On Sun, 2007-08-05 at 19:26 -0600, Dave Perry wrote:
> Curt,
>
> You left a "FIXME" comment that the altitude should be for 29.92 inHg
> and rounded. The encoder reports mode-c-alt-ft, so this patch points
> the altitude node to this value and removes the redundant + 50 from the
> FL rounding routine.
>
> This requires a working encoder. Any AC using the encoder should have
>
> <instrumentation>
> ...
> <encoder>
> <serviceable type="bool">true</serviceable>
> </encoder>
> ...
> </instrumentation>
>
> in the "name"-set.xml file.
>
> Index: kt_70.cxx
> ===================================================================
> RCS file: /var/cvs/FlightGear-0.9/source/src/Instrumentation/kt_70.cxx,v
> retrieving revision 1.3
> diff -p -u -r1.3 kt_70.cxx
> --- kt_70.cxx 21 Feb 2006 01:19:03 -0000 1.3
> +++ kt_70.cxx 5 Aug 2007 23:55:59 -0000
> @@ -90,7 +90,8 @@ void FGKT_70::init ()
> // Inputs
> lon_node = fgGetNode("/position/longitude-deg", true);
> lat_node = fgGetNode("/position/latitude-deg", true);
> - alt_node = fgGetNode("/position/altitude-ft", true);
> + alt_node = fgGetNode("/instrumentation/encoder/mode-c-alt-ft",
> true);
> bus_power = fgGetNode("/systems/electrical/outputs/transponder",
> true);
> serviceable_node = (node->getChild("inputs", 0, true))
> ->getChild("serviceable", 0, true);
> @@ -205,12 +206,9 @@ void FGKT_70::update( double dt ) {
>
> id_code = digit1 * 1000 + digit2 * 100 + digit3 * 10 + digit4;
>
> - // flight level computation
> + // flight level computation uses encoder mode-c altitude
>
> - // FIXME!!!! This needs to be computed relative to 29.92 inHg,
> - // but for the moment, until I figure out how to do that, I'll
> - // just use true altitude.
> - flight_level = (int)( (alt_node->getDoubleValue() + 50.0) /
> 100.0);
> + flight_level = (int)( (alt_node->getDoubleValue() ) / 100.0);
>
> // ident button
> if ( ident_btn && !last_ident_btn ) {
>
And while you're looking at this, I sent a patch ages ago that may have
been lost. It makes the self-test mode of the kt70 function correctly.
Index: kt_70.cxx
===================================================================
RCS file: /var/cvs/FlightGear-0.9/source/src/Instrumentation/kt_70.cxx,v
retrieving revision 1.3
diff -w -r1.3 kt_70.cxx
234c234
< } else if ( func_knob == 2 ) {
---
> } else if ( func_knob == 2 ) { //selftest
240a241,242
> id_code = 8888;
> flight_level = 888;
-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems? Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >> http://get.splunk.com/
_______________________________________________
Flightgear-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/flightgear-devel
