RFID-RC522 WITH RASPBERRY PI

Before use RFID-RC522. Enable SPI Interface (Device Tree Overlays)

On new kernel use Device Tree Overlays.

• Edit on /boot/config.txt. (add new line)

device_tree_param=spi=on
dtoverlay=spi-bcm2708

• Edit on /etc/modprobe.d/raspi-blacklist.conf (add # (comment) on line "blacklist spi-bcm2708") 

#blacklist spi-bcm2708

• Reboot Raspberry PI

sudo shutdown -r now

• Re-Check SPI Interface software

 

$ dmesg | grep spi

[    5.408904] bcm2708_spi 20204000.spi: master is unqueued, this is deprecated
[    5.659213] bcm2708_spi 20204000.spi: SPI Controller at 0x20204000 (irq 80)

$ lsmod

spi_bcm2708             6010  0

• If you found, software is enabled.

Install Software for use RFID-RC522

• Install python-dev

sudo apt-get install python-dev

• Install SPI-Py (Hardware SPI as a C Extension for Python)

git clone https://github.com/lthiery/SPI-Py.git

cd SPI-Py

sudo python setup.py install

• Install MFRC522-python

git clone https://github.com/mxgxw/MFRC522-python.git 

cd MFRC522-python 

Install Pins between Raspberry PI and RFID-RC522

RFID-RC522 Pin	Raspberry PI Pin	Raspberry PI Pin name
SDA	24	GPIO8
SCK	23	GPIO11
MOSI	19	GPIO10
MISO	21	GPIO9
IRQ	None	None
GND	Any	Any Ground
RST	22	GPIO25
3.3V	1	3V3

You can test read card.

• sudo python Read.py

         output: -  

Welcome to the MFRC522 data read example
Press Ctrl-C to stop.

         (If touch the card, it will display.)

Welcome to the MFRC522 data read example
Press Ctrl-C to stop.
Card detected
Card read UID: XX,XX,XX,XX
Size: 8
Sector 8 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

Ctrl+C for Stop.