FPGA控制DM9000A进行以太网数据收发的Verilog实现

与单片机相比，用CPLD/FPGA器件更适合于直接对高速AD采样控制。本实验接口器件为ADC0809，根据ADC0809的工作时序使用CPLD产生该控制信号，CPLD启动AD转换后，得到的数据送至单片机并在PC机及数码管上显示AD转换结果。(Compared with the microcontroller, CPLD/FPGA devices more suitable for direct sampling control of high-speed AD. The interface of the experimental device for the ADC0809 ADC0809 Timing CPLD is used to generate the control signal, the CPLD to start the AD conversion, the data sent to the microcontroller and the AD conversion result on the PC and digital tube display)

altera remote updata cyclone5 平台例程，无nios核版本(altera remote updata cyclone5 platform routine do not use nios)

说明：  功能是（用Verilog语言的，内有比较详细的注释）： （1）计数器的功能是从0到9999计数，并能以十进制数的形式在七段数码管上显示出来(包括七段数码管显示模块). （2）该计数器有一个1个nclr和一个adj_plus端，在控制信号的作用下（见下表），计数器具有复位、增或减计数、暂停的功能。编写以上的程序的完整模块. 计数器的功能表 nclr adj_minus 功 能 0 0 复位为0 0 1 递增计数 1 0 递减计数 1 1 暂停计数 (Function is (with Verilog language, the more detailed comments): (1) counter function is from 0 to 9999 counts, and are able to form a decimal number on the seven-segment LED display (including the seven-segment LED display module). (2) The counter has a one nclr and a adj_plus side, under the action of the control signal (see below), the counter has reset, increase or decrease of count pause function. Complete the preparation of the above program modules. Counter function menu nclr adj_minus reset 0 0 0 0 1 1 0 counts counting suspended Count 1 1)

海德汉绝对式编码器代码，VHDL语言编写(Heidenhain absolute encoder code, VHDL language)

实现基于FPGA的控制MCP2515发送的程序，本人编写通过测试，希望提供帮助(FPGA-based control program sent MCP2515, I write to pass the test, hoping to help)

说明：  使用Verilog，以Quartus II 为平台，编写了一个DDS信号发生器程序。(Using Verilog and Quartus II as the platform, realizing the DDS signal generator program .)

红外接收处理，根据外部波形记录波形的高低电平时间，从而得到波形数据。(Infrared receiver processing, according to the external waveform waveform record high and low times, resulting waveform data.)

AXI4-Lite总线的主从机读写，例程及代码(AXI4-Lite Bus Host-Slave Read-Write, Routine and Code)

用DE1_SoC实现了D5M的显示，可以通过VGA和TFT屏来显示图像，将FPGA的数据传到Nios以便用C做复杂的算法处理。

//顶层模块 //本次正弦波频率大约在750-800Hz，没有精确计算，和DA的加载时间有关 module DA_AD ( clk, rst_n, DAC_SCLK, DAC_DATA, DAC_LDAC, DAC_LOAD, ADC_SDO, ADC_SDI, ADC_SCLK, ADC_EOC, ADC_CS, ADC_FS, led1 ); input clk; input rst_n; output DAC_SCLK; output DAC_DATA; output DAC_LDAC; output DAC_LOAD; //AD相关 input ADC_SDO; //ADC转换完成输出的数据 input ADC_EOC; //ADC的转换完成输出信号 output ADC_SDI; //ADC的输入数据 output ADC_SCLK; //ADC时钟信号 output ADC_CS; //ADC片选,低有效 output ADC_FS; //DSP模式帧起始信号 output led1; wire DATA_EN; wire [7:0] Cordic2driver; wire start; TLC5620_driver ins_TLC5620_driver ( .clk(clk), .rst_n(rst_n), .DATA_IN(Cordic2driver), .DATA_EN(DATA_EN), .