These instructions will show you how to configure a Joy-IT RFID RC522 module on a Raspberry Pi running on CentOS 7.
This module is a cheap RFID reader which I use as access control system.
First of all, have a look at the official documentation. It will show you how to wire up the module onto your Raspberry Pi. Next, prepare your Raspberry:
# The next line enables the Raspberry's on-board SPI interface.
cat >> /boot/config.txt << EOF
dtparam=spi=on
dtoverlay=spi-bcm2708
EOF
reboot
# Now, install all required software
yum install -y git python-devel
cd /tmp
curl "https://bootstrap.pypa.io/get-pip.py" -o "get-pip.py"
python get-pip.py
pip install RPi.GPIO
mkdir -p ~/git
cd ~/git
# Install the SPI extension for Python
git clone https://github.com/lthiery/SPI-Py.git
cd SPI-Py
python setup.py install
# Get the RC522 sample code
cd ~/git
git clone https://github.com/mxgxw/MFRC522-python.git
cd MFRC522-python
#Now you can use Read.py and Write.py as template for your own development.
python Read.py # continuously reads a tag.
python Write.py # writes specified data to a tag.