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222 | #!/usr/bin/env python
##############################################################################
##
## Copyright (C) 2021 Narda Safety Test Solutions GmbH.
## Contact: http://www.narda-sts.de
##
## Redistribution and use in source and binary forms,
## with or without modification, are permitted provided that the following
## conditions are met:
##
## 1.) Redistributions of source code must retain the above copyright notice,
## this list of conditions and the following disclaimer.
##
## 2.) Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in the
## documentation and/or other materials provided with the distribution.
##
## 3.) Neither the name of the copyright holder nor the names of its
## contributors may be used to endorse or promote products derived from this
## software without specific prior written permission.
##
## 4.) EXPORT CONTROL
## The Software, including technical data /cryptographic software,
## may be subject to, German, European Union and U.S. export controls and
## may be subject to import or export controls in other countries.
## The Licensee agrees to strictly comply with all applicable import and
## export regulations. He specifically agrees, that he must not disclose or
## otherwise export or re-export the Licensed Software or any part thereof
## delivered under this end user license agreement (EULA) to any country
## (including a national or resident of such country) without a valid export
## or import license. Please be aware that the Software may contain
## US-Content, therefor the Licensee represent and warrant that he is not a
## citizen of, or otherwise located within, an embargoed nation (including
## without limitation Iran, Syria, Sudan, Cuba, North Korea) and that he is
## not otherwise prohibited under the Export Laws from receiving the Software.
## All rights to Use the Software are granted on condition that such rights
## are forfeited if the Licensee fails to comply with
## the terms of this Agreement.
##
## 5.) SEVERABILITY
## Should any provision of this Agreement be or become invalid, ineffective
## or unenforceable, the remaining provisions of this Agreement shall be
## valid. The parties agree to replace the invalid, ineffective or
## unenforceable provision by a valid, effective and enforceable provision
## which best meets the commercial intention of the parties.
## The same shall apply in case of omissions.
##
## 6.) APPLICABLE LAW AND PLACE OF JURISTICATION
## This Agreement shall be constituted under the law of Germany.
## The United Nations Convention on the International Sale of Goods
## shall not apply to this Agreement. The Place of Jurisdiction for any
## dispute between the Parties shall be Tübingen (Germany).
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
## TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
## PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Narda Safety Test Solutions GmbH
## BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
## CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
## SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
## INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
## CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
## ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
## POSSIBILITY OF SUCH DAMAGE.
##
##############################################################################
from pathlib import Path
import wx
from nardascripting.base.usrscriptbase import *
from nardascripting.base.signalsharkdev import *
from nardascripting.base.measthread import MeasDlgThread
# Import the dialog event class
from .gui.mydialogs import MyMeasGUIDlg, MySettingsDlg
class MyMeasurement(UsrScriptBase):
"""User script class"""
def __init__(self, main_gui, dev=SignalSharkDev()):
"""Initialization. Please leave this line unchanged"""
super().__init__(main_gui, dev, __file__)
# Script settings.
# -------------------------------------------------------------------------------
# Please adapt the following lines of code according to your script.
self._tab_name = 'Examples'
self._scr_title = 'Examples03 - Maximum Value Measurement'
self._scr_description = 'Starts the measurement, displays value of each measurement in a dialog, ' \
'and outputs the maximum value. '
# self._icon_path = self.script_path.joinpath('NardaScriptLauncher_example01.png')
self._list_prio = 3
self._nsl_executed_behavior = NSL_Executed_Behaviors.SHOW_NSL
# Add class variables if needed
# -------------------------------------------------------------------------------
# self.my_variable = None
def _run_script(self, args):
""" Script main function
This method is called when a user clicks on the corresponding script button.
Use the dialog classes only in this part of the code.
