HG_REPOSITORIES/LPP/INSTRUMENTATION/lppinstru Files · lppinstru/usbtmc.py

analog discovery:...

analog discovery: added analog out status getter added wait, runDuration and symetry on analog_out method

Alexis Jeandet - - Load All Authors

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             usbtmc.py
        
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      #!/usr/bin/env python

      #-*- coding: utf-8 -*-

      """Simple python library to communicate over USB-TMC protocol with linux's

          usbtmc module.

      """

      import time

      import sys

      import os

      import glob

      import re

      __author__ = "Alexis Jeandet"

      __copyright__ = "Copyright 2015, Laboratory of Plasma Physics"

      __credits__ = []

      __license__ = "GPLv2"

      __version__ = "1.0.0"

      __maintainer__ = "Alexis Jeandet"

      __email__ = "alexis.jeandet@member.fsf.org"

      __status__ = "Development"

      def find_instrument(ref,serial=""):

          instruments=glob.glob("/dev/usbtmc[0-9]")

          p = re.compile(ref)

          for instrument in instruments:

              dev=UsbTmc(instrument)

              idn=dev.idn().split(",")

              if p.match(idn[1]):

                  if serial=="" or serial == idn[2]:

                      return instrument

          return ""

      class UsbTmc(object):

          def __init__(self,dev):

              self.__PATH__=dev

              self.__FILE__ = os.open(dev, os.O_RDWR)

              if self.__FILE__==-1:

                  raise UserWarning("can't open "+dev)

              self.Manufacturer=""

              self.Reference=""

              self.Serial=""

              self.Version=""

          def write(self, command):

              os.write(self.__FILE__, command);

          def read(self, length = 4000):

              return os.read(self.__FILE__, length)

          def idn(self):

              self.write("*IDN?")

              return self.read(100)

          def __str__(self):

              return self.idn() +"\n"+ self.__PATH__

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				#!/usr/bin/env python
				#-- coding: utf-8 --
				"""Simple python library to communicate over USB-TMC protocol with linux's
				usbtmc module.
				"""
				import time
				import sys
				import os
				import glob
				import re

				__author__ = "Alexis Jeandet"
				__copyright__ = "Copyright 2015, Laboratory of Plasma Physics"
				__credits__ = []
				__license__ = "GPLv2"
				__version__ = "1.0.0"
				__maintainer__ = "Alexis Jeandet"
				__email__ = "alexis.jeandet@member.fsf.org"
				__status__ = "Development"


				def find_instrument(ref,serial=""):
				instruments=glob.glob("/dev/usbtmc[0-9]")
				p = re.compile(ref)
				for instrument in instruments:
				dev=UsbTmc(instrument)
				idn=dev.idn().split(",")
				if p.match(idn[1]):
				if serial=="" or serial == idn[2]:
				return instrument
				return ""

				class UsbTmc(object):
				def __init__(self,dev):
				self.__PATH__=dev
				self.__FILE__ = os.open(dev, os.O_RDWR)
				if self.__FILE__==-1:
				raise UserWarning("can't open "+dev)
				self.Manufacturer=""
				self.Reference=""
				self.Serial=""
				self.Version=""

				def write(self, command):
				os.write(self.__FILE__, command);

				def read(self, length = 4000):
				return os.read(self.__FILE__, length)

				def idn(self):
				self.write("*IDN?")
				return self.read(100)

				def __str__(self):
				return self.idn() +"\n"+ self.__PATH__