数字密码锁

这是led流水灯的vhdl描述，很好的啊-led s hdl describe

实用的程序代码，希望对大家有用，已经调试通过-Practical program code, in the hope that useful to everybody, has debugging through

说明：  实现AXI,AXI-Lite乒乓地址的传输，AXI,AXI-Lite已经封装成内核，可直接修改后使用(Realize the transmission of table tennis address of Axi and Axi Lite. Axi and Axi Lite have been encapsulated into a kernel, which can be directly modified and used)

根据软件无线电的思想，提出了一种新颖的数字信号处理算法，对QPSK信号的相位进行数字化处理，从而实现对QPSK信号的解调.该算法允许收发两端载波存在频差，用数字锁相实现收发端载波的同步，在频偏较大的情况下，估算频偏的大小，自适应设置环路的带宽，实现较短的捕获时间和较好的信噪性能。整个设计基于XILINX公司的ISE开发平台，并用Virtex-II系列FPGA实现。用FPGA实现调制解调器具有体积小、功耗低、集成度高、可软件升级、扰干扰能力强的特点，符合未来通信技术发展的方向。(According to the idea of software radio, a novel digital signal processing algorithm, the phase of QPSK digital signal processing, enabling the demodulation of QPSK signals. This algorithm allows the sending and receiving ends of the carrier frequency difference exists, using digital phase-locked to achieve synchronization of sending and receiving end of the carrier, in the case of large frequency offset, frequency offset estimation of the size, adaptive set the loop bandwidth to achieve shorter acquisition time and better noise performance. The whole design is based on the company XILINX ISE development platform, and Virtex-II series with the FPGA. FPGA realization of a modem with a small size, low power consumption, high integration, software upgrades available, the characteristics of strong interference interference, in line with the future direction of ICT development.)

verilog编写的ds18b20温度传感器程序，可综合(ds18b20 program written in verilog)

TI公司的DAC5578驱动程序，经测试过的，CSDN资源分享(DAC5578 Driver of TI Company Tested and CSDN Resource Sharing)

详细的说明了FPGA设计的整个流程 FPGA设计全流程Modelsim>>Synplify.Pro>>ISE(Detailed description of the FPGA design flow of the entire FPGA design flow full Modelsim> > Synplify.Pro> > ISE)

DAC0832 接口电路程序.功能：产生频率为762.9Hz的锯齿波DAC0832VHDL程序与仿真(DAC0832 procedures interface circuit. Functions: generate the sawtooth frequency of 762.9Hz and simulation procedures DAC0832VHDL)

说明：  此程序用来实现图像的采集和帧数的计算功能。(Image acquisition and calculation of the number of frames.)

这是1C6开发板上元件的具体资料。此开发板有掉电不丢失程序的功能，就是靠着几个芯片(development board components specific information. This development board is not lost restart procedures, it was relying on a few chips)