Hydraulic and brake systems improvements:

- fix flightdeck brakes pressure indicator's bug;
- disable autobrake if antiskid is disabled or green pressure is low/missing;
- set hydraulic brakes snd accumulator's pressure;

to be done: set brake power according to brake's pressure

Models/FlightDeck/a320.flightdeck.xml

@@ -365,7 +365,7 @@
     	<type>rotate</type>
     	<object-name>brakes_lb_psi</object-name>
     	<property>systems/hydraulic/brakes/pressure-left-psi</property>
-    	<factor>0.03</factor>
+    	<factor>-0.03</factor>
 		<condition>
 			<equals>
 				<property>systems/hydraulic/brakes/mode</property>
@@ -381,7 +381,7 @@
     	<type>rotate</type>
     	<object-name>brakes_rb_psi</object-name>
     	<property>systems/hydraulic/brakes/pressure-right-psi</property>
-    	<factor>-0.03</factor>
+    	<factor>0.03</factor>
 		<condition>
 			<equals>
 				<property>systems/hydraulic/brakes/mode</property>
@@ -399,10 +399,16 @@
     	<property>systems/hydraulic/brakes/accumulator-pressure-psi</property>
     	<interpolation>
 			<entry><ind>0</ind><dep>0</dep></entry>
-			<entry><ind>700</ind><dep>66</dep></entry>
+			<entry><ind>700</ind><dep>-66</dep></entry>
-			<entry><ind>2000</ind><dep>78</dep></entry>
+			<entry><ind>2000</ind><dep>-78</dep></entry>
-			<entry><ind>3000</ind><dep>90</dep></entry>
+			<entry><ind>3000</ind><dep>-90</dep></entry>
 		</interpolation>
+		<condition>
+			<equals>
+				<property>systems/hydraulic/brakes/mode</property>
+				<value>2</value>
+			</equals>
+		</condition>
     	<axis>
 			<object-name>brakes_accum_psi.axis</object-name>
     	</axis>

Nasal/Systems/brakesystem.nas

@@ -406,7 +406,7 @@ var Autobrake = {
 		me._mode = me.mode.getValue();
 		me._active = me.active.getBoolValue();
 		if (me._gnd_speed > 72) {
-			if (me._mode != 0 and pts.Controls.Engines.Engine.throttle[0].getValue() < 0.15 and pts.Controls.Engines.Engine.throttle[1].getValue() < 0.15 and me._wow0) {
+			if (me._mode != 0 and pts.Controls.Engines.Engine.throttle[0].getValue() < 0.15 and pts.Controls.Engines.Engine.throttle[1].getValue() < 0.15 and me._wow0 and systems.HYD.Brakes.askidSw.getValue() and systems.HYD.Psi.green.getValue() >= 2500 ) {
 				me.active.setBoolValue(1);
 			} elsif (me._active) {
 				me.active.setBoolValue(0);

