Cleanup of Notebook Adapter emulator

Removed the CTS line watching. Just restart the software
manually for each new transfer :)

Line endings after each group of sync bytes and after each packet

timex_notebook_adapter.py

@@ -15,9 +15,6 @@ On reset the device can respond to 3 commands:
 In transmit mode, all bytes should be echoed back to the PC and the
 commands above should not be answered. Transmit mode is only left upon
 reset.
-
-The device is powered from the CTS control line, so this is pulled down
-at the beginning of transmission to make sure the device is reset.
 """
 
 
@@ -36,31 +33,20 @@ if len(sys.argv) == 4:
 
 # Used for rudimentary packet parsing
 pastSync = 0
-packetLeft = 0
+packetLeft = -1
 
-with serial.Serial(serialPort, 9600, timeout=0.1) as sp:
+with serial.Serial(serialPort, 9600) as sp:
 
 	# Used to control state of device
 	transmitState = False
 
 	def send(data):
-#		print("Sending: '{}'".format(data))
 		sp.write(data)
 
 	while True:
-		while True:
-			# CTS control line is used for powering device, and therefore also reset it
-			# Inactivated due to not available on all USB-Serial converters
-			if False and sp.cts == False:
-				if transmitState:
-					print("Leaving transmit state")
-					logfile.close()
-				transmitState = False
-			inb = sp.read(1)
-			if len(inb) != 0:
-				break
-
-		print("Received: {}".format(inb))
+		inb = sp.read(1)
+		if len(inb) == 0:
+			break
 
 		if not transmitState:
 			if inb == b"x":
@@ -81,21 +67,23 @@ with serial.Serial(serialPort, 9600, timeout=0.1) as sp:
 				print("Received unknown byte ({}) outside of transmit state".format(inb))
 
 		else:
-			if inb != b'U':
+			if pastSync == 0 and inb != b'U':
 				pastSync = 1
-			if pastSync and inb != b'\xAA':
-				if packetLeft == 0:
-					logfile.write("\n".encode())
+				logfile.write("\n".encode())
+
+			if pastSync == 1 and inb != b'\xAA':
 				pastSync = 2
+				packetLeft = 0
 
 			if pastSync == 2 and packetLeft == 0:
 				packetLeft = ord(inb)
+				logfile.write("\n".encode())
 
 			if logText:
 				logfile.write(("0x{:02x} ".format(ord(inb))).encode())
-				if pastSync==2:
-					if packetLeft > 0:
-						packetLeft -= 1
+				if packetLeft > 0:
+					packetLeft -= 1
 			else:
 				logfile.write(inb)
+
 			send(inb)