RFID has an RFID MFRC522 chip inside.
The MFRC522 operates in the 13.56MHz frequency band and uses the modulation and demodulation principle to interact with the proximity RF card. This unit can realize the function of the card reading and writing device, to identify and record multiple card information, to encode and authority a RF card.
It is able tp establish applications such as access control system, punching system, warehouse goods storage and community vehicle access registration.
Connect this Unit to GROVE PORTA on M5Core, I2C address is 0x28.
|Communication protocol||I2C: 0x28|
1.EasyLoader is a simple and fast program burner. Every product page in EasyLoader provides a product-related case program. It can be burned to the master through simple steps, and a series of function verification can be performed. .
|M5Core ( GROVE A )||GPIO22||GPIO21||5V||GND|
After programming the RFID.ino, the IC card or the mobile phone NFC, close to the unit, moves back and forth around the unit, and the UID of the IC card or the RFID chip in the mobile phone will be printed on the screen of the M5Core.
Identify RFID chip information
read string from addr Read data from address
write to addr Write data to address
card near RFID card close to return 1
card uid Returns the UID of the RFID card
After opening and burning this example using UIFlow , place the proximity card on the Unit surface and the screen displays “True” and the UID number of the card.