[Tkinter] Show temperature in gui

[katastroooof]

YOU my friend, are a magician !
Thank you so much for your help.

[katastroooof]

Ok, so now my GUI is running very nicely when started from Python3 shell.
There is one error message:

Traceback (most recent call last):
File "FRAMO.py", line 192, in <module>
app = Application(root)
File "FRAMO.py", line 28, in __init__
self.start()
TypeError: 'NoneType' object is not callable

When trying to start from terminal I get the same error message but the GUI doesn't run.
I'm trying to get it to boot at startup , could this error be the reason why it doesn't?

Here's my current code:

#!/usr/bin/python

from tkinter import *
import tkinter as tk
from max31855 import MAX31855, MAX31855Error
import time



UPDATE_RATE = 2000
UPDATE_RATE1 = 10000
global Running
Running = False


class Application(tk.Frame):
    
    
    
    def __init__(self, master):
        tk.Frame.__init__(self, master)
        self.grid
        self.create_widgets()
        self.updater()
        self.updater1()
        self.start()
        self.stop()


        
    def create_widgets(self):

        #FRAMO LOGO
        self.label=tk.Label(self.master, image=logo)
        self.label.columnconfigure(0, weight=1)
        self.label.rowconfigure(0, weight=1)
        self.label.grid(row=0, column=3)
        
        #TEMPERATURER
        
        self.label1=tk.Label(self.master,text='Initial value',
                            fg='blue', font=("Arial", 36, "bold"),
                            background='#CDC5D9')
        self.label1.columnconfigure(0, weight=1)
        self.label1.rowconfigure(0, weight=1)
        self.label1.grid(row=0, column=1)

        #NAVN PÅ SENSORER

        self.label2=tk.Label(self.master,text='Sensor1\nSensor2\nSensor3\nSensor4\nSensor5\nSensor6',
                            fg='blue', font=("Arial", 36, "bold"),
                            background='#CDC5D9')
        self.label2.columnconfigure(0, weight=1)
        self.label2.rowconfigure(0, weight=1)
        self.label2.grid(row=0, column=2)

        #STATUS
        
        self.label3=tk.Label(self.master,text='Status',
                            fg='blue', font=("Arial", 20, "bold"),
                            background='#CDC5D9')
        self.label3.columnconfigure(0, weight=1)
        self.label3.rowconfigure(0, weight=1)
        self.label3.grid(row=2, column=2)
 
        #START KNAPP
        self.start=tk.Button(self.master, text="START", command=self.start, 
                  bg="green", font=("Arial", 48, "bold")).grid(row=1, column=1)
      
        
        #STOPP KNAPP
        self.stop=tk.Button(self.master, text="STOPP", command=self.stop,
                  bg="yellow", font=("Arial", 48, "bold")).grid(row=1, column=2)

        #AVSLUTT
        self.end=tk.Button(self.master, text="SLÅ AV", command=self.end,
                  bg="red", font=("Arial", 48, "bold")).grid(row=1, column=3)


    def end(self):
        from subprocess import call
        call ("sudo poweroff", shell=True)
        

           
    def start(self):
        # enable logging #
        self.label3['text'] = "Logging startet"
        self.label3["fg"] = "green"
        f = open('/media/pi/KINGSTON/LOGG', 'a')
        print (f.write("-------------------------------\n"))
        print (f.write("Logging har startet\n"))
        print (f.write("\n"))
        print (f.write(time.strftime("%H:%M:%S\n")))
        print (f.write(time.strftime("%d/%m/%Y\n")))
        print (f.write("-------------------------------\n"))
        global Running
        Running = True
        
        

    def stop(self):
        self.label3['text'] = "Logging ferdig"
        self.label3["fg"] = "red"
        # Disable logging #
        f = open('/media/pi/KINGSTON/LOGG', 'a')
        print (f.write("-------------------------------\n"))
        print (f.write("Logging avsluttet\n"))
        print (f.write("\n"))
        print (f.write(time.strftime("%H:%M:%S\n")))
        print (f.write(time.strftime("%d/%m/%Y\n")))
        global Running
        Running = False

          
    def updater(self):

