integrated sampling check in the memristor measurement

hp4155/memristor/help.py

@@ -24,8 +24,6 @@ import numpy as np
 from IPython.display import display, clear_output
 import pandas as pd
 from datetime import datetime
-import configparser
-from ipyfilechooser import FileChooser
 import ipywidgets as widgets
 import time
 import os
@@ -81,7 +79,7 @@ def sweep(start,stop,step,comp,integration,device):
     return V, I
 
 #sampling check
-def sampling_check(device):
+def sampling_check(voltage,device):
     
     device.measurement_mode('SAMP')
     
@@ -89,7 +87,7 @@ def sampling_check(device):
     device.smu_mode_meas(4,'COMM')
 
     #set voltage and compliance
-    device.constant_smu_sampling(2,1e-3)
+    device.constant_smu_sampling(2,voltage)
     device.constant_smu_comp(2,'MAX')
 
     device.sampling_mode('LIN')
@@ -196,11 +194,26 @@ def check_values(step,set_voltage,reset_voltage):
         tkinter.messagebox.showerror(message="Invalid parameter setting(step>voltage)")
 
     #now if the set-reset voltages have the same polarity show a warning
-    if set_voltage*reset_voltage>0:
+    elif set_voltage*reset_voltage>0:
         valid = tk.messagebox.askokcancel(message="Set-Reset voltages have the same polarity. Continue?")
 
+    else:
+        pass
+        
     root.destroy()
     return valid
         
 
+def information_box(information):
+    #open dialog and hide the main window
+    root = tk.Tk()
+    root.withdraw()
+    root.lift() #show window above all other applications
+
+    root.attributes("-topmost", True)#window stays above all other applications
+
+    #display meaagebox
+    tkinter.messagebox.showinfo(message=information)
+    root.destroy()
+    
     
\ No newline at end of file

hp4155/memristor/memristor.py

@@ -7,6 +7,7 @@ from keyboard import add_hotkey,remove_hotkey
 #additional variables
 first = True #first measurement
 file_path = None
+first_sampling = True #indicates first sampling for set and reset buttons because we cannot add two at each button
 
 # the three naming fields
 
@@ -162,6 +163,11 @@ def on_set_button_clicked(b):
         valid = check_values(step.value,Vset.value,Vreset.value)
 
         if valid == True:
+            if sampling.value == True and first_sampling == True: #do sampling set before set process(100mV)
+                R_mean = sampling_check(0.1,device)
+                print(f"Average Resistance(Sampling Check):{R_mean}Ohm")
+                first_sampling = False
+               
             #execute measurement,plot results and save them
             V12,I12 = sweep(0,Vset.value,step.value,CC_vset.value,integration_time.value,device)
             plot_sweep(V12,I12,'SET')
@@ -170,8 +176,13 @@ def on_set_button_clicked(b):
             title = f"SET Memristor:"+"\n\n"+f"Set Voltage={Vset}V"+"\n"+f"current compliance={CC_vset}A"+"\n"
             write_to_file(file_path,title,df)
 
-        else:
-            print("Please Try again!")
+            if sampling.value == True: #do sampling set after set process(10mV)
+                R_mean = sampling_check(0.01,device)
+                print(f"Average Resistance(Sampling Check):{R_mean}Ohm")
+                first_sampling = False
+        
+        #show messagebox
+        information_box("Measurement finished!")
 
         change_state(buttons)
         change_state(parameters)
@@ -195,6 +206,12 @@ def on_reset_button_clicked(b):
         valid = check_values(step.value,Vset.value,Vreset.value)
 
         if valid == True:
+            
+            if sampling.value == True and first_sampling == True: #do sampling set before reset process(10mV)
+                R_mean = sampling_check(0.01,device)
+                print(f"Average Resistance(Sampling Check):{R_mean}Ohm")
+                first_sampling = False
+            
             #execute measurement,plot results and save them
             V34,I34 = sweep(0,Vreset.value,step.value,CC_vreset.value,integration_time.value,device)
             plot_sweep(V34,I34,'RESET')
@@ -203,8 +220,13 @@ def on_reset_button_clicked(b):
             title =f"RESET Memristor:"+"\n\n"+f"Reset Voltage={Vreset}V"+"\n"+f"current compliance={CC_vreset}A"+"\n"
             write_to_file(file_path,title,df)
 
