An-Introduction

波形发生器，无线接收，机械手，马达速度控制，计时器等例程，初学者的好帮手(Waveform generator, wireless receiver, robot, motor speed control, timer routines, good helper for beginners)

2014/3/12飞思卡尔光电组函数，线性ccd二值化成功，ccd控制舵机转角成功，直流电机成功，速度PID模块不成功，可以一战。(2014/3/12 Freescale photoelectric set of functions, linear ccd binary success, ccd control steering angle is successful, the success of the DC motor, the speed PID module fails, you can fight.)

基于星研集成环境的51单片机的电子钟设计与实现，源码是用汇编语言写的，有需要的可以下载参考下，谢谢(Design and implementation of electronic bell 51 single integrated environment based on satellite research, source code is written in assembly language, there is a need to download reference, thank you)

通用i2c通讯协议可直接应用在单片机开发中，移植性很好(General i2c communication protocol can be directly used in single-chip development, transplantation of a good)

本报告介绍了基于AT89S52单片机为核心的、以AD0809数模转换芯片采样、以1602液晶屏显示的具有电压测量功能的具有一定精度的数字电压表。在实现基础功能要求之上扩展了串口通讯、时钟功能、高压报警、短路测试、电阻测量、交流电压峰峰值和周期测试等功能，使系统达到了良好的设计效果和要求。( This report describes on AT89S52 microcontroller as the core, to AD0809 DAC chip sampling, digital voltmeter with a certain precision voltage measurement function has LCD display with 1602. On the basis of the functional requirements to achieve extended serial communication, clock function, high pressure alarm, short circuit testing, resistance measurement, AC voltage peak value and cycle testing and other functions, allowing the system to achieve a good performance and design requirements. )

基于51单片机，用DS12C887时钟芯片的电子钟，时间显示采用VFD荧光显示屏显示，效果很好(Based on 51 single-chip DS12C887 clock chip electronic clock, time display using VFD fluorescent display shows good effect)

增量式PID控制直流电机基于STM32的(PIDIncremental PID control DC motor based on STM32)

声表面波用于无损检测中，发射接收技术以及采用压电智能材料(saw,surface acoustic wave)

单片机控制的音乐播放器的proteus仿真以及源程序，导入单片机通过测试过能正常工作，希望对须要的人有所帮助。(Music player SCM proteus simulation and control of the source code, import the microcontroller through tested to work properly, we want to help people who need.)

该模块实现串口DMA发送中断接收，与系统或者外设通信，一发一答的方式，发送一帧数据，需等待对方应答，如果在规定时间内未等到ACK数据，发送端 会重发该数据，采用状态机制原理，对串口使用以及协议搭建很参考价值(The module DMA send serial interrupt receiving, and system or peripheral communication, one answer, send a frame of data, need to wait for the answer, if ACK did not wait until the data within the specified time, the sender will retransmit the data, using the state mechanism principle, build a reference value for the use of serial port and protocol)