Example #1
0
	def __init__(self, port = None, baudrate = 115200,
	             read_timeout = 1.0, write_timeout = 0.1):
		"""
		Provides a serial-port back-end for the protocol. Timeouts are in seconds.
		"""
		BackEnd.__init__(self)
		
		self.name = "Serial"
		
		# Start the emulator as a child-process
		self.serial = Serial(port,
		                     baudrate     = baudrate,
		                     timeout      = read_timeout,
		                     writeTimeout = write_timeout)
Example #2
0
	def __init__(self, args):
		"""
		Starts the emulator specified in args as a sub-process. Args should be a
		valid shell command string.
		"""
		BackEnd.__init__(self)
		
		self.name = "Emulator"
		
		# Start the emulator as a child-process
		self.emulator = Popen(args,
		                      bufsize = -1,   # Produce a fully-buffered set of pipes
		                      stdin   = PIPE, # Source stdin from the protocol
		                      stdout  = PIPE, # Supply stdout to the protocol
		                      stderr  = None, # Stderr should not be redirected
		                      shell   = True) # Execute in a shell