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Flarm data / checksum error causes exit from navigation mode on Android


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Alastair Mutch
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I'm using 3.13.3.0 on an Android tablet - Samsung S2 - with data from a Powerflarm via an Airconnect wifi interface. 

A couple of times now I've got a pop-up dialogue saying "Flarm data invalid" along with a flarm data string displayed. Clicking to acknowledge this results in the program going back to planning mode.  This has happened on the ground before take-off only and not in the air (so far at least).

Interesting enough I was playing with the set-up in the house with both the tablet and my PC connected to the Airconnect and Skydemon running in navigation mode on both.  Both were using the current latest version - 3.13.3  When I got the error on the tablet the PC continued quite happily with the data with no errors.

If it is a checksum error on a data sentence please, please, please could you just dump that sentence and continue on to the next. I don't really want to know about what is probably a single bit error in the data transfer.  If there are multiple or frequent errors then by all means put up a warning or refuse to use the data stream.  Yes it shouldn't go wrong... but it obviously can do. 

Thanks.

Alastair


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Alastair Mutch
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Alastair Mutch - 1/24/2020 8:00:59 PM
Tim Dawson - 1/24/2020 12:16:15 PM
Is there a Bluetooth connector for FLARM data that is in widespread use? We also see the benefits that using Bluetooth instead of Wifi could bring to the user, and would consider supporting such a configuration.

Hi Tim,
Most of the current OEM PowerFlarm implementations include a bluetooth serial interface. I have a Flarm BAT that includes one.
There is also the option to use the Soartronic Bluetooth interface that goes in line between the Flarm and the Flarm Display. This is a hobby board but has been done to a good standard (tested even) and works well. I have one of these in our Falke and in a couple of our club gliders to allow easy connection of a phone or nav device via bluetooth.. 

The advantage is that the BT can run on internal battery for the FlarmBat, PF Portable and PowerMouse. The Airconnect device requires external 12V in all cases and is generally an over-complicated pain. 

Alastair



Thinking about it the Soartronic solution probably doesn't help much as they haven't done the Apple dance to get approval.  It's OK for  me with Android devices :-)
The LXNav and LxNavigation power flarm devices do support iOS. 



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Alastair Mutch - 1/18/2020 7:29:57 PM
Tim Dawson - 1/20/2020 10:42:23 AM
Alastair Mutch - 1/20/2020 1:57:16 PM
Alastair Mutch - 1/20/2020 5:03:40 PM
Alastair Mutch - 1/20/2020 7:47:28 PM
                         I spoke too soon. I got an Unexpected GPS error after a couple of...
Alastair Mutch - 1/20/2020 10:07:02 PM
Tim Dawson - 1/21/2020 11:01:59 AM
Alastair Mutch - 1/21/2020 12:21:15 PM
Tim Dawson - 1/23/2020 11:19:10 AM
Alastair Mutch - 1/23/2020 1:18:06 PM
Alastair Mutch - 1/24/2020 7:54:17 PM
Tim Dawson - 1/24/2020 12:16:15 PM
Alastair Mutch - 1/24/2020 8:00:59 PM
Alastair Mutch - 1/24/2020 8:30:55 PM
Tim Dawson - 1/27/2020 12:11:51 PM
Alastair Mutch - 1/27/2020 2:27:58 PM
ken@blackman.co.uk - 2/4/2020 1:27:56 PM
ken@blackman.co.uk - 2/4/2020 1:29:30 PM
Alastair Mutch - 2/4/2020 7:21:31 PM
tarutino - 3/20/2020 7:40:00 AM
Alastair Mutch - 3/20/2020 10:13:27 AM
                         Hello Alastair, thank you very much for your Description. I have...
tarutino - 3/23/2020 2:43:39 PM
                         Dear Alastair, I have been struggling with the same data transfer...
Europa XS - 6/1/2020 10:35:18 AM
                             Dear Herbert, The instructions are dependant on the type of Wifi unit...
Alastair Mutch - 6/1/2020 1:34:31 PM
ken@blackman.co.uk - 3/20/2020 11:50:25 AM
Tim Dawson - 3/23/2020 11:38:27 AM
Alastair Mutch - 3/23/2020 11:42:32 AM
ken@blackman.co.uk - 3/23/2020 2:56:21 PM
                 Hi Ken, which firmware is on your PF Portable?
Fliegerpeer - 5/5/2020 10:08:07 AM
ken@blackman.co.uk - 5/18/2020 12:38:17 PM

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