From a37df08277016e2ea44c60acac894b6f06d0d96c Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Thu, 9 Jan 2020 21:27:12 +1100
Subject: [PATCH] Sub: correct unused expression compilation failure

---
 ArduSub/control_motordetect.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ArduSub/control_motordetect.cpp b/ArduSub/control_motordetect.cpp
index 177380e6b0..348dba9868 100644
--- a/ArduSub/control_motordetect.cpp
+++ b/ArduSub/control_motordetect.cpp
@@ -82,7 +82,7 @@ void Sub::motordetect_run()
         // Force all motors to stop
         for (uint8_t i=0; i <AP_MOTORS_MAX_NUM_MOTORS; i++) {
             if (motors.motor_is_enabled(i)) {
-                !motors.output_test_num(i, 1500);
+                motors.output_test_num(i, 1500);
             }
         }
         // wait until gyro product is under a certain(experimental) threshold