---------- Weitergeleitete Nachricht ----------
Von: "Tobias Bieniek" <tobias.bien...@gmx.de>
Datum: 28.02.2013 07:14
Betreff: Re: [Xcsoar-user] XCSoar 6.5_beta1 released
An: "GoFly Instruments" <goflyinstrume...@gmail.com>
Cc:
> Hi guys,
>
> If I remember correctly I implemented exactly like that, so that 999999
is ignored as a pressure value. I still believe that this protocol is very
badly designed since the NMEA standard is leaving fields empty that are not
used, but it should work fine with the current version of XCSoar.
>
> Thanks for the fast reply.
>
> Turbo
>
> Am 28.02.2013 02:27 schrieb "GoFly Instruments" <
goflyinstrume...@gmail.com>:
>
>>
>> Team,
>> I am GoFly project developer and inventor. It is mainly device (realtime
>> pressure sensor/acoustic variometer) for para/hangliders and others.
>> Last week I released newer firmware version and I decided to cut down
>> altitude output from LK8EX (GT Altimeter) protocol. Based on protocol
>> description, "Field 1" is not necessary if real time raw pressure is
>> available. So instead of making unnecessary altitude calculations, I am
>> sending out 99999 value.
>>
>> I am not sure if this is affecting XCSoar, but I think it should be fine
>> just with raw pressure. I didn't make tests with XCsoar yet after change.
>>
>> Regards and Thank for great software
>> Jarek
>> goflyinstruments.com
>>
>>
>> /*
>> LK8000 EXTERNAL INSTRUMENT SERIES 1 - NMEA SENTENCE: LK8EX1
>> VERSION A, 110217
>> LK8EX1,pressure,altitude,vario,temperature,battery,*checksum
>>
>> Field 0, raw pressure in hPascal:
>> hPA*100 (example for 1013.25 becomes 101325)
>> no padding (987.25 becomes 98725, NOT 098725)
>> If no pressure available, send 999999 (6 times 9)
>> If pressure is available, field 1 altitude will be ignored
>>
>> Field 1, altitude in meters, relative to QNH 1013.25
>> If raw pressure is available, this value will be IGNORED (you can set it
>> to 99999
>> but not really needed)!
>> (if you want to use this value, set raw pressure to 999999)
>> This value is relative to sea level (QNE). We are assuming that
>> currently at 0m altitude pressure is standard 1013.25.
>> If you cannot send raw altitude, then send what you have but then
>> you must NOT adjust it from Basic Setting in LK.
>> Altitude can be negative
>> If altitude not available, and Pressure not available, set Altitude
>> to 99999 (5 times 9)
>> LK will say "Baro altitude available" if one of fields 0 and 1 is
>> available.
>>
>> Field 2, vario in cm/s
>> If vario not available, send 9999 (4 times 9)
>> Value can also be negative
>>
>> Field 3, temperature in C , can be also negative
>> If not available, send 99
>>
>> Field 4, battery voltage or charge percentage
>> Cannot be negative
>> If not available, send 999 (3 times 9)
>> Voltage is sent as float value like: 0.1 1.4 2.3 11.2
>> To send percentage, add 1000. Example 0% = 1000
>> 14% = 1014 . Do not send float values for percentages.
>> Percentage should be 0 to 100, with no decimals, added by 1000!
>> */
>>
>> On 2/27/2013 4:25 PM, Henrique Frasson wrote:
>>
>> > 2. There is a new GoFlyPico vario protocol, removed altitude
>> > calculations from LK8EX output protocol. It is sending pressure values.
>> >
>> > $LK8EX1,101135,99999,4,36,1000,*1D
>> > $LK8EX1,101133,99999,22,36,1000,*2
>> >
>>
>>
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