Physical button interacting with tkinter button widget - button

Question

I'm making an app to run with my Raspberry Pi with Tkinter GUI. The app allready runs well. Now I want to use 2 physical buttons wired to GPIOS that interact with two of the buttons widgets I have in the app. Thanks to helpers in forums I found the way to do it as You can see in the code. But now I need to disabled in some way the physical button in order to avoid accidental push meanwhile the scripts run, as I can easly do with the widgets. I've been googling a lot but I din not found any example of whaT i need. Can some one give me orientation about the method to obtain this. Thanks in advance.
from Tkinter import *
import RPi.GPIO as GPIO
root = Tk()
root.geometry("320x480")
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(18,GPIO.IN,pull_up_down=GPIO.PUD_UP)
shootdelay = 12 #12
shootinterval = 7#7
shootnumber = 5#12
videodelay = 3
selft = 5
newset = 0
endvideo = 5
intertext = "(D:" + str(shootdelay) + ")(I:" + str(shootinterval) + ")(T:" + str(shootnumber) + ")"
flagselftim = 0
flagvideo = 0
videosetmode = 0
flagsetings = 0
flagcancel = 0
flagnewset = 0
secDelay = shootdelay
secInterv = shootinterval
secSelftim = selft
secvideo = videodelay
remainshots = shootnumber
secshoots = shootnumber - 1
seccompte = 0
readyshoots =
class intervalometer:
def __init__(self, master):
self.textBox = Text(root, height=1, width=1, relief=SUNKEN, font=('arial narrow', 17, 'normal'), bg="green",
fg="white")
self.textBox.grid(row=1, column=1, padx=3, pady=2, sticky=NSEW)
self.textBox.insert(END, "READY")
self.botshoot = Button(root, width=18, font=('arial narrow', 19, 'normal'), text="START",
activebackground="#00dfdf")
self.botshoot.grid(row=4, rowspan=2, column=0, columnspan=2, ipady=15, pady=2, sticky=NSEW)
self.botshoot.configure(command=self.start)
self.botStop = Button(root, heigh=2, font=('arial', 18, 'normal'), text="STOP/RESET", activebackground="red")
self.botStop.grid(row=13, rowspan=3, column=0, pady=1, sticky=NSEW)
self.botStop.configure(state=DISABLED, command=self.stop)
self.botQuit = Button(root, width=3, font=('arial', 18, 'normal'), text="QUIT", activebackground="red",
state=NORMAL)
self.botQuit.grid(row=13, rowspan=3, column=1, pady=1, sticky=NSEW)
self.botQuit.configure(command=self.closewindow)
GPIO.add_event_detect(18, GPIO.RISING, callback=self.start, bouncetime=200)
def start(self, *args, **kwargs):
global flagselftim
self.count = 0
self.cancel_id = None
self.botshoot.configure(state=DISABLED)
self.botStop.configure(state=NORMAL)
self.botQuit.configure(state=DISABLED)
self.start_shoot_delay()
def stop(self):
global secDelay
global secSelftim
global selft
global flagvideo
global videosetmode
global secvideo
global remainshots
global secInterv
global readyshoots
flagvideo = 0
videosetmode = 0
secDelay = shootdelay
secInterv = shootinterval
secvideo = videodelay
selft = 5
secSelftim = selft
remainshots = shootnumber
readyshoots = 1
if self.cancel_id is not None:
self.textBox.after_cancel(self.cancel_id)
self.cancel_id = None
self.textBox.insert(END, 0)
self.textBox.delete("1.0", END)
self.botshoot.configure(text="START")
self.botshoot.configure(state=NORMAL)
self.botStop.configure(state=DISABLED)
self.botQuit.configure(state=NORMAL)
self.textBox.insert(END, "READY")
self.textBox.configure(font=('arial narrow', 17, 'normal'), bg="green", fg="white")
def closewindow(self):
root.destroy()
def start_shoot_delay(self):
global secDelay
if secDelay > 9:
contador = " " + str(secDelay)
else:
contador = " " + str(secDelay)
self.textBox.delete("1.0", END)
self.textBox.configure(font=('arial narrow', 17, 'normal'), bg="red", fg="white")
self.botshoot.configure(state=DISABLED)
if self.count < shootdelay:
self.count += 1
self.textBox.insert(END, contador)
self.cancel_id = self.textBox.after(1000, self.start_shoot_delay)
secDelay -= 1
else:
self.count = 0
secDelay = shootdelay
self.start_shoot_interval()
def start_shoot_interval(self):
global secInterv
if remainshots == shootnumber:
self.start_shootings()
else:
if secInterv > 9:
contador = " " + str(secInterv)
else:
contador = " " + str(secInterv)
self.textBox.delete("1.0", END)
self.textBox.configure(font=('arial narrow', 17, 'normal'), bg="red", fg="white")
if self.count < shootinterval:
self.count += 1
self.textBox.insert(END, contador)
self.cancel_id = self.textBox.after(1000, self.start_shoot_interval)
secInterv -= 1
else:
self.count = 0
secInterv = shootinterval
self.start_shootings()
def start_shootings(self):
global remainshots
global videosetmode
global readyshoots
global secSelftim
global selft
remainshots -=1
if secSelftim <5:
txtremain = "SHOOTING = " + str(1) + "/" + str(1)
else:
txtremain = "REMAINING = " + str(remainshots) + "/" + str(shootnumber)
print "BEEP shoot nr",readyshoots, "av", shootnumber
readyshoots +=1
if remainshots >0:
self.start_shoot_interval()
else:
print "BEEP-BEEP-BEEP : end of roll"
self.etstatus.configure(text="END OF ROLL")
root.update_idletasks()
root.after(500)
readyshoots = 1
selft = 5
self.textBox.insert(END, "READY")
self.textBox.configure(font=('arial narrow', 17, 'normal'), bg="green", fg="white")
self.botshoot.configure(state=NORMAL)
self.botStop.configure(state=DISABLED)
self.botQuit.configure(state=NORMAL)
remainshots = shootnumber
intervalometer(root)
root.mainloop()

Answer 1

I don't see how this is even an issue since the start method should lock up the entire program, including the input from the button. If the button detection is in it's own thread or something, you could just add a check. The easiest thing to check is the tk Button state:
def start(self, *args, **kwargs):
if self.botshoot['state'] == DISABLED:
print 'already running'
return # abort this method
self.botshoot.configure(state=DISABLED)
# etc ...