klipper-dgus/scripts/klipper-pru-start.sh

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#!/bin/sh
# System startup script to start the PRU firmware
### BEGIN INIT INFO
# Provides: klipper_pru
# Required-Start: $local_fs
# Required-Stop:
# Default-Start: 3 4 5
# Default-Stop: 0 1 2 6
# Short-Description: Klipper_PRU daemon
# Description: Starts the PRU for Klipper.
### END INIT INFO
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
DESC="klipper_pru startup"
NAME="klipper_pru"
KLIPPER_HOST_MCU=/usr/local/bin/klipper_mcu
KLIPPER_HOST_ARGS="-w -r"
PIDFILE=/var/run/klipper_mcu.pid
. /lib/lsb/init-functions
pru_stop()
{
# Shutdown existing Klipper instance (if applicable). The goal is to
# put the GPIO pins in a safe state.
if [ -c /dev/rpmsg_pru30 ]; then
log_daemon_msg "Attempting to shutdown PRU..."
set -e
( echo "FORCE_SHUTDOWN" > /dev/rpmsg_pru30 ) 2> /dev/null || ( log_action_msg "Firmware busy! Please shutdown Klipper and then retry." && exit 1 )
sleep 1
( echo "FORCE_SHUTDOWN" > /dev/rpmsg_pru30 ) 2> /dev/null || ( log_action_msg "Firmware busy! Please shutdown Klipper and then retry." && exit 1 )
sleep 1
set +e
fi
log_daemon_msg "Stopping pru"
echo 4a334000.pru0 > /sys/bus/platform/drivers/pru-rproc/unbind
echo 4a338000.pru1 > /sys/bus/platform/drivers/pru-rproc/unbind
}
pru_start()
{
if [ -c /dev/rpmsg_pru30 ]; then
pru_stop
else
echo 4a334000.pru0 > /sys/bus/platform/drivers/pru-rproc/unbind
echo 4a338000.pru1 > /sys/bus/platform/drivers/pru-rproc/unbind
fi
sleep 1
log_daemon_msg "Starting pru"
echo 4a334000.pru0 > /sys/bus/platform/drivers/pru-rproc/bind
echo 4a338000.pru1 > /sys/bus/platform/drivers/pru-rproc/bind
log_daemon_msg "Loading ADC module"
echo 'BB-ADC' > /sys/devices/platform/bone_capemgr/slots
}
mcu_host_stop()
{
# Shutdown existing Klipper instance (if applicable). The goal is to
# put the GPIO pins in a safe state.
if [ -c /tmp/klipper_host_mcu ]; then
log_daemon_msg "Attempting to shutdown host mcu..."
set -e
( echo "FORCE_SHUTDOWN" > /tmp/klipper_host_mcu ) 2> /dev/null || ( log_action_msg "Firmware busy! Please shutdown Klipper and then retry." && exit 1 )
sleep 1
( echo "FORCE_SHUTDOWN" > /tmp/klipper_host_mcu ) 2> /dev/null || ( log_action_msg "Firmware busy! Please shutdown Klipper and then retry." && exit 1 )
sleep 1
set +e
fi
log_daemon_msg "Stopping klipper host mcu" $NAME
killproc -p $PIDFILE $KLIPPER_HOST_MCU
}
mcu_host_start()
{
[ -x $KLIPPER_HOST_MCU ] || return
if [ -c /tmp/klipper_host_mcu ]; then
mcu_host_stop
fi
log_daemon_msg "Starting klipper MCU" $NAME
start-stop-daemon --start --quiet --exec $KLIPPER_HOST_MCU \
--background --pidfile $PIDFILE --make-pidfile \
-- $KLIPPER_HOST_ARGS
log_end_msg $?
}
case "$1" in
start)
pru_start
mcu_host_start
;;
stop)
pru_stop
mcu_host_stop
;;
restart)
$0 stop
$0 start
;;
reload|force-reload)
log_daemon_msg "Reloading configuration not supported" $NAME
log_end_msg 1
;;
status)
status_of_proc -p $PIDFILE $KLIPPER_HOST_MCU $NAME && exit 0 || exit $?
;;
*) log_action_msg "Usage: /etc/init.d/klipper {start|stop|status|restart|reload|force-reload}"
exit 2
;;
esac
exit 0