test.py

from mfrc522 import MFRC522
from utime import sleep
from machine import Pin,I2C
from pico_i2c_lcd import I2cLcd

red = [0, "mather"]
pink = [0, "shlomit"]
blu = [0, "yoval"]
yellow = [0, "magen"]
# CONSTANTS
KEY_UP = const(0)
KEY_DOWN = const(1)

keys = [['1', '2', '3', 'add'], ['4', '5', '6', 'sub'], ['del', '0', 'clear', 'trans'], ['7', '8', '9', 'set']]

# Pin names for Pico
rows = [16, 17, 19, 18]
cols = [20, 21, 22, 26]

# set pins for rows as outputs
row_pins = [Pin(pin_name, mode=Pin.OUT) for pin_name in rows]

# set pins for cols as inputs
col_pins = [Pin(pin_name, mode=Pin.IN, pull=Pin.PULL_DOWN) for pin_name in cols]

def init():
for row_pin in row_pins:
row_pin.low()

def scan(row, col):
"""Scan the keypad"""
# Set the current column to high
row_pins[row].high()
key = None

# Check for keypressed events
if col_pins[col].value() == KEY_DOWN:
key = KEY_DOWN
if col_pins[col].value() == KEY_UP:
key = KEY_UP
row_pins[row].low()

# Return the key state
return key
def dig():
print("Starting")

# Set all the columns to low
init()
cunt = 0
while True:
for row in range(4):
for col in range(4):
key = scan(row, col)
if key == KEY_DOWN:
print("Key Pressed:", keys[row][col])
sleep(0.3)
cunt = cunt + 1
return keys[row][col]
def shamen(card):
global red
global pink
global blu
global yellow
if card == '510d0b0c':
card = red
if card == "512c080c":
card = pink
if card == "514a230c":
card = blu
if card == "61570a0c":
card = yellow
comb = ""
x = ""
mlcd("{}s' money \n {}$".format(card[1], card[0]))
print(card)
x = dig()
while len(x) > 1:
mlcd("Start with \n a number")
x = dig()
while len(x) < 2 or x == "del" or x == "clear":
if len(x)< 2:
comb = comb + x
if x == "del":
comb = comb[0:-1]
if x == "clear":
comb = ""
mlcd(comb)
x = dig()
print(comb)
comb = int(comb)
if x == "add":
card[0] = card[0] + comb
mlcd("new balance is\n {}$".format(card[0]))
elif x == "sub":
card[0] = card[0] - comb
mlcd("new balance is\n {}$".format(card[0]))
elif x == "set":
card[0] = comb
mlcd("new balance is\n {}$".format(card[0]))
elif x == "trans":
card2 = frfid()
if card2 == '510d0b0c':
card2 = red
if card2 == "512c080c":
card2 = pink
if card2 == "514a230c":
card2 = blu
if card2 == "61570a0c":
card2 = yellow
card[0] = card[0] - comb
card2[0] = card2[0] + comb
mlcd("{}:{}\n{}:{}".format(card[1], card[0], card2[1], card2[0]))

def mlcd(x):
i2c = I2C(0, sda=Pin(4), scl=Pin(5), freq=400000)
I2C_ADDR = i2c.scan()[0]
lcd = I2cLcd(i2c, I2C_ADDR, 2, 16)
lcd.clear()
print(I2C_ADDR)
lcd.blink_cursor_on()
lcd.putstr(x)

def uidToString(uid):
mystring = ""
for i in uid:
mystring = "%02X" % i + mystring
return mystring

def frfid():
rc522 = MFRC522(spi_id=1,sck=14,miso=8,mosi=11,cs=9,rst=3)

print("")
print("Place the card")
print("")
mlcd("Place a card wuw")
while True:

(stat, tag_type) = rc522.request(rc522.REQALL)
global rfid_data
if stat == rc522.OK:
(status, raw_uid) = rc522.SelectTagSN()
if stat == rc522.OK:
rfid_data = "{:02x}{:02x}{:02x}{:02x}".format(raw_uid[0], raw_uid[1], raw_uid[2], raw_uid[3])
print("Card detected! UID: {}".format(rfid_data))
return rfid_data
sleep(0.5)

while True:
shamen(frfid())
sleep(1.5)
print(red, pink, blu, yellow)