fpga VHDL语言，控制DDS产生频率可变的正弦波信号扫频

基于赛林思FPGA芯片， 控制采集芯片AD9226的程序(FPGA control AD9226 program)

本程序是锁相环的仿真程序，具有接收端载波同步的功能。注释详尽，程序规范。发端的调制方式有单载波调制，BPSK调制，QPSK调制可供选择。程序中有星座图，锁相环的频差、相差图，以及解调后的基带波形。(This program is a phase-locked loop simulation program, the with carrier synchronization receiving end function. Notes detailed program specifications. The originator of the modulation scheme to choose a single carrier modulation, BPSK modulation, QPSK modulation. Program constellation diagram, the PLL frequency difference, a difference of FIG, and the demodulated baseband waveform.)

说明：  A low pass filter module based on FPGA, easy to transplant

xilinx ddr3最新VHDL代码,通过调试(xilinx ddr3 latest VHDL code through debugging)

interruption routine for PIC16F877

串口模块程序，可以实现串行发送和接收功能，比特率可以不断调整，数据的长度是可以改变的-Serial port module program, you can achieve the serial send and receive functions, and bit rate can be continuously adjusted, the data length can be changed

quartus一个完整的设计例子,从安装到实例完成，仿真等全过程，适合从0开始的初学者-Quartus a complete design examples, examples from installation to completion, the entire process of simulation, etc., suitable for the beginner to start from 0

代码文件夹： ARVI_FSM.v为顶层文件，用于模拟时用。 dataHex.dat 为模拟输入文件（只有10行，象征的意思。实际我们模拟时，dataHex.dat文件足有1个多GB） dataFormat.dat为输入文件对应的带格式的文件 使用modelsim模拟时，将dataHex.dat名字改为CPUContext.txt 结果: result.txt (Code folder: ARVI_FSM.v for top-level documents used for the simulation. dataHex.dat for analog input files (only 10 line, the meaning of the symbol. actual simulation we, dataHex.dat documents have more than one full GB) dataFormat.dat for the input file the corresponding file with modelsim simulation used to dataHex.dat name to CPUContext.txt results: result.txt)

基于EDA技术中的对LED扫描电路的实验，程序能成功运行，能直接在开发板上看实验结果(EDA-based LED technology to scan the experimental circuit, the program can run successfully, can see directly in the development of on-board results)

verilog编写的基于CA算法的m序列发生器，其中验证了多种CA系数来实现m序列。(CA-based algorithm written in verilog m-sequence generator, which verify the CA factor to achieve a variety of m-sequence.)