REPORT ------------
vdrhd> evtest
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0:      Power Button
/dev/input/event1:      Power Button
/dev/input/event2:      HDA Intel PCH Rear Mic
/dev/input/event3:      HDA Intel PCH Line
/dev/input/event4:      HDA Intel PCH Line Out Front
/dev/input/event5:      HDA Intel PCH Line Out Surround
/dev/input/event6:      HDA Intel PCH Line Out CLFE
/dev/input/event7:      HDA NVidia HDMI/DP,pcm=3
/dev/input/event8:      HDA NVidia HDMI/DP,pcm=7
/dev/input/event9:      lircd-uinput
Select the device event number [0-9]: