Landing Altitude and HGS setting display

rayp

Has anyone found out how to adjust these two items without using a mouse. I have been trying using the Variables map and the Interface codes and LINDA but cannot get them to work. I tried using the Lvars quoted for the Landing Altitude gauge using a rotary encoder but the needle just jumped randomly all round the dial. I used the codes and values for the HGS to set up button instructions but when the buttons were pressed nothing happened to the values on the little screen on the Centre Pedestal. Any help will be gratefully accepted .

aua668

Hi,

The landing altitude is handled in the XML interface via the variable

Air_->controls.landing_altitude_input

The calculation from feet to the value which you write into this variable is a bit tricky, if you read the documentation of that field. In LUA you could use a function like this to get the value from feet:

function LdgAlt (pAlt)

    local lAlt = 65535 * ( 1 -( pAlt + 2000 ) / 16000 )

    if lAlt > 65535 then
        lAlt = 65535
    end

    if lAlt < 0 then
        lAlt = 0
    end

    return lAlt

end

In the documentation you find, that the range is from 0 (14000ft) to 0xFFFF (-2000ft).

Rgds
Reinhard

aua668

Hi,

For the HGS I would try to use the XML variable HGS_->HUDControls.keyInput
According to the documentation you must send the number listed after each command to trigger the key:

HGSPANEL_KEY_MODE 1
HGSPANEL_KEY_STBY 2
HGSPANEL_KEY_RWY 3
HGSPANEL_KEY_GS 4
HGSPANEL_KEY_CLR 5
HGSPANEL_KEY_BRT 6
HGSPANEL_KEY_DIM 7
HGSPANEL_KEY_ENTER 8
HGSPANEL_KEY_TEST 9
HGSPANEL_KEY_0 10
HGSPANEL_KEY_1 11
HGSPANEL_KEY_2 12
HGSPANEL_KEY_3 13
HGSPANEL_KEY_4 14
HGSPANEL_KEY_5 15
HGSPANEL_KEY_6 16
HGSPANEL_KEY_7 17
HGSPANEL_KEY_8 18
HGSPANEL_KEY_9 19

I personally did not test this so I don't now, if it works. To fire the mode switch I would try to send a one to this control via the XML interface.

Rgds
Reinhard

rayp

Thank you for your input. I will use the LUA function for the landing altitude and I managed to solve the HUD problem as you suggested.