Staged injection support; use two sets of injectors on the same engine #5247

firmware/controllers/algo/engine_state.h

@@ -32,6 +32,8 @@ public:
 	// Per-injection fuel mass, including TPS accel enrich
 	float injectionMass[MAX_CYLINDER_COUNT] = {0};
 
+	float injectionStage2Fraction = 0;
+
 	Timer crankingTimer;
 
 	WarningCodeState warnings;
@@ -76,6 +78,7 @@ public:
 	 * @see getInjectionDuration()
 	 */
 	floatms_t injectionDuration = 0;
+	floatms_t injectionDurationStage2 = 0;
 
 	angle_t injectionOffset = 0;
 

firmware/controllers/algo/fuel/injector_model.h

@@ -62,3 +62,7 @@ public:
 
 	using interface_t = IInjectorModel; // Mock interface
 };
+
+// TODO: differentiate primary vs. secondary injector configuration
+struct InjectorModelPrimary : public InjectorModel { };
+struct InjectorModelSecondary : public InjectorModel { };