I2C

一个简易秒表程序，可以帮助学习单片机定时器功能的朋友理解定时器用法，有按键控制运行暂停等(A simple stopwatch program that can help you learn microcontroller timer function usage timer understanding friend , there are buttons to control operation pause)

电动消防车的设计。主要包括超声波测距，红外循迹，探测火源(The fire truck design)

说明：  PIC单片机红外线遥控接收解码实例 //芯片配置字，看门狗关，上电延时开，掉电检测关，低压编程关，加密，4M晶体HS振荡(PIC Microcontroller Infrared Remote Control Receiver Decoder instance of// chip configuration word, watchdog off, power-on delay to open, brown-out detection pass, low-voltage programming off, encryption, 4M crystal oscillator HS)

使用方法： 程序设置了ENC28J60的IP为192.168.0.15，模块通电后与电脑的网口用网线连接起来， 设置电脑的本地IP为192.168.0.**（**自定），网关为192.168.0.15,其他默认，配置 成功后便可以arp或ping模块。 打开浏览器，在地址里输入http://192.168.0.15/123456可打开开发板简单网页，页 面上通过按键来控制开发板LED的亮灭。(Use: setup the ENC28J60 of IP to 192.168.0.15, the module is powered on the computer' s Ethernet port using a cable connection up to set the computer' s local IP 192.168.0.** (** Custom), the gateway 192.168.0.15, default configuration is successful, it will make arp or ping module. Open the browser, enter the address http://192.168.0.15/123456 to open the development board simple web pages, and page keys to control the development board LED light off.)

说明：  ESP32驱动CS1238驱动程序，双通道； 带50K NTC电阻温度对照表，根据电压值计算出阻值，查表计算出对应温度值。(ESP32 driver CS1238 driver, dual channel; With 50K NTC resistance temperature comparison table, calculate the resistance value according to the voltage value, check the table to calculate the corresponding temperature value.)

使用STM32的RTC时钟做的一个石英时钟，能掉电保存，时间准确，界面美观(The use of STM32 RTC clock to do a quartz clock, can save power, accurate time, beautiful interface)

320240触摸绘图程序，查询方式和中断方式两种测试例程(320240 touch drawing program, query way and interrupt way two test routines)

analysis time series in R language. parameter estimation & forecast & scenario generation.

A basic string with different escapable characters for testing.

ARM部分实例包括ADS1.2工程和IAR4.40工程两部分(ARM Some examples include ADS1.2 works and works of two parts IAR4.40)