Based On The Indy R2000 Multi-protocol Uhf Rfid Read-write Device System Firmware Design And Implementation

With the popularization of IOT(Internet of Things), RFID technology is quickly occupying the market with advantage of fast recognition, large storage capacity and data security, greatly broaden the application areas after the integration of emerging technologies such as NFC, ZigBee, gradually form a large-scale production, is improving the quality of people’s lives, raise the economic efficiency of enterprises and enhance the level of social information. According to statistics of China RFID Alliance, the cost of tags and readers continues to decline year by year, what leads to its market depressed, software and integrated systerms increasingly prominent market pospects.As to the situation for coexistence of standards,the paper designs a Firmware running on AT91SAM7S256, which supports the multi-protocol tags and achieves the function that quickly identifies ISO/IEC28000-6B/6C tags.First of all, by means of much analysis and research on RFID technology, leading to the Demand analysis and research content of this project. On seting up the overall framework of the RFID reader project,this paper focuses on analysis the software architecture and software of the RFID reader.Then,according to the function module of the software,it will be divided into initialization module, command waiting and analyzing module, RF transceiver module, protocol implementation module, and APIs of the chip which provided by the chip manufacturers,then the formulae of each module of the software design process are analyzed, and write the code to complete function module debuging.Finally, with the aid of the IAR development tools and serial port,the executable file would be written to the flash of the ARM7chip,the debugging job of the software modules is also completed by observating the launch of the RF spectrum and modulating waveforms,After that,the RFID library on Windows platform would be completed,and debugging the HOST application with the whole RFID software system.