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This article will explain in detail how to set up the startup of raspberry pie in service mode. The content of the article is of high quality, so the editor will share it with you for reference. I hope you will have some understanding of the relevant knowledge after reading this article.

First, write a simple python script

The script is very simple, just send a light flashing program to the raspberry. If you need to learn gpio, you can read my previous blog.

The file is saved in / home/pi/script/ledblink.py

#! / usr/bin/env python

Import RPi.GPIO as GPIO

Import time

GPIO.setmode (GPIO.BCM)

GPIO.setup (21m GPIO. Out)

While True:

Try:

GPIO.output (21Jing True)

Time.sleep (1)

GPIO.output (21Jing false)

Time.sleep (1)

Except (KeyboardInterrupt, SystemExit):

GPIO.close ()

Print "exit"

The startup script can be python, shell, or an executable file compiled by the C language C++.

Second, boot startup script

Save the script as / etc/init.d/ledblink file

#! / bin/bash

# / etc/init.d/ledblink

# BEGIN INIT INFO

# Provides: embbnux

# Required-Start: $remote_fs $syslog

# Required-Stop: $remote_fs $syslog

# Default-Start: 2 3 4 5

# Default-Stop: 0 1 6

# Short-Description: ledblink initscript

# Description: This service is used to manage a led

# END INIT INFO

Case "$1" in

Start)

Echo "Starting LED Blink"

/ home/pi/script/ledblink.py &

Stop)

Echo "Stopping ledblink"

# killall ledblink.py

Kill $(ps aux | grep-m 1 'python / home/pi/script/ledblink.py' | awk' {print $2}')

*)

Echo "Usage: service ledblink start | stop"

Exit 1

Esac

Exit 0

3. Set the python script to boot

Sudo chmod + x / etc/init.d/ledblink

In this way, you can start the script and use the service command.

Sudo service ledblink start# start

Sudo service ledblink stop# stop

Finally, just set it up and start it.

Sudo update-rc.d ledblink defaults

When you're done, restart the raspberry pie and you'll find led flashing itself. Just stop using sudo service ledblink stop.

About how to use the service mode to set up and start raspberry pie to share here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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