Nasal/Systems/hydraulics.nas

@@ -2,6 +2,8 @@
 # Jonathan Redpath
 
 # Copyright (c) 2019 Jonathan Redpath
+var lcont = 0;
+var rcont = 0;
 
 var HYD = {
 	Brakes: {
@@ -10,10 +12,11 @@ var HYD = {
 		rightPressPsi: props.globals.initNode("/systems/hydraulic/brakes/pressure-right-psi", 0, "INT"),
 		askidSw: props.globals.initNode("/systems/hydraulic/brakes/askidnwssw", 1, "BOOL"),
 		mode: props.globals.initNode("/systems/hydraulic/brakes/mode", 0, "INT"),
+		leftbrake: props.globals.getNode("/controls/gear/brake-left"),
+		rightbrake: props.globals.getNode("/controls/gear/brake-right"),
 		lbrake: props.globals.initNode("/systems/hydraulic/brakes/lbrake", 0, "INT"),
 		rbrake: props.globals.initNode("/systems/hydraulic/brakes/rbrake", 0, "INT"),
 		noserubber: props.globals.initNode("/systems/hydraulic/brakes/nose-rubber", 0, "INT"),
-		counter: props.globals.initNode("/systems/hydraulic/brakes/counter", 0, "INT"),
 	},
 	Fail: {
 		blueElec: props.globals.getNode("/systems/failures/hydraulic/blue-elec"),
@@ -85,11 +88,110 @@ var HYD = {
 		me.Fail.yellowLeak.setBoolValue(0);
 	},
 	loop: func() {
+		if (me.Brakes.leftbrake.getValue() == 1) {
+			me.Brakes.lbrake.setValue(1);
+		} else {
+			me.Brakes.lbrake.setValue(0);
+		}
+		if (me.Brakes.rightbrake.getValue() == 1) {
+			me.Brakes.rbrake.setValue(1);
+		} else {
+			me.Brakes.rbrake.setValue(0);
+		}
+		if (props.globals.getValue("/controls/gear/nws-switch") == 1) {
+			me.Brakes.askidSw.setBoolValue(1); #true
+		} else {
+			me.Brakes.askidSw.setBoolValue(0); #false
+		}
 		if (me.Brakes.mode.getValue() == 2) {
 			if (me.Psi.yellow.getValue() > 2500 and me.Brakes.accumPressPsi.getValue() < 700) {
 				me.Brakes.accumPressPsi.setValue(me.Brakes.accumPressPsi.getValue() + 50);
 			}
 		}
+
+		# Decrease accumPressPsi when green and yellow hydraulic's aren't pressurized
+		if (me.Brakes.leftbrake.getValue() > 0) {
+			lcont = lcont + 1;
+		} else {
+			lcont = 0;
+		}
+		if (me.Brakes.rightbrake.getValue() > 0) {
+			rcont = rcont + 1;
+		} else {
+			rcont = 0;
+		}
+		if ((me.Psi.green.getValue() == 0) and (me.Psi.yellow.getValue() == 0) and (me.Brakes.accumPressPsi.getValue()) > 0) {
+			if  (lcont == 1) {
+					#me.Brakes.accumPressPsi.setValue(me.Brakes.accumPressPsi.getValue() - (35 * me.Brakes.leftbrake.getValue()));
+					me.Brakes.accumPressPsi.setValue(me.Brakes.accumPressPsi.getValue() - 35);
+			}
+			if  (rcont == 1) {
+					#me.Brakes.accumPressPsi.setValue(me.Brakes.accumPressPsi.getValue() - (35 * me.Brakes.leftbrake.getValue()));
+					me.Brakes.accumPressPsi.setValue(me.Brakes.accumPressPsi.getValue() - 35);
+			}
+			if (me.Brakes.accumPressPsi.getValue() < 0) {
+				me.Brakes.accumPressPsi.setValue(0);
+			}
+		}
+
+		# Braking Pressure
+		if (me.Brakes.mode.getValue() == 1 or (me.Brakes.mode.getValue() == 2 and me.Psi.green.getValue() >= 2500)) {
+			# Normal braking - Green OK
+			if (me.Brakes.lbrake.getValue() > 0) {
+				me.Brakes.leftPressPsi.setValue(props.globals.getValue("/systems/hydraulic/green-psi-ptu"));
+			} else {
+				me.Brakes.leftPressPsi.setValue(0);
+			}
+			if (me.Brakes.rbrake.getValue() > 0) {
+				me.Brakes.rightPressPsi.setValue(props.globals.getValue("/systems/hydraulic/green-psi-ptu"));
+			} else {
+				me.Brakes.rightPressPsi.setValue(0);
+			}
+		} else {
+			if (me.Brakes.mode.getValue() == 2 and me.Psi.green.getValue() < 2500) {
+				# Alternate Braking (Yellow OK + Antiskid ON + electric OK) - missing condition: BSCU OK-KO
+				if (me.Psi.yellow.getValue() >= 2500 and me.Brakes.askidSw.getValue() and props.globals.getValue("/systems/electrical/serviceable")) {
+					if (me.Brakes.lbrake.getValue() > 0) {
+						me.Brakes.leftPressPsi.setValue(props.globals.getValue("/systems/hydraulic/yellow-psi-ptu"));
+					} else {
+						me.Brakes.leftPressPsi.setValue(0);
+					}
+					if (me.Brakes.rbrake.getValue() > 0) {
+						me.Brakes.rightPressPsi.setValue(props.globals.getValue("/systems/hydraulic/yellow-psi-ptu"));
+					} else {
+						me.Brakes.rightPressPsi.setValue(0);
+					}
+				} else {
+					# Alternate Braking (Yellow OK + Antiskid OFF + electric OK) - missing condition: BSCU OK-KO
+					if (me.Psi.yellow.getValue() >= 2500 and !me.Brakes.askidSw.getValue() and props.globals.getValue("/systems/electrical/serviceable")) {
+						if (me.Brakes.lbrake.getValue() > 0) {
+							me.Brakes.leftPressPsi.setValue(1000);
+						} else {
+							me.Brakes.leftPressPsi.setValue(0);
+						}
+						if (me.Brakes.rbrake.getValue() > 0) {
+							me.Brakes.rightPressPsi.setValue(1000);
+						}  else {
+							me.Brakes.rightPressPsi.setValue(0);
+						}
+					} else {
+						# Alternate Braking (Yellow KO or Antiskid KO or electric KO) - missing condition: BSCU OK-KO
+						if (me.Psi.yellow.getValue() < 2500 or !me.Brakes.askidSw.getValue() or !props.globals.getValue("/systems/electrical/serviceable")) {
+							if (me.Brakes.lbrake.getValue() > 0) {
+								me.Brakes.leftPressPsi.setValue(me.Brakes.accumPressPsi.getValue());
+							} else {
+								me.Brakes.leftPressPsi.setValue(0);
+							}
+							if (me.Brakes.rbrake.getValue() > 0) {
+								me.Brakes.rightPressPsi.setValue(me.Brakes.accumPressPsi.getValue());
+							}  else {
+								me.Brakes.rightPressPsi.setValue(0);
+							}
+						}
+					}
+				} 
+			}
+		}
 	},
 };
 

