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# -*- coding: utf-8 -*-
""" Requires FlexDCA running on a PC or instrument. Edit the ADDRESS constant
if not running on a PC. Python and the VISA library must have the same
"bitness": 32 or 64-bit. Both 32 and 64-bit versions the VISA library are
installed by Keysight Connection Expert. PyVISA is the frontend for the
VISA library.
This script prints the installed Python and VISA versions and
checks the VISA environment and opens a connection with
FlexDCA that is running on a PC. """

import sys
import pyvisa as visa  # PyVISA library

ADDRESS = 'TCPIP0::localhost::hislip0,4880::INSTR'

rm = visa.ResourceManager(r'C:\WINDOWS\system32\visa64.dll')
print('\nVISA library version:\n  ', rm)
print('\nPython version:\n  ', sys.version)
print('\nList of instruments discovered by Keysight Connection Expert:')
i = 1
for key, value in rm.list_resources_info().items():
    print('\nInstrument ', str(i), ': ', key)
    print('  Interface type: ', value.interface_type)
    print('  Interface board number: ', value.interface_board_number)
    print('  Resource class: ', value.resource_class)
    print('  Resource name: ', value.resource_name)
    print('  Resource alias: ', value.alias)
    i += 1
FlexDCA = rm.open_resource(ADDRESS)
FlexDCA.timeout = 10000  # 10s
FlexDCA.write_termination = '\n'
FlexDCA.read_termination = '\n'
print('\nVISA termination string (write) set to newline: ASCII ',
      ord(FlexDCA.write_termination))
print('VISA termination string (read) set to newline: ASCII ',
      ord(FlexDCA.read_termination))
print('FlexDCA ID string:\n  ', FlexDCA.query('*IDN?'), flush=True)
FlexDCA.query('*RST;*OPC?')
FlexDCA.write(':SYSTem:GTLocal')
FlexDCA.close()