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GUI and GPIO on Raspberry Pi
from Tkinter import *
import time
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
GPIO.setup(17, GPIO.OUT)
GPIO.setup(18, GPIO.IN, pull_up_down=GPIO.PUD_UP)
def say_hi():
print "Lighting up LED"
GPIO.output(17, GPIO.HIGH)
time.sleep(5)
GPIO.output(17, GPIO.LOW)
def check_button():
if (GPIO.input(18) == GPIO.LOW):
labelText.set("Button Pressed.")
else:
labelText.set("")
root.after(10,check_button)
root = Tk()
button = Button(root, text="Quit.", fg="red", command=quit)
button.pack(side=RIGHT, padx=10, pady=10, ipadx=10, ipady=10)
hi_there = Button(root, text="Light my LED!", command=say_hi)
hi_there.pack(side=LEFT, padx=10, pady=10, ipadx=10, ipady=10)
labelText = StringVar()
labelText.set("Button Pressed.")
label1 = Label(root, textvariable=labelText, height=4)
label1.pack(side=LEFT)
root.title("LED Blinker")
root.geometry('500x300+200+200')
root.after(10,check_button)
root.mainloop()
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