"""
# Optional: Prepare some parameters for the measurement.
measurement_steps = 10
# Instantiate dialog event class.
# -------------------------------------------------------------------------------
meas_dlg = MyMeasGUIDlg(self.main_gui, 'Title')
# Create an additional measurement thread to keep the GUI alive.
# Please change 'MyUserScript._run_measurement' according to your class name.
# With 'args=[param1, parm2, paramn]' you can pass some optional parameters to the measurement thread.
mthread = MeasDlgThread(main_gui=self.main_gui, dlg=meas_dlg,
callback=MyMeasurement._run_measurement,
args=[self.signalshark.addr, measurement_steps])
# Start the measurement thread and show a visualization (progress) dialog.
mthread.start_measurement()
# The lines of code below will be executed after the measurement thread has done it's job.
# ...
# Evaluate the result of the measurement thread (if any).
if mthread.result is not None:
self.MessageBoxModal('Max value: ' + str(mthread.result),
'Measurement Result', wx.OK | wx.ICON_INFORMATION)
@staticmethod
def _run_measurement(stopevent, update_progress, wait_for_stopevent,
signalshark_addr: str, measurement_steps: int):
""" Main method of the measurement thread that handles a time consuming measurement.
Please do NOT use any wxPython elements like a MessageBox or a Dialog here!
They are only permitted in the GUI thread ('_run_script' method).
Please use the 'update_progress' method to display information!
:param stopevent: Thread flag that indicates whether the procedure should be finished/cancelled
:param update_progress: Delegate method to update a progress bar, message string and icon
:param wait_for_stopevent: Delegate method to wait until stopevent is raised with possibility to show a message.
:param signalshark_addr: Custom parameter to handover the ip address of the SignalShark
:param measurement_steps: Custom parameter
:return: Optional custom parameter
"""
# Initialize return value (if any)
max_value = -999.0
# Setup connection to the SignalShark and display error message if connection fails.
signalshark = SignalSharkDev(signalshark_addr)
if not signalshark.connect():
return wait_for_stopevent(msg='Cannot connect to the device!', icon_style=wx.ICON_ERROR) # Returns None
# Clear SCPI error queue
signalshark.scpi.check_error()
try:
# Prepare progress value calculation. Progress is a value from 0.0 to 1.0
progress_step = 1.0 / measurement_steps
act_progress = 0.0
# Setup measurement:
# Check if desired task exists.
# If task does not exist, add one and do initialization stuff.
if signalshark.scpi.check_add_task(TaskTypes.RT_SPECTRUM, 'MyMeas'):
pass
# Check if desired view exists and add one if it does not.
exists, index = signalshark.scpi.check_add_view(ViewTypes.LEVEL)
if not exists:
# return wait_for_stopevent('Please setup the newly added Level Meter View.')
return wait_for_stopevent('Level Meter View was added to the task. '
'Please setup Level Meter View and restart the script.')
# Update the dialog message text and show a progress bar
update_progress(msg='Starting measurement', show_progress=True)
# Loop, that simulates a time consuming measurement
scan_number = -1
last_scan_number = -1
loop_cnt = 0
while loop_cnt < measurement_steps:
if stopevent.isSet():
return None
# Example measurement:
# Wait until Scan Number has increased.
scan_number = signalshark.scpi.levelmeter.get_data_update(last_scan_number)
if scan_number < 0:
return wait_for_stopevent('Cannot acquire measurement data!', icon_style=wx.ICON_ERROR)
elif scan_number > last_scan_number:
last_scan_number = scan_number
else:
stopevent.wait(0.5)
continue
# Update maximum value if determined level meter value is greater.
det_val, det_minmax = signalshark.scpi.levelmeter.get_data_detector(1)
if det_val > max_value:
max_value = det_val
# Update the progress bar.
act_progress += progress_step
update_progress(progress=act_progress, data=det_val)
loop_cnt += 1
# Allow the thread to synchronize the stop event.
stopevent.wait(0.5)
# Return some optional measurement result (number, string, list, dict, object ...)
return max_value
except Exception as e:
# Do some error handling
return wait_for_stopevent(str(e), icon_style=wx.ICON_ERROR) # Returns None
finally:
# Close connection.
signalshark.disconnect()
|