ELAB-RFID-locks/cardlistener.py

import time, json
import RPi.GPIO as GPIO
import keyboard

if __name__ == '__main__':
	pin_config = []
	with open('pin_config.json') as pin_config_stream:
		pin_config = json.load(pin_config_stream)
	if pin_config['mode'] == 'BOARD':
		GPIO.setmode(GPIO.BOARD)
	else:
		GPIO.setmode(GPIO.BCM)
	GPIO.setup(pin_config['fridge_btn'], GPIO.IN, pull_up_down=GPIO.PUD_UP)
	GPIO.setup(pin_config['tools_btn'], GPIO.IN, pull_up_down=GPIO.PUD_UP)
	GPIO.setup(pin_config['fridge_red_LED'], GPIO.OUT)
	GPIO.setup(pin_config['fridge_grn_LED'], GPIO.OUT)
	GPIO.setup(pin_config['tools_red_LED'], GPIO.OUT)
	GPIO.setup(pin_config['tools_grn_LED'], GPIO.OUT)
	while True:
		print "Enter card ID:"
		cardID_input = keyboard.record(until='enter')
		cardID = keyboard.get_typed_strings(cardID_input)[0]
		event = {}
		event["time"] = time.time()
		event["cardID"] = cardID
		event["name"] = ''
		try:
			with open('cards/' + cardID + '.json') as card_data:
				data = json.load(card_data)
				event["name"] = data['name']
				if data['secretTools']:
					GPIO.output(pin_config['tools_grn_LED'], GPIO.HIGH)
				else:
					GPIO.output(pin_config['tools_red_LED'], GPIO.HIGH)
				if data['fridge']:
					GPIO.output(pin_config['fridge_grn_LED'], GPIO.HIGH)
				else:
					GPIO.output(pin_config['fridge_red_LED'], GPIO.HIGH)
				timeout = time.time() + 5 # 5 seconds timeout
				while wait:
					if data['secretTools'] and GPIO.input(pin_config['tools_btn']) == 0:
						wait = False
						GPIO.output(pin_config['fridge_grn_LED'], GPIO.LOW)
						GPIO.output(pin_config['tools_grn_LED'], GPIO.LOW)
						GPIO.output(pin_config['fridge_red_LED'], GPIO.LOW)
						GPIO.output(pin_config['tools_red_LED'], GPIO.LOW)
						# Open tools
					if data['fridge'] and GPIO.input(pin_config['fridge_btn']) == 0:
						GPIO.output(pin_config['fridge_grn_LED'], GPIO.LOW)
						GPIO.output(pin_config['tools_grn_LED'], GPIO.LOW)
						GPIO.output(pin_config['fridge_red_LED'], GPIO.LOW)
						GPIO.output(pin_config['tools_red_LED'], GPIO.LOW)
						wait = False
						# Open fridge
					if time.time() > timeout:
						GPIO.output(pin_config['fridge_grn_LED'], GPIO.LOW)
						GPIO.output(pin_config['tools_grn_LED'], GPIO.LOW)
						GPIO.output(pin_config['fridge_red_LED'], GPIO.LOW)
						GPIO.output(pin_config['tools_red_LED'], GPIO.LOW)
						wait = False
		except:
			print "Card not registered."
		history = []
		try:
			with open('history.json', 'r') as json_data:
				history = json.load(json_data)
		except:
			print 'Initializing new history file.'
		finally:
			history.append(event)
		with open('history.json', 'w') as outfile:
			json.dump(history, outfile)