SPI模块设计

说明：  QUARTUS2 16.9 VHDL FPGA ENDAT2.2

利用matlab提供的firhalfban函数设计阶数为16、通阻带容限为0.0001的半带滤波器。仿真测试滤波前后的信号时域图，回执滤波器的频率响应特性图(Provided firhalfban function using matlab design order of 16, through the 0.0001 stopband wool half-band filter. Simulation test filtered time domain signal before and after, receipt filter frequency response characteristic diagram)

本程序主要是实现xinlinx fpga与dsp之间的双工通信(This program is to achieve duplex communication between xilinx fpga and dsp)

说明：  用三个按键控制pwm输出 key0控制是选着显示/改变频率或占空比 key1控制增加 key2控制减少 数码管显示频率或占空比 频率单位默认Hz（500-20KHz） 占空比范围（0.1-0.9）(Control PWM output with three keys Key0 controls display/change frequency or duty cycle optionally Key1 controls the increase Key2 controls are reduced Digital tube display frequency or duty ratio Frequency unit default Hz (500-20khz) Duty cycle range (0.1-0.9))

led学习控制l44444444444444(led verilog led ccccccc)

自己写的一个tcd1209d的时序驱动代码，是用verilog语言编写的，可以借鉴(Of write a tcd1209d of timing-driven code, Verilog language, can learn from)

Nonlinear discrete system identification, It uses a pulse of consumer law, Partial least squares method.

利用FPGA，产生三相SPWM波，与后继硬件电路配合，形成三相电源。高效，实用。(Using FPGA, produce three-phase SPWM wave, with subsequent hardware circuit with the formation of three-phase power. Efficient and practical.)

使用verliog实现ps2键盘接口的驱动，通过altera cyclone 第四代验证通过(Use verliog implement ps2 keyboard interface driven by a fourth-generation verified by altera cyclone)

说明：  对delta sigma进行设计，实现delta sigma ADC的设计(this is use for delta sigma adc ,and design and achieve adc)