STM32F407 MODBUS通信源码

此代码与Rfid读卡器凭据提供程序有关。

本程序为3G模块详细应用代码，具体可参考3G模块资料

控制步进电机，扫描后进行数据处理，自动返回光强最大值点

电梯模拟系统基本实现了电梯的正常运行所需要的各种功能，例如启动、上、下以及楼层的选择和楼层的显示。在启动时，我们没有特别的设置一个启动按钮，因为第一层的“上”按钮就起到了此功能，再特别添加一个“启动”按钮就显得冗余，当启动是，显示楼层为 “floor 1”。同时电梯里面的各个楼层均可以响应了。-Simulation system for the basic realization of the lift elevator required for the normal operation of various functions, such as start, the upper and lower floors, as well as the selection and display floors. At boot time, we do not have to set up a special start button, because the first line of " on" button on the play of this function, and then add a special " start" button has become redundant, when the start is that the show floor for the " floor 1. " At the same time, the various floors inside the lift can be responded to.

用ＷＰＦ写一个简单的转盘

MFC 对话框如套接字程序服务端和客户端 测试正常 初学者参考学习优化，先执行服务端再执行客户端，就看到客户端发送一个hello在服务端接收到！可以参考学习使用,对初学者有一定的帮助。

学会使用调节控件编程-learning how to use the regulatory controls Programming

仿真程序：首先需要用一个随机发生器产生（0.1）内的均匀随机数，然后再将该序列映射到对应的幅度电平｛Am｝。然后将这个范围再分成4个相等的区间，这些子区间分别对应于4个信号比特的符号00，01，10，11。检测器观察到r=Am+n，并且计算r和4种可能传输的信号幅度之间的距离，它的输出Bm就是相应于最小距离的信号电平。Bm与真正的的传输信号幅度比较，差错计数器用来对检测器产生的差错计数。(Simulation program: first need to use a random generator (0.1) the uniform random number, then the sequence is mapped to the corresponding amplitude level {Am}. Then this range has been divided into four equal intervals, these sub-intervals corresponding to four signal bits of the symbol 00,01,10,11. Detector observed r = Am+ n, and calculate r and 4 possible transmission distance between the signal amplitude, its output corresponding to the minimum distance Bm is the signal level. Bm and the real rate of transmission of the signal comparison, error detection counter is used to generate the error count.)

说明：  函数式编程目前已跟OO一样，是一种重要的编程范式，可以在一些场合下更容易的解决相关问题。(Functional programming is now the same as OO. It is an important programming paradigm that can solve related problems more easily in some situations.)

将点云数据按照格网分割，筛选在每个格网中的点云数据，然后对这些数据进行曲面拟合，求得拟合的曲面，将数据带入拟合曲面，得到理论值，然后与对应的真实值求差，将超过一定阈值的点作为非地面点，满足阈值的点作为地面点