-        else:
-           print("Please Try again!")
+            if sampling.value == True: #do sampling set after reset process(100mV)
+                R_mean = sampling_check(0.1,device)
+                print(f"Average Resistance(Sampling Check):{R_mean}Ohm")
+                first_sampling = False
+        
+        #show messagebox
+        information_box("Measurement finished!")
 
         change_state(buttons)
         change_state(parameters)
@@ -255,12 +277,27 @@ def on_full_button_clicked(b):
                     nonlocal stop
                     stop = True
                         
+                #help list with the resistances
+                resistances = []
+                
                 add_hotkey("esc",break_loop)
                 #execute number of measurements
-                for i in range(number.value):
+                for i in range(number.value):#here it is easier to implement the sampling checks
+                    if sampling.value == True: #before set(100mv)
+                        R_mean = sampling_check(0.1,device)
+                        resistances.append(R_mean)
+                        
                     V12,I12 = sweep(0,Vset.value,step.value,CC_vset.value,integration_time.value,device) #set
+                    
+                    #after set/before set
+                    if sampling.value == True: #before set(10mv)
+                        R_mean = sampling_check(0.01,device)
+                        resistances.append(R_mean)
+                    
                     V34,I34 = sweep(0,Vreset.value,step.value,CC_vreset.value,integration_time.value,device) #reset
 
+                    #no reason to do check at the end because the next loop will do that
+
                     #butterfly curve
                     V=np.concatenate((V12,V34))
                     I=np.concatenate((I12,I34))
@@ -284,20 +321,29 @@ def on_full_button_clicked(b):
 
                     #check for loop termination
                     if stop == True:
-                        print("endurance stopped after esc!")
+                        information_box("Endurance stopped after esc!")
                         f.write("endurance stopped!\n\n")
                         break
                 else:
-                    print("endurance completed!")
+                    information_box("Endurance completed!")
                     f.write("endurance completed!\n\n")
                         
-
                 remove_hotkey('esc')
                 stop = False
-        else:
-            print('Please Try again!')
 
+                #plot resistances if sampling value == True or len(resistances) !=0
+                if len(resistances)!=0:
+                    indexes = np.arange(1,len(resistances)+1)
+                    resistances = np.array(resistances)
+                
+                    plt.figure().clear()
+                    fig, ax = plt.subplots()
                     
+                    fig.suptitle('Resistance')
+                    ax.set(xlabel='Index',ylabel='Resistance(Ohm)')
+                    ax.set_yscale('log')
+                    plt.scatter(indexes,resistances)
+                    plt.show()
                                   
 #link buttons with functions
 set.on_click(on_set_button_clicked)

hp4155/memristor/memristor_buttons.ipynb

@@ -9,7 +9,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "a46dd0031c054d3bb767255c7b03bc65",
+       "model_id": "abf9071e10964bb1b3a36f710c1ee2e3",
        "version_major": 2,
        "version_minor": 0
       },
@@ -30,7 +30,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "e6e7219bf2464d78934b27f8975276d0",
+       "model_id": "977d30c950bc4fb6a65f1d7fda02d3aa",
        "version_major": 2,
        "version_minor": 0
       },
@@ -51,7 +51,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "0f78337db38842f488bc30f76711f2c1",
+       "model_id": "39d46f522f0f4871828d0fa4388ba74a",
        "version_major": 2,
        "version_minor": 0
       },
@@ -65,7 +65,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "9aca61683d9e4ac9a550eca50a73aef1",
+       "model_id": "f0ce8f8078a0425da119bb011dd15e7c",
        "version_major": 2,
        "version_minor": 0
       },

hp4155/memristor/old/old_functions.py

-"""These are old help functions"""
+"""These are old help functions and their dependances"""
+
+from ipyfilechooser import FileChooser
+import configparser
+
 
 def decode_ini(process,ini_file):     
     #if fc.selected!=None: