[AudioI] Sound Test with VU Meter

[Celia Wilkins]

Hi Matt -
Just a reminder that I've completed the test you recommended and could
definitely still use your help with debugging this. I'm using a raspberry
pi 4, with Raspbian OS 10 (buster), with the 6 channel input board attached
to the input header and the 8 channel output board attached to the output
header. The contents of my asound.conf, config.txt, and .asoundrc are
attached to this email. The results of the test are that when looking at
the Pi with the input on the right and output on the left, only the front 4
or 5 input pins gave any signal when running my finger along them. Thanks
for any help you can provide!
CW
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pcm.!default{
#    type hw
#    card 1
     type plug
     slave.pcm "anyChannelCount"
}

ctl.!default {
     type hw
     card 1
}

pcm.anyChannelCount {
     type route
     slave.pcm "hw.1"
     slave.channels 8;
     ttable {
         0.0 1
         1.1 1
         2.2 1
         3.3 1
         4.4 1
         5.5 1
         6.6 1
         7.7 1
     }
}

ctl.anyChannelCount{
     type hw;
     card 1;
}
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# For more options and information see
# http://rpf.io/configtxt
# Some settings may impact device functionality. See link above for details

# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
disable_overscan=1

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

# uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1

# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

# Uncomment some or all of these to enable the optional hardware interfaces
dtparam=i2c_arm=on
dtparam=i2s=on
dtparam=spi=on

# Uncomment this to enable infrared communication.
#dtoverlay=gpio-ir,gpio_pin=17
#dtoverlay=gpio-ir-tx,gpio_pin=18

# Additional overlays and parameters are documented /boot/overlays/README

# Enable audio (loads snd_bcm2835)
dtparam=audio=on

[pi4]
# Enable DRM VC4 V3D driver on top of the dispmanx display stack
#dtoverlay=vc4-fkms-v3d
max_framebuffers=2

[all]
#dtoverlay=vc4-fkms-v3d
# enable the AudioInjector.net sound card
dtoverlay=audioinjector-addons
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pcm.!default {
#       type hw
#       card 1
        type plug
        slave.pcm "anyChannelCount"
}

ctl.!default {
        type hw
        card 1
}