Select Baudrate from dropdown display the serial data continuously in python shell












0














I am trying to create the drop-down menu and by selecting the correct baud rate from the dropdown list, data should display serial port data in python shell as well as in message box,



Mentioned below is my code:



import serial
from tkinter import *
import tkinter as ttk
from tkinter import *



top = Tk()
top.title("Tk dropdown example")

# Add a grid
mainframe = Frame(top)
mainframe.grid(column=10,row=10, sticky=(N,W,E,S) )
mainframe.columnconfigure(0, weight = 1)
mainframe.rowconfigure(0, weight = 1)
mainframe.pack(pady = 100, padx = 100)

# Create a Tkinter variable
tkvar = StringVar(top)

# Dictionary with options
choices = { '9600','19200','34800'}
tkvar.set('9600') # set the default option

popupMenu = OptionMenu(mainframe, tkvar, *choices)
Label(mainframe, text="Baudrate").grid(row = 1, column = 1)
popupMenu.grid(row = 2, column =1)


ard = serial.Serial('COM4', timeout=1)
ard.baudrate = drop
k = ard.readline().decode('ascii')
print(k)

# on change dropdown value
def change_dropdown(*args):
global drop;
drop = int(tkvar.get());
#ard.baudrate = drop;
print( drop )
return drop


# link function to change dropdown
tkvar.trace('w', change_dropdown)

top.mainloop()


But while running this code then I am facing some error,



============== RESTART: C:UsersMishaDesktoptestdropTest.py ==============
Traceback (most recent call last):

File "C:UsersMishaDesktoptestdropTest.py", line 31, in <module>
ard.baudrate = drop
NameError: name 'drop' is not defined


I tried from every point but I am not able to resolve this. Any suggestion on this to run this code will be a great help.










share|improve this question
























  • " I want to display serial port data in python shell continuously outside the drop-down loop": Please, edit your Question and explain in detail WHY? As it stands, this will not work. Your ard.baudrate =... are executed before the .mainloop()
    – stovfl
    Dec 27 at 14:30


















0














I am trying to create the drop-down menu and by selecting the correct baud rate from the dropdown list, data should display serial port data in python shell as well as in message box,



Mentioned below is my code:



import serial
from tkinter import *
import tkinter as ttk
from tkinter import *



top = Tk()
top.title("Tk dropdown example")

# Add a grid
mainframe = Frame(top)
mainframe.grid(column=10,row=10, sticky=(N,W,E,S) )
mainframe.columnconfigure(0, weight = 1)
mainframe.rowconfigure(0, weight = 1)
mainframe.pack(pady = 100, padx = 100)

# Create a Tkinter variable
tkvar = StringVar(top)

# Dictionary with options
choices = { '9600','19200','34800'}
tkvar.set('9600') # set the default option

popupMenu = OptionMenu(mainframe, tkvar, *choices)
Label(mainframe, text="Baudrate").grid(row = 1, column = 1)
popupMenu.grid(row = 2, column =1)


ard = serial.Serial('COM4', timeout=1)
ard.baudrate = drop
k = ard.readline().decode('ascii')
print(k)

# on change dropdown value
def change_dropdown(*args):
global drop;
drop = int(tkvar.get());
#ard.baudrate = drop;
print( drop )
return drop


# link function to change dropdown
tkvar.trace('w', change_dropdown)

top.mainloop()


But while running this code then I am facing some error,



============== RESTART: C:UsersMishaDesktoptestdropTest.py ==============
Traceback (most recent call last):

File "C:UsersMishaDesktoptestdropTest.py", line 31, in <module>
ard.baudrate = drop
NameError: name 'drop' is not defined


I tried from every point but I am not able to resolve this. Any suggestion on this to run this code will be a great help.










share|improve this question
























  • " I want to display serial port data in python shell continuously outside the drop-down loop": Please, edit your Question and explain in detail WHY? As it stands, this will not work. Your ard.baudrate =... are executed before the .mainloop()
    – stovfl
    Dec 27 at 14:30
















0












0








0


1





I am trying to create the drop-down menu and by selecting the correct baud rate from the dropdown list, data should display serial port data in python shell as well as in message box,



Mentioned below is my code:



import serial
from tkinter import *
import tkinter as ttk
from tkinter import *



top = Tk()
top.title("Tk dropdown example")

