diff --git a/firmware/firmware.ino b/firmware/firmware.ino
index ef7d7d8..a087c7d 100644
--- a/firmware/firmware.ino
+++ b/firmware/firmware.ino
@@ -47,9 +47,9 @@ void setup()
   si5351.output_enable(SI5351_CLK0, 1); // enable clock output 0
   si5351.drive_strength(SI5351_CLK0, SI5351_DRIVE_2MA); // 2 4 6 8ma
   */
-  delay(500);
+  //delay(500);
 
-  Serial.println("SWR Meter firmware v0.1 by Kai Lauterbach (me@klaute.de)");
+  //Serial.println("SWR Meter firmware v0.1 by Kai Lauterbach (me@klaute.de)");
 }
 
 void loop()
diff --git a/tools/meas.py b/tools/meas.py
index 1ce599d..84c6564 100644
--- a/tools/meas.py
+++ b/tools/meas.py
@@ -29,7 +29,7 @@ parser.add_argument("-o", "--output_file", type=str, help="")
 # show graphical results
 parser.add_argument("-g", "--show_graph", default=False, help="", action='store_true')
 # get config
-parser.add_argument("-c", "--get_config", default=False, help="", action='store_true')
+#parser.add_argument("-c", "--get_config", default=False, help="", action='store_true')
 
 ###############################################################################
 
@@ -60,7 +60,7 @@ CC_CMD_GET_CONFIG         = 0x10
 
 ###############################################################################
 
-TIMEOUT_CNT_MAX     = 50
+TIMEOUT_CNT_MAX     = 150
 MAIN_LOOP_DELAY_S   = 0.05
 THREAD_LOOP_DELAY_S = 0.01
 
@@ -157,7 +157,7 @@ def cc_dataReceiverThread():
       #print bytesToRead # TODO
       incoming = list(ser.read(64))
 
-      print incoming # TODO
+      #print incoming # TODO
 
       # 2. process the received data
       for c in incoming:
@@ -292,28 +292,31 @@ def openSerialDevice(d):
 
   # Why 115200? Because the host defines the baudrate for the USB serial connection.
   try:
-    #ser = serial.Serial(d, 115200, timeout=0)
+    ser = serial.Serial(d)
+  except:
+    print "ERROR: Can't open the serial device " + device
+    exit(1)
+
+  # Toggle DTR to reset Arduino
+  ser.setDTR(False)
+  time.sleep(1)
+  # toss any data already received, see
+  # http://pyserial.sourceforge.net/pyserial_api.html#serial.Serial.flushInput
+  ser.flushInput()
+  ser.setDTR(True)
+
+  try:
     ser = serial.Serial(
           port=d,\
           baudrate=115200,\
           parity=serial.PARITY_NONE,\
           stopbits=serial.STOPBITS_ONE,\
           bytesize=serial.EIGHTBITS,\
+          rtscts=0,\
           timeout=0)
   except:
     print "ERROR: Can't open the serial device " + device
-    exit(1)
-
-  time.sleep(2)
-
-  #ser.write(bytearray([0x00]))
-  #ser.write(bytearray([0x00]))
-  #ser.write(bytearray([0x00]))
-  #ser.write(bytearray([0x00]))
-  #ser.write(bytearray([0x00]))
-
-  ser.flush()
-  ser.read(1000)
+    exit(2)
 
 #####
 def closeSerialDevice():
@@ -340,6 +343,12 @@ def sendSerialData(data):
 
 if __name__ == "__main__":
 
+  start_freq = 0
+  end_freq   = 0
+  step_freq  = 0
+
+  config_read = False
+
   cc_init()
 
   # parse the commandline arguments
@@ -357,11 +366,13 @@ if __name__ == "__main__":
   # 2. start thread to poll cc_dataReceiverThread()
   cc_startReceiverThread()
 
+  time.sleep(1.5)
+
   # 3. get and process the commandline arguments/parameter
-  if args.get_config == True:
-    print "Send: GET_CONFIG"
-    sendSerialData([CC_CMD_GET_CONFIG])
-    dataSend = dataSend + 1
+  #if args.get_config == True and args.start_meas == False:
+  #  print "Send: GET_CONFIG"
+  #  sendSerialData([CC_CMD_GET_CONFIG])
+  #  dataSend = dataSend + 1
 
   if args.start_freq != None:
     print "Send: SET_START_FREQ"
@@ -436,6 +447,9 @@ if __name__ == "__main__":
           a0   += e[3][5]
           a1    = e[3][6] << 8
           a1   += e[3][7]
+          print "freq: " + str(freq)
+          print "a0: " + str(a0)
+          print "a1: " + str(a1)
 
         elif e[1] == MSG_TYPE_CONFIG:
           print "recv: CONFIG"
@@ -454,12 +468,17 @@ if __name__ == "__main__":
           intervall  = e[3][12] << 8
           intervall += e[3][13]
           drive_str = e[3][14]
+
           print "start_freq = " + str(start_freq)
           print "end_freq   = " + str(end_freq)
           print "step_freq  = " + str(step_freq)
           print "intervall  = " + str(intervall)
           print "drive_str  = " + str(drive_str)
 
+          if args.start_meas == True and config_read == False:
+            dataSend = dataSend + 1 + ((end_freq - start_freq) / step_freq)
+            config_read = True
+
         elif e[1] == MSG_TYPE_MEAS_END_INFO:
           print "recv: END INFO"