OnConnect_Test

import nfc,ndef


def read_tag(tag):
    if tag is not None:
        data = tag.ndef.records[0]
        print(data.text + " Nuyen" )
        write_data(tag)
        return True

def write_data(tag):
    new_data = input("Enter new value for Cred-Stick (numbers only): ")
    if new_data != '':
        tag.ndef.records = [ndef.TextRecord(new_data)]
        print(new_data + " Nuyen writen to Credstck")
        return True
    else:
        print("No data to write, CredStick unchanged")
        return False

def tag_lost():
    print("Tag lost")

def main():
    reader = nfc.ContactlessFrontend('usb')

    reader.connect(rdwr={'on-connect': read_tag, 'interval': 0.5 , 'beep-on-connect': True})



if __name__ == "__main__":
    main()