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Commit 635c3759 authored by Alexandros Asonitis's avatar Alexandros Asonitis
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bug fixes and more sampling checks in memristor

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hp4155/memristor/memristor.py
+ 61
− 30
View file @ 635c3759
......@@ -205,10 +205,16 @@ def on_set_button_clicked(b):
change_state(buttons)
change_state(parameters)
#lock the device
device.inst.lock_excl()
clear_output()
#check values
valid = check_values(step.value,Vset.value,Vreset.value)
#during first button press
if first == True:
if first == True and valid == True:
change_state(information)#disable all widgets that are relevant about the information of the sample
filename=f"{sample_series.value}_{field.value}_{DUT.value}.txt"
file = os.path.join(folder,filename)
......@@ -216,10 +222,6 @@ def on_set_button_clicked(b):
write_header(temp_file,sample_series,field,DUT)
first = False
#check values
valid = check_values(step.value,Vset.value,Vreset.value)
if valid == True:
if sampling.value == True: #do sampling set before set process(100mV)
R_mean_before = sampling_check(0.1,device)
......@@ -245,9 +247,13 @@ def on_set_button_clicked(b):
#upload results
temp_file,file,folder=upload_results(temp_file,file,folder)
#show messagebox
information_box("Measurement finished!")
#unlock device
device.inst.unlock()
change_state(buttons)
change_state(parameters)
......@@ -257,10 +263,16 @@ def on_reset_button_clicked(b):
change_state(buttons)
change_state(parameters)
#lock device
device.inst.lock_excl()
clear_output()
#check values
valid = check_values(step.value,Vset.value,Vreset.value)
#during first button press
if first == True:
if first == True and valid == True:
#disable checkboxes, text fields etc.
change_state(information)
filename=f"{sample_series.value}_{field.value}_{DUT.value}.txt"
......@@ -269,11 +281,7 @@ def on_reset_button_clicked(b):
write_header(temp_file,sample_series,field,DUT)
first = False #set first to false irrelvant if it is in the if statement or not
#check values
valid = check_values(step.value,Vset.value,Vreset.value)
if valid == True:
if sampling.value == True: #do sampling set before reset process(10mV)
R_mean_before = sampling_check(0.01,device)
print(f"Average Resistance(Sampling Check):{R_mean_before:e} Ohm")
......@@ -285,7 +293,6 @@ def on_reset_button_clicked(b):
df = create_data_frame(V34,I34)
print(df)
if sampling.value == True: #do sampling set after reset process(100mV)
R_mean_after = sampling_check(0.1,device)
print(f"Average Resistance(Sampling Check):{R_mean_after:e} Ohm")
......@@ -298,9 +305,13 @@ def on_reset_button_clicked(b):
#upload results
temp_file,file,folder=upload_results(temp_file,file,folder)
#show messagebox
information_box("Measurement finished!")
#unlock device
device.inst.unlock()
change_state(buttons)
change_state(parameters)
......@@ -310,10 +321,16 @@ def on_full_button_clicked(b):
change_state(buttons)
change_state(parameters)
# lock device
device.inst.lock_excl()
clear_output()
#check values
valid = check_values(step.value,Vset.value,Vreset.value)
#during first button press
if first == True:
if first == True and valid == True:
#disable checkboxes, text fields etc.
