1 files changed, 14 insertions, 9 deletions
diff --git a/reset.py b/reset.py
index 1a4d515..020d8cb 100755
--- a/reset.py
+++ b/reset.py
@@ -3,16 +3,21 @@
 import serial
 import time
 
-ser = serial.Serial('/dev/ttyACM0', baudrate=115200)
-ser.open()
 
-# pull dtr and rts low
-ser.setRTS(0)
-ser.setDTR(0)
+try:
+    ser = serial.Serial('/dev/ttyACM0', baudrate=115200)
+    ser.open()
 
-# toggle DTR
-ser.setDTR(1)
+    # pull dtr and rts low
+    ser.setRTS(0)
+    ser.setDTR(0)
 
-# close
-ser.close()
+    # toggle DTR
+    ser.setDTR(1)
+
+    # close
+    ser.close()
+
+except:
+    print "Failed to open the serial port for reset, perhaps this is your first upload or the board was already in bootloader mode"