MIFARE MFRC522 RFID with Explore M3 Revision as of 20:31, 18 June 2016 by Sandeep (Talk | contribs) (diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

MFRC5C522 is a combined reader and writer for RFID tags that comply with ISO/IEC 14443 like A/MIFARE and NTAG. The commonly available inexpensive boards have an SPI interface, we will make it talk with Explore M3 in this tutorial.

Hookup

The default SPI interface for Explore M3 is mapped to SPI1 of the controller. It simply means whenever you're interfacing an SPI device you used use these pins and functions like SPI.begin() will use these pins.

Explore M3	MFRC522 Breakout	Description
10	MOSI	Master Out Slave In
11	MISO	Master In Slave Out
12	SCK	Serial Clock
13	SDA	This is wrongly labelled, this should have been SS
5	RESET	SPI reset signal

Demo