From f134a1df3495cca4523eb6b53ab6f2ead715b705 Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Thu, 9 Nov 2023 14:56:36 +1100
Subject: [PATCH] AP_HAL_SITL: add simulator Hirth EFI

---
 libraries/AP_HAL_SITL/SITL_State_common.cpp | 9 +++++++++
 libraries/AP_HAL_SITL/SITL_State_common.h   | 4 ++++
 2 files changed, 13 insertions(+)

diff --git a/libraries/AP_HAL_SITL/SITL_State_common.cpp b/libraries/AP_HAL_SITL/SITL_State_common.cpp
index 10b2103fb0..260a9b28da 100644
--- a/libraries/AP_HAL_SITL/SITL_State_common.cpp
+++ b/libraries/AP_HAL_SITL/SITL_State_common.cpp
@@ -251,6 +251,12 @@ SITL::SerialDevice *SITL_State_Common::create_serial_sim(const char *name, const
         }
         efi_ms = new SITL::EFI_MegaSquirt();
         return efi_ms;
+    } else if (streq(name, "hirth")) {
+        if (efi_hirth != nullptr) {
+            AP_HAL::panic("Only one hirth at a time");
+        }
+        efi_hirth = new SITL::EFI_Hirth();
+        return efi_hirth;
     } else if (streq(name, "VectorNav")) {
         if (vectornav != nullptr) {
             AP_HAL::panic("Only one VectorNav at a time");
@@ -372,6 +378,9 @@ void SITL_State_Common::sim_update(void)
     if (efi_ms != nullptr) {
         efi_ms->update();
     }
+    if (efi_hirth != nullptr) {
+        efi_hirth->update();
+    }
 
     if (frsky_d != nullptr) {
         frsky_d->update();
diff --git a/libraries/AP_HAL_SITL/SITL_State_common.h b/libraries/AP_HAL_SITL/SITL_State_common.h
index bed95fd9ce..e7b82c2c91 100644
--- a/libraries/AP_HAL_SITL/SITL_State_common.h
+++ b/libraries/AP_HAL_SITL/SITL_State_common.h
@@ -11,6 +11,7 @@
 #include <SITL/SIM_Gimbal.h>
 #include <SITL/SIM_ADSB.h>
 #include <SITL/SIM_ADSB_Sagetech_MXS.h>
+#include <SITL/SIM_EFI_Hirth.h>
 #include <SITL/SIM_Vicon.h>
 #include <SITL/SIM_RF_Benewake_TF02.h>
 #include <SITL/SIM_RF_Benewake_TF03.h>
@@ -212,6 +213,9 @@ public:
     // simulated EFI MegaSquirt device:
     SITL::EFI_MegaSquirt *efi_ms;
 
+    // simulated EFI MegaSquirt device:
+    SITL::EFI_Hirth *efi_hirth;
+
     // output socket for flightgear viewing
     SocketAPM fg_socket{true};