HeloTrim,can't get it to work

[omc25123]

Dear Pete,

I'am trying to get the "HeloTrim function" to work.

I did the following:

in fsuipc.ini added under: [JoystickCalibration.HELI] ; ApplyHeloTrim=YES.

Made a small lua to write to offset 0BBE (one for trim up one for trim down)

And made a small lua to display same offset value.

The good news is, the value goes up and down as expected.

But in the Heli (stnd bell) nothing changes.

I'am doing something wrong! but what . .

 

 

I suspected it has something to do with: "Note that, as a precaution, the trim value will 

never be added to the relevant axis if the normal trim value is non-zero."

And tried to force the normal trim offsets to zero ( ipc.writeSW(0x0BC0, 0) and ( ipc.writeSW(0x3338, 0)

But that didn't help.

 

Can you point me in the right direction?

Thanks, Erik

 

 

 

 

The functions:

function Helo_Trim_up()

current_trim = ipc.readSW(0x0BBE)

new = (current_trim + 5000)
ipc.writeSW(0x0BBE, new)
end --func

 

function Helo_Trim_dn()
current_trim = ipc.readSW(0x0BBE)

new = (current_trim - 5000)
ipc.writeSW(0x0BBE, new)
end --func

------------------------------

ipc.setdisplay(10,1000,140,1)

while 1 do
ipc.sleep(100)

current_trim = ipc.readSW(0x0BBE)

ipc.lineDisplay("Heli trim = "..current_trim)
end

 

 

 

 

[Pete Dowson]

I'am trying to get the "HeloTrim function" to work.

 

This is a facility i remember very little about, and i've never been a helo user.. So let me first check things according to the documentation.

 

First, the usual essential information, missing in your question. Is this with FS2000, FS2002, FS2004, FSX, or P3D, and which actual version of FSUIPC?

 

in fsuipc.ini added under: [JoystickCalibration.HELI] ; ApplyHeloTrim=YES.

 

And "HELI" is the current Profile?

 

Is it only pitch trim you want, no bank trim too? If so, is the elevator axis calibrated through FSUIPC? The facility only adds the value to the current control axis -- elevator or aileron, as appropriate, and sends it on to FS accordingly.

Made a small lua to write to offset 0BBE (one for trim up one for trim down)

And made a small lua to display same offset value.

The good news is, the value goes up and down as expected.But in the Heli (stnd bell) nothing changes.

 

Well it could hardly not do so, as it is write enabled..

 

I suspected it has something to do with: "Note that, as a precaution, the trim value will 

never be added to the relevant axis if the normal trim value is non-zero."

And tried to force the normal trim offsets to zero ( ipc.writeSW(0x0BC0, 0) and ( ipc.writeSW(0x3338, 0)But that didn't help.

 

3338 is a read-out, not a value you write to.  Is offset 0BC2 zero ?  That's the elevator trim indicator, and the place used by FSUIPC.

 

The functions:

 

And how are those functions called?

 

Have you tried using logging to see what happens to the elevator axis? FSUIPC logging tab, axis event logging. The parameter for the axis named "KEY_AXIS_ELEVATOR_SET" should have whatever value you have in offset 0x0BBE subtracted from it. This will occur whenever the elevator axis changes, or 0xBBE is written to. The axis value used is the one from offset  0x0BB2. (If that offset is written to, the same adjustment is applied).

 

Pete

 

[omc25123]

To be complete, my answers: FSX, 4.931, HELI is current profile, only pitch trim is wat i want,

logged offset 0BC2 and there was the problem, it was at 54 (not zero).

adapted my functions, now every time i give a trim input, also ipc.writeSW(0x0BC2, 0) is writen and that solved my problems!

thanks for pointing me in the right direction! 

brds Erik