59b9aeb271
Adds a sound frequency controller to glider-instrumentation-sdk.nas, used for the ilec-sc7. This allows: - Simpler <sound>.xml files to integrate the glider variometer. - More accurate frequency scaling (frequency scales exponentially with vertical speed, so that perceived changes in pitch are linear with vertical speed). - Fixes that the variometer sound would not drop at negative vertical speeds.
81 lines
2.6 KiB
Text
81 lines
2.6 KiB
Text
io.include("Aircraft/Generic/soaring-instrumentation-sdk.nas");
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# Initialize exported properties
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setprop("/instrumentation/ilec-sc7/volume", 0.8);
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setprop("/instrumentation/ilec-sc7/audio", 2);
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setprop("/instrumentation/ilec-sc7/mode", 1);
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setprop("/instrumentation/ilec-sc7/sensitivity", 3);
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setprop("/instrumentation/ilec-sc7/lcd-digits-abs", 0);
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setprop("/instrumentation/ilec-sc7/lcd-digits-sgn", 0);
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setprop("/instrumentation/ilec-sc7/te-reading-mps", 0);
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setprop("/instrumentation/variometer/te-reading-mps", 0);
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setprop("/instrumentation/ilec-sc7/sound-pitch", 1);
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# Helper function for updating lcd display
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var update_lcd_props = func(value) {
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setprop("/instrumentation/ilec-sc7/lcd-digits-abs", math.abs(value));
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setprop("/instrumentation/ilec-sc7/lcd-digits-sgn", (value < 0) ? 0 : 1);
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};
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# Instrument setup:
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# One TE probe feeds two vario needles and a 25s averager.
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# LCD digits are controlled by the.. um.. lcd_controller
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# that switches between battery level, temperature and averager
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# depending on mode switch posiion.
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# Why a second needle? A digital vario is usually installed together
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# with a mechanical one, so now we are at it, why not provide a bonus
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# TE reading for it and avoid loading an extra script?
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var probe = TotalEnergyProbe.new();
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var sc7_needle = Dampener.new(
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input: probe,
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dampening: 3,
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on_update: update_prop("/instrumentation/ilec-sc7/te-reading-mps"));
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var sc7_sound = SoundPitchController.new(
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input: sc7_needle,
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max_input: 5,
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on_update: update_prop("/instrumentation/ilec-sc7/sound-pitch"));
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var extra_needle = Dampener.new(
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input: probe,
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dampening: 2.7,
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on_update: update_prop("/instrumentation/variometer/te-reading-mps"));
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var averager = Averager.new(
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input: probe,
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buffer_size: 25);
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var battery_level = PropertyReader.new(
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property: "systems/electrical/volts",
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scale: 0.1);
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var temperature = PropertyReader.new(
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property: "environment/temperature-degc",
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scale: 0.1);
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var lcd_controller = InputSwitcher.new(
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inputs: [battery_level, averager, temperature],
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active_input: 1,
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on_update: update_lcd_props);
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# Subscribe property listeners for instrument switches
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setlistener("instrumentation/ilec-sc7/mode",
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func(n) { lcd_controller.select_input(n.getValue()) }, 0, 0);
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setlistener("instrumentation/ilec-sc7/sensitivity",
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func(n) { sc7_needle.dampening = n.getValue() }, 0, 0);
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# Wrap everything together into an instrument
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var fast_instruments = UpdateLoop.new(
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update_period: 0,
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components: [probe, sc7_needle, sc7_sound, extra_needle],
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enable: 1);
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var slow_instruments = UpdateLoop.new(
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update_period: 1,
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components: [battery_level, averager, temperature, lcd_controller],
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enable: 1);
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