OpenVoiceOS/buildroot-external/rootfs-overlay/usr/libexec/ovos-i2csound

#!/bin/bash
##########################################################################
# ovos-i2csound
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
##########################################################################

# Set default configurations
ASOUND_STATE=/var/lib/alsa/default-asound.state
PULSE_SYSTEM=/etc/pulse/pulseaudio-system.pa
PULSE_DAEMON=/etc/pulse/pulseaudio-daemon.conf

# Set known hat overlay variables
RPI_HATS="seeed-2mic-voicecard seeed-4mic-voicecard seeed-8mic-voicecard"

# Scanning the I2C bus for know addresses 
is_1a=$(i2cdetect -y 1 0x1a 0x1a | egrep "(1a|UU)" | awk '{print $2}') # ReSpeaker 2-mic / WM8960
if [ $is_1a == "1a" ] || [ $is_1a == "UU" ] ; then
    RESPEAKER2=found
fi

is_35=$(i2cdetect -y 1 0x35 0x35 | egrep "(35|UU)" | awk '{print $2}') # ReSpeaker 4-mic squared
if [ $is_35 == "35" ] || [ $is_35 == "UU" ] ; then
    RESPEAKER4=found
fi

is_3b=$(i2cdetect -y 1 0x3b 0x3b | egrep "(3b|UU)" | awk '{print $2}') # ReSpeaker 4-mic lineair / 6-mic
if [ $is_3b == "3b" ] || [ $is_3b == "UU" ] ; then
    RESPEAKER6=found
fi

is_4b=$(i2cdetect -y 1 0x4b 0x4b | egrep "(4b|UU)" | awk '{print $2}') # Adafruit
if [ $is_4b == "4b" ] || [ $is_4b == "UU" ] ; then
    ADAFRUIT=found
fi

is_2f=$(i2cdetect -y 1 0x2f 0x2f | egrep "(2f|UU)" | awk '{print $2}') # TAS5806
if [ $is_2f == "2f" ] || [ $is_2f == "UU" ] ; then
    TAS5806=found
fi

is_04=$(i2cdetect -y -a 1 0x04 0x04 | egrep "(04|UU)" | awk '{print $2}') # SJ201 Led Ring
if [ $is_04 == "04" ] || [ $is_04 == "UU" ] ; then
    SJ201LED=found
fi


# Remove old configurations
if [ -f /var/lib/alsa/asound.state ] ; then
    rm /var/lib/alsa/asound.state
fi
if [ -f /etc/ovos_asound.state ] ; then
    rm /etc/ovos_asound.state
fi
if [ -f /etc/pulse/system.pa ] ; then
    rm /etc/pulse/system.pa
fi
if [ -f /etc/pulse/daemon.conf ] ; then
    rm /etc/pulse/daemon.conf
fi

if [ $RESPEAKER2 == "found" ] && [ $RESPEAKER4 != "found" ] ; then
    echo "Installing and configuring ReSpeaker 2-mic"
    modprobe snd-soc-wm8960
    OVERLAY=seeed-2mic-voicecard
    ASOUND_STATE=/etc/voicecard/wm8960_asound.state
fi

if [ $RESPEAKER6 == "found" ] && [ $RESPEAKER4 != "found" ] ; then
    echo "Installing and configuring ReSpeaker 4-mic"
    modprobe snd-soc-seeed-voicecard
    modprobe snd-soc-ac108
    OVERLAY=seeed-4mic-voicecard
    ASOUND_STATE=/etc/voicecard/ac108_asound.state
    PULSE_SYSTEM=/etc/pulse/seeed-voicecard-4mic-default.pa
    PULSE_DAEMON=/etc/pulse/seeed-voicecard-4mic-daemon.conf
fi

if [ $RESPEAKER6 == "found" ] && [ $RESPEAKER4 == "found" ] ; then
    echo "Installing and configuring ReSpeaker 6mic"
    modprobe snd-soc-seeed-voicecard
    modprobe snd-soc-ac108
    OVERLAY=seeed-8mic-voicecard
    ASOUND_STATE=/etc/voicecard/ac108_6mic.state
    PULSE_SYSTEM=/etc/pulse/seeed-voicecard-8mic-default.pa
    PULSE_DAEMON=/etc/pulse/seeed-voicecard-8mic-daemon.conf
fi

if [ $ADAFRUIT == "found" ] ; then
    echo "Installing and configuring Adafruit"
    /usr/sbin/i2cset -y 1 0x4b 30 # Set maximum volume to 30
fi

if [ $TAS5860 == "found" ] && [ $SJ201LED == "found" ]; then
    echo "Installing and configuring SJ201"
    # Initializing XMOS xvf3510
    /usr/sbin/xvf3510-start
    # Initializing Texas Instruments 5806 Amplifier
    /usr/bin/tas5806-init
    # Initializing and resetting LED ring
    /usr/bin/sj201-reset-led
    PULSE_SYSTEM=/etc/pulse/mycroft-sj201-default.pa
    PULSE_DAEMON=/etc/pulse/mycroft-sj201-daemon.conf
fi

# Load overlay
if [ "$OVERLAY" ]; then
    echo Loading $OVERLAY ...

    # Make sure the driver loads correctly
    dtoverlay $OVERLAY || true
fi

# Install soundstate
echo "create asound status file"
ln -s $ASOUND_STATE /etc/ovos_asound.state

# Install pulseaudio files
echo "create pulse system file"
ln -s $PULSE_SYSTEM /etc/pulse/system.pa
echo "create pulse daemon file"
ln -s $PULSE_DAEMON /etc/pulse/daemon.conf

# Restore sound levels
alsactl -E HOME=/run/alsa -f /etc/ovos_asound.state restore