Get student id from SIT student id card using Felica reader and write list.txt & LCD display

ctrlACM1602NI.py

#!/usr/bin/env python2

import time
from smbus2 import SMBusWrapper

class LCDctrl:
    LCDaddr = 0x50

    def send(self, dtype, data):
        with SMBusWrapper(1) as bus:
            bus.write_i2c_block_data(self.LCDaddr, dtype, [data])
        self.wait(0.02)
    def sendCmd(self, cmd): 
        self.send(0x00, cmd)
    def sendData(self, data):
        self.send(0x80, data)

    def initDisplay(self):
        self.sendCmd(0x01)
        self.sendCmd(0x38)
        self.sendCmd(0x0c)
        self.sendCmd(0x06)

    def setCursorPos(self, pos):
        self.sendCmd(0x80 | pos)

    def lineBreak(self):
        self.setCursorPos(0x40)

    def wait(self, sec):
        time.sleep(sec)

    def displayStr(self, l1, l2):
        self.initDisplay()
        self.wait(0.2)
        for b in l1.encode("utf-8"):
            self.sendData(ord(b))
        self.lineBreak()
        for b in l2.encode("utf-8"):
            self.sendData(ord(b))

getstudentid.py

#!/usr/bin/env python2
from idreader import IDReader
from ctrlACM1602NI import LCDctrl

lcd = LCDctrl()

def printid(studentid, afrom, ato):
    print("ID: " + studentid)
    print("from: " + afrom + ", to: " + ato)
    try:
        with open("./list.txt", mode="a+") as f:
            if (studentid.decode("utf-8").lower() + "@shibaura-it.ac.jp\n" not in f.readlines()):
                f.write(studentid.decode("utf-8").lower() + "@shibaura-it.ac.jp\n")
        lcd.displayStr(studentid.decode("utf-8"), "Ready")
    except Exception as e:
        print(e)
        lcd.displayStr(studentid.decode("utf-8"), "Error (File IO?)")

idr = IDReader(printid)

lcd.displayStr("Program started", "waiting...")
while True:
    try:
        idr.read()
    except Exception as e:
        print(e)
        lcd.displayStr("", "Error (Felica?)")

idreader.py

#!/usr/bin/env python2

import nfc

class IDReader:
    callback = None

    def __init__(self, cbfunc):
        self.callback = cbfunc

    def on_connect(self, tag):
        try:
            sc1 = nfc.tag.tt3.ServiceCode(4, 0x010B)
            bc1 = nfc.tag.tt3.BlockCode(0, service=0)
            data = tag.read_without_encryption([sc1], [bc1])
            studentid = data[3:10]
            bc1 = nfc.tag.tt3.BlockCode(1, service=0)
            data = tag.read_without_encryption([sc1], [bc1])
            afrom = data[0:8]
            ato = data[8:16]
            self.callback(studentid, afrom, ato)
        except nfc.tag.TagCommandError as e:
            print("NFC tag read error")

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

Pipfile

[[source]]
url = "https://pypi.org/simple"
verify_ssl = true
name = "pypi"

[packages]
nfcpy = "*"
pip = "==18.0"
"smbus2" = "*"

[dev-packages]

[requires]
python_version = "2.7"

Pipfile.lock

{
    "_meta": {
        "hash": {
            "sha256": "c22288f445483a1954f066a0361ae09dc75d358e131f0eb8d85fd6a5853f8042"
        },
        "pipfile-spec": 6,
        "requires": {
            "python_version": "2.7"
        },
        "sources": [
            {
                "name": "pypi",
                "url": "https://pypi.org/simple",
                "verify_ssl": true
            }
        ]
    },
    "default": {
        "libusb1": {
            "hashes": [
                "sha256:9d4f66d2ed699986b06bc3082cd262101cb26af7a76a34bd15b7eb56cba37e0f"
            ],
            "version": "==1.7"
        },
        "ndeflib": {
            "hashes": [
                "sha256:4a9d8733e22a28bc26d444f5eb3f6ab499a268c47fba5786cdc3489b3835f65a",
                "sha256:ef4e139a0ee8c8379b75809d70e49d295cd28ad40aeed4a9d6ec3bff618d7c95"
            ],
            "version": "==0.3.2"
        },
        "nfcpy": {
            "hashes": [
                "sha256:188943c97c1b008172bf44720129bc39ccfece42a7c75030ac4ba5f7027f37b2",
                "sha256:b6107a70d78ea41135e64f5bde7b2afccb43e65328bfaa752072f4485dea0b6e"
            ],
            "index": "pypi",
            "version": "==0.13.5"
        },
        "pydes": {
            "hashes": [
                "sha256:e2ab8e21d2b83e90d90dbfdcb6fb8ac0000b813238b7ecaede04f8435c389012"
            ],
            "version": "==2.0.1"
        },
        "pyserial": {
            "hashes": [
                "sha256:6e2d401fdee0eab996cf734e67773a0143b932772ca8b42451440cfed942c627",
                "sha256:e0770fadba80c31013896c7e6ef703f72e7834965954a78e71a3049488d4d7d8"
            ],
            "version": "==3.4"
        },
        "smbus2": {
            "hashes": [
                "sha256:4d5aae2f65d39056bb44e8906d5c503f8ee7e02fadb0a6433f1091a9ce528dde"
            ],
            "index": "pypi",
            "version": "==0.2.3"
        }
    },
    "develop": {}
}

studentid.service

[Unit]
Description=studentid script

[Service]
User=digicre
WorkingDirectory=/studentid
ExecStart=/usr/local/bin/pipenv run ./getstudentid.py
EnvironmentFile=/etc/environment
Type=simple
Restart=always

[Install]
WantedBy=multi-user.target