Gerber_bare pcb_20190710110627

说明：  PCA,红楼梦作者未解之谜，虚词，高频词(machine learning ,PCA,The author of the dream of the red chamber unsolved mystery)

说明：  MLX90614 description

说明：  平面光波从空气（折射率为1）入射到石英玻璃上（折射率为1.45），用MATLAB做出p、s分量的振幅反射率和振幅透射率以及他们的绝对值随入射角度的变化曲线。(Plane light waves are incident from air (refractive index is 1) to quartz glass (refractive index is 1.45). The amplitude reflectivity, amplitude transmissivity and their absolute values of P and s components are plotted with MATLAB.)

一个用LABVIEW构建的数据采集的例子，很好的，一起学习。-Used to build a LABVIEW data acquisition examples of very good to learn.

室内定位优秀资料代码共享，可以开学习了解(output quaternion describing the sensor relative to the Earth)

java实现正则表达式的代码，加上我自己写的测试的例子，是用jbuilder实现的-achieve expression of code, coupled with my own writing test example is the use of JBuilder realized

there is Design a butterworth low pass IIR filter. (a) Using butterworth to design an IIR low pass filter with Fs=8192hz and Fpass =1000 and Fstop =1200. You use the minimum order of filter. And match exactly at pass band. and other programs

说明：  三维空间矢量调制算法的仿真实例3D-SVPWM(A simulation example of three dimensional space vector modulation algorithm 3d-svpwm)

SH7619 support for the clock framework

大致思路说说，就是在外部SRAM里面做了一个大数组[320][240]做了一帧缓冲，所有屏幕相关操作都是在这一帧上面实现的，使用DMA直接丢数据到FSMC接口上，比I/O快多了，然后就是资源的去背问题，所有的图片都是我从手机版上面截图下来的，然后背景色都是0X4DF9，然后因为jpg转换软件的关系，蓝色的背景色会有偏差所以直接判断把0x4df9不显示不可行，后来想到可以用RGB颜色来入手，虽然不是0x4df9但是还是蓝色，所以蓝色分量肯定比红色多，所以做了一个阈值判断(Roughly speaking, a large array [320] [240] is made in the external SRAM to do a frame buffer. All screen-related operations are implemented on this frame. Using DMA to drop data directly to the FSMC interface is much faster than I/O. Then it is the problem of resource backtracking. All the pictures are taken from the top of the mobile version, and then the background color is 0X4DF9. Later, because of the relationship between JPG conversion software, the blue background color will be biased, so it is not feasible to directly judge that 0x4df9 is not displayed. Later, I thought that RGB color can be used to start with. Although it is not 0x4df9, it is still blue, so the blue component must be more than red, so I made a threshold judgment, and then it is the transition between scene and scene.)