Mehr Einstellmöglichkeiten der IMportierten Daten

Signal_Import_From_File/Signal_Import_by_File.ini

+# Instrument driver configuration file.
+
+[General settings]
+
+# The name is shown in all the configuration windows
+name: Signal_Import_by_File
+
+# The version string should be updated whenever changes are made to this config file
+version: 1.0
+
+# Name of folder containing the code defining a custom driver. Do not define this item
+# or leave it blank for any standard driver based on the built-in VISA interface.
+driver_path: Signal_Import_by_File
+
+# Define that the driver is a Signal Generator
+signal_generator: True
+
+# Define quantities in sections. This list is a selection of allowed keywords,
+# see the manual for a full list of options
+#   datatype:      The datatype should be one of DOUBLE, BOOLEAN, COMBO,
+#                  STRING, COMPLEX, VECTOR, VECTOR_COMPLEX, PATH or BUTTON.
+#   unit:          Quantity unit
+#   set_cmd:       Command used to send data to the instrument. Put <*> where the value should appear.
+#   get_cmd:       Command used to get the data from the instrument. Default is set_cmd?
+#   def_value:     Default value
+#   low_lim:       Lowest allowable value.  Defaults to -INF
+#   high_lim:      Highest allowable values.  Defaults to +INF
+#   combo_def_1:   First option in a pull-down combo box. Only used when datatype=COMBO
+#   combo_def_2:   Second option in a pull-down combo box. Only used when datatype=COMBO
+#   ...
+#   combo_def_n:   nth option in a pull-down combo box. Only used when datatype=COMBO
+#   state_quant:   Quantity that determines this control's visibility
+#   state_value_1: Value of "state_quant" for which the control is visible
+#   state_value_2: Value of "state_quant" for which the control is visible
+#   ...
+#   state_value_n: Value of "state_quant" for which the control is visible
+#   permission:    Sets read/writability, options are BOTH, READ, WRITE or NONE. Default is BOTH 
+#   group:         Name of the group where the control belongs.
+#   section:       Name of the section where the control belongs.
+
+[Datapath]
+datatype: PATH
+def_value: C:\Users\
+
+[Skip Header]
+datatype: DOUBLE
+def_value: 1
+
+[Skip Footer]
+datatype: DOUBLE
+def_value: 0
+
+[Delimiter]
+datatype: STRING
+def_value: ,
+
+[Add noise]
+datatype: BOOLEAN
+def_value: False
+
+[Scale Factor]
+datatype: DOUBLE
+def_value: 1
+
+[CutWaveform]
+datatype: BOOLEAN
+def_value: TRUE
+
+[Max Values]
+datatype: DOUBLE
+unit: V
+def_value:0.5
+low_lim = 0
+high_lim = 0.5
+state_quant: CutWaveform
+state_value_1: 1
+
+
+[Min Values]
+datatype: DOUBLE
+unit: V
+def_value: -0.5
+low_lim = -0.5
+high_lim = 0
+state_quant: CutWaveform
+state_value_1: 1
+
+
+[Noise amplitude]
+datatype: DOUBLE
+unit: V
+def_value: 0.1
+state_quant: Add noise
+state_value_1: True
+
+[Signal]
+datatype: VECTOR
+permission: READ
+x_name: Time
+x_unit: s

Signal_Import_From_File/Signal_Import_by_File.py

+# -*- coding: utf-8 -*-
+"""
+Created on Thu Aug 30 18:36:00 2018
+
+@author: tebbe
+"""
+
+import InstrumentDriver
+import numpy as np
+
+class Driver(InstrumentDriver.InstrumentWorker):
+    """ This class implements a simple signal generator driver"""
+    
+
+    def performOpen(self, options = {}):
+        """Perform the operation of opening the instrument connection"""
+        pass
+
+
+    def performClose(self, bError = False, options = {}):
+        """Perform the close instrument connection operation"""
+        pass
+
+
+    def performSetValue(self, quant, value, sweepRate = 0.0, options = {}):
+        """Perform the Set Value instrument operation. This function should
+        return the actual value set by the instrument"""
+        # just return the value
+        return value
+
+
+    def performGetValue(self, quant, options = {}):
+        """Perform the Get Value instrument operation"""
+        # proceed depending on quantity
+        if quant.name  ==  'Signal':
+
+            # if asking for signal, start with getting values of other controls
+            DATAPATH = self.getValue('Datapath')
+            skiph = int(self.getValue('Skip Header'))
+            skipf = int(self.getValue('Skip Footer'))
+            delim = self.getValue('Delimiter')
+            if not len(delim):
+                delim = ' '
+            scale = float(self.getValue('Scale Factor'))
+            max_signal = float(self.getValue('Max Values'))
+            min_signal = float(self.getValue('Min Values'))
+            self.log(max_signal)
+            self.log(min_signal)
+
+            data =  np.genfromtxt(DATAPATH, delimiter  =  delim, skip_header = skiph, skip_footer = skipf)
+            time = data[:,0]
+            signal = data[:,1] * scale
+            add_noise  =  self.getValue('Add noise')
+            if add_noise:
+                noise_amp  =  self.getValue('Noise amplitude') * scale
+                signal +=  noise_amp * np.random.randn(len(signal))
+
+            if int(self.getValue('CutWaveform')):
+                for i,j in enumerate(signal):
+                    self.log(signal[i])
+                    if signal[i] > max_signal:
+                        signal[i] = max_signal
+                    if signal[i] < min_signal:
+                        signal[i] = min_signal
+
+            # create trace object that contains timing info
+            self.log(signal, level = 30)
+            self.log(time, level = 30)
+            trace  =  quant.getTraceDict(signal,time)
+            # finally, return the trace object
+            return trace
+        else: 
+            # for other quantities, just return current value of control
+            return quant.getValue()
+           
+
+