1601-1

说明：  野火官方freertos内核实现与应用，书籍和配套代码(freertos The first part of the program does not rely on the development board, direct simulation can be run.)

FlexRay总线控制器MC9S12XF512软件开发参考手册(FlexRay Bus Controller MC9S12XF512 Software Development Reference Manual)

嵌入式I/O口实验程序，含有S3C2410的部分初始化，实现LED灯的暗和灭(Embedded I/O port the experimental procedure, which contains part of S3C2410 initialization, the realization of the dark and the LED lights out)

这个源码是利用STM32操作ATT7022E，并简单的读取各项基本参数的通讯例子。STM32使用R8T6，计量芯片是ATT7022E。例程中采用模拟SPI来对ATT7022E进行操作，里面的初始化、校表的寄存器操作均是根据ATT7022E的用户手册和应用笔记的最新寄存器操作进行。希望这个例子能对使用这款芯片做电力仪表的带来帮助。(This source is the use STM32 operating ATT7022E, and a simple example of the basic reading communication parameters. STM32 using R8T6, metering chip is ATT7022E. Analog SPI routines to manipulate ATT7022E, register operations inside the initialization, school tables are made in accordance ATT7022E user manuals and application notes for the latest register. I hope this example will bring help to use the chip to make electricity meters.)

说明：  定时器的使用，让你了解使用定时器所必须的几个步骤！从而能够使用(the use of timers let you know by the use of timers to be a few steps! In order to use)

51单片机的8155扩展的proteus仿真，完成数码管显示，LED灯控制，键盘控制等多种功能，仅供参考(51 MCU 8155 extended proteus simulation, the completion of digital tube display, LED light control, keyboard control and other functions, for reference purposes only)

西门子S7-200 Modbus通信（主站）(S7-200 Modbus master)

主要介绍串联稳压电源原理及主要的应用电路。(Introduces the principle and the main power supply series application circuit)

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();)

单片机键盘接口，可以用于单片机使用键盘,省去很多时间(PS/2 jian pan jie kou cheng xu )