对乒乓球比赛FPGA代码

基于VHDl的2FSK调制！用的是altera的quartus11软件(Based on VHDl the 2FSK modulation)

quartus ii 中自动分配管脚的三种方法(quartus ii automatically assign pins are three ways)

设计一个十进制计数器，具有显示位置随计数时钟在八个数码管中左右滚动的功能。(Design of a decimal counter, a display position with the count clock in at around eight digital scrolling function.)

通过verilog语言实现各种基本信号的调制解调过程，包括2psk,qpsk,ppm(Realize the modulation and demodulation process of various basic signals through verilog language, including 2psk, qpsk, ppm)

本模块的功能是验证实现和PC机进行基本的串口通信的功能。需要在PC机上安装一个串口调试工具来验证程序的功能。程序实现了一个收发一帧10个bit（即无奇偶校验位）的串口控 //制器，10个bit是1位起始位，8个数据位，1个结束 //位。串口的波特律由程序中定义的div_par参数决定，更改该参数可以实 //现相应的波特率。程序当前设定的div_par 的值是0x145，对应的波特率是 //9600。用一个8倍波特率的时钟将发送或接受每一位bit的周期时间 //划分为8个时隙以使通信同步. //程序的工作过程是：串口处于全双工工作状态，按动key1，FPGA向PC发送“21 EDA" //字符串（串口调试工具设成按ASCII码接受方式）；PC可随时向FPGA发送0-F的十六进制 //数据，FPGA接受后显示在7段数码管上。 //视频教程适合我们21EDA电子的所有学习板(this is a base vhdl for uart progarm.)

说明：  为串口收发器以及汉明编码，将电脑通过串口发送的7位数据转化成汉明码显示于led上，或把接收到的11位汉明码解码并验错纠错(For the serial port transceiver, and Hamming codes, the computer through the serial port into 7-bit data displayed on the led on the Hamming code, or to receive the 11 Hamming code error correction decoding and experience)

--author: Suntion Tang --date: 2008-6-7 -- two warning --modify: By Suntion Tang at 2008-6-14 --description: 顶层文件，由于此系统简单， -- 且底层文件不多，故放弃原理图描述，采用VHDL语言描述-author: Suntion Tang date: 2008-6-7 two warning modify: By Suntion Tang at 2008-6-14 description: the top-level documents, as a result of this system is simple, and not more than the bottom of a document, they give up the schematic description of the use of VHDL language description

verilog，FPGA的TDC电路设计(verilog ，TDC base on FPGA)

DDS在现在运用月来越广泛，在相对带宽、频率转换时间、相位连续性、正交输出、高分辨力以及集成化等方面都远远超过了传统频率合成技术所能达到的水平，为系统提供了优于模拟信号源的性能。利用DDS技术可以很方便地实现多种信号。在FPGA上实现的DDS-DDS now to the use of more extensive relative bandwidth, frequency conversion time, phase continuity, quadrature output, high-resolution and integration, and other aspects far more than the traditional frequency synthesizer technology can achieve the level To provide a superior analog signal source performance. DDS technology can be used very easily to a variety of signal. FPGA Implementation of DDS

一种基于LUT的预失真方法。其中的一部分，有参考价值。-one method of DPD based on LUT