嵌入式RFID终端读写器设计，基于嵌入式系统平台开发的，在Linux操作系统环境下编写程序代码，控制射频卡硬件扩展模块，进行IC卡读写操作的测试- based on embedded system design platform, in the Linux operating system environment, programming code, controlling the hardware expansion module of the radio frequency card for IC card reading and writing tests