stopwatch_if

99秒马表，在Proteus设计两个数码管动态显示及一个键盘SP。在ucos下结合keil完成开始时，显示“00”，第1次按下SP后就开始计时。 第2次按SP后，计时停止。第3次按SP后，计时归零。 (99 seconds stopwatch, two in the Proteus design dynamic digital tube display and a keyboard SP. Keil in combination ucos completed under the beginning of the show " 00" , 1st timer after pressing the SP. 2nd by SP, the time to stop. The 3rd by the SP, the time zero.)

数字温度计 DS18B20控制的数字温度计(Digital Thermometer DS18B20 digital thermometer control)

一个简单的U8数据转换为bit数据的程序，已经验证通过(A simple U8 data into bit data of the program, has been verified by)

说明：  使用了STM32f103采用采集正弦波 ，使用DMA进行传输，保证数据的实时性(STM32F103 is used to collect sine wave and DMA is used for transmission to ensure real-time data)

使用PIC16F877 picc编译环境做的红外遥控接收程序(Environment using the PIC16F877 picc compiler to do infrared remote control receiver)

j1939在康明斯电控发动机上的应用情况和基本概念(j1939 electronically controlled Cummins engine in the application and basic concepts)

说明：  I2C_SHT21 温湿度传感器测量 I2C 读取SHT21 温湿度传感器 SHT21驱动库有两种操作模式，适合不同操作 自动转换测量模式： 1：启动任意一个测量指令,例如测量温度执行 measureT(); 2：延时200ms 3：读取测量后的数值, autoMeasure(float * th); 该函数读取测量得出的数据，并根据数据的类型进行转化，再自动启动下一个类型的测量 指定转换测量模式： 1：先启动一次测量,例如测量温度执行 measureT(); 2：延时200ms 3：读取测量后的数值,例如读取温度执行readT();(2C_ SHT21 temperature and humidity sensor measurement I2C read SHT21 temperature and humidity sensor SHT21 driver library has two operation modes, which are suitable for different operations Automatic conversion of measurement mode: 1: Start any measurement command, for example, measure the temperature and execute measure(); 2: Delay 200ms 3: Read the measured value and Automeasure (float * th); This function reads the measured data, converts it according to the data type, and then automatically starts the next type of measurement Specify the conversion measurement mode: 1: Start a measurement first, for example, measure the temperature; 2: Delay 200ms 3: Read the measured value, for example, read the temperature and execute readt();)

Xilinx Spartan-3E Starter Kit Board User Guide(中文用户手册)(Xilinx Spartan-3E Starter Kit Board User Guide)

几种传统滤波方法如kuan、frost、SBF、srad代码以及比较代码(Several traditional filtering methods and code comparison code)

日本北斗公司开发的usb鼠标源程序单片机为HITACHI--H8S2215(developed by usb mouse source for Hitachi microcontroller-- H8S2215)