RFID interfacing with PSOC 5LP | Cypress Semiconductor
RFID interfacing with PSOC 5LP
I am currently working on a project that involves 2 RFID readers to be interfaced with a PSOC 5LP. I am using a HF RFID reader, i.e , it works at 13.56MHz. The aim of the project is to track the last known of any object in a house or building. This is achieved by placing an RFID reader at the entrance of a door and when the object attached with the RFID tag is taken through, it reports to the PSOC, which transfers the data on the tag along with a time stamp to a hyperterminal on a PC.
I need help for:
1)The current range of RC522 RFID is around 3CM( a passive RFID). I need to improve the range of the RFID to at least 2m. Should I use a signal repeater or should I opt for a UHF reader?
2) How to interface multiple devices to the PSOC using same protocol and how should I handle priorities? The reader supports I2C, SPI and UART protocols.
3) Time Stamping; Should I go for an internal timer or external clock?