AP_EFI: Add ECU density parameter for Currawong fuel flow calculations

libraries/AP_EFI/AP_EFI.cpp

@@ -17,10 +17,12 @@
 
 #if HAL_EFI_ENABLED
 
+#define HAL_EFI_CURRAWONG_ECU_ENABLED 1
 #include "AP_EFI_Serial_MS.h"
 #include "AP_EFI_Serial_Lutan.h"
 #include "AP_EFI_NWPMU.h"
 #include "AP_EFI_DroneCAN.h"
+#include "AP_EFI_Currawong_ECU.h"
 #include <AP_Logger/AP_Logger.h>
 
 #if HAL_MAX_CAN_PROTOCOL_DRIVERS
@@ -53,6 +55,14 @@ const AP_Param::GroupInfo AP_EFI::var_info[] = {
     // @User: Advanced
     AP_GROUPINFO("_COEF2", 3, AP_EFI, coef2, 0),
 
+    // @Param: ECU_DN
+    // @DisplayName: ECU Fuel Density
+    // @Description: Used to calculate fuel consumption
+    // @Units: kg/m/m/m
+    // @Range: 0 10000
+    // @User: Advanced
+    AP_GROUPINFO("_ECU_DN", 4, AP_EFI, ecu_dn, 0.),
+
     AP_GROUPEND
 };
 

libraries/AP_EFI/AP_EFI.h

@@ -98,6 +98,8 @@ protected:
     AP_Float coef1;
     AP_Float coef2;
 
+    AP_Float ecu_dn;
+
     EFI_State state;
 
 private:

libraries/AP_EFI/AP_EFI_Backend.cpp

@@ -47,4 +47,8 @@ HAL_Semaphore &AP_EFI_Backend::get_sem(void)
     return frontend.sem;
 }
 
+float AP_EFI_Backend::get_ecu_dn(void) const
+{
+    return frontend.ecu_dn;
+}
 #endif // HAL_EFI_ENABLED

libraries/AP_EFI/AP_EFI_Backend.h

@@ -41,6 +41,7 @@ protected:
     int8_t get_uavcan_node_id(void) const;
     float get_coef1(void) const;
     float get_coef2(void) const;
+    float get_ecu_dn(void) const;
 
     HAL_Semaphore &get_sem(void);