NFCpyでタグに書き込む

hardware

setup

brew install libusb
pip3 install nfcpy

script

公式のものを改変

nfcwriter.py

import nfc
import sys

def on_connect(tag):
    global data 

    if tag.ndef is not None:
        for record in tag.ndef.records:
            print(record)
        if tag.ndef.is_writeable:
            from ndef import TextRecord
            tag.ndef.records = [TextRecord(data)]
            print("write complete")

def main():

    with nfc.ContactlessFrontend("usb") as clf:
        rdwr = {
            'on-connect': on_connect
        }
        clf.connect(rdwr=rdwr)


if __name__ == '__main__':
    global data 
    if len(sys.argv) > 1:
        data=sys.argv[1]
        print("Put NFC-Tag")
        main()
    else: 
        print("Need Record-Text")

実行

python3 nfcwriter.py helloworld