From facbfaf31fe17655a602db1945fde91b5aeb2a8c Mon Sep 17 00:00:00 2001
From: Randy Mackay <rmackay9@yahoo.com>
Date: Sat, 2 May 2015 21:38:26 +0900
Subject: [PATCH] SerialManager: support for 4th mavlink channel

---
 libraries/AP_SerialManager/AP_SerialManager.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libraries/AP_SerialManager/AP_SerialManager.cpp b/libraries/AP_SerialManager/AP_SerialManager.cpp
index 3cb2875143..83f4fecf9e 100644
--- a/libraries/AP_SerialManager/AP_SerialManager.cpp
+++ b/libraries/AP_SerialManager/AP_SerialManager.cpp
@@ -228,6 +228,10 @@ bool AP_SerialManager::get_mavlink_channel(enum SerialProtocol protocol, uint8_t
             mav_chan = MAVLINK_COMM_2;
             return true;
         }
+        if (instance == 2) {
+            mav_chan = MAVLINK_COMM_3;
+            return true;
+        }
     }
 
     // report failure