一个开源的rfid middleware 资料，给大家推荐

电子标签防碰撞是RFID 系统中一个关键问题。在射频识别系统中．当阅读器作用范围内有多个标签同时向阅读器发送数据时，会产生冲突，必须采用一种防碰撞算法解决这种冲突。在分析典型的二进制及动态二进制防碰撞算法基础上，采用了一种新的防碰撞算法。经实验证明，该算法能有效解决射频识别系统中多目标识别的防碰撞问题。(Tag anti-collision RFID system is a key issue. In the radio frequency identification systems. When the reader within the framework of the role of multiple tags simultaneously send data to the reader, it will create conflict, you must use a anti-collision algorithm to solve such conflicts. In the analysis of a typical binary and dynamic anti-collision algorithm based on the binary, using a new anti-collision algorithm. The experiments show that the algorithm can effectively solve the radio frequency identification system, multi-target recognition of the anti-collision problem.)

Vitesse 24port gigabit Switch Source Code

STM32F1系列属于中低端的32位ARM微控制器，该系列芯片是意法半导体(ST)公司出品，其内核是Cortex-M3。 该系列芯片按片内Flash的大小可分为三大类:小容量(16K和32K)、中容量(64K和128K)、大容量(256K、384K和512K)。 芯片集成定时器，CAN，ADC，SPI，I2C，USB，UART，等多种功能。

soft for RC522+ST8 UART

RFID定位算法 基于RFID的室内定位(RFID system)

维格纳-威尔分布三维图面图，跳频信号的stft，跳频信号的维格纳-威尔分布的频谱图(Wigner- Will the distribution of three-dimensional surface maps, frequency hopping signal stft, frequency hopping signal Wigner- Will the distribution of spectrum)

说明：  ID卡读写卡器程序，支持ID门卡卡号的读取和写入(ID Card reader writer)

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超高频无源RFID 标签的一些关键电路的设计-Passive UHF RFID labels some of the key circuit design

UHF读写器读写器简介 本产品具有多协议兼容、体积小、读取速率快、多标签识读、圆极化天线对标签没有方向限制、防水型外观设计等优点，可广泛的应用于各种RFID系统中，典型的应用场合有：  (UHF reader reader Introduction The product is compatible with multi-protocol, small volume, read rate, and multi-tag read, circularly polarized antenna on the label does not limit the direction, waterproof design, etc., can be widely used in a variety of RFID systems, typical applications are:  )