MFRC522-spi-i2c-uart-async

Arduino RFID Library for MFRC522 (SPI, I2C and UART) with asynchroneous callbacks. Read/Write a RFID Card or Tag using the ISO/IEC 14443A/MIFARE interface. Modified from the original miguelbalboa to also support I2C and UART connections and provide, in addition to normal constant polling, an option to do asynchroneous callbacks. I.e. have a function called each time that a valid swipe has happend. Used at the https://makerspaceleiden.nl.