GDL90 format support for feeding SkyDaemon, FlightPlan-Go and others

[colmoschin94]

Hi,
SkyDeamon is probably the most used EFB in Europe and just like ForeFlight it is fully compatible with XP11.
Among other features SD is capable of displaying Traffic information coming from different types of receivers (eg. GDL-90 receivers), is there any chance to support it just like for ForeFlight?

https://www.skydemon.aero/inflight/traffic.aspx

Thanks a lot.

Matt

[TwinFan]

I wouldn’t call it „fully compatible as ForeFlight“ as SkyDemon doesn’t understand X-Plane‘s rather simple but efficient format for traffic.
The more sophisticated protocols it does understand are capable of way more than we need to transfer just traffic and are hence fairly complex.
So this is not technically impossible, but quite and effort. Given that I haven’t heard of SkyDemon before I would wait to see what the user base actually is.

[colmoschin94]

Thanks TwinFan,
I appreciate your reply and I understand your concerns regarding the addition of new protocols to Live Traffic.
For what is worth I found on github a repository of a GDL90 encoder/decoder that might be used (eventually, one day...) as base to start from, as far as I know the "Stratux" Project uses it to feed traffic to various EFB (including SkyDemon).

https://github.com/etdey/gdl90

Thanks again.

Matt

[TwinFan]

Thx for the effort. etdey‘s library is a) Python, not C/C+c and b) can’t produce self-formatted messages. It can receive, save, and resubmit saved streams only.
I have also not found other more capable libraries, which really can format messages from scratch.

Full specification here. The traffic report is all binary encoded but not tremendously difficult to do. I am more worried about the protocol sugar around (byte order requirements, communication start/stop, message start/stop, maybe even heartbeat requirements). Need to dig into that.

[colmoschin94]

Got it, thanks anyway for checking it =). Matt Il giorno sab 19 ott 2019 alle ore 11:54 TwinFan <[email protected]> ha scritto:

…

Thx for the effort. etdey‘s library is a) Python, not C/C+c and b) can’t produce self-formatted messages. It can receive, save, and resubmit saved streams only. I have also not found other more capable libraries, which really can format messages from scratch. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#160?email_source=notifications&email_token=AD6BTHBWYBC3XHPDN27ESBLQPLKNDA5CNFSM4I6OZI32YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEBXKL4I#issuecomment-544122353>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AD6BTHAL5MOR6TAAMXMVO53QPLKNDANCNFSM4I6OZI3Q> .

[TwinFan]

The GDL90 format discussed here seems to be more widely supported by receiving apps, e.g. discussed for FlightPlan-Go here. That's the reason I just changed the issue's title.