zutaishuixiang

基于ATMega64编写的BOOT升级程序，通过固定协议进行通讯，接收到的程序保存在外部Flash中，进行搬移(Based ATMega64 prepared BIOS upgrade program, through a fixed protocol for communication, received program stored in the external Flash, make the move)

可实现有源功率因数校正功能，可以保证交流输入电压电流同相位，采用的是boost主电路拓扑(Active Power Factor Correction )

sony投影机 RS232中控码，适用于所有索尼投影机，欢迎下载使用，谢谢大家

本例程基于STM32F103RC系列ARM单片机的外部按键测试程序(This routine is based on external key test program of STM32F103RC series ARM microcontroller)

采用ATMEGA48单片机，采用状态机实现按键的单击、双击、长按的按键功能(The ATMEGA48 microcontroller, using the state machine to implement the double click click button long press keys function )

MCP2515实现CAN232功能 2515初始化程序 CAN发送子程序,查询发送 CAN接收子程序，中断接收 硬件连接： AT89S51/52+MCP2515(MCP2515 features to achieve CAN232 2515 initialization procedure CAN send subroutine, send a query CAN receives subroutine, interrupt reception Hardware connection: AT89S51/52+ MCP2515)

红外+modbus从机 stm32f103控制格力空调 可以实现 空调开关 设置冷热模式和设定温度，另外加上DS18B20测温(红外+modbus从机 控制格力空调 可以实现 空调开关 设置冷热模式和设定温度，另外加上DS18B20测温)

单片机at89c52控制步进电机，愿跟大家一起分享(Microcontroller at89c52 control stepper motor, is willing to work with you to share with)

包含proteus仿真文件及c语言程序，在开发板上进行过运行。利用双色LED显示电路，和四位静态数码管显示电路模拟十字路口交通信号灯。4位LED数码管显示时间，双色LED灯显示红绿灯状态。熟悉交通信号灯控制逻辑。设计一个十字路口的交通灯控制电路，要求南北方向和东西方向两个交叉路口的车辆交替运行。每次绿灯变红灯时,要求黄灯先亮3S,才能变换运行车辆。东西方向、南北方向车道除了有红、黄、绿灯指示外，每一种灯亮的时间都用数码管显示器进行显示（采用倒计时的方法）。考虑到特殊车辆情况，设置紧急转换开头。(It contains proteus simulation file and C language program. It has been run on the development board. Two-color LED display circuit and four-bit static digital tube display circuit are used to simulate traffic lights at intersections. Four-bit LED digital tube display time, two-color LED lights show the status of traffic lights. Familiar with traffic signal control logic. Design a traffic light control circuit at the intersection, which requires the vehicles running alternately in the north-south direction and the East-West direction. Every time the green light turns red, the yellow light is required to turn on 3S before changing the running vehicle. In addition to the red, yellow and green lights in the east-west and North-South lanes, the time of each kind of light is displayed by digital tube display (countdown method). Considering the special vehicle situation, set up the emergency switch start.)

说明：  PWM输入+DMA，亲测可用，有需要的朋友可以自行下载。(PWM input + DMA, pro-test available.)