change_state(information)
filename=f"{sample_series.value}_{field.value}_{DUT.value}.txt"
......@@ -322,8 +339,7 @@ def on_full_button_clicked(b):
write_header(temp_file,sample_series,field,DUT)
first = False #set first to false irrelvant if it is in the if statement or not
#check values
valid = check_values(step.value,Vset.value,Vreset.value)
if valid == True:
with open(temp_file,'a') as f:
f.write(f"{number.value} full sweeps with parameters:")
......@@ -359,19 +375,25 @@ def on_full_button_clicked(b):
#execute number of measurements
for i in range(number.value):#here it is easier to implement the sampling checks
if sampling.value == True: #before set(100mv)
R_mean_before = sampling_check(0.1,device)
resistances.append(R_mean_before)
R_mean_init = sampling_check(0.1,device)
resistances.append(R_mean_init)
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_after = sampling_check(0.01,device)
resistances.append(R_mean_after)
R_mean_set = sampling_check(0.01,device)
resistances.append(R_mean_set)
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
#no reason to do check at the end because the next loop will do that(not anymore) more sampling checks
#after reset
if sampling.value == True:#-0.1V
R_mean_reset = sampling_check(-0.1,device)
resistances.append(R_mean_reset)
#butterfly curve
V=np.concatenate((V12,V34))
......@@ -382,7 +404,7 @@ def on_full_button_clicked(b):
f.write(f"{i+1} Iteration")
f.write("\n")
if sampling.value == True:
f.write(f"R(Ohm) Before(set)/After(set)"+"\n"+f"{R_mean_before} {R_mean_after}"+"\n")
f.write(f"R(Ohm) INIT/SET/RESET"+"\n"+f"{R_mean_init} {R_mean_set} {R_mean_reset}"+"\n")
f.write(df.to_string())
f.write("\n\n")
......@@ -423,11 +445,15 @@ def on_full_button_clicked(b):
ax.set_yscale('log')
plt.scatter(indexes,resistances)
plt.show()
print(len(resistances))
print(indexes)
#print(len(resistances))
#print(indexes)
#upload results
temp_file,file,folder=upload_results(temp_file,file,folder)
#unlock the device
device.inst.unlock()
change_state(buttons)
change_state(parameters)
......@@ -443,8 +469,8 @@ def on_new_sample_button_clicked(b):
first = True
#change_state(information) not anymore creating changing state but enabling the widgets
enable_widgets(information)
sample_series.value=''
field.value=''
#sample_series.value=''
#field.value=''
DUT.value=''
#enable again
......@@ -469,6 +495,9 @@ def on_retention_button_clicked(b):
with output:
change_state(buttons)
change_state(parameters)
device.inst.lock_excl()
clear_output()
#during first button press
......@@ -493,6 +522,8 @@ def on_retention_button_clicked(b):
#show messagebox
information_box("Measurement finished!")
device.inst.unlock()
change_state(buttons)
change_state(parameters)
......
hp4155/memristor/memristor_buttons.ipynb
+ 5
− 5
View file @ 635c3759
%% Cell type:code id:df99f5a2-80af-4892-8633-33177239e444 tags:
``` python
%run memristor.py
```
%% Output
%% Cell type:code id:a8266885-3aa9-4abf-9b02-575a783f3fab tags:
%% Cell type:code id:076a9132-edc2-4ae5-8a7f-c8a179473952 tags:
``` python
```
......
hp4155/memristor/sweep_pulse.ipynb
+ 19
− 1
View file @ 635c3759
%% Cell type:code id:d310162d-c528-49ef-babb-47f603fee08b tags:
``` python
import sys
sys.path.insert(0, '..') #append parent directory
import matplotlib.pyplot as plt
import numpy as np
import module
import time
from random import uniform
import pandas as pd
from random import randint
#connect to the device
device = module.HP4155a('GPIB0::17::INSTR')
device.reset()
#set the measurement parameters
def pulse(start,stop,points,period,integration,device):
device.smu_disable_sweep(1)
device.smu_disable_sweep(3)
#disable vmus and vsus
device.disable_vsu(1)
device.disable_vsu(2)
device.disable_vmu(1)
device.disable_vmu(2)
device.user_function('R','OHM','V2/I2')
device.measurement_mode("SWE")
device.smu_function_sweep(2,"VAR1")
device.smu_mode_meas(4,"COMMON")
device.smu_function_sweep(4,"CONS")
device.smu_mode_meas(2,"VPULSE")
device.start_value_sweep(start)
device.stop_value_sweep(stop)
#define the number of steps given specific pulses
step = (stop-start)/(points-1)
device.step_sweep(step)
device.comp("VAR1","MAX")
device.display_variable("X","V2")
device.display_variable("Y1",'I2')
device.range_mode(4,"AUTO")
device.range_mode(2,"AUTO")
device.pulse_width(period/10)
device.pulse_period(period)
device.integration_time(integration)
t0 = time.time()
device.single_measurement()
while device.operation_completed()== False:
pass
t1 = time.time()
# get the execution time
elapsed_time = t1 - t0
device.autoscaling()
I_i=device.return_data("I2")
V_i=device.return_data("V2")
R_i = device.return_data("R")
expected_time = period*int(points)
times = (elapsed_time,expected_time)
values = (V_i,I_i,R_i)
return times,values
```
%% Output
---------------------------------------------------------------------------
VisaIOError Traceback (most recent call last)
Cell In[1], line 15
13 #connect to the device
14 device = module.HP4155a('GPIB0::17::INSTR')
---> 15 device.reset()
17 #set the measurement parameters
18 def pulse(start,stop,points,period,integration,device):
File ~\labcode\hp4155\memristor\..\module.py:18, in HP4155a.reset(self)
17 def reset(self):
---> 18 self.inst.write("*RST")
File ~\AppData\Local\Programs\Python\Python311\Lib\site-packages\pyvisa\resources\messagebased.py:197, in MessageBasedResource.write(self, message, termination, encoding)
191 warnings.warn(
192 "write message already ends with " "termination characters",
193 stacklevel=2,
194 )
195 message += term
--> 197 count = self.write_raw(message.encode(enco))
199 return count
File ~\AppData\Local\Programs\Python\Python311\Lib\site-packages\pyvisa\resources\messagebased.py:157, in MessageBasedResource.write_raw(self, message)
143 def write_raw(self, message: bytes) -> int:
144 """Write a byte message to the device.
