Day11-activity5-SeveralAttemps.py

gistfile1.txt

import time

from machine import Pin

# Set up column pins (inputs)
key1 = Pin(11, Pin.IN, Pin.PULL_DOWN)
key2 = Pin(10, Pin.IN, Pin.PULL_DOWN)
key3 = Pin(13, Pin.IN, Pin.PULL_DOWN)
key4 = Pin(12, Pin.IN, Pin.PULL_DOWN)

# Set up our LED
blockLED = Pin(6, Pin.OUT)
# Create list of presents
presents = ["Train set", "Furby", "Boomerang", "YoYo"]
# Set your passcode in a list
passcode = [1, 2, 3, 4]
# Empty list for the entered password
userentry = []
# Create state variable
state = 0
# restart the program if the passcode is incorrect
counter = 0
# Create keypress variable
key = 0

# Append function


def init():
    global userentry
    global state
    userentry = []
    state = 0


def appendkey():
    global state
    userentry.append(key)
    print("*", end="")
    state = 1

# Delay + print function


def myprint(mytext):
    print(mytext)
    time.sleep(0.5)


## Start our program ##
print("")  # Empty line
print("Welcome to the Secret Present List system")
time.sleep(1)

while (counter < 3):
    print("Enter the passcode to continue: ", end="")
    # While userentry length is less than 4
    while len(userentry) < 4:
        time.sleep(0.1)
        if state == 0:
            if key1.value() == 1:
                key = 1
                appendkey()
            elif key2.value() == 1:
                key = 2
                appendkey()
            elif key3.value() == 1:
                key = 3
                appendkey()
            elif key4.value() == 1:
                key = 4
                appendkey()
        # If state is 1 and all keys are LOW
        elif state == 1 and key1.value() == key2.value() == key3.value() == key4.value() == 0:
            state = 0
        else:
            pass  # Do nothing

    # Program only gets this far if userentry is 4 characters long

    # If the passcode is correct
    if userentry == passcode:
        blockLED.value(1)  # LED on
        print("\n")  # Empty newline
        print("----------------------")
        print("*** ACCESS GRANTED ***")
        myprint("----------------------")
        myprint("Secret present list:")
        # Print each present from our list
        for i in presents:
            myprint(i)
        myprint("----------------------")
        blockLED.value(0)  # LED off
        counter = 3

    # If the keyed code is incorrect
    else:
        myprint("\n------------------")
        myprint("INCORRECT PASSCODE")
        myprint("ACCESS DENIED")
        counter = counter + 1
        init()
        print("TRY AGAIN ", str(3-counter), "attempts left ")
        time.sleep(1)