AT89C52

同步串行数据发送电路SSDT的基本功能是将并行数据转换成串行数据并进行同步发送。系统写入和读出时序完全兼容Intel8086时序。 系统以同步信号开始连续发送四个字节，在发送中出现5个1时插入一个0，在四个数据发送结束而下一次同步没有开始之前，发送7FH，这时中间不需要插入零 (synchronous serial data transmission circuit SSDT the basic function is to convert parallel data into serial and the same this step. System write and read sequential fully compatible Intel8086 timing. Synchronized signal system to start sending four consecutive bytes, in this emerging 5 1:00 insert a 0, at the end of four data sent and the next synchronization not started before, sending seven FH, then the middle is not inserted)

单片机实验PC端控制步进电机转速中，上位机部分关于串口通信定义的代码 (PC controlling the stepper motor speed host computer software code)

说明：  STM32F103 RS485 DMA方式接收再发送不定长数据，起始和末尾不会有多余数据产生(STM32F103 RS485 DMA transfer and receive variable length data)

Abis接口IP化方案及应用 Abis接口IP化方案及应用(Abis interface to IP-based solutions and application of Abis interface to IP-based solutions and application of)

程序烧到片子，单片机完成对彩灯有规律的控制

电动车仪表盘设计源代码，基于st单片机，以用于产品，可供学习参考(Electric car dashboard design source code, based on the st microcontroller for use in products for learning reference)

在STM32上实现片内DAC模块的模数转换功能(Realization of analog-to-digital conversion)

使用单片机任意IO口用软件的方法模拟实现异步串行数据传输的方法，并采用多次采样软件方法来增加软件模拟串口通讯的可靠性，在以上基础上，进一步用具有中断功能的IO口来实现数据的接收，从而增加软件模拟方式的实用性和灵活性；(The use of single-chip arbitrary IO port with the method of software simulation method to realize asynchronous serial data transmission, and the reliability of software sampling method to increase the software simulation of serial communication, on the basis of the above, further with interrupt function of IO port to realize the data receiving, thereby increasing the practicability and flexibility of software simulation method;)

随机调制信号下的模拟ppm，基于SVPWM的三电平逆变的matlab仿真，在matlab R2009b调试通过。( Random ppm modulated analog signal under Based on SVPWM three-l)

说明：  注:protel电路图 1.INPUT12为高压气压和低压压传感器输入端. 2.OUTPUT为充气输出控制端. 3.当高低压有接地信号时,电机正转,气阀打开. 4.INPUT2低气压时有信号时,充气OUTPUT输出,充气电机转. 5.RS1与RS2是调节阀门距离用地 6.RS3是与气阀电机同步时,是气阀电机的转动圈数传感器. 7.RS4是调节延时时间用地(Note: protel circuit 1.INPUT12 and low-voltage high-pressure pneumatic pressure sensor input. 2.OUTPUT output control for the inflated side. 3. When the high and low pressure have a grounding signal when the motor is transferred, the valve opens. 4.INPUT2 low pressure when there is signal output OUTPUT inflatable, inflatable motor switch. 5.RS1 and RS2 is the regulator valve from the land 6.RS3 synchronous motor with the valve, the valve motor is rotating circle the number of sensors. 7.RS4 delay time to regulate land)