117 lines
2.5 KiB
Bash
117 lines
2.5 KiB
Bash
#!/bin/sh
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#===============================================================================
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#
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# Copyright (C) 2024 by Digi International Inc.
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# All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License version 2 as published by
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# the Free Software Foundation.
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#
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#
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# !Description: Initialize LVGL demo
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#
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#===============================================================================
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readonly DEMO_NAME="lvgl-demo"
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readonly DEMO_PATH="/usr/bin/${DEMO_NAME}"
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readonly DEMO_TITLE="LVGL Demo Application"
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readonly PID_FILE="/run/${DEMO_NAME}.pid"
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log() {
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if type "systemd-cat" >/dev/null 2>/dev/null; then
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systemd-cat -p "${1}" -t "${DEMO_NAME}" printf "%s" "${2}"
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fi
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logger -p "${1}" -t "${DEMO_NAME}" "${2}"
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}
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get_demo_pid() {
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local pid="$(pgrep -f ${DEMO_PATH})"
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[ -n "${pid}" ] && { echo "${pid}"; return 0; }
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return 1
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}
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check_is_running() {
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local pid
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if [ -s "${PID_FILE}" ]; then
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pid="$(cat ${PID_FILE})"
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else
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pid="$(get_demo_pid)"
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echo "${pid}" > ${PID_FILE}
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fi
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if [ "${pid}" ]; then
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kill -0 "${pid}" >/dev/null 2>&1 && return 0
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fi
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rm -f "${PID_FILE}"
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return 1
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}
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stop() {
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check_is_running || return
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local pid="$(cat ${PID_FILE})"
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kill -TERM "${pid}" >/dev/null 2>&1
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local STOP_TIMEOUT="5"
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for i in $(seq ${STOP_TIMEOUT}); do
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check_is_running || { log info "stopped"; break; }
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if [ "${i}" -eq ${STOP_TIMEOUT} ]; then
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log warning "stop: ${DEMO_NAME} did not stop gracefully"
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kill -KILL "${pid}" >/dev/null 2>&1
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fi
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sleep 1
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done
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}
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start() {
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check_is_running && { log warning "start: ${DEMO_NAME} ALREADY running"; exit 0; }
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# Disable the cursor when displaying at full screen on fbdev
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echo "0" > /sys/class/graphics/fbcon/cursor_blink
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# Launch demo
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env ${DEMO_PATH} >/dev/null 2>&1 &
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if [ $? -eq 0 ]; then
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echo $! > ${PID_FILE}
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log info "$(cat ${PID_FILE})"
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log info "started"
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fi
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}
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case "$1" in
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start)
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echo -n "Starting ${DEMO_TITLE}: "
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export LV_LINUX_DRM_CARD="##LVGL_CONFIG_DRM_CARD##"
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export LV_LINUX_FBDEV_DEVICE="##LVGL_CONFIG_FBDEV_DEVICE##"
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start
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echo "done."
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;;
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stop)
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stop
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unset LV_LINUX_DRM_CARD="##LVGL_CONFIG_DRM_CARD##"
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unset LV_LINUX_FBDEV_DEVICE="##LVGL_CONFIG_FBDEV_DEVICE##"
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echo -n "Stopping ${DEMO_TITLE}: "
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if [ -n "`/bin/pidof ${DEMO_PATH}`" ] ; then
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echo "FAIL"
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else
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echo "OK"
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fi
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;;
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restart)
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stop
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sleep 1
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start
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;;
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*)
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echo "Usage: $0 {start|stop|restart}"
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exit 1
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;;
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esac
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