基于 FPGA 的 VGA

C语言写得FIR滤波器代码，简单实用，是学习滤波器设计的好材料，附带PPT滤波器设计说明(C language written FIR filter code, simple and practical, is a good learning materials of filter design, with PPT filter design )

thesis about design and implementation neural network using FPGA

设计一简易数字频率计，其基本要求是： 1)测量频率范围0～999999Hz； 2)最大读数999999HZ,闸门信号的采样时间为1s；. 3)被测信号可以是正弦波、三角波和方波； 4)显示方式为6位十进制数显示； 5）具有超过量程报警功能。 5)输入信号最大幅值可扩展。 6）测量误差小于+-0.1%。 7)完成全部设计后，可使用EWB进行仿真，检测试验设计电路的正确性。(The basic requirements of designing a simple digital frequency meter are: 1) The measuring frequency range is 0-999999 Hz. 2) The maximum reading is 999999HZ, and the sampling time of gate signal is 1 s. 3) The measured signal can be sine wave, triangle wave and square wave. 4) The display mode is 6-bit decimal number display. 5) It has alarm function beyond range. 5) The maximum amplitude of input signal can be expanded. 6) The measurement error is less than +0.1%. 7) After completing all the design, EWB can be used to simulate and test the correctness of the circuit.)

CAN驱动器MCP2515驱动，verilog编写，实测可用(CAN driver MCP2515 driver, Verilog written, measured available)

产生高斯最小相移键控信号的阐述仿真，包括调制解调、信道模型等。(Simulation program to realize GMSK transmission system)

用Verilog硬件语言驱动TLC5615 DAC芯片,可输出方波,并且频率可调

//***********************************************************//data        : 2007-07-11 11:30:00 //version     : 1.0////module name : Mp3Decode////modification history//---------------------------------//firt finish  2006//             2007-07-11  11:30:00   //***********************************************************

说明：  FPGA接收串口UART发来的指令设定温度报警值，实时采集DS18B20温度传感器并显示，带报警功能(FPGA receives the instruction from UART, sets the temperature alarm value, collects and displays DS18B20 temperature sensor in real time, with alarm function)

The red arrow showed the output became 8 when the measured temperature changed to 11°C. As shown by black arrow, the maximum output was 28. The program was run according to the proposed method.

锁相环是通信领域最基本的元件，同时在FPGA上也有广泛的应用，本代码是锁相环PLL的Verilog HDL代码，简单易读，能够实现PLL基本的锁相、分频等功能