I have problems getting proper FrSky telemetry values on my Taranis using a X8R Receiver.
The only values that seem to work fine are VFAS and Fuel.
Especially Hdg (always at 0.00°) and GPS coordinates/dates (random values) seem broken. I also would like to have the current flight mode in Tmp2 or so, like the Teensy Mavlink converter offers.
Why using an additional converter when there’s build-in telemetry support?
I tried deleting all sensors and rediscovering them without success.
Can anyone confirm that FrSky telemetry for SPort receivers isn’t broken in the master build? Or am I missing something, like the telemetry output isn’t Taranis compatible?
Master firmware of 2016-05-21T14:07:14.000Z for FMUv2
Taranis Plus with OpenTX 2.1.8
X8R connected with self-made TTL-RS232-converter with diode on Serial 2
SYS_COMPANION set to FrSky Telemetry
I have made some changes in this PR https://github.com/PX4/Firmware/pull/4349 to better support LUA scripts (which offset the nav_state by 128 in Tmp2), but since that got merged, a big new change in the way openTx handels custom telemetry values has happened (custom DIY values, that can be parsed by lua scripts - like PixPilot - and thus there has been a rewrite in this new PR here to support the new DIY ids: https://github.com/PX4/Firmware/pull/4361.
As you see, some values like the heading and the GPS data are still not yet correctly sent, as I still need to reverse engineer how the taranis decodes the values. I’m traveling, but once I’m home I’ll have the chance to correct and verify the way gps values (especially date and time) are sent. Please try my changes in the latest PR mentioned above and let me know if you have any inconsistencies in the telemetry data
thanks for your answers!
Sadly, currently I don’t have enough time to create an environment to compile PX4 myself and test code. Maybe in a few days.
In the past I created a converter for the Walkera X350 Pro (https://github.com/bobness09/devom2frskyMetry), so I have some experience in telemetry stuff.
I’d like to flash new test builds to support you!
Instead of reverse engineering the OpenTX receiving library, maybe we should look at this library:
Sweet, thanks for mentioning the library, that should make things a lot easier
I’ll probably have a bit more time to look at it tomorrow (I’m quite busy with https://github.com/PX4/Firmware/pull/4624 and I should probably study for uni…)
Actually, if you haven’t seen it yet, I’m also working on a lua library/collection named PixPilot! Have a look at the (still a bit lean) Documentation!