# Add a grid
mainframe = Frame(top)
mainframe.grid(column=10,row=10, sticky=(N,W,E,S) )
mainframe.columnconfigure(0, weight = 1)
mainframe.rowconfigure(0, weight = 1)
mainframe.pack(pady = 100, padx = 100)

# Create a Tkinter variable
tkvar = StringVar(top)

# Dictionary with options
choices = { '9600','19200','34800'}
tkvar.set('9600') # set the default option

popupMenu = OptionMenu(mainframe, tkvar, *choices)
Label(mainframe, text="Baudrate").grid(row = 1, column = 1)
popupMenu.grid(row = 2, column =1)


ard = serial.Serial('COM4', timeout=1)
ard.baudrate = drop
k = ard.readline().decode('ascii')
print(k)

# on change dropdown value
def change_dropdown(*args):
global drop;
drop = int(tkvar.get());
#ard.baudrate = drop;
print( drop )
return drop


# link function to change dropdown
tkvar.trace('w', change_dropdown)

top.mainloop()


But while running this code then I am facing some error,



============== RESTART: C:UsersMishaDesktoptestdropTest.py ==============
Traceback (most recent call last):

File "C:UsersMishaDesktoptestdropTest.py", line 31, in <module>
ard.baudrate = drop
NameError: name 'drop' is not defined


I tried from every point but I am not able to resolve this. Any suggestion on this to run this code will be a great help.










share|improve this question















I am trying to create the drop-down menu and by selecting the correct baud rate from the dropdown list, data should display serial port data in python shell as well as in message box,



Mentioned below is my code:



import serial
from tkinter import *
import tkinter as ttk
from tkinter import *



top = Tk()
top.title("Tk dropdown example")

# Add a grid
mainframe = Frame(top)
mainframe.grid(column=10,row=10, sticky=(N,W,E,S) )
mainframe.columnconfigure(0, weight = 1)
mainframe.rowconfigure(0, weight = 1)
mainframe.pack(pady = 100, padx = 100)

# Create a Tkinter variable
tkvar = StringVar(top)

# Dictionary with options
choices = { '9600','19200','34800'}
tkvar.set('9600') # set the default option

popupMenu = OptionMenu(mainframe, tkvar, *choices)
Label(mainframe, text="Baudrate").grid(row = 1, column = 1)
popupMenu.grid(row = 2, column =1)


ard = serial.Serial('COM4', timeout=1)
ard.baudrate = drop
k = ard.readline().decode('ascii')
print(k)

# on change dropdown value
def change_dropdown(*args):
global drop;
drop = int(tkvar.get());
#ard.baudrate = drop;
print( drop )
return drop


# link function to change dropdown
tkvar.trace('w', change_dropdown)

top.mainloop()


But while running this code then I am facing some error,



============== RESTART: C:UsersMishaDesktoptestdropTest.py ==============
Traceback (most recent call last):

File "C:UsersMishaDesktoptestdropTest.py", line 31, in <module>
ard.baudrate = drop
NameError: name 'drop' is not defined


I tried from every point but I am not able to resolve this. Any suggestion on this to run this code will be a great help.







python python-3.x tkinter pyserial






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share|improve this question













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share|improve this question








edited Dec 27 at 15:31

























asked Dec 27 at 13:12









varul jain

408




408












  • " I want to display serial port data in python shell continuously outside the drop-down loop": Please, edit your Question and explain in detail WHY? As it stands, this will not work. Your ard.baudrate =... are executed before the .mainloop()
    – stovfl
    Dec 27 at 14:30




















  • " I want to display serial port data in python shell continuously outside the drop-down loop": Please, edit your Question and explain in detail WHY? As it stands, this will not work. Your ard.baudrate =... are executed before the .mainloop()
    – stovfl
    Dec 27 at 14:30


















" I want to display serial port data in python shell continuously outside the drop-down loop": Please, edit your Question and explain in detail WHY? As it stands, this will not work. Your ard.baudrate =... are executed before the .mainloop()
– stovfl
Dec 27 at 14:30






" I want to display serial port data in python shell continuously outside the drop-down loop": Please, edit your Question and explain in detail WHY? As it stands, this will not work. Your ard.baudrate =... are executed before the .mainloop()
– stovfl
Dec 27 at 14:30



















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