FSX [SOLVED] Coaxial Knobs for Transponder Code : XML gauge

[EPSTS]

Good mooning / afternoon / evening ,

I'm trying to make a TXPNDR gauge like Collins CTL92.

Two coaxial knobs set the active code.
The larger knob changes the two larger digits, and the smaller knob changes the two smaller digits.
The left two digits and the right two digits are independent of each other.

How can I write XML for this operation?

many thanks

 

[tgibson]

Hi,

Use two L: variables for each half. When the knobs are turned, vary those variables using code to display only the correct values. Then combine the two values, convert to BCD and use the K:XPNDR_SET event to set the actual transponder. This could be done in a mouse click section so the transponder is reset after each click.

 

[EPSTS]

Thanks for your reply.

I have tried higher and lower 2-digits-set variables are controlled separately , however , those variables are still in decimals (0-9 each).
How can I combine higher and lower sets , and , convert to octal numbers (0-7).

many thanks

 

[BaiterOne]

You could try (untested)

(L:HigherNumber,number) 100 * (L:LowerNumber,number) + (>L:XPNDRNums,number)
(L:XPNDRNums,bco16) (>K:XPNDR_SET)

Walter

 

[kalong]

Thanks for your reply.

I have tried higher and lower 2-digits-set variables are controlled separately , however , those variables are still in decimals (0-9 each).
How can I combine higher and lower sets , and , convert to octal numbers (0-7).

many thanks

use loop for increment and decrement. by unit, tens, hundreds, thousands...so on.
decimal can be tricked by multiply (you need a copy for display purpose).
just give an idea. I have done this so many times in C++ code.

 

[spokes2112]

This works.
By knowing when to "carry over" you can use the stock commands. No need for exotic math nor the need to monitor/convert the current XPNDR code.
The if's{} in the following code is the carry over, following that is the always present inc/dec of the lowest digit of the 1/2 XPNDR code.

<Macro Name="ExtDigit">
    @1 sp0
    @3 0 >
    if{ l0 10 @3 pow * sp0 }
    l0 int 10 @2 pow % 10 @2 1 - 0 max pow / int
</Macro>

<!-- TEST DISPLAY -->
<String>XPNDR = %((A:TRANSPONDER1 CODE, number))%!04d!%</String>

<!-- INCREASE THE LOWER HALF OF THE XPNDR CODE -->
<Click Repeat="Yes">@ExtDigit((A:TRANSPONDER1 CODE, number),1,0) 7 == if{ (>K:XPNDR_10_INC) } (>K:XPNDR_1_INC)</Click>

<!-- DECREASE THE LOWER HALF OF THE XPNDR CODE -->
<Click Repeat="Yes">@ExtDigit((A:TRANSPONDER1 CODE, number),1,0) 0 == if{ (>K:XPNDR_10_DEC) } (>K:XPNDR_1_DEC)</Click>

<!-- INCREASE THE UPPER HALF OF THE XPNDR CODE -->
<Click Repeat="Yes">@ExtDigit((A:TRANSPONDER1 CODE, number),3,0) 7 == if{ (>K:XPNDR_1000_INC) } (>K:XPNDR_100_INC)</Click>

<!-- DECREASE THE UPPER HALF OF THE XPNDR CODE -->
<Click Repeat="Yes">@ExtDigit((A:TRANSPONDER1 CODE, number),3,0) 0 == if{ (>K:XPNDR_1000_DEC) } (>K:XPNDR_100_DEC)</Click>

 

[EPSTS]

Thank you all !

I'ii try them tonight , and thanks again .

 

[EPSTS]

My task has finally been completed .
It worked perfectly !

Thank you