Daily Archive: July 13, 2014

RFID 50

Library 23- Read RFID tag with MF RC522 on STM32F4

In this library I’m talking about RFID (Radio-Frequency IDentification). Radio-frequency identification (RFID) is the wireless non-contact use of radio-frequency electromagnetic fields to transfer data, for the purposes of automatically identifying and tracking tags attached to objects. The tags contain electronically stored information. Some tags are powered by and read at short ranges (a few meters) via magnetic fields (electromagnetic induction). Others use a local power source such as a battery, or else have no battery but collect energy from the interrogating EM field,...