5.2.10 EPC Module
The EPC software module is entirely implemented on the DSP. It is based on
EPC speci?¬?cations and supports both EPC Class 0 and Class 1 protocols as well as ISO
18000??“6 protocols. It is also designed to accommodate Generation 2 protocol by EPC
Global (C1G2) by adding some variables in function calls.
This module consists of functions for generating EPC Class 1 Generation 1 commands
such as Ping, Global Scroll, and Masked Scroll and interpreting the tag reply. It can communicate
with EPC 64 bit and 96 bit tag code structure and is capable of handling anticollision
protocols.
5.3 Conclusion
By minimizing the hardware requirements for different protocols and implementing
software modules that abstract away the differences between protocols, SDLR achieves
superior performance to most other solutions in terms of hardware cost and software
?¬‚exibility.
This possibility has motivated the concept of the SDLR, whereby the digital-to-analog
and analog-to-digital conversion are performed as close as possible to the radio frequency.
The aim of this work was to extend the digital domain and implement modulation,
demodulation, channel coding, and other required processing tasks in software.
Being software based allows the SDLR to be customized to end-user needs. This design
has a boot loader feature allowing a user to make changes to the code.
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