I want to use Raspberry PI's system command `raspistill`to take images in a c program, the program line is: `system("raspistill -q 5 -vf -hf -o pic1.jpg -t 1 -th 0:0:0");`

However, when I run the program sometimes error occurs, 
it shows that:

> 
> mmal\_vc\_component\_enable- failed to enable component- ENOSPC
>  mmal- camera component couldn't be enabled
>  mmal- main- Failed to create camera component
>  mmal- Failed to run camera app. Please check for firmware updatesckquote
> 
> 
> 

And I have tried to add some parameters into /boot/config.txt:

> 
> gpu\_mem=128 start\_file=start\_x.elf fixup\_file=fixup\_x.dat  
> 
>  disable\_camera\_led=1 cam\_lwm=16 cam\_hwm=32 cam\_offline\_start=16
> 
> 
> 

However the error still always occurs sometimes (sometimes ok). I really want to solve this problem in order to continue my project. What should I do?
['https://Stackoverflow.com/questions/29314841', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/4407689/']
Stop any other processes using the camera (e.g.raspimjpeg)

```
$ ps -aux

```

// locate the process pid and kill it using the pid number (e.g. 764)

```
$ sudo kill 764

```

Note: You might have more than one process running so be sure to kill them all before trying again.
finally i can solve this problem after a lot of hours troubleshooting.

I already share it in my YouTube (<https://youtu.be/on8UlkRvLok>)

This problem only occur in camera raspberry pi V2.1 (IMX219) from **Element14**. But in camera raspberry pi V2.1 from **OKdo**, i don't get this error

So, the solution when error
"mmal: mmal\_vc\_component\_enable: failed to enable component: ENOSPC
mmal: camera component couldn't be enabled
mmal: main: Failed to create camera component
mmal: Failed to run camera app. Please check for firmware updates"

You **need some initialization** with a works camera (me camera from **OKdo**).
So, the step is

1. Plug your works camera to Raspberry Pi (me using Raspberry Pi 4B)
2. Turn on your Raspberry Pi
3. check "vcgencmd get\_camera" to make sure your hardware is detected the camera
4. capture image using "raspistill -v" and camera will capture the image
5. Then replace the works camera with ENOSPC Error Camera (from **Element14**)
6. then try to capture the image "raspistill -v" and the ENOSPC Error will not occur

**Notes:**

* But, after the ENOSPC Error Camera works, and then you restart/shutdown the raspberry pi, the error will occur again :(

OS Raspberry Pi 4 Model B (4GB)

* Linux raspberrypi 5.10.60-v7l+ #1449 SMP Wed Aug 25 15:00:44 BST 2021 armv7l GNU/Linux