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介绍AT24C512结构和基本原理基础上，按照PC机文件管理思想实现AT24C512文件系统，提高数据管理的效率(Introduction AT24C512 structure and basic principles based on the PC, file management in accordance with ideology AT24C512 file system, improve data management efficiency)

说明：  用C语言编写STM32嵌入式程序，设计一个万年历系统，并用HX1230屏显示相关的时间信息。 基本要求： 1.C语言程序要求是模块化设计。 2.该万年历要求能显示时间（时、分、秒）、年月日及闹钟定时时间（分、秒）。 3.该系统由2-3个按键可调整显示的时间、年月日及闹钟定时时间，具体各个按键功能及编程方式自定。 4.该闹钟可以定时时间到，LED将发出提示闪光，且持续30s。 5.HX1230屏能驱动显示。 6.定时时间可被打断，即打断后恢复时继续计时。 7.设置闹钟报警功能； 8.利用STM32自带的温度传感器功能，使系统能显示当前环境温度值。(STM32 embedded program is written in C language, a calendar system is designed, and relevant time information is displayed on HX1230 screen. Basic requirements: 1. The requirement of C language program is modular design. The calendar requires that time (hours, minutes, seconds), year, month, day and alarm clock timing time (minutes, seconds) be displayed. 3. The system can adjust the display time, year, month, day and alarm clock timing time by 2-3 keys, and the function and programming mode of each key are self-determined. 4. The alarm clock can be scheduled to arrive, and the LED will give a prompt to flash, and lasts for 30 seconds. 5. HX1230 screen can drive display. 6. Timing time can be interrupted, i.e. when the interruption is resumed, the timing will continue. 7. Setting alarm function of alarm clock; 8. Using the temperature sensor function of STM32, the system can display the current environmental temperature)

stm32控制ad7606实现模数转换 spi(stm32 control ad7606 analog-to-digital conversion spi)

松翰单片机编译工具。松翰单片机编译工具，里面有一些用法。可以仿真2711，2708，2501等。(Loose hands MCU compilation tools. Loose hands MCU compilation tool, there are some usage. Can the simulation, 2711270, 8250 1, etc)

用于STM8系列芯片的BQ24295芯片驱动代码，用于控制单节锂电池的充放电管理，使用了“STM8S_StdPeriph_Lib_V2.2.0”库函数用于IO配置，使用了虚拟I2C和虚拟SPI端口控制(code be used to drive bq24295 on stm8, can control one li-on battery charge and discharge, the code based on "STM8S_StdPeriph_Lib_V2.2.0" library(for config the IO), based on virtual spi and i2c.)

pca 用于定时器功能 pca可用于捕捉，定时，pwm输出等功能(pca pca can be used to capture, timing, pwm output for timer function)

基于STM32的电量计量芯片ATT7022E的程序，实现基本测量功能。未实现校准表功能(The program of STM32 based on ATT7022E, to realize the function of basic measurement. Self Calibration function is not implemented)

the function of the code is like a calculator.Basic calculator may be build by the code.

CPU正在执行一项任务A，然后突然停止任务A去执行任务B，执行完任务B再回来继续执行任务A的过程。(CPU is performing A task. A, then suddenly stop tasks to perform A task B, perform the task B come back again continue to perform the task A process.)

stm8通过读取内部ID信息，获取唯一的验证码，进行数据加密，防止外界破解！！！(stm8 by reading the the internal ID information, obtain a unique verification code, data encryption to prevent outside crack! ! !)