From 1c19a228acbade54f2b5e200423249bb0d3ee3b7 Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Fri, 4 Dec 2020 11:14:00 +1100
Subject: [PATCH] Sub: nail GND_EXT_BUS down to bus 1 on Pixhawk1

---
 ArduSub/system.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ArduSub/system.cpp b/ArduSub/system.cpp
index 0554da13aa5..f2303d6b214 100644
--- a/ArduSub/system.cpp
+++ b/ArduSub/system.cpp
@@ -42,6 +42,9 @@ void Sub::init_ardupilot()
     case AP_BoardConfig::PX4_BOARD_PIXHAWK2:
         AP_Param::set_default_by_name("GND_EXT_BUS", 0);
         break;
+    case AP_BoardConfig::PX4_BOARD_PIXHAWK:
+        AP_Param::set_by_name("GND_EXT_BUS", 1);
+        break;
     default:
         AP_Param::set_default_by_name("GND_EXT_BUS", 1);
         break;