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95 lines
2.3 KiB
95 lines
2.3 KiB
#!/bin/bash
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if [ $(id -u) -ne 0 ]; then
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echo "Installer must be run as root."
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echo "Try 'sudo bash $0'"
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exit 1
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fi
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clear
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echo "This script will install Adafruit"
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echo "fan service, which will turn on an"
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echo "external fan controlled by a given pin"
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echo
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echo "Operations performed include:"
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echo "- In /boot/config.txt, enable camera"
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echo "- apt-get update"
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echo "- Install Python libraries:"
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echo " picamera, pygame, PIL"
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echo "- Downgrade SDL library for pygame"
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echo " touch compatibility"
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echo "- Download Dropbox Updater and"
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echo " Adafruit Pi Cam software"
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echo
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echo "Run time 1+ minutes. Reboot not required."
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echo
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group=ADAFRUIT
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function info() {
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system="$1"
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group="${system}"
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shift
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FG="1;32m"
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BG="40m"
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echo -e "[\033[${FG}\033[${BG}${system}\033[0m] $*"
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}
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function bail() {
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FG="1;31m"
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BG="40m"
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echo -en "[\033[${FG}\033[${BG}${group}\033[0m] "
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if [ -z "$1" ]; then
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echo "Exiting due to error"
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else
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echo "Exiting due to error: $*"
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fi
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exit 1
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}
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if [ "$1" != '-y' ]; then
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echo -n "CONTINUE? [y/N]"
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read
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if [[ ! "$REPLY" =~ ^(yes|y|Y)$ ]]; then
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echo "Canceled."
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exit 0
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fi
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fi
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echo "Continuing..."
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# check init system (technique borrowed from raspi-config):
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info FAN 'Checking init system...'
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if command -v systemctl > /dev/null && systemctl | grep -q '\-\.mount'; then
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echo "Found systemd, OK!"
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elif [ -f /etc/init.d/cron ] && [ ! -h /etc/init.d/cron ]; then
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bail "Found sysvinit, but we require systemd"
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else
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bail "Unrecognised init system"
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fi
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info FAN 'Adding adafruit_fan.service'
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cat > /etc/systemd/system/adafruit_fan.service <<EOF
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[Unit]
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Description=Fan service for some Adafruit boards
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After=network.target
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[Service]
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Type=oneshot
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ExecStartPre=-/bin/bash -c 'echo 4 >/sys/class/gpio/export'
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ExecStartPre=/bin/bash -c 'echo out >/sys/class/gpio/gpio4/direction'
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ExecStart=/bin/bash -c 'echo 1 >/sys/class/gpio/gpio4/value'
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RemainAfterExit=true
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ExecStop=/bin/bash -c 'echo 0 >/sys/class/gpio/gpio4/value'
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StandardOutput=journal
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[Install]
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WantedBy=multi-user.target
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EOF
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info FAN 'Enabling adafruit_fan.service'
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sudo systemctl enable adafruit_fan.service
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sudo systemctl start adafruit_fan.service
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info FAN 'Done!'
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echo "You can stop the fan service with 'sudo systemctl stop adafruit_fan.service'"
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echo "You can start the fan service with 'sudo systemctl start adafruit_fan.service'"
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