ep2c5核心电路SCH

用vhdl来实现的数字频率合成的技术，几乎很全的，所有的都有 -Use VHDL to realize the digital frequency synthesis technology, almost the whole of, all have

 ；建立一个录音机，用于录制和播放8位数字音频样本。实现了一个低通FIR滤波器模块，可以用作抗混叠和重构滤波器。

说明：  本资源有一个matlab程序段，是仿真BPSK分别在高斯噪声和瑞利衰落下的误码率，产生图形对仿真值和理论值进行比较(This resource has a matlab program segment, which is the bit error rate of simulated BPSK under Gaussian noise and Rayleigh fading respectively. The generated graph compares the simulated value with the theoretical value.)

NCO 代码设计 使用VHDL语言 (nco)

FIFO的VERILOG代码编写 可综合的Verilog FIFO存储器(The VERILOG code FIFO write comprehensive Verilog FIFO memory)

利用stm32F407实现的等精度测频，可以精确测量频率，误差很小(The equal precision frequency measurement realized by stm32F407 can accurately measure frequency with little error.)

说明：  数字钟通过verilog实现，并且支持Modelsim仿真，通过实验验证(The digital clock is implemented by Verilog and supports Modelsim simulation)

LED灯、跑马灯的显示源程序，包括对代码的说明(Display source code LED lights, marquees, including the code specification)

使用信号功率计算，检测信号是否到达。从而控制后续模块，以减小系统功耗。(Signal power calculation, the detection signal to reach. To control follow-up modules to reduce system power consumption.)

这是本人写的可显示128*64LCD全屏汉字的程序,直接下到片子里即可出现象(需自己定制ROM).想显示第二屏的话只需加一个状态即可.-I write this is the display of 128* Embedded full screen characters procedures, directly to the unit under the blankets will be out phenomenon (it-yourself customized ROM). to the second screen shows only the state can be a plus .