From e1aaea083406917d09f82822989d179cc7204cdc Mon Sep 17 00:00:00 2001
From: Randy Mackay <rmackay9@yahoo.com>
Date: Tue, 8 Dec 2020 14:07:41 +0900
Subject: [PATCH] Copter: pre-arm check of FS_GCS_ENABLE=2

---
 ArduCopter/AP_Arming.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ArduCopter/AP_Arming.cpp b/ArduCopter/AP_Arming.cpp
index d61d0d24f7..31f970808e 100644
--- a/ArduCopter/AP_Arming.cpp
+++ b/ArduCopter/AP_Arming.cpp
@@ -159,6 +159,10 @@ bool AP_Arming_Copter::parameter_checks(bool display_failure)
                 return false;
             }
         }
+        if (copter.g.failsafe_gcs == FS_GCS_ENABLED_CONTINUE_MISSION) {
+            // FS_GCS_ENABLE == 2 has been removed
+            check_failed(ARMING_CHECK_PARAMETERS, display_failure, "FS_GCS_ENABLE=2 removed, see FS_OPTIONS");
+        }
 
         // lean angle parameter check
         if (copter.aparm.angle_max < 1000 || copter.aparm.angle_max > 8000) {