Getting voxl-streamer running

Eric Katzfey

Okay, so don't do the auto download and install of packages after flashing system image 3.1.0. And don't run any of the voxl-configure-* scripts. See if you can just flash system image 3.1.0 without any other packages and then run the steps.

MattO

@Eric-Katzfey Ok, that worked. Fresh image with just camera server and streamer. Was able to stream hi res over voxl wifi connection to VLC on a laptop. I'm going to try enabling things one step at a time and see how far I get.

MattO

Thanks for the help Eric. Currently I have pretty much the bare bones stuff installed, see screenshot below. camera-server and streamer up and running, and getting video on a host computer via VLC or QGC. I think we can consider this one solved!

For completeness here, you can start with a clean image, then:
Update /etc/opkg/opkg.conf by un-commenting the last line for include development packages: src/gz dev http://voxl-packages.modalai.com/dev

Ensure you're connected to the internet via voxl-wifi station mode.

opkg update

opkg install voxl-suite-dev

Lynn Koudsi

Hi @RichieRich @MattO ,

I've followed this thread cause I got the same issue when attempting to run voxl-streamer, but I'm now getting a different error after a clean installation of the image 3.1.1 without installing the voxl suite:

This is all I have installed:

Thank you in advance!

Eric Katzfey

Our dev repo is very active and occasionally we end up with some dependency mismatches in it. I fixed the problem with voxl-streamer. Can you please start with a fresh install of the system image and follow the instructions in this thread to try again? It should all be working now. Thanks!

Lynn Koudsi

@Eric-Katzfey Hi Eric,

Thanks for the reply!

I actually found the issue. the camera server was broadcasting under /run/mpa/hires_preview when vox-streamer was looking for run/mpa/hires/preview so I just changed that value in the script and it works

Eric Katzfey

@Lynn-Koudsi Great! Yep, that was the issue

Dean Fortier

Hi @Lynn-Koudsi and @Eric-Katzfey,

I am having the same issue as you Lynn where I am getting the error:

yocto:/# voxl-streamer
Using configuration file /etc/modalai/voxl-streamer.conf
closing FDs for client channel 0
ERROR: Couldn't open MPA pipe /run/mpa/hires/preview/

Where is the script where you changed /run/mpa/hires_preview?

Thanks,

Dean

Eric Katzfey

@Dean-Fortier It is in the voxl-streamer configuration file. /etc/modalai/voxl-streamer.conf.

Eric Katzfey

@Dean-Fortier BTW, The latest software installer is now available at https://developer.modalai.com/asset. With the new release you won't need to modify the configuration file manually. (beta) VOXL Platform Release 3.2.0-0.3.4-b https://developer.modalai.com/asset/download/69

Dean Fortier

Hi @Eric-Katzfey,
Thanks for the tip, I installed the 3.2.0-0.3.4-b release and still have the same issue. Also I am not sure what to modify in the voxl-streamer.conf file. I modified line 6 from:

"mpa-camera": "hires_preview" },

to:

"mpa-camera": "hires/preview" },

but I think I am missing something as I am getting the same error message.

Thanks,
Dean

Eric Katzfey

@Dean-Fortier The issue with the path was that, originally, it was specified as "hires/preview". This is where voxl-camera-server created the pipe and where voxl-streamer looked for it. In a newer version of voxl-camera-server, the name changed to "hires_preview". Until voxl-streamer was updated, you had to manually go into the configuration file and change it yourself. Now voxl-streamer has been updated and the manual change is no longer necessary. That is what is in 3.2.0-0.3.4-b. You can take a look at the directories yourself to see what voxl-camera-server is doing. After a power cycle and before you start voxl-camera-server you should see something like this:

yocto:/run/mpa# ls
imu0  imu1

And then after starting voxl-camera-server you will see the new directories:

yocto:/run/mpa# ls
hires_preview  imu0  imu1  stereo  tracking

If you don't see those directories then the problem is somewhere else.

Dean Fortier

@Eric-Katzfey Thanks for the explanation, I was not starting the voxl-camera-server before.

When I started the voxl-camera-server, I had my camera configuration include the tracking camera which stopped the voxl-camera-server from starting correctly.

Once I changed my camera configuration with voxl-configure-cameras to "hires only" I was able to start the camera server and then start the voxl-streamer as well.

Gaurav Borade

This post is deleted!