Stopwatch

说明：  单片机设计指纹密码锁，需要的可自行下载。(Single-chip design fingerprint lock, the need can be downloaded by yourself)

spi协议，分为几个文件块，以供调用，采用时钟芯片ds1302做例子，进行协议的实现，是c程序方面阅读。(spi agreement, the document is divided into several blocks, calling for the use ds1302 clock chip as an example, for the realization of the agreement is c procedures reading.)

一个简单的pid模型。运行后可以获得pid控制曲线。通过修改p/i/d的参数，观看控制曲线的变化。(A simple pid model running under matlab. It could simulate and output the PID curve with manual setting p/i/d values.)

中断 接收 单片机 c语言开发中断 (To interrupt reception microcontroller c language development)

输出12路死区互补同步中间对齐PWM的定时器配置(Timer Configuration of 12-way Complementary Dead Zone Synchronized Intermediate Alignment PWM)

基于MSP430G2553的频率计数计的程序编写，已经过测试，程序无误可以完整运行。(Based on the frequency count MSP430G2553 meter programming, has been tested, the program can complete run correctly.)

stm32f103读写AT24C256的C语言程序(stm32f103 read and write the AT24C256 C-language program)

附件为小日本的50KW逆变器的方案，太阳能控制架构图，希望对大家有用。附件为小日本的50KW逆变器的方案，太阳能控制架构图，希望对大家有用。(Attached is a small Japanese 50KW inverter solutions, solar control chart, we want to be useful. Attached is a small Japanese 50KW inverter solutions, solar control chart, we want to be useful.)

stm8s005K6的高质量delay函数，用汇编写的。(stm8s asm delay function)

针对stm32f103芯片的arm板上用于编码器转速和读取脉冲，另文件内附有硬件接线说明(The arm board of STM32F103 chip is used for encoder speed and reading pulse. Hardware wiring instructions are attached to the file.)