From f9802204df6b85a85e97d05e9c7cbdc9705b29b8 Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Thu, 28 Jul 2016 16:37:23 +1000
Subject: [PATCH] Copter: inform dataflash of vehicle arm state

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

diff --git a/ArduCopter/motors.cpp b/ArduCopter/motors.cpp
index 05b75c1096..5025c3bcb8 100644
--- a/ArduCopter/motors.cpp
+++ b/ArduCopter/motors.cpp
@@ -137,6 +137,9 @@ bool Copter::init_arm_motors(bool arming_from_gcs)
         return false;
     }
 
+    // let dataflash know that we're armed (it may open logs e.g.)
+    DataFlash_Class::instance()->set_vehicle_armed(true);
+
     // disable cpu failsafe because initialising everything takes a while
     failsafe_disable();
 
@@ -254,6 +257,7 @@ void Copter::init_disarm_motors()
     if (!DataFlash.log_while_disarmed()) {
         DataFlash.EnableWrites(false);
     }
+    DataFlash_Class::instance()->set_vehicle_armed(false);
 
     // disable gps velocity based centrefugal force compensation
     ahrs.set_correct_centrifugal(false);