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FFT的VHDL源代码-fft vhdl source code

bch 编码和译码，用硬件语言vhdl实现(bch edcode and decoder)

说明：  1、能正确显示输入信号频率； 2、测量频率范围为1Hz ~ 999999Hz； 3、测量结果以十进制数字显示； 4、能测量幅值较小的信号频率； 5、有自动刷新输出数据的功能（如5s刷新一次）； 6、有自检模块（如产生100Hz的校准方波）；(1. It can correctly display the input signal frequency; 2. The frequency range of measurement is 1Hz ~ 99999hz; 3. The measurement results are displayed in decimal; 4. It can measure signal frequency with small amplitude; 5. It has the function of automatically refreshing the output data (e.g. once in 5S); 6. Self checking module (such as generating 100Hz calibration square wave);)

说明：  在FPGA实验操作系统实现ASK,FSK,PSK的调制解调，基带信号由M序列发生器产生，经过AD模块在示波器上进行显示，精油DA模块在同一块实验板上进行解调操作，生成信号控制LED灯的亮灭，并与调制输出信号在示波器上同时展示，并进行对比。基带信号为3MHz。(In the FPGA operating system experiment implementation ASK, FSK, PSK modulation and demodulation of the baseband signal generated by the M sequence generator, through the AD module on the oscilloscope display module, oil DA demodulation operation in the same block experiment board, the signal generation control LED lights off, and the modulated output signal displayed on the oscilloscope at the same time, and compared.)

VHDL 波形防止抖动程序,学习试验材料(VHDL prevent jitter waveform procedures, the pilot study materials)

用于数字积分器的设计，主要涉及VHDL、Verilog等FPGA编程语言。(Design of Digital Integrator)

压缩包是ti xds100v3 Design kit的安装文件，安装后有原理图、PCB文件，与DSP接口采用FPGA，安装后有源码，是VHDL格式的，支持开源，降低开发成本(Compression package is ti xds100v3 Design kit installation file after installation schematics, PCB files, and DSP interface with FPGA, after installation source is VHDL formats, support for open source, reduce development costs)

里面是VHDL的一些例子，大家可以看一下，蛮不错的，对大家提高VHDL水平很好的.-There is some examples of VHDL, we can look pretty good on the U.S. improve the level VHDL good.

veilog 代码 用户可以直接调用，作为底层模块。同时已经编译成功，可以作为基本单元库。-veilog code user can derict use it for the base mode.

uart documentation, july 17, 2019. the document describes the basics of verilog programming and how to implement them on an fpga device