Shift.py

import RPi.GPIO as GPIO

import time

GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)

outpins = [22, 23, 24]

relayNumber = 2

for i in outpins:
	GPIO.setup(i, GPIO.OUT)
	GPIO.output(i, GPIO.HIGH)
	
def Shift(output, relayNumber):
	for i in range(8*relayNumber):
		if output[i] == "1":
			GPIO.output(23, GPIO.LOW)
		elif output[i] == "0":
			GPIO.output(23, GPIO.HIGH)
		else:
			print("ERROR")
		GPIO.output(22, GPIO.HIGH)
		GPIO.output(22, GPIO.LOW)
	GPIO.output(24, GPIO.HIGH)
	GPIO.output(24, GPIO.LOW)

def demo(relayNumber):
	connected = 12
	timer = 0.1
	while True:
		for i in range(connected):
			output = (i-1)*"0" + "1" + (8*relayNumber-i)*"0"
			print(output)
			Shift(output[::-1], relayNumber)
			time.sleep(timer)
		#timer = timer - timer/10
	
def checkOutput(output, relayNumber):
	if len(output)>8*relayNumber:
		print("Only " + str(8*relayNumber) + " bits will be displayed")
	elif len(output)<8*relayNumber:
		output = output + "0"*(8*relayNumber-len(output))
	return output[::-1]
	
def binary(relayNumber):
	output = input("What binary do you want to display? > ")
	output = checkOutput(output, relayNumber)
	Shift(output, relayNumber)
	binary(relayNumber)
	
def relayIndex(relayNumber, currentBinary):
	print(currentBinary)
	output = input("What relay number do you want to toggle? > ")
	if int(output) > len(currentBinary)-1:
		print("This relay number doesn't exist")
	elif 0 <= int(output) < len(currentBinary):
		output = int(output)
		if currentBinary[output] == "1":
			currentBinary = currentBinary[:output] + "0" + currentBinary[output+1:]
		elif currentBinary[output] == "0":
			currentBinary = currentBinary[:output] + "1" + currentBinary[output+1:]
	else:
		print("Invalid Input")
	Shift(currentBinary[::-1], relayNumber)
	relayIndex(relayNumber, currentBinary)

def main(relayNumber):
	output = "00000000"*relayNumber
	Shift(output, relayNumber)
	output = input("What input do you want? Binary/Demo/Index > ")
	if output == "Binary":
		binary(relayNumber)
	elif output == "Demo":
		demo(relayNumber)
	elif output == "Index":
		relayIndex(relayNumber, "00000000"*relayNumber)
	else:
		main(relayNumber)
	

	
main(relayNumber)