Emulate keyboard from GPIO

buttonRefresh.py

#buttonRefresh.py
#by robotto - november 2016
#reads a button on a pi and executes a call to xte with  
# a key sequence.

# sudo apt-get install python-rpi-gpio python3-rpi.gpio
 
from subprocess import Popen, PIPE #to call xte
import RPi.GPIO as GPIO #for button
from time import sleep #for debounce

#BCM pin numbering ( look at https://pinout.xyz/ )
GPIO.setmode(GPIO.BCM)

#Pin is set to utilize the internal pull-up resistor, 
# so a buttonpress will ground the pin
GPIO.setup(24, GPIO.IN, pull_up_down = GPIO.PUD_UP)


try:
	while True:

		sleep(0.02) #debounce for ~20mS
		GPIO.wait_for_edge(24, GPIO.FALLING)

		print('Button Pressed')
  
		keypress('''key F5''') ##MAGIC HAPPENS HERE

		sleep(0.02) #debounce for ~20mS
		GPIO.wait_for_edge(24, GPIO.RISING)
		print('Button Released')


#cleanup:
except KeyboardInterrupt:
	pass
GPIO.cleanup()


def keypress(sequence):
    p = Popen(['xte'], stdin=PIPE)
    p.communicate(input=sequence)