Add update function to PedalsJoystick

Matching the layout of the ShiftJoystick example, this only sends the Joystick USB packet if the pedals have actually changed position. This should avoid issues with the pedals "spamming" inputs and stealing a game's input priority even when they're constantly 0.

Author: dmadison

examples/Pedals/PedalsJoystick/PedalsJoystick.ino

@@ -66,6 +66,12 @@ void setup() {
 void loop() {
 	pedals.update();
 
+	if (pedals.positionChanged()) {
+		updatePedals();
+	}
+}
+
+void updatePedals() {
 	if (pedals.hasPedal(SimRacing::Gas)) {
 		int gasPedal = pedals.getPosition(SimRacing::Gas, 0, ADC_Max);
 		Joystick.setRyAxis(gasPedal);