From 398a0d89bf836ad348c212136ba6be57c2ea8a87 Mon Sep 17 00:00:00 2001
From: Randy Mackay <rmackay9@yahoo.com>
Date: Tue, 21 Nov 2017 11:34:12 +0900
Subject: [PATCH] AC_P: add const accessor

---
 libraries/AC_PID/AC_P.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libraries/AC_PID/AC_P.h b/libraries/AC_PID/AC_P.h
index c64f52741a..e173d296e9 100644
--- a/libraries/AC_PID/AC_P.h
+++ b/libraries/AC_PID/AC_P.h
@@ -56,6 +56,7 @@ public:
 
     // accessors
     AP_Float    &kP() { return _kp; }
+    const AP_Float &kP() const { return _kp; }
     void        kP(const float v) { _kp.set(v); }
 
     static const struct AP_Param::GroupInfo        var_info[];