Difference between revisions of "Automatically launch your application"
From ArmadeusWiki
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# ''/etc/init.d/rcS'' gets all scripts in ''/etc/init.d/'' directory which start with a '''S''', and executes them in ascending order | # ''/etc/init.d/rcS'' gets all scripts in ''/etc/init.d/'' directory which start with a '''S''', and executes them in ascending order | ||
| − | ==Adding your own | + | ==Adding your own application in the start process== |
* creates a shell script in ''/etc/init.d/'': | * creates a shell script in ''/etc/init.d/'': | ||
<pre class="apf"> | <pre class="apf"> | ||
| Line 24: | Line 24: | ||
#!/bin/sh | #!/bin/sh | ||
| − | /usr/bin/your_app & | + | # Loading the modules needed by my app: |
| + | modprobe xxxxx | ||
| + | |||
| + | # Launching my app: | ||
| + | /usr/bin/your_app & # <-- Don't forget the "&" otherwise other system stuff won't start until you leave your app !!! | ||
exit 0 | exit 0 | ||
</source> | </source> | ||
| − | * save your changes and | + | * save your changes and '''!! Test it !!''' |
| + | <pre class="apf"> | ||
| + | # /etc/init.d/S99app | ||
| + | </pre> | ||
| + | |||
| + | * That's it ! You can now reboot: | ||
| + | <pre class="apf"> | ||
| + | # sync | ||
| + | # reboot | ||
| + | </pre> | ||
==Links== | ==Links== | ||
* [[Linux_Boot_Logo| How to customize your boot Logo]] | * [[Linux_Boot_Logo| How to customize your boot Logo]] | ||
Revision as of 12:04, 22 February 2011
You've just developed a state of the art application and want it to be launched each time you boot your APF ? Then this small tutorial is for you !
System startup
First, a small remainder: when you start your board, here is how all things are started:
- U-Boot initializes the system and load Linux
- Linux mounts its rootfs and launches /sbin/init
- init process checks its /etc/inittab config file and executes the instructions it contains
- this config files generally asks init to launch /etc/init.d/rcS
- /etc/init.d/rcS gets all scripts in /etc/init.d/ directory which start with a S, and executes them in ascending order
Adding your own application in the start process
- creates a shell script in /etc/init.d/:
# touch /etc/init.d/S99app # chmod a+x /etc/init.d/S99app
- edit it
# vi /etc/init.d/S99app
- put in it the following content (replace /usr/bin/your_app with your application name & path):
#!/bin/sh
# Loading the modules needed by my app:
modprobe xxxxx
# Launching my app:
/usr/bin/your_app & # <-- Don't forget the "&" otherwise other system stuff won't start until you leave your app !!!
exit 0
- save your changes and !! Test it !!
# /etc/init.d/S99app
- That's it ! You can now reboot:
# sync # reboot
