GenServer exiting with :unexpected_exit

[ricn]

Hi,

I just tried to use picam on my Raspberry Pi 3 running Nerves but I only get this error:

iex(rpi3@192.168.1.251)1> Picam.Camera.start_link {:ok, #PID<0.440.0>} iex(rpi3@192.168.1.251)2> 20:10:04.387 [warn] Camera GenServer exiting: :unexpected_exit

22:10:24.982 [error] GenServer Picam.Camera terminating (stop) :unexpected_exit Last message: {#Port<6189.2630>, {:exit_status, 1}} State: %{port: #Port<6189.2630>, requests: []} (EXIT from #PID<0.437.0>) :unexpected_exit

Am I doing something wrong?

[fhunleth]

You didn't do anything wrong. Apparently we need some better error reporting.

I'm wondering if it is possible for you to try running the raspijpgs binary manually. For example, via :os.cmd or by going to a shell (either by setting up erlinit to exit to a shell or by including Nerves.Runtime and typing "CTRL-G, s sh, c". You can find binary in :code.priv_dir(:picam). All of the places where it exits are supposed to print something to stderr, so I'm hoping that gives another clue.

[ricn]

Ah thanks. I will try that as soon as I can and report back to you.

[ricn]

This is the error I got when running the raspijpgs command manually using iex:

iex > exe = Path.join(:code.priv_dir(:picam), "raspijpgs") iex > :os.cmd(to_charlist exe)

'mmal: mmal_vc_port_enable: failed to enable port vc.ril.image_encode:in:0(RGBA): ENOMEM mmal: mmal_port_enable: failed to enable connected port (vc.ril.image_encode:in:0(RGBA))0x46b340 (ENOMEM) mmal: mmal_connection_enable: output port couldn\'t be enabled raspijpgs: Could not enable connection resizer -> encoder'

[ricn]

I can also confirm that both raspivid and raspistill works with my Camera using Nerves.

[electricshaman]

Can you try setting gpu_mem to a higher value in /boot/config.txt? Try 192.

gpu_mem=192

[ricn]

It's working now. Thanks! :smiley_cat:

[electricshaman]

Excellent! This seems to only affect the V2 camera modules. I'll make a note in the README.