serial port simulated programme of lattice

步进电机驱动，32等级速度，带加减速度控制。verilog编写。(step motor driver,32 level speed.)

初学学习verilog的经验，可以帮助新手以正确的思维方式，学习方法学习。(Verilog learning experience)

密码锁verilog源代码，包括四个七段数码管显示模块，设置密码以及输入密码校验模块(Password lock Verilog source code, including four of seven digital tube display module, set the password and password verification module)

用Verilog HDL语言编写的AT24C04程序，并用数码管显示，已经过测试，很好用-With the Verilog HDL language of the AT24C04 procedures and use digital tube display, has been tested, very good to use--

通信中常用的PN序列产生器的源代码全部打包(Communications commonly used in PN sequence generator, the source code of all packaged)

利用康芯公司的FPGA芯片设计制作频率计，实现对频率的测量。(Kang core using FPGA chip design company frequency meter, realize the frequency measurements.)

verilog编程语言的讲解，有电子科技大学出版(verilog programming language to explain, there is the University of Electronic Science and Technology Publishing)

de2_clock on altera de2 board

说明：  Verilog简易教程，或者说是讲义，清晰易懂，适合初学者入门使用(Layman' s Guide to Verilog, or a lecture, legible entry to use for beginners)

? 熟悉IIC协议总线协议，采用IIC总线对图像采集传感器寄存器进行配置，并转换为RGB565格式。 ? 利用异步FIFO完成从摄像头输出端到SDRAM 和SDRAM 到VGA 接口各跨时钟域信号的传输和处理。 ? 利用 SDRAM 接口模块的设计，实现了刷新、读写等操作；为提高SDRAM 的读写带宽，均采用突发连续读写数据方式；并采用乒乓操作实现 CMOS 摄像头与VGA的帧率匹配。 ? 利用双线性插值方法实现对图像640×480到1024×768的放大操作。 ? 完成VGA显示接口设计。(Familiar with IIC protocol bus protocol, IIC bus is used to configure the register of image acquisition sensor and convert it into RGB565 format. Asynchronous FIFO is used to transmit and process signals across clock domain from camera output to SDRAM and SDRAM to VGA interface. With the design of SDRAM interface module, refresh, read and write operations are realized. In order to improve the read and write bandwidth of SDRAM, burst continuous read and write data mode is adopted, and table tennis operation is used to achieve frame rate matching between CMOS camera and VGA. The bilinear interpolation method is used to enlarge the image from 640*480 to 1024*768. Complete the VGA display interface design.)