From 7d712f90bf0c85a5c87121c69c8b9a6f4a888b58 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Tue, 20 May 2014 21:27:42 +1000
Subject: [PATCH] APM_OBC: adjusted docs for FS_HB_PIN

thanks to Warren for the question
---
 libraries/APM_OBC/APM_OBC.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/APM_OBC/APM_OBC.cpp b/libraries/APM_OBC/APM_OBC.cpp
index 5e8610b75f..bf60b4a375 100644
--- a/libraries/APM_OBC/APM_OBC.cpp
+++ b/libraries/APM_OBC/APM_OBC.cpp
@@ -37,7 +37,7 @@ const AP_Param::GroupInfo APM_OBC::var_info[] PROGMEM = {
 
     // @Param: HB_PIN
     // @DisplayName: Heartbeat Pin
-    // @Description: This sets a digital output pin which is cycled at 10Hz when termination is not activated
+    // @Description: This sets a digital output pin which is cycled at 10Hz when termination is not activated. Note that if a FS_TERM_PIN is set then the heartbeat pin will continue to cycle at 10Hz when termination is activated, to allow the termination board to distinguish between autopilot crash and termination.
     // @User: Advanced
     AP_GROUPINFO("HB_PIN",      1, APM_OBC, _heartbeat_pin, -1),