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avarehelper
http://www.faa.gov/nextgen/programs/adsb/wsa/media/GDL90_Public_ICD_RevA.PDF
3.5.1.4 ALTITUDE
The Altitude field "ddd" contains the pressure altitude (referenced to 29.92 inches Hg), encoded using 25-foot resolution, offset by 1,000 feet. The 0xFFF value represents that the pressure altitude is invalid. The minimum altitude that can be represented is -1,000 feet. The maximum valid altitude is +101,350 feet.
Altitude | Value |
---|---|
-1,000 feet | 0x000 |
0 feet | 0x028 |
+1000 feet | 0x050 |
+101,350 feet | 0xFFE |
Invalid or unavailable | 0xFFF |
Tried importing into android studio and it's complaining about everything.
I believe line 105 should be:
mIcaoAddress = ((((int)msg[1])&0xFF) << 16) + ((((int)(msg[2]) & 0xFF) << 8)) + ((((int)msg[3]) & 0xFF));
Your version does the bitshift prior to the AND, resulting in only the least significant byte being recorded
https://github.com/apps4av/avarehelper/blob/master/src/com/apps4av/avarehelper/BufferProcessor.java
Right now altitude in position report is reported. It should be geo altitude that should be reported, and if not available, ownship altitude.
The last update on Google Play store was in July 2017. There have been several fixes since then. PR #18 is of particular interest since X-plane sync is barely functional in the best case, and nearly completely useless on networks with high UDP packet loss (e.g. the wifi router provided by my ISP).
The only way I can use Avare reliably with X-plane is to build this project myself.
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