单片机基础c语言之条件编译

基于stm32f107vc的PWM 2路输出 控制电机 闭环调速 (Based stm32f107vc of PWM 2 output control loop speed control motor)

Intel196kc自动化保护用的测控主机板用源代码程序。包括初始化，运行，调试，通信，代用傅里叶技术计算等自动化技术。液晶链接部分(Intel196kc automation protection for the control host board using the source code program. Including initialization, operation, debugging, communication, and substitution of Fourier technology and other automation techniques)

51单片机dac0809驱动程序，包含整个单片机开发。(51 single dac0809 drivers)

这里给出一个用于测试7279芯片扫描与控制功能的简单例程。(Here is a test for the 7279 chip scanning and control functions simple routines.)

说明：  实现正常时钟功能，带时间日期，三组闹钟，键盘显示(流程图，配合程序使用)(Realize normal clock function, with time and date, three sets of alarm clocks, keyboard display)

c51的1601液晶源程序，可以供大家参考使用，提高效率。(decoder source of the 1601 LCD, for reference use, and improve efficiency.)

说明：  proteus仿真!适合C51单片机初学

数码相框（一个简单的数码相框程序，有I2S，LED,LCD，按键等等）(Digital Photo Frame)

一种基于AT89S52单片机的光电开关转速测量系统的设计。系统采用反射式光电开关产生与齿轮相对应的脉冲信号，使用AT89S52单片机采样脉冲信号并计算每分钟内脉冲信号的数目，即电机对应的转速值，最终系统通过数码管实时显示电机的转速值(A photoelectric switch based on AT89S52 Microcontroller speed measurement system design. The system uses a reflective photoelectric switch with the gear corresponding to the pulse signal, the microcontroller AT89S52 sampling pulse signal and calculate the number of pulse signals per minute, the motor speed value corresponding to the final system in real time by digital tube display the value of the motor speed)

说明：  根据stm32f103自带DA功能和DMA实现输出正弦波,可根据改变定时器周期改变正弦波频率。(According to the DA function and DMA of stm32f103, the output sinusoidal wave can be realized, and the frequency of sinusoidal wave can be changed according to the period of timer.)