From 41b3974f3d696fa8152ea61c98f41ca8b2a56cd2 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Sat, 19 Sep 2015 15:05:36 +0200
Subject: improved reset-lufa-cdc helper

---
 tools/reset_lufa_cdc_nowait | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'tools/reset_lufa_cdc_nowait')

diff --git a/tools/reset_lufa_cdc_nowait b/tools/reset_lufa_cdc_nowait
index 47587ac..ac47368 100755
--- a/tools/reset_lufa_cdc_nowait
+++ b/tools/reset_lufa_cdc_nowait
@@ -1,6 +1,12 @@
 #!/bin/bash
 
-echo "resetting device .."
-echo $1 > /dev/ttyACM0
+DEVICE_FILE="/dev/ttyACM0"
+
+if [ -c $DEVICE_FILE ]; then
+    echo "resetting device .."
+    echo $1 > /dev/ttyACM0
+else
+    echo "'$DEVICE_FILE' not found ... device is probably already in bootloader mode - doing nothing"
+fi
 
 exit 0
-- 
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