Localiser capture (SIOC)

[lasseh]

Hello. Hope you're all enjoying the summer out there! :)

I'm trying to get an annunciator to illuminate when my aircraft is capturing a localiser, and so far I've learned that the offsets I'm going to use are 0C4A bit 1 for the localiser tuned in, and then 0C48 to adjust when the localiser is actually captured. But which bit-number am I going to use for the needle?

I've tried to write a script here:
---------------------------------------------------------------------
Var 0001, name loc_tuned, Link FSUIPC_INOUT, Offset $0C4A, Length 1
{
IF &loc_tuned = 1
{
&loc_tuned_ind = 1
}
IF &loc_tuned = 0
{
&loc_tuned_ind = 0
}
}

Var 0002, name loc_tuned_ind, Link IOCARD_OUT, Device 1, Output 41
--------------------------------------------------------------------

This light up the LED when the localiser is tuned in at the NAV1 radio as anticipated. But how do I implement the needle offset, so that the LED will only illuminate when the localiser is tuned in, AND captured?

Thanks!
Lasse

[kiek]

Hi Lasse,

Here example SIOC code to display the GS needle and Localiser needle values -if alive- at four digit
displays (most left digit blank or minus and then 3 digit value), and two leds for GS alive and loc
tuned in indicators.

You have to update the digit and output numbers to your hardware.
I have not tested it, but this is how one should do it in SIOC...



// Glide-slope

Var 1 name gs_alive Link FSUIPC_IN Offset $0C4C Length 1
{
CALL &OUTGS
}

Var 2 name gs Link FSUIPC_IN Offset $0C49 Length 1
{
CALL &OUTGS
}

Var 3 name OUTGS LINK SUBRUTINE
{
IF &gs_alive = 1
{
gs_ind = 1
&D_gs = &gs
IF &gs < 0
{
D_gss = -999998 // minus sign
}
ELSE
{
D_gss = -999999 // blank
}
} ELSE
{
gs_ind = 0
&D_gs = -999999 // blank
&D_gss = -999999 // blank
}
}

Var 4 name D_gs Link IOCARD_DISPLAY Digit 1 Numbers 3
Var 5 name D_gss Link IOCARD_DISPLAY Digit 4 Numbers 1
Var 6 name gs_ind Link IOCARD_OUT Device 1 Output 40


// Localiser

Var 10 name loc_tuned Link FSUIPC_IN Offset $0C4A Length 1
{
&loc_tuned_in = TESTBIT &loc_tuned 1
}

Var 11 name loc_tuned_in
{
CALL &OUTLOC
}

Var 12 name loc Link FSUIPC_IN Offset $0C48 Length 1
{
CALL &OUTLOC
}

Var 13 name OUTLOC LINK SUBRUTINE
{
IF &loc_tuned_in = 1
{
loc_tuned_ind = 1
&D_LOC = &loc
IF &loc < 0
{
D_locs = -999998 // minus sign
}
ELSE
{
D_locs = -999999 // blank
}
}
ELSE
{
loc_tuned_ind = 0
&D_loc = -999999 // blank
&D_locs = -999999 // blank
}
}

Var 14 name D_loc Link IOCARD_DISPLAY Digit 5 Numbers 3
Var 15 name D_locs Link IOCARD_DISPLAY Digit 8 Numbers 1
Var 16 name loc_tuned_ind Link IOCARD_OUT Device 1 Output 41

Rgrs,
nico