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Switched from init to systemd service #19

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Switched from init to systemd service #19

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72 changes: 31 additions & 41 deletions install-piface-real-time-clock.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -43,8 +43,8 @@ set_revision_var() {
# DESCRIPTION: Load the I2C modules and send magic number to RTC, on boot.
#=======================================================================
start_on_boot() {
echo "Create a new pifacertc init script to load time from PiFace RTC."
echo "Adding /etc/init.d/pifacertc ."
echo "Creating a new script and systemd service file to load time from PiFace RTC."
echo "Adding /usr/local/bin/pifacertc.sh"

if [[ $RPI_REVISION == "4" ]]; then
i=1 # i2c-1
Expand All @@ -56,51 +56,41 @@ start_on_boot() {
i=0 # i2c-0
fi

cat > /etc/init.d/pifacertc << EOF
cat > /usr/local/bin/pifacertc.sh << EOF
#!/bin/sh
### BEGIN INIT INFO
# Provides: pifacertc
# Required-Start: udev mountkernfs \$remote_fs raspi-config
# Required-Stop:
# Default-Start: S
# Default-Stop:
# Short-Description: Add the PiFace RTC
# Description: Add the PiFace RTC
### END INIT INFO

. /lib/lsb/init-functions

case "\$1" in
start)
log_success_msg "Probe the i2c-dev"
modprobe i2c-dev
# Calibrate the clock (default: 0x47). See datasheet for MCP7940N
log_success_msg "Calibrate the clock"
i2cset -y $i 0x6f 0x08 0x47
log_success_msg "Probe the mcp7941x driver"
modprobe i2c:mcp7941x
log_success_msg "Add the mcp7941x device in the sys filesystem"
# https://www.kernel.org/doc/Documentation/i2c/instantiating-devices
echo mcp7941x 0x6f > /sys/class/i2c-dev/i2c-$i/device/new_device
log_success_msg "Synchronise the system clock and hardware RTC"
hwclock --hctosys
;;
stop)
;;
restart)
;;
force-reload)
;;
*)
echo "Usage: \$0 start" >&2
exit 3
;;
esac
log_success_msg "Probe the i2c-dev"
modprobe i2c-dev
# Calibrate the clock (default: 0x47). See datasheet for MCP7940N
log_success_msg "Calibrate the clock"
i2cset -y $i 0x6f 0x08 0x47
log_success_msg "Probe the mcp7941x driver"
modprobe i2c:mcp7941x
log_success_msg "Add the mcp7941x device in the sys filesystem"
# https://www.kernel.org/doc/Documentation/i2c/instantiating-devices
echo mcp7941x 0x6f > /sys/class/i2c-dev/i2c-$i/device/new_device
log_success_msg "Synchronise the system clock and hardware RTC"
hwclock --hctosys
EOF
chmod +x /etc/init.d/pifacertc
chmod +x /usr/local/bin/pifacertc.sh

echo "Install the pifacertc init script"
update-rc.d pifacertc defaults
echo "Adding /etc/systemd/system/pifacertc.service"
cat > /etc/systemd/system/pifacertc.service << EOF
[Unit]
Description=PiFace Shim RTC

[Service]
ExecStart=/usr/local/bin/pifacertc.sh

[Install]
WantedBy=multi-user.target
EOF
echo "Installing and starting the pifacertc systemd service"
systemctl daemon-reload
systemctl enable pifacertc.service
systemctl start pifacertc.service
}

#=======================================================================
Expand Down