FFT程序，基于verilog

一个 ；通用异步接收器/发送器UART，简称 ； ；/ˈ居ːɑːRT /，是 ；计算机硬件 ；设备之间的数据并行转换 ； ；和 ；serialfo

它是为使用多个波纹的常规结构的 16 位进行选择加法器 verilog 代码执行加法器和多路复用器

EDA 正弦信号发生器：正弦信号发生器的结构有四部分组成，如图1所示。20MHZ经锁相环PLL20输出一路倍频的32MHZ片内时钟,16位计数器或分频器CNT6，6位计数器或地址发生器CN6，正弦波数据存储器data_rom。另外还需D/A0832（图中未画出）将数字信号转化为模拟信号。此设计中利用锁相环PLL20输入频率为20MHZ的时钟，输出一路分频的频率为32MHZ的片内时钟，与直接来自外部的时钟相比，这种片内时钟可以减少时钟延时和时钟变形，以减少片外干扰 还可以改善时钟的建立时间和保持时间，是系统稳定工作的保证。CNT6用来将32MHZ进行8分频得到4096HZ的频率提供给CN6与data_rom时钟信号。由CLK端输入20MHZ的时钟信号，在DOUT端就可输出稳定的正弦信号。(Sine signal generator has the structure of four parts, as shown in figure 1 below. The 20 MHZ phase lock loop PLL20 output all the way of frequency doubled within 32 MHZ slice clock, 16 counter or prescaler CNT6, six counter or address generator CN6, sine data storage data_rom. In addition to D/A0832 (shown in not draw) will digital signal into analog signals. This design using the phase lock loop PLL20 input frequency for 20 MHZ clock, the output of the frequency of all points frequency of 32 pieces (MHZ clock, and comes directly from the external clock, compared to this piece of clock can reduce the clock in delay and clock deformation, to reduce the interference of Can also improve the establishment of the clock time and keep time, is the system stability of assurance. CNT6 used to will and to 8 MHZ get 4096 HZ dividing the frequency to provide CN6 and data_rom clock signal. The input by CLK 20 MHZ clock signal, in DOUT end can output stable sine signals. )

The PID controller IP core performs digital proportional–integral–derivative controller (PID controller) algorithm. The algorithm first calculates the error between a measured value (PV) and its ideal value (SP), then use the error as an argument to calculate the manipulate value(MV). The MV will adjust the process to minimize the error. It can be used to calculate duty cycle for PWM (Pulse Width Modulation).

说明：  假设每个从设备中有可访问APB寄存器16个，位宽均为32比特，16个寄存器的访问地址计算方式为 基址 +　寄存器编号左移２位（byte 偏移）(Assuming that there are 16 accessible APB registers in each slave device, the bit width is 32 bits, and the access address of 16 registers is calculated by base address + register number left shift 2 bits (byte offset).)

基于System Generator的图像处理工程,多媒体处理FPGA实现的源码,基于视频的运动检测(System Generator based image processing engineering, multimedia processing on FPGA source code, based on video motion detection)

自适应滤波器算法LMS ，的FPGA实现，采用VERILOG实现。(LMS, an adaptive filter algorithm, is implemented on FPGA and VERILOG.)

FPGA与DAC芯片的SPI接口驱动，实现串行数据的传输。(Realizing the communication between FPGA and DA chip)

一个在CPLD，EPM70128上实现的PWM控制源程序。(A CPLD, EPM70128 realize the PWM control on the source.)

用于生成adams或recurdyn所需的路面不平度，用于悬架或其他的仿真(Adams or recurdyn used to generate the required road roughness for suspension or other simulation)