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