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使用STM32官方提供的DSP库进行FFT，虽然在使用上有些不灵活（因为它是基4的FFT，所以FFT的点数必须是4^n），但其执行效率确实非常高效，看图1所示的FFT运算效率测试数据便可见一斑。该数据来自STM32 DSP库使用文档(. Using the official DSP library provided by STM32 for FFT is not flexible in use (because it is the FFT of base 4, so the number of FFT points must be 4 ^ n), but its execution efficiency is really very efficient, as can be seen from the test data of FFT operation efficiency shown in Figure 1. This data comes from STM32 DSP library usage document)

说明：  本工程使用A7系列FPGA产生DDS，用DAC0832进行正弦电压输出(In this project, A7 series FPGA is used to generate DDS, and DAC0832 is used for sinusoidal voltage output)

利 用 来 vhdl 设 计 p cm的 实 现-Vhdl design used for the realization of p cm

AV视频信号输入后，存入SDRAM中然后在PC上面进行显示的代码。-AV video signal input into the SDRAM in the PC and then display the code above.

说明：  文档科斯塔斯环路滤波器。。。。。般若撒根本(wendangsafwrfgvearbeabf)

本例程位于 VMD642_CPLD目录中。 使用 CPLD 实现辅助译码、LED 指示灯控制、看门狗等各种逻辑控制电路。源程序使 用 Verilog HDL书写，编译开发系统使用 Cypress公司的 Warp 6.3。(This routine is located VMD642_CPLD directory. Using CPLD implementation auxiliary decoding, LED indicator control, watchdog, and other logic control circuitry. Written using Verilog HDL source code, the compiler development system using Cypress' s Warp 6.3.)

I2C总线在可编程逻辑器件上实现的VHDL源码-VHDL source codes for realizing I2C

固定的 128 点复杂 FFT 或 64/8/16 点

FPGA扫描LED显示灯，动态扫描,进行流水显示(FPGA Scan LED indicator lights, dynamic scanning, make the water show)

说明：  【实例简介】用Verilog实现uart串口协议，波特率可选9600、19200、38400、115200。8位数据为，1位校验位，1位停止位。 【实例截图】 【核心代码】核心代码包括TX，RX，Baud，FIFO([example introduction] UART serial port protocol is implemented with Verilog, and the baud rate can be 9600, 19200, 38400, 115200. 8-bit data, 1 bit check bit, 1 stop bit. [example screenshot] [core code] the core code includes TX, Rx, baud and FIFO)