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 Unknown error on declare to Swiss Flarm
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jr970
New Entry

United Kingdom
3 Posts

Posted - 12/04/2018 :  16:23:30  Show Profile  Reply with Quote
Just installed LK8000/Oudie in a friends glider. We connected it to his Swiss Flarm unit & it is receiving data OK - I get "FLARM DETECTED" and Barometric altitude and all the FLARM menus are active.

I can also get the Flarm to re-boot OK from the Flarm menu in LK8000, so I think that means communication is two-way.

However when I try to declare a task it fails with "Unknown Error".

I have configured:
Device A as the internal Oudie GPS (Com 1), Generic
Device B as the Flarm (Com 4, 19,200bps). Generic

Any ideas what is causing this ? do I need to have Flarm as Device A? Or could it mean that the Flarm is non-IGC ? ...... glider only just purchased with the Flarm already installed.

Any other ideas ?

AlphaLima
Moderator

Germany
1978 Posts

Posted - 23/04/2018 :  13:22:18  Show Profile  Visit AlphaLima's Homepage  Reply with Quote
As far as I know, non-IGC do not allow Task declarations.
IGC Flarm use to have "IGC approve" stickers on the housing.

You can also find out if it is a IGC Flarm by watching the serial monitor inside LK8000 device Dialog, restart flarm and look init checks written at the serial monitor.
Shuld somehow look like this (IGC + ENL):

Startup: After clean shutdown
o.k. 16 Mbit internal FLASH memory
o.k. ENL
o.k. Obstacles Init
o.k. Logging Init
o.k. UART
o.k. RF subsystem
o.k. Pressure sensor
..........

Edited by - AlphaLima on 23/04/2018 13:56:08
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andydasmith
Pulcino

United Kingdom
59 Posts

Posted - 25/04/2018 :  20:37:13  Show Profile  Visit andydasmith's Homepage  Reply with Quote
I have an IGC (Swiss)Flarm connected to a Kobo Touch which is unable to declare a task to the Flarm.
When I change to XCSoar the configuration is able to declare to the Flarm without problems.
I believe there is a problem with the current build.
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AlphaLima
Moderator

Germany
1978 Posts

Posted - 26/04/2018 :  16:24:57  Show Profile  Visit AlphaLima's Homepage  Reply with Quote
Is it connected directly to the Kobo or is there a vario or something similar mixing NMEA sentences.
Of so, this is a known problem already fixed for Version after the 7.0 release:
https://github.com/LK8000/LK8000/pull/1182
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andydasmith
Pulcino

United Kingdom
59 Posts

Posted - 01/05/2018 :  23:24:22  Show Profile  Visit andydasmith's Homepage  Reply with Quote
I have a Swiss Flarm and a KRT2 radio connected to a Kobo Touch with the latest official LK8000 version through a 4-way usb OTG hub.
This configuration suffered frequent disconnects (buffer under-runs) until I read a post here which mentioned that cheap hubs automatically fall back to the slowest baud rate. Since I have set both to 9600 baud the system appears stable.....but unable to declare
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AlphaLima
Moderator

Germany
1978 Posts

Posted - 01/05/2018 :  23:40:03  Show Profile  Visit AlphaLima's Homepage  Reply with Quote
Yes, should also be solved with the above mentioned fix! However 9k6 for FLARM is not a good idea, FLARM disables the traffic data below 19k2Bd due to limited bandwidth.
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