From 082c5021eea778c249bf05ce63c4f3df10432dcb Mon Sep 17 00:00:00 2001
From: Randy Mackay <rmackay9@yahoo.com>
Date: Mon, 3 Feb 2014 20:49:16 +0900
Subject: [PATCH] AC_AttControlHeli: add comments

---
 libraries/AC_AttitudeControl/AC_AttitudeControl_Heli.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libraries/AC_AttitudeControl/AC_AttitudeControl_Heli.cpp b/libraries/AC_AttitudeControl/AC_AttitudeControl_Heli.cpp
index b268cd1c5e..2e9d145659 100644
--- a/libraries/AC_AttitudeControl/AC_AttitudeControl_Heli.cpp
+++ b/libraries/AC_AttitudeControl/AC_AttitudeControl_Heli.cpp
@@ -159,6 +159,14 @@ void AC_AttitudeControl_Heli::rate_bf_to_motor_roll_pitch(float rate_roll_target
     motor_pitch = pitch_out;
 
 /*
+#if HELI_CC_COMP == ENABLED
+static LowPassFilterFloat rate_dynamics_filter;     // Rate Dynamics filter
+#endif
+
+#if HELI_CC_COMP == ENABLED
+    rate_dynamics_filter.set_cutoff_frequency(0.01f, 4.0f);
+#endif
+
 #if AC_ATTITUDE_HELI_CC_COMP == ENABLED
 // Do cross-coupling compensation for low rpm helis
 // Credit: Jolyon Saunders