nfc raspberrypi read tag

ref:
[1] http://tfukui2012.blog.fc2.com/blog-entry-22.html
[2] http://nfcpy.readthedocs.io/en/latest/modules/clf.html

nfc tagを読む
16進法らしいのでそのencodeだけ気をつける.

read_tag.py

import nfc
import time

def connected (tag):
    print(tag)
    print(tag.type)
    print( tag.idm )
    print( str(tag.idm) )
    print( str(tag.idm).encode("hex") )
    print( tag.pmm )
    print( str(tag.pmm) )
    print( str(tag.pmm).encode("hex") )
    print( tag.sys )
    print( str(tag.sys) )
    print( str(tag.sys).encode("hex") )
    time.sleep(1)

clf = nfc.ContactlessFrontend('usb')

while True:
    print('waiting...')
    result = clf.connect(rdwr={'on-connect':connected})
    print('----------------------')
    print(result)
    print( str(result.idm).encode("hex"))
    print( str(result.pmm).encode("hex"))
    print( str(result.sys).encode("hex"))
    print('scaned')

とやると,
仮に,
ID =01010501b00ac30b
PMM=03014b024f4993ff
SYS=1234
の場合(ref[2]の情報を利用)

waiting...
Type3Tag ID=01010501b00ac30b PMM=03014b024f4993ff SYS=1234
Type3Tag
|?
|?
01010501b00ac30b
1CEF???
1CEF???
03014b024f4993ff
3
3
33
----------------------
Type3Tag ID=01010501b00ac30b PMM=03014b024f4993ff SYS=1234
01010501b00ac30b
03014b024f4993ff
33
scaned
waiting...

のような感じで出る.