Respeaker 2 mic without the horrible respeaker drivers

Archive - Mycroft Project Archive - Former Random Mycroft Category
1

Respeaker 2 mic without the horrible respeaker drivers.

Install the kernel headers

amixer -c2 cset numid=55 1
amixer -c2 cset numid=51 1

Or whatever aplay -l gives

In fact so many settings amixer -c2 contents copy those somewhere from your respeaker settings and apply to the wm8960 driver.

amixer pi@raspberrypi:~ $ amixer -c2 contents
numid=12,iface=MIXER,name='Headphone Playback ZC Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=11,iface=MIXER,name='Headphone Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=127,step=0
  : values=110,110
  | dBscale-min=-121.00dB,step=1.00dB,mute=1
numid=17,iface=MIXER,name='PCM Playback -6dB Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=57,iface=MIXER,name='Mono Output Mixer Left Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=58,iface=MIXER,name='Mono Output Mixer Right Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=41,iface=MIXER,name='ADC Data Output Select'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'Left Data = Left ADC;  Right Data = Right ADC'
  ; Item #1 'Left Data = Left ADC;  Right Data = Left ADC'
  ; Item #2 'Left Data = Right ADC; Right Data = Right ADC'
  ; Item #3 'Left Data = Right ADC; Right Data = Left ADC'
  : values=0
numid=19,iface=MIXER,name='ADC High Pass Filter Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=36,iface=MIXER,name='ADC PCM Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
  : values=195,195
  | dBscale-min=-97.50dB,step=0.50dB,mute=1
numid=18,iface=MIXER,name='ADC Polarity'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'No Inversion'
  ; Item #1 'Left Inverted'
  ; Item #2 'Right Inverted'
  ; Item #3 'Stereo Inversion'
  : values=0
numid=2,iface=MIXER,name='Capture Volume ZC Switch'
  ; type=INTEGER,access=rw------,values=2,min=0,max=1,step=0
  : values=0,0
numid=3,iface=MIXER,name='Capture Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=1,iface=MIXER,name='Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=63,step=0
  : values=43,43
  | dBscale-min=-17.25dB,step=0.75dB,mute=0
numid=10,iface=MIXER,name='Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=255,step=0
  : values=246,246
  | dBscale-min=-127.50dB,step=0.50dB,mute=1
numid=23,iface=MIXER,name='3D Filter Lower Cut-Off'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Low'
  ; Item #1 'High'
  : values=0
numid=22,iface=MIXER,name='3D Filter Upper Cut-Off'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'High'
  ; Item #1 'Low'
  : values=0
numid=25,iface=MIXER,name='3D Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=24,iface=MIXER,name='3D Volume'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=0
numid=33,iface=MIXER,name='ALC Attack'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=2
numid=32,iface=MIXER,name='ALC Decay'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=3
numid=26,iface=MIXER,name='ALC Function'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'Off'
  ; Item #1 'Right'
  ; Item #2 'Left'
  ; Item #3 'Stereo'
  : values=0
numid=30,iface=MIXER,name='ALC Hold Time'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=0
numid=27,iface=MIXER,name='ALC Max Gain'
  ; type=INTEGER,access=rw------,values=1,min=0,max=7,step=0
  : values=7
numid=29,iface=MIXER,name='ALC Min Gain'
  ; type=INTEGER,access=rw------,values=1,min=0,max=7,step=0
  : values=0
numid=31,iface=MIXER,name='ALC Mode'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'ALC'
  ; Item #1 'Limiter'
  : values=0
numid=28,iface=MIXER,name='ALC Target'
  ; type=INTEGER,access=rw------,values=1,min=0,max=15,step=0
  : values=4
numid=21,iface=MIXER,name='DAC Deemphasis Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=42,iface=MIXER,name='DAC Mono Mix'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Stereo'
  ; Item #1 'Mono'
  : values=0
numid=20,iface=MIXER,name='DAC Polarity'
  ; type=ENUMERATED,access=rw------,values=1,items=4
  ; Item #0 'No Inversion'
  ; Item #1 'Left Inverted'
  ; Item #2 'Right Inverted'
  ; Item #3 'Stereo Inversion'
  : values=0
numid=45,iface=MIXER,name='Left Boost Mixer LINPUT1 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=43,iface=MIXER,name='Left Boost Mixer LINPUT2 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=44,iface=MIXER,name='Left Boost Mixer LINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=9,iface=MIXER,name='Left Input Boost Mixer LINPUT1 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=3,step=0
  : values=3
  | dBrange-
    rangemin=0,,rangemax=1
      | dBscale-min=0.00dB,step=13.00dB,mute=0
    rangemin=2,,rangemax=3
      | dBscale-min=20.00dB,step=9.00dB,mute=0

