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