步进电机

说明：  how to come ture a costas loop in FPGA with verilog,it is very useful on project

This a verilog file which is used as a decoder-This is a verilog file which is used as a decoder

一种压缩感知信号恢复算法，针对贪婪迭代类算法中的正交匹配追踪（OMP)算法的改进。OMP在每次迭代过程中选择出的原子并不是最优的，无法使本轮迭代中残差的减少最大化。本例程实现了改进的最优OMP算法，即Optimised_OMP，保证每次迭代选出的原子与已选出的原子序列所构成的平面正交，因而可以使残差下降的更快，从而加速算法收敛。(A compressed sensing signal recovery algorithms track (OMP) algorithm and orthogonal matching algorithm greedy iterative class. The OMP selected atoms in each iteration of the process is not optimal, not be able to maximize the reduction of the residual in the current round of iteration. The routines to achieve the optimal OMP algorithm improvements that Optimised_OMP, to ensure that each iteration selected atoms with atomic sequence elected a plane orthogonal, and thus can make the residuals have declined even faster, thus speeding up the algorithm convergence.)

八阶巴特沃兹iir数字滤波器，四个二阶节，verilog代码实现，多路分时复用(batterworth，iir，8order，four second order section)

SD卡读写源代码.用Verilog编写.很不错.值得借鉴.特别对SD卡开发的人员!(SD card reader-writer source code. Prepared to use Verilog. Is pretty good. Be used for reference. In particular, the development of personnel SD card!)

注意：是verilog语言写的 一bit的全加器，实现4位数的串行加法器，一个时钟能完成一次一bit的全加(Note: It is verilog language to write a bit full adder, to achieve four-digit serial adder, a clock can be completed once a bit full adder)

温度控制系统.运用ds18b20温度传感器将实时温度送入FPGA中，再将温度显示出来(Temperature control systems. Use ds18b20 temperature sensor into the FPGA in real-time temperature, then the temperature is displayed)

半带滤波器，用于sigma-delta DAC中的设计(Half-band filter for sigma-delta DAC design)

适用于满足I2C协议的flash读/写操作程序，只需要设置要读/写的字节数，就可以直接使用！-Applicable to meet the I2C protocol flash read/write operations, only need to set to read/write number of bytes can be used directly!

MIG IP控制DDR3读写测试，于MIG IP核用户接口时序较复杂，这里给出扩展接口模块用于进一步简化接口时序。(MIG IP controls DDR3 reading and writing tests, and the time sequence of MIG IP kernel user interface is more complex.)