User Manual

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User Manual for RC522 RFID Reader Module

RC522 RFID Reader Module uses the Serial Peripheral Interface (SPI) bus to communicate with controllers

such as Arduino, Raspberry Pi, beagleboard, etc. This manual is only about how to apply the RC522 RFID

Reader Module on Raspberry Pi.

Step 1. Enable the SPI on Raspberry Pi

Since the SPI is not enabled by default, you need to edit the raspi-blacklsit.conf in order to enable the SPI

interface. According to the comment in the file most users are not interested in it, so it has been blacklisted.

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User Manual for RC522 RFID Reader Module RC522 RFID Reader Module uses the Serial Peripheral Interface (SPI) bus to communicate with controllers such as Arduino, Raspberry Pi, beagleboard, etc. This manual is only about how to apply the RC522 RFID Reader Module on Raspberry Pi. Step 1. Enable the SPI on Raspberry Pi Since the SPI is not enabled by default, you need to edit the raspi-blacklsit.conf in order to enable the SPI interface.
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$ sudo vim /etc/modprobe.d/raspi-blacklist.conf Add '#' at the beginning of the line spi-bcm2708 to comment it out of the blacklist. Save the file, and reboot the Raspberry Pi: $ sudo reboot After rebooting the Raspberry Pi, type in the command lsmod and you can see the spi device driver (spi_bcm2708) is enabled. Then, two device files, /dev/spidev0.0 and /dev/spidev0.
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Step 3. SPI Code To test the module in Python, you need to load a SPI wrapper. Before that, you need to install python-dev. Install python-dev: $ sudo apt-get install python-dev In order to read data from the SPI bus in Python, you need a set of routines; a suitable one is SPI-Py, which is available at github. To install it, clone the git repository SPI-Py. This is the source code for the SPI python library to be used. $ git clone https://github.com/adeept/SPI-Py.