FPGA 分频器

FPGA上的VERILOG语言编程。通过查找表实现直接数字频率合成。在主控部分通过键盘选择正弦波，方波，三角波，斜波，以及四种波形的任意两种的叠加，以及四种波形的叠加；通过控制频率控制字C的大小，以控制输出波形频率，实现1Hz的微调；通过地址变换实现波形相位256级可调；通过DAC0832使波形幅值256级可调；通过FPGA内部RAM实现波形存储回放；并实现了每秒100HZ扫频。(FPGA on the verilog language programming. Lookup table through direct digital frequency synthesis. In part through the control of the keyboard to choose sine, square, triangle wave, sloping wave, and four arbitrary waveform two superposed and the stack of four waveform; by controlling the frequency control word on the size, in order to control the output waveform frequency, 1 Hz to achieve the fine-tuning; Address transform through waveform phase adjustable 256; DAC0832 so through waveform amplitude adjustable 256; FPGA through internal RAM to the waveform storage intervals; and achieve a 100 per second sweep 9999.)

FPGA与HDMI ADV7511接口源代码(FPGA HDMI Adv7511 interface)

This is the Spartan 3E tutorial_02.

对ad0809的控制代码( ad0809control)

本代码用verilog语言配合sopc和nios实现了串口调试的目的。软件编程用C语言描述，只是比较简单的例子，适合初学者做了解用，本人亲自在EP2C8Q上实践。(The code to use verilog language sopc and nios achieved with serial debugging purposes. Software programming using C language description, but relatively simple example for beginners to do with understanding, I personally EP2C8Q on practice.)

实现7位数码管的显示，可以优先解决用户很多问题，不懂得可以问我，不用客气，7位数码管的显示很简单的

8位并行输入的数转换成串行输出，是基于高级硬件编程语言VHDL编写的。(8-bit parallel input into serial output digital conversion is based on the high-level hardware programming language VHDL prepared.)

实现快速傅里叶变化基-2下的256点DIT-FFT(The 256 point didit -FFT is implemented in the fast Fourier transform base -2.)

spartan 3E和verilog HDL的初学者极好的教材，本程序可直接下载到spartan实验板上运行。(Spartan 3E and Verilog HDL beginners excellent materials, the program can be downloaded directly to the spartan experimental board run.)

模块 ac_con (输出 heater_on、 cooler_on、 fan_on、 输入的 temp_low、 emp_high、 auto_temp、 manual_heat、 manual_cool、 manual_fan） ； 分配 heater_on = (temp_low & auto_temp) |manual_heat ； 分配 cooler_on = (temp_high & auto_temp) |manual_cool ； 分配 fan_on = (加热器上 | cooler_on | manual_fan; endmodule