Fix firmware uploading to Arduino/Genuino 101 // Resolve #695

platformio/builder/tools/pioupload.py

@@ -37,13 +37,15 @@ def FlushSerialBuffer(env, port):
 
 
 def TouchSerialPort(env, port, baudrate):
+    port = env.subst(port)
+    print "Forcing reset using %dbps open/close on port %s" % (baudrate, port)
     if system() != "Windows":
         try:
-            s = Serial(env.subst(port))
+            s = Serial(port)
             s.close()
         except:  # pylint: disable=W0702
             pass
-    s = Serial(port=env.subst(port), baudrate=baudrate)
+    s = Serial(port=port, baudrate=baudrate)
     s.setDTR(False)
     s.close()
     sleep(0.4)