超声波测距

说明：  stepper motor module on spartan 6 and 24MHz clock fequency

walsh码，在CDMA系统中经常使用到的方法，在quartusII环境下实现的。(walsh code in the CDMA system, the method often used in quartusII environment to achieve.)

运用quartus 软件模拟的电子琴，实现按键出现不同音调的音乐。(Quartus software simulation using keyboard, keys appear to achieve different tones of music.)

说明：  HDMI做为视频输出输入接口已经广泛使用很长时间，主要通过TMDS差分编码传输。本实验通过在HDMI屏幕上显示彩条和输入输出环通实验，来练习视频的时序和视频颜色的表示，为后面视频处理实验做个基础。(HDMI as video output input interface has been widely used for a long time, mainly through TMDS differential coding transmission. In this experiment, by displaying color bars and input/output loop experiments on HDMI screen, video timing sequence and video color representation are practiced to lay a foundation for video processing experiments later)

lattice ECP3系列高速FPGA serdes测试代码(lattice ECP3 series high speed serdes test code)

Z源逆变器简单升压模拟仿真。调制方式为SPWM，通过设置三角波幅值和比较电压，即可调节输出电压。(Z-source inverter simple step-up simulation. Modulation mode SPWM, by setting the the triangle amplitude and the comparison voltage to regulate the output voltage.)

基于FPGA的SD卡音频播放器 经过调试可以直接用，音质很好有MP3的所有功能(FPGA-based audio player, SD card can be directly used after debugging, good sound quality with all the features of MP3)

实现千兆以太网数据发送，通过GMII接口向PHY写数据，控制PHY发送数据。(Implementation of Gigabit Ethernet data transmission, write data to the PHY through the GMII interface, control PHY data.)

利用IIC接口的4路 ADC max1037，采集思路信号，通过在FPGA内部的构建DeltaSigma DAC软核，在VGA液晶显示屏上显示波形。 (IIC interface 4-way ADC max1037, collecting ideas signal the FPGA internal build DeltaSigma DAC soft-core VGA LCD display waveforms.)

基于状态机的优秀SPI输出程序（以DAC7512为基础，可修改）(VHDL code about SPI)