blub

NfcReaderService.py

@@ -43,7 +43,7 @@ class NfcReaderService:
 
                     if uid_hex == self._last_uid:
                         connection.disconnect()
-                        time.sleep(0.5)
+                        time.sleep(1)
                         self._last_uid = None
                         continue
 
@@ -57,7 +57,7 @@ class NfcReaderService:
                             self._last_write = now
 
                 except (CardConnectionException, NoCardException):
-                    pass
+                    time.sleep(0.5)
 
                 finally:
                     try:

README.md

@@ -4,14 +4,6 @@ This repository contains the tooling around NFC readers/writers.
 
 Currently supported NFC Device: ACR 1252U
 
-## Installation
-
-Make sure you have the apt packages `python3-dev` and `libpcsclite-dev` installed before installing the dependencies from `requirements.txt`.
-
-## Configuration
-
-The root path of the installation (next to `NfcReaderService.py`) needs to contain the `hmac_key.txt`. The correct key can be retrieved from sys admin.
-
 ## Tools:
 
 - card_reader
@@ -25,6 +17,6 @@ The root path of the installation (next to `NfcReaderService.py`) needs to conta
 ## Intended usage
 
 Start `NfcReaderService` on terminals where LAN team needs to verify guest identity, EZGG LAN manager then reads user ID from clipboard.
-`NfcReaderService` may be used as part of a systemd unit, to automate the startup process. See service file for additional info.
+`NfcReaderService` may be used as part of a systemd unit, to automate the startup process.
 
 Run `card_writer` when preparing tickets.

nfc-reader.service

@@ -1,15 +1,10 @@
-# THIS IS A USER-LEVEL SERVICE
-# ~/.config/systemd/user
-# systemctl --user daemon-reload
-# systemctl --user enable nfc-reader.service
-# systemctl --user start nfc-reader.service
-
 [Unit]
 Description=NFC Reader Service
-After=graphical-session.target
+After=network.target
 
 [Service]
 Type=simple
+User=ezgg
 WorkingDirectory=/opt/nfc
 
 ExecStart=/opt/nfc/venv/bin/python /opt/nfc/NfcReaderService.py
@@ -19,8 +14,5 @@ RestartSec=2
 
 Environment=PYTHONUNBUFFERED=1
 
-Environment=DISPLAY=:0
-Environment=XAUTHORITY=%h/.Xauthority
-
 [Install]
-WantedBy=default.target
+WantedBy=multi-user.target