From a2292fdae3972653ee4cf023b32e070b2196bda3 Mon Sep 17 00:00:00 2001
From: Stefan Schake <schake@embedded.rwth-aachen.de>
Date: Tue, 26 Sep 2017 02:02:45 +0200
Subject: [PATCH] Fail fast when we couldn't open an ANT stick

---
 src/ANT/ANT.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/ANT/ANT.cpp b/src/ANT/ANT.cpp
index ba1dfc1ab..3b953929d 100644
--- a/src/ANT/ANT.cpp
+++ b/src/ANT/ANT.cpp
@@ -487,6 +487,12 @@ ANT::start()
 int
 ANT::setup()
 {
+    if (channels == 0)
+    {
+        // we obviously have not managed to open an ANT stick, fail fast
+        return 0;
+    }
+
     uint8_t attempts = 0;
     do
     {