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119 lines
2.6 KiB
119 lines
2.6 KiB
#!/bin/bash
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#-------------------------------------------------------------------------
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# Installer script for I2S microphone support on Raspberry Pi
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#
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# 2020/04/15
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# 2020/07/08 remove DKMS
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#-------------------------------------------------------------------------
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############################ Script assisters ############################
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# Given a list of strings representing options, display each option
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# preceded by a number (1 to N), display a prompt, check input until
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# a valid number within the selection range is entered.
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selectN() {
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for ((i=1; i<=$#; i++)); do
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echo $i. ${!i}
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done
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echo
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REPLY=""
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while :
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do
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echo -n "SELECT 1-$#: "
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read
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if [[ $REPLY -ge 1 ]] && [[ $REPLY -le $# ]]; then
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return $REPLY
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fi
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done
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}
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function ask() {
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# http://djm.me/ask
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while true; do
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if [ "${2:-}" = "Y" ]; then
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prompt="Y/n"
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default=Y
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elif [ "${2:-}" = "N" ]; then
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prompt="y/N"
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default=N
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else
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prompt="y/n"
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default=
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fi
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# Ask the question
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read -p "$1 [$prompt] " REPLY
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# Default?
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if [ -z "$REPLY" ]; then
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REPLY=$default
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fi
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# Check if the reply is valid
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case "$REPLY" in
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Y*|y*) return 0 ;;
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N*|n*) return 1 ;;
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esac
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done
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}
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####################################################### MAIN
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clear
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echo "This script downloads and installs"
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echo "I2S microphone support."
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echo
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echo "Select Pi Model:"
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selectN "Pi 0 or 0W" \
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"Pi 2 or 3" \
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"Pi 4"
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PIMODEL_SELECT=$(($?-1))
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ask "Auto load module at boot?"
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AUTO_LOAD=$?
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echo
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echo "Installing..."
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# Get needed packages
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apt-get -y install git raspberrypi-kernel-headers
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# Clone the repo
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git clone https://github.com/adafruit/Raspberry-Pi-Installer-Scripts.git
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# Build and install the module
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cd Raspberry-Pi-Installer-Scripts/i2s_mic_module
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make clean
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make
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make install
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# Setup auto load at boot if selected
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if [ $AUTO_LOAD = 0 ]; then
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cat > /etc/modules-load.d/snd-i2smic-rpi.conf<<EOF
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snd-i2smic-rpi
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EOF
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cat > /etc/modprobe.d/snd-i2smic-rpi.conf<<EOF
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options snd-i2smic-rpi rpi_platform_generation=$PIMODEL_SELECT
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EOF
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fi
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# Enable I2S overlay
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sed -i -e 's/#dtparam=i2s/dtparam=i2s/g' /boot/config.txt
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# Done
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echo "DONE."
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echo
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echo "Settings take effect on next boot."
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echo
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echo -n "REBOOT NOW? [y/N] "
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read
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if [[ ! "$REPLY" =~ ^(yes|y|Y)$ ]]; then
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echo "Exiting without reboot."
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exit 0
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fi
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echo "Reboot started..."
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reboot
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exit 0
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