# Application auto-start at boot on WP8548(Firmware release14)
**URL:** https://mangoh.discourse.group/t/application-auto-start-at-boot-on-wp8548-firmware-release14/8303
**Category:** Uncategorized
**Created:** [April 12, 2021, 6:42am UTC](https://mangoh.discourse.group/t/application-auto-start-at-boot-on-wp8548-firmware-release14/8303 "2021-04-12T06:42:03Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@u\_6s](https://mangoh.discourse.group/u/u_6s)
#### Post date: [April 12, 2021, 6:42am UTC](https://mangoh.discourse.group/t/application-auto-start-at-boot-on-wp8548-firmware-release14/8303/1 "2021-04-12T06:42:03Z")
Hello, I want to start my application at boot by using /etc/init.d/Startlegato.sh.
The problem is that only my application doesn’t start at boot.
(=In the following case, test.txt is generated, but my application doesn’t start.)
・The application is called from the shell scrypt I made for the test.(test.sh)
・I set command “/etc/init.d/test.sh” to /etc/init.d/Startlegato.sh.
・test.sh includes other command like “touch /home/root/test.txt”
I prepared the application by the following steps:
・ Bulid the application with VM on windows PC
(VM:Orange - mangOH Dev using Legato 18.09.0 on Ubuntu 18.04)
・ Copy it to /home/root on WP8548 by SSH.
・ Grant an authority (666) to the application.
After the preparation above, I checked the application can be started by inputting the command “/home/root/[app name]” or /etc/init.d/test.sh on legato.
Please guide me in this regards.
---
### Author:  [@jyijyi](https://mangoh.discourse.group/u/jyijyi)
#### Post date: [April 12, 2021, 6:59am UTC](https://mangoh.discourse.group/t/application-auto-start-at-boot-on-wp8548-firmware-release14/8303/2 "2021-04-12T06:59:36Z")
you can see here that no problem is found on WP76 R9:
> **[Adding scripts to run at startup](https://forum.legato.io/t/adding-scripts-to-run-at-startup/2412/7)**
>
> I just tried on WP76 R9, I found that modifying mount\_early is not working. Instead I modify /etc/init.d/startlegato.sh, and I can add my command there. case “$1” in start) echo “Legato start sequence 123” echo 123 \> /tmp/123.txt You can...
---
### Author:  [@u\_6s](https://mangoh.discourse.group/u/u_6s)
#### Post date: [April 22, 2021, 5:16am UTC](https://mangoh.discourse.group/t/application-auto-start-at-boot-on-wp8548-firmware-release14/8303/3 "2021-04-22T05:16:32Z")
@jyijyi
Sorry for the late reply, and Thank you for your information.
I use startlegato.sh on WP8548 like the following.
“touch in test.sh” works, but my application “/home/root/ctrl\_gpio” doesn’t work.
I want to start ctrl\_gpio by using startlegato.sh at boot.
(ctrl\_gpio simply changes the value of a particular GPIO pin. )
If you have any ideas, Could you give any advice?
```
--startlegato.sh---
LEGATO_START=/mnt/legato/start
case "$1" in
start)
echo "Legato start sequence"
$LEGATO_START
etc/init.d/test.sh
--test.sh---
/home/root/ctrl_gpio 33 1 100 &
touch /home/root/test_.txt
```
---
### Author:  [@jyijyi](https://mangoh.discourse.group/u/jyijyi)
#### Post date: [April 22, 2021, 7:25am UTC](https://mangoh.discourse.group/t/application-auto-start-at-boot-on-wp8548-firmware-release14/8303/4 "2021-04-22T07:25:05Z")
Try to start a new shell and add a delay
–startlegato.sh—
LEGATO\_START=/mnt/legato/start
case “$1” in
start)
echo “Legato start sequence”
$LEGATO\_START
etc/init.d/test.sh &
–test.sh—
sleep 10
/home/root/ctrl\_gpio 33 1 100 &
touch /home/root/test\_.txt
---
### Author:  [@u\_6s](https://mangoh.discourse.group/u/u_6s)
#### Post date: [April 26, 2021, 8:38am UTC](https://mangoh.discourse.group/t/application-auto-start-at-boot-on-wp8548-firmware-release14/8303/5 "2021-04-26T08:38:41Z")
Thank you for your additional information.
I understand that you mean I must consider the time for creating a path to the app.
I tried it but only my app still doesn’t start.
Are there any point I have to check?
- Authority for the app or making symbolic link to a particular directory?
-Otherwise, I misunderstand how to build the app?
But, the application starts by using command after logging in to legato.
So, I wonder why the app doesn’t start when I use startlegato.sh.
---
### Author:  [@jyijyi](https://mangoh.discourse.group/u/jyijyi)
#### Post date: [April 26, 2021, 8:53am UTC](https://mangoh.discourse.group/t/application-auto-start-at-boot-on-wp8548-firmware-release14/8303/6 "2021-04-26T08:53:51Z")
how about building an unsandboxed helloworld legato application and inside calling your application ctrl\_gpio by system("/home/root/ctrl\_gpio 33 1 100 \n"); ?
---
### Author:  [@u\_6s](https://mangoh.discourse.group/u/u_6s)
#### Post date: [April 28, 2021, 8:33am UTC](https://mangoh.discourse.group/t/application-auto-start-at-boot-on-wp8548-firmware-release14/8303/7 "2021-04-28T08:33:19Z")
By using startlegato.sh, only “helloworld” can starts.
I built “helloworld” on mangoh VM.
> int main(void){
> printf(“hello,world!\n”);
> return 0;
> }
However, with the following source, ctrl\_gpio doesn’t start.
> ```
> int main(void){
> printf("hello,world!\n");
> system("/home/root/ctrl_gpio 33 1 50 &");
> return 0;
> }
>
> ```
Actually, I use shared shared object (/home/root/lib.so) built on mangoh VM.
I also grant an authority (777) to the application and I can call ctrl\_gpio by command on legato.
So, I think the cause of this trouble happens when I use lib.so and startlegato.sh.
Are there any rules that I should use for using a shared object in this case?
---
### Author:  [@jyijyi](https://mangoh.discourse.group/u/jyijyi)
#### Post date: [April 28, 2021, 9:01am UTC](https://mangoh.discourse.group/t/application-auto-start-at-boot-on-wp8548-firmware-release14/8303/8 "2021-04-28T09:01:06Z")
I am saying to build this helloworld by unsandboxed legato application
---
### Author:  [@u\_6s](https://mangoh.discourse.group/u/u_6s)
#### Post date: [May 6, 2021, 1:54am UTC](https://mangoh.discourse.group/t/application-auto-start-at-boot-on-wp8548-firmware-release14/8303/9 "2021-05-06T01:54:05Z")
Sorry, I misunderstood your advice.
Actually, I am not familiar with unsandboxed legato application, but I will look for how to build as unsandboxed legato application and try it!