Timing issue: LVARS received after LvarOffsets section was parsed

[hotbso]

My LVAR assignments worked 99% of the time and by chance I received an error that looks like a timing issue:

FSUIPC7.ini

[LvarOffsets.Fenix]
1=L:S_FCU_EFIS1_FD=UB0xA000
2=L:S_FCU_EFIS2_FD=UB0xA001
3=L:S_FC_THR_INST_DISCONNECT1=UB0xA002
4=L:S_FC_CAPT_TILLER_PEDAL_DISCONNECT=UB0xA003

[Keys.Fenix]
8=N123,8,x0100A001,x01,x0100A001,x00 	-{F12: Press=offset byte set, offset A001, Release=offset byte set, offset A001 }-
11=N122,8,x0100A000,x01,x0100A000,x00 	-{F11: Press=offset byte set, offset A000, Release=offset byte set, offset A000 }-
12=121,8,L1:R,0 	-{F10: Press=Lua rmp_iface }-

[Buttons.Fenix]
2=PA,0,Cx0100A002,x01 	-{offset byte set, offset A002}-
3=UA,0,Cx0100A002,x00 	-{offset byte set, offset A002}-
4=PB,0,Cx0100A003,x01 	-{offset byte set, offset A003}-
5=UB,0,Cx0100A003,x00 	-{offset byte set, offset A003}-

 

Log File:

    52125 -------------------- Starting everything now ----------------------
   172125 G:\MSFS\Community\fnx-aircraft-320\SimObjects\Airplanes\fnx320\aircraft.CFG
   172141 Sim stopped: average frame rate for last 127 secs = 33.0 fps
   172141    Max AI traffic was 0 aircraft
   172141 -------------------------------------------------------------------
   172172 Starting WAPI...
   172172   [INFO]: **** Starting FSUIPC7 WASM Interface (WAPI) version 0.5.10 (WASM version 0.5.9)
   172172   [INFO]: Connected to MSFS
   173516 Maximum number of custom events available is 1024 (defined by ini parameter MaxNumberOfCustomEvents)
   173531 Aircraft="FenixA320_DLHDAIZI"
   173563   [INFO]: SimConnect_Close done
   177734 C:\Users\holger\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalState\MISSIONS\Custom\CustomFlight\CustomFlight.FLT
   183203 Starting WAPI...
   183203   [INFO]: **** Starting FSUIPC7 WASM Interface (WAPI) version 0.5.10 (WASM version 0.5.9)
   183203   [INFO]: Connected to MSFS
   187391 #### ERROR: No SimConnect data seen for more than set stall time - will attempt to reconnect...
   187391 **** SimConnect Data Stalled! Re-connecting now ... ****
   187641 SimConnect_Open succeeded
   187641 Running in "KittyHawk", Version: 11.0.282174.999 (SimConnect: 11.0.62651.3)
   187641 MSFS version = 11.0.282174.999
   187641 Initialising SimConnect data requests now
   187641 Maximum number of custom events available is 1024 (defined by ini parameter MaxNumberOfCustomEvents)
   187656 User Aircraft ID 1 supplied, now being used
   187656 SimObjects\Airplanes\fnx320\aircraft.CFG
   187672 User Aircraft ID 1 supplied, now being used
   188375 System time = 29/06/2022 18:58:52, Simulator time = 18:58:42 (16:58Z)
   188609 **** Lvar 'S_FCU_EFIS1_FD' not found: cannot add to offset 0xA000
   188609 **** Lvar 'S_FCU_EFIS2_FD' not found: cannot add to offset 0xA001
   188609 **** Lvar 'S_FC_THR_INST_DISCONNECT1' not found: cannot add to offset 0xA002
   188609 **** Lvar 'S_FC_CAPT_TILLER_PEDAL_DISCONNECT' not found: cannot add to offset 0xA003
   188625 Lvars/Hvars received - checking aircraft autos....
  2184703 Sim stopped: average frame rate for last 1997 secs = 32.9 fps

From the time stamps it looks like LVARs were received a few milliseconds after the INI file was parsed.

[John Dowson]

Yes, that does look like it was trying to add the lvars before being received. I will look into this and get back to you.
I suspect that it is trying to add the lvars to offsets after the first group of lvars has been received, or the 'ready' callback is being fired before all lvar name packets have been received, rather than waiting until after all have been received.

John

[John Dowson]

I've just checked this and it looks ok to me - the [LvarOffsets] sections are being processed once all lvars have been received.
So I think the lvars you are using aren't initialised by the time the lvar scan is performed by the WASM, and so aren't being provided to FSUIPC.
This is usually due to the LvarScanDelay WASM ini parameter. Not sure what you are using for this - it defaults to 5 seconds, but for complex aircraft this needs to be increased substantially - to between 45-60seconds for the FBWA320, for example. So I suggest you try increasing this parameter - this should be set in your FSUIPC_WASM.ini, but not the one in your Community folder (otherwise it will be overwritten the next time you update) but the one in the WASM persistent storage area (copy the existing one to this location and modify). Check the Advanced User Guide for details.

John

[hotbso]

Thanks.

LvarScanDelay was not present in the file and added it with a value of 50 as instructed.

I will report back if it ever happens again.

Holger