        ## SKRIV TIL GUI ##
        self.after(UPDATE_RATE, self.updater)
              
        cs_pins = [25, 8, 7, 5, 6, 12]
        clock_pin = 11
        data_pin = 9
        units = "c"
        thermocouples = []
        for cs_pin in cs_pins:
                thermocouples.append(MAX31855(cs_pin, clock_pin, data_pin, units))
        meh = True
        if (meh):
                try:
                    acc = []
                    for thermocouple in thermocouples:
                        rj = thermocouple.get_rj()
                        try:
                            tc = thermocouple.get()
                        except MAX31855Error as e:
                            tc = "Error: "+ e.value
                            meh = False
                        acc.append(tc)
                    self.label1['text'] = ' {} '.format('\n '.join(str(x) for x in acc))     
                    self.label1["fg"] = "green"
                except KeyboardInterrupt:
                    meh = False
        for thermocouple in thermocouples:
            thermocouple.cleanup()        
       
         
    def updater1(self):
        
        ## SKRIV TIL USB ##
        
        self.after(UPDATE_RATE1, self.updater1)
        f = open('/media/pi/KINGSTON/LOGG', 'a')

        if Running:
            
            cs_pins = [25, 8, 7, 5, 6, 12]
            clock_pin = 11
            data_pin = 9
            units = "c"
            thermocouples = []
            for cs_pin in cs_pins:
                    thermocouples.append(MAX31855(cs_pin, clock_pin, data_pin, units))
            meh = True
            if (meh):
                    try:
                        for thermocouple in thermocouples:
                            rj = thermocouple.get_rj()
                            try:
                                tc = thermocouple.get()
                            except MAX31855Error as e:
                                tc = "Error: "+ e.value
                                meh = False           
                            print (f.write("Sensor: {} *C".format(tc))), (f.write("  kl.  ")), (f.write(time.strftime("%H:%M:%S\n")))
                    except KeyboardInterrupt:
                        meh = False
            for thermocouple in thermocouples:
                thermocouple.cleanup()                     
       
root = tk.Tk()
logo = tk.PhotoImage(file="logo.gif")
root.title("VIRK DIN SATAN")
root.attributes('-fullscreen', True)
app = Application(root)
app.grid()
self.root.columnconfigure(0, weight=1)
self.root.rowconfigure(0, weight=1)
self.root = root
root.geometry("700x700")
root.mainloop

[Gribouillis]

There is one error message:

In create_widgets() you define members self.start, self.stop etc. They shadow the methods start(), stop(), so that python can no longer call the method self.start() because self.start is a Button. The solution is to change the names of the said members. You can call them self.start_btn etc.

[katastroooof]

Thanks, so now that is fixed.
When running python3 filename.py in terminal , the GUI does not appear, only executing commands.
Any good ideas on how to run at boot?

[Gribouillis]

Did you write

root.mainloop()

with parentheses at the end of the file?

In order to run at boot, it depends on your OS.

[katastroooof]

Indeed, that helped.
Im running Raspbian , Debian Jessie
Tried with rc.local and systemctl but none of them were succesfull.
rc.local is working but not at boot.

[Gribouillis]

Im running Raspbian , Debian Jessie

Did you try one of the online tutorials, such as this one? Perhaps the systemd approach, or simply crontab?

[katastroooof]

After trying with systemd approach and crontab and simply failing,
(when booting to CLI i got tk.tkinter.tclerror no display name and no $display enviorment root =tk.Tk() - tried various things to fix that but...)
I ended up with this:
sudo nano /etc/xdg/lxsession/LXDE-pi/autostart
added @sh /home/pi/startup.sh

Created the startup file:
sudo nano /home/pi/startup.sh

Wrote in file:
#!/usr/bin/sh
sleep 4
python3 /home/pi/name_of_app.py

Saved it.

Made it executable:
sudo chmod +x /home/pi/startup.sh

Now its starting 4 seconds after booting to desktop.