UART的FPGA实现方式

说明：  数字钟通过verilog实现，并且支持Modelsim仿真(The digital clock is implemented by Verilog and supports Modelsim simulation)

这是一本FPGA仿真验证的经典丛书，可以从中学习到如何编写系统的testbench,也可以是IC设计中FPGA原型验证编写系统及testbench的经典书籍。((Kluwer) Writing Testbenches Functional Verification of HDL Models.pdf)

design and implement a digital system on the Altera NIOS board which will read an analogue input using MicroChip’s SPI MCP3202 12-Bit A/D converter. The 8 most significant bits of the converted data will be displayed on two seven segments of the NIOS development board. The sampling frequency is 20kHZ. Use a potentiometer.(design and implement a digital system on the Altera NIOS board which will read an analogue input using MicroChip' s SPI MCP3202 12-Bit A/D converter. The 8 most significant bits of the converted data will be displayed on two seven segments of the NIOS development board . The sampling frequency is 20kHZ. Use a potentiometer.)

本源码为Nios II的开发示例,主要演示基于Nios II的uCOS的移植。开发环境QuartusII。 本示例十分经典，对基于SOPC开发的FPGA初学者有很大帮助。(The source code for the Nios II development of examples, mainly based on the Nios II shows the uCOS transplant. Development environment QuartusII. This example is very classic, FPGA-based SOPC development of great help for beginners.)

超声波测距代码参考了网上的，数码管自己写的，我的是50mHz的晶振，测距不准可以自己修改一下。大佬勿喷。

在BASYS3上实现跑马灯的功能。第一LED交替闪烁；第二LED由左至右逐个变亮，再逐个变暗；第三LED由右至左逐个变亮，再逐个变暗；第四LED由两边逐个变亮，再从中间逐个变暗。(Realize the function of the horse light on BASYS3. The first LED flashes alternately; second LED brightens from left to right and then darkens one by one; the third LED turns from right to left, then darkens one by one, and then darkens one by one; fourth LED is brightened by both sides, and then darkening from the middle.)

异步串行传输的verilog hdl 功能文件以及测试文件(The verilog hdl source and the testbench of asynchronous serial transmission )

该程序描述了运用FPGA 实现DDA圆弧插补运算(FPGA DDA)

说明：  VHDL BISS,SSI,ENDAT2.2, ENCODER

说明：  利用stm32F407实现的等精度测频，可以精确测量频率，误差很小(The equal precision frequency measurement realized by stm32F407 can accurately measure frequency with little error.)