PySimpleGUI/DemoPrograms old/Demo_Pi_LEDs.py

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#!/usr/bin/env python
import sys
if sys.version_info[0] >= 3:
import PySimpleGUI as sg
else:
import PySimpleGUI27 as sg
# GUI for switching an LED on and off to GPIO14
# GPIO and time library:
import time
if sys.platform == 'win32':
from random import randint
class GPIO():
LOW = 0
HIGH = 1
BCM = OUT = 0
current_value = 0
@classmethod
def setmode(self, mode):
return
@classmethod
def setup(self, arg1, arg2):
return
@classmethod
def output(self, port, value):
self.current_value = value
@classmethod
def input(self, port):
return self.current_value
else:
import RPi.GPIO as GPIO
# determine that GPIO numbers are used:
GPIO.setmode(GPIO.BCM)
GPIO.setup(14, GPIO.OUT)
def SwitchLED():
varLedStatus = GPIO.input(14)
if varLedStatus == 0:
GPIO.output(14, GPIO.HIGH)
return "LED is switched ON"
else:
GPIO.output(14, GPIO.LOW)
return "LED is switched OFF"
def FlashLED():
for i in range(5):
GPIO.output(14, GPIO.HIGH)
time.sleep(0.5)
GPIO.output(14, GPIO.LOW)
time.sleep(0.5)
layout = [[sg.T('Raspberry Pi LEDs')],
[sg.T('', size=(20, 1), key='output')],
[sg.Button('Switch LED')],
[sg.Button('Flash LED')],
[sg.Exit()]]
window = sg.Window('Raspberry Pi GUI', layout, grab_anywhere=False)
while True:
event, values = window.Read()
if event in (None, 'Exit'):
break
if event == 'Switch LED':
window.FindElement('output').Update(SwitchLED())
elif event == 'Flash LED':
window.FindElement('output').Update('LED is Flashing')
window.Refresh()
FlashLED()
window.FindElement('output').Update('')
window.Close()
sg.Popup('Done... exiting')