old_contents: import threading
  import logging
  import argparse
  
  import powerpod
  
  LOGGER = logging.getLogger(__name__)
  
  class NewtonSimulator(threading.Thread):
  	firmware_version = 6.12
  	serial_number = '-'.join(['00'] * 16)
  	def __init__(self, serial_connection=None):
  		super(NewtonSimulator, self).__init__()
  		if serial_connection is None:
  			serial_connection = powerpod.NewtonSerialConnection()
  		self.serial_connection = serial_connection
  		self.protocol = None
  		self.profiles = None
  		self.current_profile = 0
  		self.odometer_distance = 100.0
  		self.units_type = powerpod.SetUnitsCommand.METRIC
  		self.screens = [powerpod.NewtonProfileScreens.default() for _ in range(4)]
  		self.reload = False
  		self.init()
  
  	def do_reload(self):
  		self.reload = False
  		reload(powerpod)
  		self.init()
  
  	def init(self):
  		self.profiles = [powerpod.types.NewtonProfile.default() for _ in range(4)]
  		self.rides = [
  			powerpod.types.NewtonRide.make(
  				[powerpod.types.NewtonRideData(10, 0, 100, 100, 0, 0.0, 10.0, 620, 100, 200, x - 100 if x >= 100 and x < 200 else 0, 1, 5) for x in range(1000)]
  			)
  		]
  		self.protocol = powerpod.NewtonSerialProtocol(self.serial_connection)
  
  	def run(self):
  		last_identifier = 0x09 # skip first firmware
  		with self.serial_connection:
  			while True:
  				if self.reload:
  					self.do_reload()
  					break
  				message = self.protocol.read_message()
  				identifier = ord(message[0])
  				data = message[1:]
  				command = powerpod.NewtonCommand.MAP[identifier].parse(data)
  				if (identifier, last_identifier) in [(0x09, 0x0e), (0x0e, 0x09)]:
  					# Newton sends get firmware/get serial every second or so
  					# Log these as debug messages.
  					log = LOGGER.debug
  					last_identifier = identifier
  				else:
  					log = LOGGER.info
  				log("<- %r", command)
  				response = command.get_response(self)
  				log("-> %s", repr(response)[:200])
  				response_bin = None if response is None else response.to_binary()
  				self.protocol.write_message(response_bin)
  
  def arg_parser():
  	parser = argparse.ArgumentParser()
  	parser.add_argument('--port')
  	return parser
  
  def main():
  	logging.basicConfig(level=logging.INFO)
  	args = arg_parser().parse_args()
  	kwargs = {}
  	if args.port is not None:
  		kwargs['serial_connection'] = powerpod.NewtonSerialConnection(port=args.port)
  	sim = NewtonSimulator(**kwargs)
  	sim.run()
  
  if __name__ == '__main__':
  	main()
  
new_contents: import threading
  import logging
  import argparse
  
  import powerpod
  
  LOGGER = logging.getLogger(__name__)
  
  class NewtonSimulator(threading.Thread):
  	firmware_version = 6.12
  	def __init__(self, serial_number, serial_connection=None):
  		super(NewtonSimulator, self).__init__()
  		if serial_connection is None:
  			serial_connection = powerpod.NewtonSerialConnection()
  		self.serial_connection = serial_connection
  		self.serial_number = serial_number
  		self.protocol = None
  		self.profiles = None
  		self.current_profile = 0
  		self.odometer_distance = 100.0
  		self.units_type = powerpod.SetUnitsCommand.METRIC
  		self.screens = [powerpod.NewtonProfileScreens.default() for _ in range(4)]
  		self.reload = False
  		self.init()
  
  	def do_reload(self):
  		self.reload = False
  		reload(powerpod)
  		self.init()
  
  	def init(self):
  		self.profiles = [powerpod.types.NewtonProfile.default() for _ in range(4)]
  		self.rides = [
  			powerpod.types.NewtonRide.make(
  				[powerpod.types.NewtonRideData(10, 0, 100, 100, 0, 0.0, 10.0, 620, 100, 200, x - 100 if x >= 100 and x < 200 else 0, 1, 5) for x in range(1000)]
  			)
  		]
  		self.protocol = powerpod.NewtonSerialProtocol(self.serial_connection)
  
  	def run(self):
  		last_identifier = 0x09 # skip first firmware
  		with self.serial_connection:
  			while True:
  				if self.reload:
  					self.do_reload()
  					break
  				message = self.protocol.read_message()
  				identifier = ord(message[0])
  				data = message[1:]
  				command = powerpod.NewtonCommand.MAP[identifier].parse(data)
  				if (identifier, last_identifier) in [(0x09, 0x0e), (0x0e, 0x09)]:
  					# Newton sends get firmware/get serial every second or so
  					# Log these as debug messages.
  					log = LOGGER.debug
  					last_identifier = identifier
  				else:
  					log = LOGGER.info
  				log("<- %r", command)
  				response = command.get_response(self)
  				log("-> %s", repr(response)[:200])
  				response_bin = None if response is None else response.to_binary()
  				self.protocol.write_message(response_bin)
  
  def arg_parser():
  	parser = argparse.ArgumentParser()
  	parser.add_argument('--port')
  	parser.add_argument('--serial-number', default='-'.join(['00'] * 16))
  	return parser
  
  def main():
  	logging.basicConfig(level=logging.INFO)
  	args = arg_parser().parse_args()
  	kwargs = {}
  	if args.port is not None:
  		kwargs['serial_connection'] = powerpod.NewtonSerialConnection(port=args.port)
  	sim = NewtonSimulator(serial_number=args.serial_number, **kwargs)
  	sim.run()
  
  if __name__ == '__main__':
  	main()
  
subject: allow serial number override