[Tkinter] Tkinter widgets driving Arduino uno output pins

[woodcncwnc]

Program is partial working. I am able to turn pin 13 on and off. What I am trying to do is have "true" feed back when the pin changes state. I am trying to send pin 13 status ("1" or "0") to a tkinter label widget in python (below the "Exit" button) If I run using serial monitor everything works correctly. I get the text "Hello" and when I push the on button I get a "1" (no quotes) and when I push the off button I get a "0" (no quotes). Pushing Exit quits the program. Since I wrote this I am getting "PY_VAR1 in my label field. I believe this is a python problem, I will also post to Arduino. Thanks for you help in advance

Jim

#! /usr/bin/env python

import serial
import time
from tkinter import *


ArduinoSerial = serial.Serial('com3', 9600, timeout=.1)
time.sleep(2)
global status1

def led_on():
    ArduinoSerial.write(b'1')
    status1 = (ArduinoSerial.readline() .decode('utf-8').strip())
    print(status1)

def led_off():
    ArduinoSerial.write(b'0')
    status1 = (ArduinoSerial.readline().decode('utf-8').strip())
    print(status1)

def led_Exit():
    ArduinoSerial.write(b'0')
    status1 = "Quit"
    print(status1)
    quit()

root = Tk()
status1 = StringVar()
root.title("Arduino Push Buttons")
btn1 = Button(root, text="Led on", command=led_on)
btn2 = Button(root, text="Led off", command=led_off)
btn3 = Button(root, text="Exit", command=led_Exit)
msg1 = Label (root, textvariable = status1, relief=RAISED,width = 20)
btn1.pack()
btn2.pack()
btn3.pack()
msg1.pack()
status1.set(StringVar())
root.mainloop()

1. ARDUINO CODE
   
   int data;
   
   void setup() 
   { 
     Serial.begin(9600); //initialize serial COM at 9600 baudrate
     pinMode(13, OUTPUT); //make the LED pin (13) as output
     digitalWrite (13, LOW);
   } 
   void loop() 
   {
     if (Serial.available()> 0)
     {
       data = Serial.read();
     }
      if (data == '1')
       {
       digitalWrite (13, HIGH); 
       Serial.println(digitalRead(13));
       data = '2';
       }
      else if (data == '0')
       {
       digitalWrite (13, LOW);
       Serial.println(digitalRead(13));
       data = '2';
       }
   }
   ARDUINO CODE