numid=5,iface=MIXER,name='Left Input Boost Mixer LINPUT2 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=4,iface=MIXER,name='Left Input Boost Mixer LINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=49,iface=MIXER,name='Left Input Mixer Boost Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=53,iface=MIXER,name='Left Output Mixer Boost Bypass Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=37,iface=MIXER,name='Left Output Mixer Boost Bypass Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=52,iface=MIXER,name='Left Output Mixer LINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=38,iface=MIXER,name='Left Output Mixer LINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=51,iface=MIXER,name='Left Output Mixer PCM Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=35,iface=MIXER,name='Noise Gate Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=34,iface=MIXER,name='Noise Gate Threshold'
  ; type=INTEGER,access=rw------,values=1,min=0,max=31,step=0
  : values=0
numid=48,iface=MIXER,name='Right Boost Mixer RINPUT1 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=46,iface=MIXER,name='Right Boost Mixer RINPUT2 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=47,iface=MIXER,name='Right Boost Mixer RINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=8,iface=MIXER,name='Right Input Boost Mixer RINPUT1 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=3,step=0
  : values=3
  | dBrange-
    rangemin=0,,rangemax=1
      | dBscale-min=0.00dB,step=13.00dB,mute=0
    rangemin=2,,rangemax=3
      | dBscale-min=20.00dB,step=9.00dB,mute=0

numid=7,iface=MIXER,name='Right Input Boost Mixer RINPUT2 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=6,iface=MIXER,name='Right Input Boost Mixer RINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=0
  | dBscale-min=-15.00dB,step=3.00dB,mute=1
numid=50,iface=MIXER,name='Right Input Mixer Boost Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=56,iface=MIXER,name='Right Output Mixer Boost Bypass Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=39,iface=MIXER,name='Right Output Mixer Boost Bypass Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=5
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=54,iface=MIXER,name='Right Output Mixer PCM Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=55,iface=MIXER,name='Right Output Mixer RINPUT3 Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=off
numid=40,iface=MIXER,name='Right Output Mixer RINPUT3 Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=2
  | dBscale-min=-21.00dB,step=3.00dB,mute=0
numid=16,iface=MIXER,name='Speaker AC Volume'
  ; type=INTEGER,access=rw------,values=1,min=0,max=5,step=0
  : values=5
numid=15,iface=MIXER,name='Speaker DC Volume'
  ; type=INTEGER,access=rw------,values=1,min=0,max=5,step=0
  : values=4
numid=13,iface=MIXER,name='Speaker Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=127,step=0
  : values=127,127
  | dBscale-min=-121.00dB,step=1.00dB,mute=1
numid=14,iface=MIXER,name='Speaker Playback ZC Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
2

Hmmm, interesting. Does it work with 5.4 64 bit? If so I might have a look for the 4-mic board as well.

3

Haven’t tried but yeah works on 5.4 Armhf didn’t role out the newer PiOS 64 but prob if I remember rightly they still haven’t included the 64bit kernel headers.
So you will have nothing to build against or any other module also.

No idea why they supply a 64bit OS with the 32 bit kernel headers?

So it prob does work on a 64Bit OS but prob not the beta of RaspiOS 64bit

If you read through there is a script to create the kernel headers.

Use Ubuntu or other think even Arch has a blazing fast 64bit now or I got a Arch Pi4 rootfs from somewhere.
Or work out the kernel header script for 64bit.

4

Kernel headers are not an issue for me as everything get’s build from source. Both the kernel and headers. Hence even the overlays.

5

Should be yes then for the driver