Need some FSUIPC / LUA help reading A:Vars

[Raysot]

Greetings all,

I'm hoping someone has some insight into why certain A:Vars can't be read by LUA using the FSUIPC LUA engine.

Specifically, I'm trying to read the following A:Vars:

CIRCUIT SWITCH ON:73

CIRCUIT ON :125

I'm using the call: 

RudderBoost = ipc.readLvar("CIRCUIT SWITCH ON:73")

Using the SimVar Watcher tool that comes with the 2020 SDK, I can get values from that A:Var

I've tried several variations, like ipc.readLVar("A:CIRCUIT SWITCH ON:73") and ipc.readLVar("A:CIRCUIT SWITCH ON,73")

...and a few other variants, all returning NIL.

It's a stupid-simple script so I won't take up text real estate with the other stuff. I have had success in reading most other L:Vars and offsets, but not A:Vars

Hope somebody can help!

[John Dowson]

Which version of FSUIPC and what FS are you using? If its FSUIPC7 / MSFS, please use the specific sub-forum for this product.

No A-type variables (also known as simvars) can be read via lua. The only A-type variables can be read are those that are held in FSUIPC offsets.

7 hours ago, Raysot said:

I've tried several variations, like ipc.readLVar("A:CIRCUIT SWITCH ON:73") and ipc.readLVar("A:CIRCUIT SWITCH ON,73")

...and a few other variants, all returning NIL.

Of course, as these facilities are for L-type variables, or lvars, only. You cannot use them for any other variable type.

So, A-type variables (simvars) can only be accessed (read/write) via FSUIPC offsets. Facilities are provided to add any simvar to a free/spare FSUIPC offset (see the Advanced User guide) using a file called myOffsets.txt. So you can add them to a spare/free FSUIPC offset, and then use the appropriate lua offset function to read the value.

 

[Raysot]

Quote

using a file called myOffsets.txt

That was the ticket!. I didn't even know about this facility. Thanks for the info. I've tested it with my 2 A:Vars that I've been struggling with and it works like a charm.

Thanks, John 😁 

[John Dowson]

👍