New info message added to the firmware. The python script was modified to print out more detaild messages of its activity.

firmware/firmware.ino

@@ -47,6 +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);
+
+  Serial.println("SWR Meter firmware v0.1 by Kai Lauterbach (me@klaute.de)");
 }
 
 void loop()

tools/meas.py

@@ -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:
@@ -292,18 +292,37 @@ 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, 115200, timeout=0)
+    ser = serial.Serial(
+          port=d,\
+          baudrate=115200,\
+          parity=serial.PARITY_NONE,\
+          stopbits=serial.STOPBITS_ONE,\
+          bytesize=serial.EIGHTBITS,\
+          timeout=0)
   except:
     print "ERROR: Can't open the serial device " + device
     exit(1)
 
-  #time.sleep(2)
+  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)
 
 #####
 def closeSerialDevice():
 
   global ser
 
+  ser.flush()
+  ser.read(1000)
+
   ser.close()
 
 #####
@@ -345,6 +364,7 @@ if __name__ == "__main__":
     dataSend = dataSend + 1
 
   if args.start_freq != None:
+    print "Send: SET_START_FREQ"
     sendSerialData([CC_CMD_SET_START_FREQ,
                     (args.start_freq & 0xff000000) >> 24,
                     (args.start_freq & 0x00ff0000) >> 16,
@@ -353,6 +373,7 @@ if __name__ == "__main__":
     dataSend = dataSend + 1
 
   if args.end_freq != None:
+    print "Send: SET_END_FREQ"
     sendSerialData([CC_CMD_SET_END_FREQ,
                     (args.end_freq & 0xff000000) >> 24,
                     (args.end_freq & 0x00ff0000) >> 16,
@@ -361,6 +382,7 @@ if __name__ == "__main__":
     dataSend = dataSend + 1
 
   if args.step_freq != None:
+    print "Send: SET_FREQ_STEP"
     sendSerialData([CC_CMD_SET_FREQ_STEP,
                     (args.step_freq & 0xff000000) >> 24,
                     (args.step_freq & 0x00ff0000) >> 16,
@@ -369,17 +391,20 @@ if __name__ == "__main__":
     dataSend = dataSend + 1
 
   if args.intervall != None:
+    print "Send: SET_INTERVALL"
     sendSerialData([CC_CMD_SET_INTERVALL,
                     (args.intervall & 0x0000ff00) >>  8,
                     (args.intervall & 0x000000ff)])
     dataSend = dataSend + 1
 
   if args.drive_str != None:
+    print "Send: SET_DRIVE_STRENGTH"
     sendSerialData([CC_CMD_SET_DRIVE_STRENGTH,
                     args.drive_str])
     dataSend = dataSend + 1
 
   if args.start_meas == True:
+    print "Send: START_MEASUREMENT"
     sendSerialData([CC_CMD_START_MEASUREMENT])
     dataSend = dataSend + 1
 
@@ -387,7 +412,6 @@ if __name__ == "__main__":
   while dataSend > 0 and timeout < TIMEOUT_CNT_MAX:
 
     thread_lock.acquire()
-    #ser.write("9") # TODO
     tmp_messages = copy.deepcopy(cc_received_messages)
     thread_lock.release()
 

tools/test.py

@@ -1,6 +1,6 @@
 import serial, sys
 port = "/dev/ttyUSB0"
-baudrate = 57600
+baudrate = 115200
 ser = serial.Serial(port,baudrate,timeout=0.001)
 while True:
     ser.write(bytearray([0x3c, 0x3e, 0x10, 0x0d, 0x0a]))