Call for help: Testing headset buttons

A Former User

I'm a bit late, but here's my version of events:

Devices:
Cosmo Communicator
PinePhone Rev1.2b

Headsets:
3 different sets of wired headsets, one with 3 buttons, one with 2 buttons, one with 1 button

On the Cosmo, selecting:
'/dev/input/event0: ACCDET'

For all buttons on all headsets I get:
type 1 (EV_KEY), code 164 (KEY_PLAYPAUSE), value 0
-------------- SYN_REPORT ------------
type 1 (EV_KEY), code 164 (KEY_PLAYPAUSE), value 1
-------------- SYN_REPORT ------------

There were 'Event code 114 (KEY_VOLUMEDOWN)' and 'Event code 115 (KEY_VOLUMEUP)' amongst other things listed in the 'Supported events' list, but I didn't see them on any button press.

On the PinePhone, after entering 'evtest' I got no 'Available devices', after entering 'sudo evtest' I got some choices, but none gave any response.

c4pp4

Device: Xiaomi Mi A2
Wired USB earphones with three buttons: Mi Dual Driver Earphones (Type-C) (https://www.amazon.de/XIAOMI-Kopfhörer-Weiß-Audio-Stecker/dp/B07MLRXJBC)

Available devices:
/dev/input/event0:      qpnp_pon
/dev/input/event1:      NVTCapacitiveTouchScreen
/dev/input/event2:      uinput-goodix
/dev/input/event3:      hall-switch-input
/dev/input/event4:      gpio-keys
/dev/input/event5:      sdm660-snd-card Headset Jack
/dev/input/event6:      sdm660-snd-card Button Jack
/dev/input/event7:      uinput-fpc
Select the device event number [0-7]: 6
Input driver version is 1.0.1
Input device ID: bus 0x0 vendor 0x0 product 0x0 version 0x0
Input device name: "sdm660-snd-card Button Jack"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 114 (KEY_VOLUMEDOWN)
    Event code 115 (KEY_VOLUMEUP)
    Event code 226 (KEY_MEDIA)
    Event code 260 (BTN_4)
    Event code 261 (BTN_5)
    Event code 582 (KEY_VOICECOMMAND)
Properties:
  Property type 6 (?)
Testing ... (interrupt to exit)
Event: time 1620770065.854970, type 1 (EV_KEY), code 115 (KEY_VOLUMEUP), value 1
Event: time 1620770065.854970, -------------- SYN_REPORT ------------
Event: time 1620770065.855140, type 1 (EV_KEY), code 115 (KEY_VOLUMEUP), value 0
Event: time 1620770065.855140, -------------- SYN_REPORT ------------
Event: time 1620770067.377695, type 1 (EV_KEY), code 226 (KEY_MEDIA), value 1
Event: time 1620770067.377695, -------------- SYN_REPORT ------------
Event: time 1620770067.377772, type 1 (EV_KEY), code 226 (KEY_MEDIA), value 0
Event: time 1620770067.377772, -------------- SYN_REPORT ------------
Event: time 1620770068.851389, type 1 (EV_KEY), code 114 (KEY_VOLUMEDOWN), value 1
Event: time 1620770068.851389, -------------- SYN_REPORT ------------
Event: time 1620770068.851508, type 1 (EV_KEY), code 114 (KEY_VOLUMEDOWN), value 0
Event: time 1620770068.851508, -------------- SYN_REPORT ------------

poVoq

@c4pp4 Ah, cool, so USB headset audio is already supported? That would be nice to add to the button support as well.

flohack

@povoq Well headset audio should work for music with any headset (wired, BT) but call audio seems to be broken for BT.

poVoq

@flohack Well, I was surprised as "wired" as in headphone jack is completly different from USB headsets.

flohack

@povoq Ohh I see. That would be new, that USB devices work

CiberSheep

Oh, I didn't understand I could test wired ones
I have ones of those white, hard ones with 3 buttons, vol+, vol- and white button:

Select the device event number [0-5]: 4
Input driver version is 1.0.1
Input device ID: bus 0x19 vendor 0x0 product 0x0 version 0x0
Input device name: "ACCDET"
[...]
Properties:
Testing ... (interrupt to exit)
Event: time 1620815706.095935, type 1 (EV_KEY), code 164 (KEY_PLAYPAUSE), value 1
Event: time 1620815706.095935, type 1 (EV_KEY), code 164 (KEY_PLAYPAUSE), value 0

Only white central button works, not the volume ones

rik

Nexus 5, RC Channel (2021-W18), wired headset w/ play/pause, volume +, volume - buttons:

phablet@ubuntu-phablet:~$ sudo evtest
No device specified, trying to scan all of /dev/input/event*
Available devices:
/dev/input/event0:	qpnp_pon
/dev/input/event1:	touch_dev
/dev/input/event2:	gpio-keys
/dev/input/event3:	hs_detect
/dev/input/event4:	msm8974-taiko-mtp-snd-card Button Jack
/dev/input/event5:	msm8974-taiko-mtp-snd-card Headset Jack
Select the device event number [0-5]: 3
Input driver version is 1.0.1
Input device ID: bus 0x0 vendor 0x1 product 0x1 version 0x1
Input device name: "hs_detect"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 114 (KEY_VOLUMEDOWN)
    Event code 115 (KEY_VOLUMEUP)
    Event code 226 (KEY_MEDIA)
  Event type 5 (EV_SW)
    Event code 2 (SW_HEADPHONE_INSERT) state 1
    Event code 4 (SW_MICROPHONE_INSERT) state 1
Properties:
Testing ... (interrupt to exit)
Event: time 439671.235176, type 1 (EV_KEY), code 226 (KEY_MEDIA), value 1
Event: time 439671.235866, -------------- SYN_REPORT ------------
Event: time 439671.400194, type 1 (EV_KEY), code 226 (KEY_MEDIA), value 0
Event: time 439671.400336, -------------- SYN_REPORT ------------

So the volume + and volume - buttons are not detected, but the play / pause button is detected (correctly) as KEY_MEDIA. However, pressing it 1 time gives 2 events, both the value 1 and the value 0 entries above are from a single key press.

rik

@kugiigi this means the device you are inspecting isn't associated with your headset (or it isn't detecting any button presses). Try again with another device selected. If it is a bluetooth device and you have selected the correct device (by mac address for bluetooth) then I think that means unfortunately button detection isn't working for that device. Can you try other bluetooth devices and / or other wired headsets?

UPDATE: I tried with 2 bluetooth devices and got no detected events either.....

flohack

@rik Yeah the 2 events are okay, you could have different functions for a long and a short press, so thats why it needs to send press and release.

rik

Nexus 5, RC Channel (2021-W18), 2 bluetooth headsets (Mpow M30 earbuds, Anker Sound Core Mini speaker): no events detected when pressing play/pause, volume buttons but sound does work to both devices