Systems/libraries.xml

@@ -740,46 +740,6 @@
 		<output>/controls/flight/auto-coordination</output>
 	</filter>
 	
-	<!-- Braking -->
-	
-	<filter>
-		<name>Left Press</name>
-		<type>gain</type>
-		<gain>1.0</gain>
-		<update-interval-secs type="double">0.05</update-interval-secs>
-		<input>
-			<expression>
-				<table>
-					<property>/controls/gear/brake-left</property>
-					<entry><ind>0.0</ind><dep>   0</dep></entry>
-					<entry><ind>0.3</ind><dep>1000</dep></entry>
-					<entry><ind>0.6</ind><dep>2000</dep></entry>
-					<entry><ind>1.0</ind><dep>3000</dep></entry>
-				</table>
-			</expression>
-		</input>
-		<output>/systems/hydraulic/brakes/pressure-left-psi</output>
-	</filter>
-	
-	<filter>
-		<name>Right Press</name>
-		<type>gain</type>
-		<gain>1.0</gain>
-		<update-interval-secs type="double">0.05</update-interval-secs>
-		<input>
-			<expression>
-				<table>
-					<property>/controls/gear/brake-right</property>
-					<entry><ind>0.0</ind><dep>   0</dep></entry>
-					<entry><ind>0.3</ind><dep>1000</dep></entry>
-					<entry><ind>0.6</ind><dep>2000</dep></entry>
-					<entry><ind>1.0</ind><dep>3000</dep></entry>
-				</table>
-			</expression>
-		</input>
-		<output>/systems/hydraulic/brakes/pressure-right-psi</output>
-	</filter>
-	
 	<filter>
 		<name>Left Door</name>
 		<type>gain</type>