145
146 Parameters
(...)
155
156 """
--> 157 return self.visalib.write(self.session, message)[0]
File ~\AppData\Local\Programs\Python\Python311\Lib\site-packages\pyvisa\ctwrapper\functions.py:2796, in write(library, session, data)
2794 return_count = ViUInt32()
2795 # [ViSession, ViBuf, ViUInt32, ViPUInt32]
-> 2796 ret = library.viWrite(session, data, len(data), byref(return_count))
2797 return return_count.value, ret
File ~\AppData\Local\Programs\Python\Python311\Lib\site-packages\pyvisa\ctwrapper\highlevel.py:226, in IVIVisaLibrary._return_handler(self, ret_value, func, arguments)
223 # Set session back to a safe value
224 session = None
--> 226 return self.handle_return_value(session, ret_value)
File ~\AppData\Local\Programs\Python\Python311\Lib\site-packages\pyvisa\highlevel.py:251, in VisaLibraryBase.handle_return_value(self, session, status_code)
248 self._last_status_in_session[session] = rv
250 if rv < 0:
--> 251 raise errors.VisaIOError(rv)
253 if rv in self.issue_warning_on:
254 if session and rv not in self._ignore_warning_in_session[session]:
VisaIOError: VI_ERROR_RSRC_LOCKED (-1073807345): Specified type of lock cannot be obtained, or specified operation cannot be performed, because the resource is locked.
%% Cell type:code id:5173db43-2301-4946-9dbb-9296d61b979f tags:
``` python
index_start = int(input("Please Give The number of first iteration:"))
index_stop = int(input("Please Give the number of the last iteration"))
measurement = input("Give the name of the measurement:")
start = int(input("Give The Start Value:"))
stop = int(input("Give The Stop Value:"))
#set the number of iterations
for i in range(index_start-1,index_stop):
#for each iteration choose a random period and round it to 3 decimal points
period = uniform(0.005,1)
period = round(period,3)
#for each period choose 5 random pulse numbers from 2 to 100
pulses = [randint(2, 100) for p in range(5)]
#iterate over the pulses list
for j in range(len(pulses)):
#execute the measuremnt first for short and then medium integration time
for integration in ["SHOR","MED"]:
filename = r"\\FILESERVER\public\Datentransfer\Asonitis, Alexandros\memristor test\pulse_measurements\evaluation_" + f"{measurement}_{integration}_{pulses[j]}_{i+1}.txt"
times,values = pulse(start,stop,pulses[j],period,integration,device)
with open(filename,"w") as f:
f.write(f"{measurement}"+"\n")
f.write(f"period(s):{period}"+"\n")
f.write(f"execution time(s):{times[0]}"+"\n")
f.write(f"expected time(s):{times[1]}"+"\n")
f.write(f"number of pulses:{pulses[j]}"+"\n\n")
zipped = list(zip(values[0],values[1], values[2]))
df = pd.DataFrame(zipped, columns=['VPULSE(V)', 'IPULSE(A)', 'RPULSE(Ohm)'])
f.write("Results Pulse:\n")
f.write(df.to_string())
print("programm finished")
```
%% Output
Please Give The number of first iteration: 1
Please Give the number of the last iteration 10
Give the name of the measurement: DRAIN
Give The Start Value: 0
Give The Stop Value: 15
programm finished
%% Cell type:code id:6a4234c9-cf9f-42e2-99e8-f7ac9d1d5beb tags:
``` python
print(device.error())
```
%% Output
+0,"No error"
%% Cell type:code id:4aab235b-1533-4ae0-b4bb-930e5d3e0116 tags:
``` python
```
......
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