from abstract_instrument import abstract_instrument
  import socket
  
  #==============================================================================
  
  ALL_VAL_TYPE = ['FREQ']
  ALL_CHANNELS = ['1']
  
  ADDRESS = "192.168.0.74"
  CONF_VAL_TYPE = ['CONF:FREQ']
  
  #==============================================================================
  
  class AG53230A(abstract_instrument):

  	def __init__(self, channels, vtypes, address):
  		self.address = address
  		self.port = 5025
  		self.channels = channels
  		self.vtypes = vtypes

  	def model(self):
  		#self.send("*IDN?")
  		#return self.read()
  		return "AG53230A"

  	def connect(self):
  		print('Connecting to device @%s:%s...' %(self.address, self.port))
  		self.sock = socket.socket(socket.AF_INET,
  							 socket.SOCK_STREAM,
  							 socket.IPPROTO_TCP)
  		self.sock.settimeout(10.0)	# Don't hang around forever
  		self.sock.connect((self.address, self.port))
  		self.send("SYST:BEEP")
  		print('  --> Ok')
  		print(self.model())
  		self.configure()

  	def configure(self):
  		self.send('*RST')
  		self.send('DISP:DIG:MASK:AUTO OFF')
  		self.send('INP1:IMP 50')
  		self.send('INP1:COUP AC')
  		self.send('SYST:TIM INF')
  		self.send('SENS:ROSC:SOUR EXT')
  		self.send('SENS:ROSC:EXT:FREQ 10E6')
  		for ch in self.channels:
  			self.send(CONF_VAL_TYPE[ALL_VAL_TYPE.index(self.vtypes[self.channels.index(ch)])])
  		self.send('SAMP:COUN 1E6')
  		self.send('SENS:FREQ:MODE CONT')
  		self.send('SENS:FREQ:GATE:SOUR TIME')
  		self.send('1')
  		self.send('TRIG:SOUR IMM')

  	def getValue(self):
  		mes = ''
  		for ch in self.channels:
  			self.send("DATA:REM?")
  			mesTemp = self.read()
  			mes = mes + '\t' + mesTemp
  		return mes

  	def read(self):
  		ans = ''
  		nb_data_list = []
  		nb_data = ''
  		try:
  			while ans != '
  ':
  				ans = self.sock.recv(1)
  				nb_data_list.append(ans) # Return the number of data
  			list_size = len(nb_data_list)
  			for j in range (0, list_size):
  				nb_data = nb_data+nb_data_list[j]
  			return nb_data
  		except socket.timeout:
  			print "Socket timeout error when reading."
  			raise

  	def disconnect(self):
  		self.send('*RST')
  		self.send("SYST:BEEP")
  		self.sock.close()

  	def send(self, command):
  		self.sock.send("%s
  "%command)