dxp、keil垃圾清理

这是一本超声波2级考证的一本书，也是超声波专业学习者和研究者的基础书籍，很实用的。(This is a book about the ultrasonic level 2, and it is also the basis of learners of ultrasonic professional and researchers books, very practical.)

说明：  STM32F103 HAL库串口应用例程(STM32F103 HAL Library Serial Port Application Routine)

240128液晶驱动的测试程序，c语言编写(240,128 LCD driver testing procedures, c language)

Simple IEC61850 GOOSE Module

这是24L01开发头程序，希望对大家有帮阻(24L01 This is the first development process, we hope to help a resistance)

基于pic16F877A、DS1302、lcd1602的万年历(Based pic16F877A, DS1302, lcd1602 calendar)

使用stm32f103普通的引脚来模拟uart功能(Using STM32F103 ordinary pin to simulate UART function)

EMDA控制器可以在没有cpu的参与下完成映射存储空间的数据传输，这些数据的传输可以是片内外设，片内存储器之间。(EMDA controller can be done without the participation of CPU mapping storage space of data transmission, the data transmission can be set inside and outside, between internal storage.)

说明：  canopen 开源代码 CanFestival-3(canopen CanFestival-3)

使用AT89S52单片机核心芯片，通过c语言编程，使用delay函数控制led闪烁(Using AT89S52 microcontroller core chip, through the c programming language, using the delay function control led flashing)