Abstract

Use case scenario for demonstrator application: Student access to venues. The aim was to provide better support for the CR95HF’s use for the Raspberry Pi in Python3, via an API. A demonstrator application was created for showing the uses of the API for an access control use case: https://github.com/IanEdwards99/CR95HF_Demo_App

Features

• USB Connect

• Protocol Select

• Send Receive

• ResetSPI

• Field Off

• Send IRQ Pulse

• Send NSS Pulse

• STCmd Command

• Initiate

• ResetToReady

• MCUrev

• Echo

• Idn (Get ID number of CR95HF module)

• GetPinInterfaceState

• Reading from NFC tag

• Writing to NFC tag

• IDLE for tag

• Scan and Write

• Tag detection and hunting

• Clearing NFC tag

• Read entire contents of all registers from tag

• Extract payload

• Prepare for writing and reading with dec/hex/string conversion functions.

Installation

pip install the file from PyUp, or clone this git repo and “make install”. It is important to install 3 dependancies to use the CR95HF with its C library and development board:

• “sudo apt-get install build-essential”

• “sudo apt-get install g++”

• “sudo apt-get install libusb-1.0-0-dev”

• Navigate to ./nfcreader/nfcreader/src and run “make” to compile a libCR95HF.so file for your current architecture.

Lastly, add libCR95HF.so, found in the src folder, to your environment variable. If your program still fails, copy it to your /lib and /usr/lib folders in your root directory.

Credits

This package was created with Cookiecutter and the audreyr/cookiecutter-pypackage project template.

0.1.0 (2020-09-15)

• First release on PyPI.