From 4f54d9b75f3629c96dd3042f0708592644a0ffba Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Fri, 6 Mar 2020 10:50:52 +1100
Subject: [PATCH] AP_WindVane: convert to new get_rpm() API

---
 libraries/AP_WindVane/AP_WindVane_RPM.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libraries/AP_WindVane/AP_WindVane_RPM.cpp b/libraries/AP_WindVane/AP_WindVane_RPM.cpp
index 311d645dee..75c44ad036 100644
--- a/libraries/AP_WindVane/AP_WindVane_RPM.cpp
+++ b/libraries/AP_WindVane/AP_WindVane_RPM.cpp
@@ -25,8 +25,9 @@ void AP_WindVane_RPM::update_speed()
 {
     const AP_RPM* rpm = AP_RPM::get_singleton();
     if (rpm != nullptr) {
-        const float temp_speed = rpm->get_rpm(0);
-        if (!is_negative(temp_speed)) {
+        float temp_speed;
+        if (rpm->get_rpm(0, temp_speed) &&
+            !is_negative(temp_speed)) {
             speed_update_frontend(temp_speed);
         }
     }