sleep-tinyos

安卓摇一摇案例，安卓传感器的学习模版，值得学习(Andrews shake case study template Andrews sensor, it is worth learning)

基于C语言的GSM模块sim808的51驱动程序(The 51 driver of the GSM module sim808)

Allows you to convert one unit of distance to another unit of distance in scientific format.

此程序是多传感器数据融合实例，非常好的例子，自己整理融合的(Multi sensor data fusion )

键盘的功能，有单独键盘和行列式键盘的程序，很实用，(Keyboard functions, the determinant has a separate keyboard and keyboard procedures, it is practical,)

利用28027对看门狗进行测试，学习这部分知识的好例程(To 28,027 pairs watchdog test, learning this part of the knowledge of good routine)

按键判断 进行行扫描m表示对应的行数 n表示对应的列数 对应数值亮(Judgment keystroke scan lines express the corresponding m number of rows n that corresponds to the number of rows corresponding numerical Liang)

最小系统调试 对输入输出口的控制 实现高低电平转换(test 51 zuixiaoxitong gongxiang xihuannaqu)

Demo Classic Diffie-Hellman

在传统反激变换器基础上，引入三电平技术，并针对传统反激三电平 DC-DC 变换器电源两端并联的分压电容不均 压的问题，提出了一种交错并联反激式三电平 DC-DC 变换器。该变换器具有电路拓扑简洁，输出只需电容滤波，减小输出滤波器， 提高了变换器功率密度等优点。深入分析了该变换器的工作原理及工作过程，推导了其输入输出关系，和传统的反激两电平变 换器相比，可以得出该并联交错三电平反激变换器能减小输出电容，降低功率开关管电压应力等结论。最后设计了闭环控制策略， 并基于 saber 对电路进行仿真，验证了该拓扑的正确性和输出电容小、功率开关管电压应力低等特点。(This paper, based on the traditional flyback converter, introduces three-level technology, and proposes a Interleaved flyback three-level DC-DC converter to solve the capacitor voltage divider uneven pressure problems of traditional three-level flyback DC-DC power converter. The converter has the advantages of simple topology, just capacitor filter output, reducing the output filter, improves the converter power density, etc. This paper deeply analyzes the working principle and the work process of the converter, derive the relationship between its input and output. Compared to the traditional two-level flyback converter, the Interleaved flyback three-level DCDC converter can reduce the output capacitance, reduce the power switch voltage stress. Finally design the closed-loop control strateg, and simulate circuit in saber. Verify the correctness of the topology and output capacitance, power switches and low voltage stress.)