launch_pc.py

#!/usr/bin/env python3
import socket

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.sendto(b"Cookie/tGSIMonjf803gVn4GaOQhjPwd45NxbWbSlNuN2/UPI=", ("127.0.0.1", 5005))

wait_for_button.py

#!/usr/bin/env python3
import RPi.GPIO as GPIO
import datetime
import time
from timeit import default_timer as timer

GPIO.setmode(GPIO.BCM)
mock_mode = False
power_button_pins = [5, 6]
pin_external_relay = 23
GPIO.setup(power_button_pins[0], GPIO.OUT, initial = 1)
GPIO.setup(power_button_pins[1], GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(pin_external_relay, GPIO.OUT, initial = 1)

def turn_on_pc(reason):
	print(datetime.datetime.now(), "Power on! Reason:", reason)
	if mock_mode:
		return
	GPIO.output(pin_external_relay, GPIO.LOW)
	time.sleep(0.2)
	GPIO.output(pin_external_relay, GPIO.HIGH)

def rising(channel):
	print(datetime.datetime.now(), "Rising edge")
	i = 0
	for _ in range(0, 30):
		time.sleep(0.01)
		i += GPIO.input(channel)
	if i > 5:
		turn_on_pc("button pressed - {0} polls".format(i))
	else:
		print(datetime.datetime.now(), "Not pressing - only {0} polls successful".format(i))

GPIO.add_event_detect(power_button_pins[1], GPIO.RISING, callback=rising)

import socket

try:
	sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
	sock.bind(("127.0.0.1", 5005))
	while True:
		data, addr = sock.recvfrom(1024)
		if data == b"Cookie/tGSIMonjf803gVn4GaOQhjPwd45NxbWbSlNuN2/UPI=":
			turn_on_pc("udp socket receive")
finally:
	GPIO.cleanup()